Good taste or gut feeling? A new method in rats shows oro-sensory stimulation and gastric distention generate distinct and overlapping brain activation patterns
Roelofs, Theresia J.M. ; Luijendijk, Mieneke C.M. ; Toorn, Annette van der; Camps, Guido ; Smeets, Paul A.M. ; Dijkhuizen, Rick M. ; Adan, Roger A.H. - \ 2020
International Journal Eating Disorders (2020). - ISSN 0276-3478
functional magnetic resonance imaging - functional neuroimaging - rats - satiation - stomach - taste
Satiation is influenced by a variety of signals including gastric distention and oro-sensory stimulation. Here we developed a high-field (9.4 T) functional magnetic resonance imaging (fMRI) protocol to test how oro-sensory stimulation and gastric distention, as induced with a block-design paradigm, affect brain activation under different states of energy balance in rats. Repeated tasting of sucrose induced positive and negative fMRI responses in the ventral tegmental area and septum, respectively, and gradual neural activation in the anterior insula and the brain stem nucleus of the solitary tract (NTS), as revealed using a two-level generalized linear model-based analysis. These unique findings align with comparable human experiments, and are now for the first time identified in rats, thereby allowing for comparison between species. Gastric distention induced more extensive brain activation, involving the insular cortex and NTS. Our findings are largely in line with human studies that have shown that the NTS is involved in processing both visceral information and taste, and anterior insula in processing sweet taste oro-sensory signals. Gastric distention and sucrose tasting induced responses in mesolimbic areas, to our knowledge not previously detected in humans, which may reflect the rewarding effects of a full stomach and sweet taste, thereby giving more insight into the processing of sensory signals leading to satiation. The similarities of these data to human neuroimaging data demonstrate the translational value of the approach and offer a new avenue to deepen our understanding of the process of satiation in healthy people and those with eating disorders.
Effects of distraction on taste-related neural processing : a cross-sectional fMRI study
Duif, Iris ; Wegman, Joost ; Mars, Monica M. ; Graaf, Cees De; Smeets, Paul A.M. ; Aarts, Esther - \ 2020
American Journal of Clinical Nutrition 111 (2020)5. - ISSN 0002-9165 - p. 950 - 961.
attention - consumption - distraction - fMRI - insula - orbitofrontal cortex - taste
Background: In the current obesogenic environment we often eat while electronic devices, such as smart phones, computers, or the television, distract us. Such "distracted eating"is associated with increased food intake and overweight. However, the underlying neurocognitive mechanisms of this phenomenon are unknown. Objective: Our aim was to elucidate these mechanisms by investigating whether distraction attenuates processing in the primary and secondary taste cortices, located in the insula and orbitofrontal cortex (OFC), respectively. Methods: Forty-one healthy, normal-weight participants received fixed amounts of higher-And lower-sweetness isocaloric chocolate milk while performing a high-or low-distracting detection task during fMRI in 2 test sessions. Subsequently, we measured ad libitum food intake. Results: As expected, a primary taste cortex region in the right insula responded more to the sweeter drink (P < 0.001, uncorrected). Distraction did not affect this insular sweetness response across the group, but did weaken sweetness-related connectivity of this region to a secondary taste region in the right OFC (P-family-wise error, cluster, small-volume corrected = 0.020). Moreover, individual differences in distraction-related attenuation of taste activation in the insula predicted increased subsequent ad libitum food intake after distraction (r = 0.36). Conclusions: These results reveal a mechanism explaining how distraction during consumption attenuates neural taste processing. Moreover, our study shows that such distraction-induced decreases in neural taste processing contribute to individual differences in the susceptibility for overeating. Thus, being mindful about the taste of food during consumption could perhaps be part of successful prevention and treatment of overweight and obesity, which should be further tested in these target groups. This study was preregistered at the Open Science Framework as https://bit.ly/31RtDHZ.
