|Tolerance of feed regulated mycotoxins by lesser mealworm and black soldier fly from artificially contaminated substrates
Camenzuli, Louise ; Andriessen, R. ; Schelt, J. van; Rijk, T.C. de; Dam, R.C.J. van; Fels, H.J. van der - \ 2018
Tolerance and excretion of the mycotoxins aflatoxin B1, zearalenone, deoxynivalenol, and ochratoxin A by alphitobius diaperinus and hermetia illucens from contaminated substrates
Camenzuli, Louise ; Dam, Ruud van; Rijk, Theo de; Andriessen, Rob ; Schelt, Jeroen van; Fels-Klerx, H.J.I. van der - \ 2018
Toxins 10 (2018)2. - ISSN 2072-6651
Alphitobius diaperinus - Bioaccumulation - Black soldier fly - Contaminants - Excretion - Feed safety - Food safety - Hermetia illucens - Insects - Lesser mealworm
This study aimed to investigate the potential accumulation of mycotoxins in the lesser mealworm (Alphitobius diaperinus, LMW) and black soldier fly (Hermetia illucens, BSF) larvae. Feed was spiked with aflatoxin B1, deoxynivalenol (DON), ochratoxin A or zearalenone, and as a mixture of mycotoxins, to concentrations of 1, 10, and 25 times the maximum limits set by the European Commission for complete feed. This maximum limit is 0.02 mg/kg for aflatoxin B1, 5 mg/kg for DON, 0.5 mg/kg for zearalenone and 0.1 mg/kg for ochratoxin A. The mycotoxins and some of their metabolites were analysed in the larvae and residual material using a validated and accredited LC-MS/MS-based method. Metabolites considered were aflatoxicol, aflatoxin P1, aflatoxin Q1, and aflatoxin M1, 3-acetyl-DON, 15-acetyl-DON and DON-3-glycoside, and α- and β-zearalenol. No differences were observed between larvae reared on mycotoxins individually or as a mixture with regards to both larvae development and mycotoxin accumulation/excretion. None of the mycotoxins accumulated in the larvae and were only detected in BSF larvae several orders of magnitude lower than the concentration in feed. Mass balance calculations showed that BSF and LMW larvae metabolized the four mycotoxins to different extents. Metabolites accounted for minimal amounts of the mass balance, except for zearalenone metabolites in the BSF treatments, which accounted for an average maximum of 86% of the overall mass balance. Both insect species showed to excrete or metabolize the four mycotoxins present in their feed. Hence, safe limits for these mycotoxins in substrates to be used for these two insect species possibly could be higher than for production animals. However, additional analytical and toxicological research to fully understand the safe limits of mycotoxins in insect feed, and thus the safety of the insects, is required.
Weight loss decreases self-reported appetite and alters food preferences in overweight and obese adults : Observational data from the DiOGenes study
Andriessen, Charlotte ; Christensen, Pia ; Vestergaard Nielsen, Lone ; Ritz, Christian ; Astrup, Arne ; Meinert Larsen, Thomas ; Martinez, J.A. ; Saris, Wim H.M. ; Baak, Marleen A. van; Papadaki, Angeliki ; Kunesova, Marie ; Jebb, Susan ; Blundell, John ; Lawton, Clare ; Raben, Anne - \ 2018
Appetite 125 (2018). - ISSN 0195-6663 - p. 314 - 322.
Body weight maintenance - Hunger - LCD - Leeds food choice questionnaire - Visual analogue scale - Weight loss
People with obesity often struggle to maintain their weight loss after a weight loss period. Furthermore, the effect of weight loss on appetite and food preferences remains unclear. Hence this study investigated the effect of weight loss on subjective appetite and food preferences in healthy, overweight and obese volunteers. A subgroup of adult participants (n = 123) from the Diet Obesity and Genes (DiOGenes) study (subgroup A) was recruited from across six European countries. Participants lost ≥8% of initial body weight during an 8-week low calorie diet (LCD). Subjective appetite and food preferences were measured before and after the LCD, in response to a standardized meal test, using visual analogue rating scales (VAS) and the Leeds Food Choice Questionnaire (FCQ). After the LCD, participants reported increased fullness (p < 0.05), decreased desire to eat (p < 0.05) and decreased prospective consumption (p < 0.05) after consuming the test meal. An interaction effect (visit x time) was found for hunger ratings (p < 0.05). Area under the curve (AUC) for hunger, desire to eat and prospective consumption was decreased by 18.1%, 20.2% and 21.1% respectively whereas AUC for fullness increased by 13.9%. Preference for low-energy products measured by the Food Preference Checklist (FPC) decreased by 1.9% before the test meal and by 13.5% after the test meal (p < 0.05). High-carbohydrate and high-fat preference decreased by 11.4% and 16.2% before the test meal and by 17.4% and 22.7% after the meal (p < 0.05). No other effects were observed. These results suggest that LCD induced weight loss decreases the appetite perceptions of overweight volunteers whilst decreasing their preference for high-fat-, high-carbohydrate-, and low-energy products.