Good practice in food-related neuroimaging
Smeets, Paul A.M. ; Dagher, Alain ; Hare, Todd A. ; Kullmann, Stephanie ; Laan, Laura N. van der; Poldrack, Russell A. ; Preissl, Hubert ; Small, Dana ; Stice, Eric ; Veldhuizen, Maria G. - \ 2019
American Journal of Clinical Nutrition 109 (2019)3. - ISSN 0002-9165 - p. 491 - 503.
aroma - data sharing - food choice - food viewing - functional magnetic resonance imaging - good practice - neuroimaging - satiation - taste
The use of neuroimaging tools, especially functional magnetic resonance imaging, in nutritional research has increased substantially over the past 2 decades. Neuroimaging is a research tool with great potential impact on the field of nutrition, but to achieve that potential, appropriate use of techniques and interpretation of neuroimaging results is necessary. In this article, we present guidelines for good methodological practice in functional magnetic resonance imaging studies and flag specific limitations in the hope of helping researchers to make the most of neuroimaging tools and avoid potential pitfalls. We highlight specific considerations for food-related studies, such as how to adjust statistically for common confounders, like, for example, hunger state, menstrual phase, and BMI, as well as how to optimally match different types of food stimuli. Finally, we summarize current research needs and future directions, such as the use of prospective designs and more realistic paradigms for studying eating behavior.
Effect of Taste Enhancement on Consumer Acceptance of Pureed Cucumber and Green Capsicum
Stokkom, Vera L. van; Graaf, Cees de; Kooten, Olaf van; Stieger, Markus - \ 2018
Journal of Food Science 83 (2018)10. - ISSN 0022-1147 - p. 2578 - 2585.
acceptance - capsicum - cucumber - taste - vegetable
Abstract: Vegetables have low taste intensities, which might contribute to low acceptance. The aim of this study was to investigate the effect of taste (sweetness, sourness, bitterness, umami, and saltiness) and fattiness enhancement on consumer acceptance of cucumber and green capsicum purees. Three concentrations of sugar, citric acid, caffeine, mono-sodium glutamate, NaCl, and sunflower oil were added to pureed cucumber and green capsicum. Subjects (n = 66, 35.6 ± 17.7 y) rated taste and fattiness intensity. Different subjects (n = 100, 33.2 ± 16.5 years) evaluated acceptance of all pureed vegetables. Taste intensities of vegetable purees were significantly different (P < 0.05) between the three tastant concentrations except for umami in both vegetable purees, sourness in green capsicum puree, and fattiness in cucumber puree. Only enhancement of sweetness significantly (P < 0.05) increased acceptance of both vegetable purees compared to unmodified purees. In cucumber purees, relatively small amounts of added sucrose (2%) increased acceptance already significantly, whereas in green capsicum acceptance increased significantly only with addition of 5% sucrose. Enhancement of other taste modalities did not significantly increase acceptance of both vegetable purees. Enhancing saltiness and bitterness significantly decreased acceptance of both vegetable purees. We conclude that the effect of taste enhancement on acceptance of vegetable purees differs between tastants and depends on tastant concentration and vegetable type. With the exception of sweetness, taste enhancement of taste modalities such as sourness, bitterness, umami, and saltiness was insufficient to increase acceptance of vegetable purees. We suggest that more complex taste, flavor, or texture modifications are required to enhance acceptance of vegetables. Practical Application: Results can be used by cultivators to select and grow vegetable varieties with enhanced taste and flavor. Especially for cucumber, relatively small sweetness enhancement is sufficient to increase acceptance.
|Postharvest Technology in Tomatoes
Westra, Eelke - \ 2018
postharvest - tomatoes - quality - colour - taste - prediction - vegetables - transport - logistics - postharvest - tomatoes - quality - taste - colour - prediction - vegetables - transport - logistics
“Everything tastes different” : The impact of changes in chemosensory perception on food preferences, food intake and quality of life during chemotherapy in cancer patients
Vries, Yfke Carlijn de - \ 2017
Wageningen University. Promotor(en): Kees de Graaf; H.W.M. van Laarhoven, co-promotor(en): R.M. Winkels; Sanne Boesveldt. - Wageningen : Wageningen University - ISBN 9789463436090 - 169
perception - sensory evaluation - food intake - quality of life - food preferences - neoplasms - taste - macronutrients - drug therapy - breast cancer - perceptie - sensorische evaluatie - voedselopname - kwaliteit van het leven - voedselvoorkeuren - neoplasma - smaak - macronutriënten - geneesmiddelenbehandeling - borstkanker
Taste and smell changes are common side effects during chemotherapy in cancer patient and may have an impact on food preferences, food intake and quality of life. However, these relations have hardly been studied systematically in specific cancer populations. The overall aim of this thesis was to assess how the sense of taste and smell change upon treatment with chemotherapy in breast cancer and oesophagogastric cancer patients, and to investigate their consequences in terms of food preferences, food intake and quality of life.
To measure food preferences for both macronutrients and tastes, the Macronutrient and Taste Preference Ranking Task (MTPRT) was developed. in chapter 2, it was shown that by inducing sensory specific satiety for a standardized sweet and savoury meal, it is possible to detect shifts in preferences for both tastes and macronutrients with the MTPRT, and that these results are reproducible.
In Chapter 3 we studied objective and subjective taste and smell perception and food preferences in advanced oesophagogastric cancer patients undergoing palliative chemotherapy. The result showed that only objective taste function decreases during chemotherapy, but other chemosensory measures were unchanged. A lower subjective taste perception was related to a lower preference for high-protein products. Therefore it is important to consider patients’ taste perception, when providing dietary advice to OGC patients
Chapter 4 describes a study with similar outcome measures as chapter 3, but in breast cancer patients at several time points during and after chemotherapy, and compared to a healthy control group. The study showed that breast cancer patients like high-protein, high-fat, sweet and savoury products less during chemotherapy, thus showing altered preferences for macronutrients, but not for tastes. Furthermore, results showed a temporary decrease in taste and smell perception during chemotherapy. These findings show that patients should be informed prior to treatment on chemosensory changes, and that these changes should be monitored during treatment due to the consequences for nutritional intake and quality of life
In chapter 5 we assessed the dietary intake of breast cancer patients before and during chemotherapy compared to a healthy control group, and associations with experienced symptoms during chemotherapy. It was shown that symptoms induced by chemotherapy were associated with lower total energy, protein and fat intake, which was manifested by a lower intake of specific food groups. Therefore, to ensure an optimal dietary intake during chemotherapy, it is important to monitor nutritional status and symptom burden during chemotherapy in breast cancer patients.
To better understand the impact of chemosensory changes during chemotherapy on daily life, 13 advanced oesophagogastric cancer patients were interviewed (see chapter 6). Patients described a substantial impact of chemosensory and food-related changes on daily life (by changing daily routines), social life (eating being less sociable) and roles in the household (changing roles in cooking and grocery shopping).
Finally, in chapter 7, we assessed the association between self-reported taste and smell perception and quality of life in breast cancer patients. A worse taste and smell perception was associated with a worse global quality of life, role, social and emotional functioning shortly after chemotherapy. In patients treated with trastuzumab, a worse taste and smell perception was still associated with quality of life, social and role functioning half a year after chemotherapy had ended.
From the studies in this thesis we can conclude that chemotherapy mainly affects the sense of taste. The subjective perception of taste was associated with a lower preference for food products and lower energy intake. This indicates that it is not necessarily an actual change in the sense of taste or smell that has an impact on patients, but flavour perception as a whole and potentially a lower enjoyment of food. Moreover, these perceived changes in taste and smell can have a substantial impact on cancer patients’ lives, in a practical way by changing daily patterns of eating, but also socially and in roles in the household. A changed chemosensory perception during chemotherapy may lead to a worsened nutritional status, and could thereby negatively impact the response to chemotherapy. Therefore chemosensory perception should be monitored during chemotherapy. Future studies should further investigate the mechanisms behind chemosensory changes, factors that contribute to subjective taste perception and possible interventions to alleviate chemosensory changes during chemotherapy.
Effects of free-range access on production parameters and meat quality, composition and taste in slow-growing broiler chickens
Stadig, Lisanne M. ; Rodenburg, Bas ; Reubens, Bert ; Aerts, Johan ; Duquenne, Barbara ; Tuyttens, Frank A.M. - \ 2016
Poultry Science 95 (2016)12. - ISSN 0032-5791 - p. 2971 - 2978.