Er is geen enkel kruid tegen gewassen. Japanse duizendknoop is aan een forse opmars bezig in het groene hart
Dijk, C.J. van - \ 2017
|Public powers: official controls, enforcement and incident management
Andriessen, F. ; Szajkowska, A. ; Meulen, B.M.J. van der - \ 2014
In: EU Food Law Handbook / van der Meulen, B.M.J., Wageningen : Wageningen Academic Publishers - ISBN 9789086862467 - p. 403 - 420.
|Een esthetica van verval
Keulartz, F.W.J. - \ 2013
In: Hugo Tieleman, Crossing borders. Works 2007-2012, Catalogus Livingstone Gallery, 2012 / Andriessen, M., Den Haag : Livingstone editions - ISBN 9789075884289 - p. 56 - 58.
|Doing good/being nice? Aid legitimacy and mutual imaging of aid workers and aid recipients
Hilhorst, D. ; Andriessen, G. ; Kemkens, L. ; Weijers, L. - \ 2013
In: Disaster, Conflict and Society in Crisis. Everyday politics of crisis response / HIlhorst, D., London and New York : Routledge Humanitarian studies (Routledge humanitarian studies 1) - ISBN 9780415640817 - p. 258 - 274.
|Arrangementen van interventies
Cremers, P.H.M. - \ 2011
In: Handboek ontwerpgericht wetenschappelijk onderzoek. Wetenschap met effect / van Aken, J., Andriessen, D., Den Haag : Boom Lemma - ISBN 9789059317468 - p. 205 - 216.
Evaluation of Methods for Sampling the Malaria Vector Anopheles darlingi (Diptera, Culicidae) in Suriname and the Relation With Its Biting Behavior
Hiwat-van Laar, H. ; Rijk, M. de; Andriessen, R. ; Koenraadt, C.J.M. ; Takken, W. - \ 2011
Journal of Medical Entomology 48 (2011)5. - ISSN 0022-2585 - p. 1039 - 1046.
carbon-dioxide - light-traps - differential attractiveness - mosquitos diptera - brazilian amazon - field-evaluation - sensu-stricto - endemic area - gambiae - tanzania
The effectiveness of CO2-baited and human-baited mosquito traps for the sampling of Anopheles darlingi Root was evaluated and compared with human landing collections in Suriname. Biting preferences of this mosquito on a human host were studied and related to trapping data. Traps used were the Centers for Disease Control and Prevention Miniature Light trap, the BG Sentinel mosquito trap, the Mosquito Magnet Liberty Plus mosquito trap (MM-Plus), and a custom-designed trap. Carbon dioxide and humans protected by a bed net were used as bait in the studies. The number of An. darlingi collected was greater with human landing collections than with all other collection methods. An. darlingi did not show a preference for protected humans over CO2 bait. The BG Sentinel mosquito trap with CO2 or human odor as bait and the MM-Plus proved the best alternative sampling tools for An. darlingi. The BG Sentinel mosquito trap with CO2 or human odor as bait was also very efficient at collecting Culex spp. In a field study on biting preferences of wild An. darlingi, the females showed directional biting behavior (P <0.001), with a majority of females (93.3%) biting the lower legs and feet when approaching a seated human host. Higher efficiency of the closer-to-the-ground collecting MM-Plus and BG Sentinel mosquito trap when compared with the other trapping methods may be a result of a possible preference of this mosquito species for low-level biting. It is concluded that odor-baited sampling systems can reliably collect An. darlingi, but the odor bait needs to be improved, for instance, by including host-specific volatiles, to match live human baits.
Carbon dioxide baited trap catches do not correlate with human landing collections of Anopheles aquasalis in Suriname
Hiwat-van Laar, H. ; Andriessen, R. ; Rijk, M. de; Koenraadt, C.J.M. ; Takken, W. - \ 2011
Memorias Do Instituto Oswaldo Cruz 106 (2011)3. - ISSN 0074-0276 - p. 360 - 364.
light traps - malaria vectors - mosquitos - culicidae - diptera - tanzania - 1-octen-3-ol - gambiae - attractiveness - surveillance
Three types of carbon dioxide-baited traps, i.e., the Centers for Disease Control Miniature Light Trap without light, the BioGents (BG) Sentinel Mosquito Trap (BG-Sentinel) and the Mosquito Magnet® Liberty Plus were compared with human landing collections in their efficiency in collecting Anopheles (Nyssorhynchus) aquasalis mosquitoes. Of 13,549 total mosquitoes collected, 1,019 (7.52%) were An. aquasalis. Large numbers of Culex spp were also collected, in particular with the (BG-Sentinel). The majority of An. aquasalis (83.8%) were collected by the human landing collection (HLC). None of the trap catches correlated with HLC in the number of An. aquasalis captured over time. The high efficiency of the HLC method indicates that this malaria vector was anthropophilic at this site, especially as carbon dioxide was insufficiently attractive as stand-alone bait. Traps using carbon dioxide in combination with human odorants may provide better results.