Body weight - fatty acid profile - meat color - short rotation coppice - taste
Demand for meat from free-range broiler chickens is increasing in several countries. Consumers are motivated by better animal welfare and other product attributes such as quality and taste. However, scientific literature is not unanimous about whether free-range access influences quality, composition, and taste of the meat. Because chickens normally do not use free-range areas optimally, it is possible that provision of more suitable shelter will lead to more pronounced differences between chickens raised indoors and outdoors. In this study, an experiment with 2 production rounds of 600 slow-growing broilers each was performed. In each round, 200 chickens were raised indoors (IN), 200 had free-range access to grassland with artificial shelter (AS), and 200 had free-range access to short-rotation coppice with willow (SRC). Free-range use, feed intake, and growth were monitored, and after slaughter (d72) meat quality, composition, and taste were assessed. Free-range use was higher in SRC than in AS chickens (42.8 vs. 35.1%, P < 0.001). IN chickens were heavier at d70 than AS and SRC chickens (2.79 vs. 2.66 and 2.68 kg, P = 0.005). However, feed intake and conversion did not differ. Breast meat of chickens with free-range access was darker (P = 0.021) and yellower (P = 0.001) than that of IN chickens. Ultimate pH was lower (5.73 vs. 5.79; P = 0.006) and drip loss higher (1.29 vs. 1.09%; P = 0.05) in IN versus AS chickens. The percentage of polyunsaturated fatty acids was higher in AS than in IN meat (35.84 vs. 34.59%; P = 0.021). The taste panel judged breast meat of SRC chickens to be more tender (P = 0.003) and less fibrous (P = 0.013) compared to that of AS and IN chickens, and juicier compared to the IN chickens (P = 0.017). Overall, free-range access negatively affected slaughter weight, but positively affected meat quality, taste, and composition. Only a few differences between AS and SRC were found, possibly due to limited differences in free-range use.
Reflectance of botanical, production and geographical origin on the unique compositional traits of purple grape juices
Granato, Daniel - \ 2016
Wageningen University. Promotor(en): Saskia van Ruth; Vincenzo Fogliano. - Wageningen : Wageningen University - ISBN 9789462579071 - 151
grape juice - fruit juices - phenolic compounds - antioxidant properties - taste - provenance - chemometrics - mass spectrometry - druivensap - vruchtensappen - fenolverbindingen - antioxidatieve eigenschappen - smaak - herkomst - chemometrie - massaspectrometrie
Grape juices represent one of the most consumed fruit juices because of its sensory properties, availability, reasonable price, and more recently because of their functional properties demonstrated by a vast number of in vitro, in vivo, clinical, and epidemiological studies. Although grape juices have been the target of a high number of studies, it is still not fully known how geographical origin and production management system, affect the chemical profile, quality traits related to flavor, and in vitro antioxidant of grape juices. Therefore, the main objective of this study is to elucidate the reflectance of origin (botanical, geographical, production system) in the unique compositional traits of juices from different botanical origins, with emphasis on purple grape juices. Subsequently, chemometric methods were used to try to authenticate the origin of grape juice based on the grape juice’s quality traits. Results showed that it was possible to note that the instrumental taste profile, chemical composition related to phenolic compounds, and antioxidant activity of juices from distinct botanical origins differ considerably. More specifically, pomegranate and elderberry juices presented the highest phenolic content and antioxidant activity, implying that the botanical origin of juices affected remarkably their unique instrumental taste profile and physicochemical parameters, phenolic composition, and in vitro antioxidant activity. The production managements systems, (organic/biodynamic, ORG/BIO, versus conventional, CONV) is influencing the volatile organic composition (VOC) profiles, some phenolic compounds and copper chelating activity. It is not affecting the instrumental taste profile nor the in vitro antioxidant activity results. ORG and BIO purple grape juices can be differentiated by their VOC profiles but not by the other characteristics studied. More specifically, CONV juices had higher mean levels for all ions compared to ORG and BIO juices. More specifically, in fact, BIO juices presented the lowest mean values for almost all ions measured. When European grape juices were studied, no significant difference (p>0.05) between ORG, BIO, and CONV juices was observed for instrumental richness, umami, saltiness, sourness, astringency, bitterness, total phenolic content, total soluble solids, pH, ortho-diphenols, copper chelating activity, and ferric reducing antioxidant activity. For the Brazilian samples, the contents of chlorogenic acid and myricetin were statistically higher in ORG juices, while the in vitro antioxidant activity measured by three assays (DPPH, CUPRAC, and iron chelating ability) were not different between production management systems. For the European juices, some differences were observed: BIO and ORG juices presented higher contents of (-)-epicatechin, quercetin, (+)-catechin, and myricetin compared to the CONV juices. The VOC profile, instrumental taste parameters, phenolic composition, and in vitro antioxidant activity is highly affected between regions, in which Brazilian juices presented higher ion intensities as compared to the European juices. Brazilian juices, regardless of the production management system adopted, presented higher total phenolic content and flavonoids, total anthocyanins, proanthocyanidins, flavonols, and flavanols, except for trans-resveratrol, malvidin-3-glucoside and pelargonidin-3-glucoside. From this work, we can conclude that the geographical and botanical origins affect significantly the VOC profiles, instrumental taste profile, the phenolic composition, and antioxidant activity of grape juices.
Beyond liking : emotional and physiological responses to food stimuli
He, W. - \ 2016
Wageningen University. Promotor(en): Kees de Graaf, co-promotor(en): Sanne Boesveldt; Rene de Wijk. - Wageningen : Wageningen University - ISBN 9789462576506 - 149
stimuli - food - emotions - autonomic nervous system - odours - taste - beverages - physiological functions - man - human behaviour - expressivity - prikkels - voedsel - emoties - autonome zenuwstelsel - geurstoffen - smaak - dranken - fysiologische functies - mens - menselijk gedrag - expressiviteit
Background and aim
Traditional liking ratings are typically seen as an important determinant in eating behavior. However, in order to better understand eating behavior, we need to first better understand (the dynamic and implicit features underlying) liking appraisal. The aim of this thesis was to investigate the effects of food stimuli varying in sensory modality (smell and taste), pleasantness and intensity, on emotional and physiological responses leading up to liking appraisal.
Four studies, using healthy participants, were conducted as part of this thesis. In the first study, responses to pleasant versus unpleasant food odors varying in intensity were measured discretely using pleasantness ratings, intensity ratings and non-verbally reported emotions (PrEmo), as well as continuously using facial expressions and autonomic nervous system (ANS) responses. To further explore how explicit and implicit factors contribute to pleasantness appraisal, the same measures were assessed in response to food odors with a wider range of valence. Next, we focused on facial expressions and ANS responses elicited by single sips of breakfast drinks that were equally liked. In the last study, we investigated changes in pleasantness after consuming semi-liquid meals to (sensory-specific) satiety, combined with measures of facial expressions and ANS responses.
Both non-verbal reported emotions and emotional facial expressions were demonstrated to be able to discriminate between food odors differing in pleasantness and between food odors differing in intensity. In addition to discrete emotional responses, odor valence associated best with facial expressions after 1 second of odor exposure. Furthermore, facial expressions and ANS responses measured continuously were found odor-specific in different rates over time. Results of food odors with a wider range of valence showed that non-verbally reported emotions, facial expressions and ANS responses correlated with each other best in different time windows after odor presentation: facial expressions and ANS responses correlated best with the explicit emotions of the arousal dimension in the 2nd second of odor presentation, whereas later ANS responses correlated best with the explicit emotions of the valence dimension in the 4th second. For food stimuli varying in flavor (breakfast drinks), facial expressions and ANS responses showed strongest associations with liking after 1 second of tasting, as well as with intensity after 2 seconds of tasting. Lastly, we were able to demonstrate that ANS responses, as well as facial expressions of anger and disgust were associated with satiety. Further effects of sensory-specific satiety were also reflected by skin conductance, skin temperature, as well as facial expressions of sadness and anger.
Both non-verbal reported emotions and emotional facial expressions were demonstrated to be able to discriminate between food odors differing in pleasantness and/or intensity. Explicit and implicit emotional responses, as well as physiological patterns are related to liking appraisals involved in smelling foods. Implicit measures such as facial expressions and ANS responses can provide more multidimensional information for both food odors and tastes than explicit measures and prove to be highly dynamic over time with specific time courses. Early implicit facial and ANS responses primarily reflect emotion arousal, whereas later ANS responses reflect emotion valence, suggesting dynamic unfolding of different appraisals of food stimuli. Furthermore, ANS responses and facial expressions can reflect pleasantness, satiety, and a combination of both: sensory-specific satiety. This suggests that implicit processes play an important role in dynamic liking appraisals with respect to eating behavior.
Metabolites contributing to taste in Agaricus bisporus
Baars, J.J.P. ; Sonnenberg, A.S.M. ; Mumm, R. ; Stijger, I. ; Wehrens, H.R.M.J. - \ 2016
Plant Research International (PPO/PRI-report 2016-1) - 19
mushrooms - edible fungi - metabolites - taste - agaricus bisporus - taste panels - postharvest quality - paddestoelen - eetbare paddestoelen - metabolieten - smaak - agaricus bisporus - smaakpanels - kwaliteit na de oogst
During the last 35 years, hardly any breeding has been done in the button mushrooms (Agaricus bisporus). The fact that no new varieties are generated directed to trends in the food market has caused a slowly decrease in mushroom consumption in the Netherlands and in Europe. The hurdles for generating new varieties are difficulties in breeding and protection of new varieties. These hurdles are now nearly tackled and it is time to generate new varieties. One issue that has never been addressed is taste. The collection of Plant Breeding Wageningen UR contains a large number of strains of the button mushroom with a large genetic variation. In previous research this collection has been genotyped and a small selection of genetically different strains has been made. In 2014 these strains were cultivated along two different methods that were likely to cause differences in taste. Atempts were made to link the results from the taste panel to the metabolite concentrations. Even though it is a relatively small dataset, some correlations can be found for the taste attributes Firmness, Gummi and Boiled Egg and for the metabolites Alanine, Arginine and Proline.
Effectiveness of nutrition education in Dutch primary schools
Fries, M.C.E. - \ 2016
Wageningen University. Promotor(en): Pieter van 't Veer; Kees de Graaf, co-promotor(en): Annemien Haveman-Nies. - Wageningen : Wageningen University - ISBN 9789462576537 - 169
schools - elementary schools - primary education - dietetic education - taste - education - vegetables - psychosocial aspects - food consumption - scholen - basisscholen - primair onderwijs - voedingsonderwijs - smaak - onderwijs - groenten - psychosociale aspecten - voedselconsumptie
“Nutrition education in Dutch primary schools”
School-based nutrition education programmes have increasingly been used to teach children about nutrition and to provide them with the skills to make healthy food choices. As these programmes differ in content and delivery, it is hard to identify what intervention components and implementation conditions are most effective. Furthermore, as nutrition education is not mandatory in the Netherlands, it is not clear what effects can be achieved with nutrition education in Dutch primary schools. In this thesis therefore two versions of Taste Lessons were evaluated. Taste Lessons is a practice-driven school-based nutrition education programme on taste development, healthy nutrition, and food quality. The programme was evaluated on its aims to increase children’s interest in food, and their knowledge and skills regarding healthy and conscious eating behaviour. Furthermore, the influence of adding experiential learning activities and implementation factors on effectiveness are addressed.
The first evaluation showed that partial implementation of the 10-12 lessons of Taste Lessons (first version) by the teachers during one school year resulted in small increases in psychosocial determinants of healthy eating behaviour. The highest increase was observed in children’s knowledge, which still persisted six months after the programme.
A second evaluation was conducted with the aim to compare effectiveness of the revised and shorter version of Taste Lessons with and without additional experiential learning activities on change in (psychosocial determinants of) vegetable consumption and willingness to taste unfamiliar vegetables. Results from this second study showed that, with almost complete implementation of the five lessons of Taste Lessons by the teachers during a couple of weeks, similar results as the first effect evaluation. Again with knowledge as the strongest intervention effect. Additional experiential learning activities, such as an extended cooking lesson with a dietician and the parents, an excursion to a grower and a supermarket assignment with the parents, showed more and stronger increases in several psychosocial determinants of vegetable consumption than Taste Lessons without these additional activities. No significant intervention effects were found on children’s willingness to taste unfamiliar vegetables during a taste test, and also not on their daily vegetable consumption and food neophobia.
Analyses on process indicators in both studies revealed that teachers and children highly liked Taste Lessons and that children most liked the experiential learning activities. Furthermore, children’s programme appreciation and interpersonal communication about the programme activities after the lessons were found to be positively associated with their change in psychosocial determinants.
In conclusion, evaluation of Taste Lessons showed an increase in children’s knowledge and several other psychosocial determinants of eating behaviour. Implementation of (additional) experiential learning methods in school-based nutrition education is likely to enhance the intervention’s effectiveness, as children mostly liked these activities and children’s enthusiasm was the strongest predictor of effectiveness. No effects were found on children’s vegetable consumption. To achieve behavioural change, school-based nutrition education should be complemented with a consistent set of changes in children’s environment.
De consument wil smaak...maar welke smaak?
Verkerke, W. ; Labrie, C.W. - \ 2016
Kas Magazine / TuinbouwCommunicatie 2016 (2016)01. - ISSN 1878-8408 - p. 20 - 22.
tuinbouw - tomaten - paprika's - meloenen - aardbeien - smaak - consumentenpanels - smaakonderzoek - marketing - modellen - horticulture - tomatoes - sweet peppers - melons - strawberries - taste - consumer panels - taste research - marketing - models
Marktgericht produceren begint bij de smaak. Maar van welke smaak houdt de consument? Wageningen UR Glastuinbouw ontwikkelde een meetmodel voor de smaak van tomaten, paprika's en meloenen en werkt nu aan de aardbei. Bovendien brengt het de smaak van consumententypen in kaart. "Als je de smaakvoorkeur van consumenten kent, dan kun je pas écht produceren voor de markt."
Lekkere en gezondere aardbeien met extra blad- of vruchtbelichting : 12% meerproductie in het najaar
Janse, Jan ; Hanenberg, Maike - \ 2015
horticulture - greenhouse horticulture - cultural methods - agricultural research - illumination - led lamps - crop production - strawberries - all-year-round production - vitamins - varieties - taste - keeping quality
Bij Wageningen UR Glastuinbouw in Bleiswijk kijken onderzoekers in het Informatie Demonstratie Centrum (IDC) Smaak hoe ze met blad- en vruchtbelichting jaarrond kasaardbeien lekkerder en gezonder kunnen maken in combinatie met een goede houdbaarheid en hogere productie.
Alleen sterkere smaak verhoogt eetlust niet
Doets, E.L. ; Kremer, S. - \ 2015
Resource: weekblad voor Wageningen UR 10 (2015)6. - ISSN 1874-3625 - p. 8 - 8.
ondervoeding - eiwitdepletie - ouderen - voedselvoorkeuren - voedselkwaliteit - productontwikkeling - smaak - voedselverpakking - voeding - voedingsonderzoek - ouderenvoeding - undernutrition - protein depletion - elderly - food preferences - food quality - product development - taste - food packaging - nutrition - nutrition research - elderly nutrition
Vijf tot tien procent zelfstandige ouderen is ondervoed. Ouderen waarderen voeding waarschijnlijk beter als verschillende aspecten zoals textuur, smaak en uiterlijk tegelijkertijd worden verbeterd. Dit schrijven Esmée Doets en Stefanie Kramer, onderzoekers bij Food & Biobased Research, in een overzichtsstudie in het tijdschrift Food Quality and Preference.
Microben maken mede de wijn : regionale verschillen in gistpopulaties beïnvloeden het aromaprofiel van wijn
Maanen, G. van; Vermeulen, T. - \ 2015
Bionieuws 2015 (2015)15. - ISSN 0924-7734 - p. 1 - 1.
wijnen - smaak - gisten - microbiologie - fermentatie - wijnbouw - wijngaarden - wines - taste - yeasts - microbiology - fermentation - viticulture - vineyards
Wijn dankt zijn karakter niet alleen aan lokale omstandigheden in klimaat, bodem en teelt, maar ook aan aanwezige gisten, claimen Nieuw-Zeelandse microbiologen.
What reported food-evoked emotions may add: A model to predict consumer food choice
Gutjar, S. ; Dalenberg, J.R. ; Graaf, C. de; Wijk, R.A. de; Palascha, A. ; Renken, Remco J. ; Jager, G. - \ 2015
Food Quality and Preference 45 (2015). - ISSN 0950-3293 - p. 140 - 148.
consumption experience - responses - satisfaction - liking - taste - package - questionnaires - behavior - design - impact
Food-evoked emotions provide information that goes beyond the information from traditional hedonic ratings. The objectives of our study were: (i) to investigate how intrinsic (sensory) and extrinsic (packaging) cues affect consumers’ emotional responses to foods, and (ii) to explore whether emotional responses to these cues combined with liking, predict actual food choice. Participants (n = 103) rated emotional responses to seven products under a blind taste, a package and a package and taste condition using the EsSense Profile™. During the blind taste condition participants also scored liking of the products. Test products were breakfast drinks and desserts. Food choice was measured in two different breakfast sessions reflecting a different choice context. In one choice context, products were presented blind to taste, after which participants chose one out of the seven foods to consume for breakfast. In the other choice context, participants based their choice on the package of the seven foods without tasting them. Results showed that emotions evoked by food products could be organised in a two-dimensional space, representing a valence (pleasantness) and an activation/arousal dimension. Specific emotional profiles generated for products differed across the blind taste, package and the package and taste condition, meaning that intrinsic and extrinsic product properties elicit in part different emotions. Liking and valence together had the strongest predictive value for product choice based on the product’s taste. The combination of liking, valence and arousal had the strongest predictive value for package-based choice. In conclusion, food-evoked emotions add predictive value to solely liking ratings, and may guide consumers’ product choice behaviour.
Zoektocht naar fermentatieprocessen voor producten met minder zout
Smid, E.J. - \ 2015
voedselmicrobiologie - fermentatie - houdbaarheid (kwaliteit) - voedseltechnologie - zout - smaak - voeding en gezondheid - food microbiology - fermentation - keeping quality - food technology - salt - taste - nutrition and health
De fermentatie van verse plantaardige of dierlijke producten geeft extra smaak aan voedsel en verlengt de houdbaarheid. Het proces vergt echter vaak veel zout en daarvan krijgt de westerling al veel te veel binnen. In zijn inaugurele rede bij de aanvaarding van het persoonlijk hoogleraarschap Levensmiddelenmicrobiologie aan Wageningen University gaat prof. Eddy Smid op zoek naar alternatieve, ‘natriumarme’ fermentatieprocessen die de gezondheid ten goede komen.
Geen extra chips na zoutarm eten
Janssen, A.M. - \ 2015
WageningenWorld (2015)2. - ISSN 2210-7908 - p. 6 - 6.
voedingsmiddelen - zoutgehalte - smaak - voedingsonderzoek bij de mens - reductie - gezondheidsgevaren - gezondheidsbevordering - behoeftenbevrediging - foods - salinity - taste - human nutrition research - reduction - health hazards - health promotion - need gratification
Minder zout in etenswaren zorgt ervoor dat mensen daadwerkelijk minder zout eten; ze zoeken geen zoutcompensatie op andere momenten van de dag.
Aromameter onthult smaakverlies groente en fruit
Woltering, E.J. - \ 2015
WageningenWorld (2015)2. - ISSN 2210-7908 - p. 5 - 5.
groenten - fruit - smaak - bemonsteren - meting - apparatuur - innovaties - houdbaarheid (kwaliteit) - reductie - aroma - verandering - vegetables - fruit - taste - sampling - measurement - apparatus - innovations - keeping quality - reduction - aroma - change
Een tomaat in de koelkast verliest al snel onomkeerbaar zijn smaak. Dat blijkt uit metingen met een nieuw apparaat, ontwikkeld door Wageningen UR. Dat kan snel en nauwkeurig veranderingen in het aroma vaststellen.
Extra smaak door extra led-belichting
Reinders, U. ; Janse, J. ; Hanenberg, M. - \ 2015
Kas techniek (2015)1. - p. 30 - 33.
glastuinbouw - kastechniek - aardbeien - fragaria ananassa - belichting - led lampen - smaak - landbouwkundig onderzoek - teeltsystemen - rassen (planten) - greenhouse horticulture - greenhouse technology - strawberries - fragaria ananassa - illumination - led lamps - taste - agricultural research - cropping systems - varieties
Extra led-belichting maakt aardbeien smaakvoller. Dat blijkt uit een demonstratie bij het Informatie en Demonstratie Centrum (IDC) Smaak in Bleiswijk. Ook bevatten de vruchten meer vitamine C en is de productie hoger. Naast antwoorden roept de demonstratie ook vragen op, zoals welke processen precies aan de goede werking ten grondslag liggen.