Differential attraction of malaria mosquitoes to volatile blends produced by human skin bacteria
Verhulst, N.O. ; Andriessen, R. ; Groenhagen, U. ; Bukovinszkine-Kiss, G. ; Schulz, S. ; Takken, W. ; Loon, J.J.A. van; Schraa, G. ; Smallegange, R.C. - \ 2010
PLoS ONE 5 (2010)12. - ISSN 1932-6203 - 9 p.
gambiae-sensu-stricto - human axillary odor - l-lactic acid - anopheles-gambiae - aedes-aegypti - pseudomonas-aeruginosa - diptera-culicidae - electrophysiological responses - pyruvate fermentation - oviposition responses
The malaria mosquito Anopheles gambiae sensu stricto is mainly guided by human odour components to find its blood host. Skin bacteria play an important role in the production of human body odour and when grown in vitro, skin bacteria produce volatiles that are attractive to A. gambiae. The role of single skin bacterial species in the production of volatiles that mediate the host-seeking behaviour of mosquitoes has remained largely unknown and is the subject of the present study. Headspace samples were taken to identify volatiles that mediate this behaviour. These volatiles could be used as mosquito attractants or repellents. Five commonly occurring species of skin bacteria were tested in an olfactometer for the production of volatiles that attract A. gambiae. Odour blends produced by some bacterial species were more attractive than blends produced by other species. In contrast to odours from the other bacterial species tested, odours produced by Pseudomonas aeruginosa were not attractive to A. gambiae. Headspace analysis of bacterial volatiles in combination with behavioural assays led to the identification of six compounds that elicited a behavioural effect in A. gambiae. Our results provide, to our knowledge, the first evidence for a role of selected bacterial species, common on the human skin, in determining the attractiveness of humans to malaria mosquitoes. This information will be used in the further development of a blend of semiochemicals for the manipulation of mosquito behaviour.
Cultural creatives willen alles weten
Andriessen, V. - \ 2006
Het Financieele Dagblad (2006). - p. 7 - 7.
|Manage communities of practice in organisations : rule them, support them, or do not bother them?
Laere, J. van - \ 2002
In: Support for knowledge sharing in communities / Erik Andriessen, J.H., Soekijad, Maura, Keasberry, Helen J., - p. 71 - 89.
|Managing communities of practice in organisations
Laere, J. van - \ 2002
In: Support for knowledge sharing in communities / Andriessen, J.H.E., Soekijad, M., Keasberyy, H.J., Delft : Delft University Press - p. 51 - 89.
Home dampness and respiratory health status in European children.
Andriessen, J.W. ; Roemer, W. ; Brunekreef, B. - \ 1998
Clinical and Experimental Allergy 28 (1998). - ISSN 0954-7894 - p. 1191 - 1200.
Living in a damp home has been associated with impaired respiratory health in previous studies, but objective data on lung function variability and atopy have been lacking from most studies. Data collected in the winter of 1993-1994 in the framework of the PEACE study (Pollution Effects on Asthmatic Children in Europe) were used to study the association between home dampness and Peak Flow (PEF) variability, frequency of respiratory symptoms and relief medication use during the period of observation. Children were selected with a screening questionnaire on the basis of positive answers to questions on symptoms of asthma and chronic cough. Children were instructed to perform PEF measurements with Miniwright PEF meters twice daily over a period of 2 months. Parents kept diaries on respiratory symptoms and medication use of their children. Data on demographic and housing characteristics were derived from a parent-administered questionnaire. As indicators for home dampness reported moisture stains and moulds were used. Children were tested for atopy with skin-prick tests. Data from 1614 children from 13 centres in 10 different countries were available for analysis. Linear regression models and prevalence rate ratios were used to investigate the association between home dampness and PEF variability and the period prevalence of cough, phlegm, lower and upper respiratory symptoms and bronchodilator use. In atopic children, PEF variability was positively related to self-reported moulds but not to moisture stains. The period prevalence of cough and upper respiratory symptoms was significantly higher in children living in houses with reported moulds, compared with 'dry' homes. These results show that self-reported moulds in homes are associated with objective as well as subjective markers of airway lability in European children with chronic respiratory symptoms.
|The relationship between peak flow variability, acute respiratory symptoms and home dampness in children.
Roemer, W. ; Andriessen, J.W. ; Brunekreef, B. - \ 1997
European Respiratory Journal 10 (1997)suppl 25. - ISSN 0903-1936 - p. 231S - 231S.
|Vocht in huizen, luchtwegklachten en variatie in PEF.
Andriessen, J.W. ; Roemer, W. ; Brunekreef, B. - \ 1997
Tijdschrift voor sociale geneeskunde 75 (1997)middenkatern. - ISSN 0040-7607 - p. 43 - 43.
|Vetgehalte en vetzuursamenstelling van voedingsmiddelen, deel 7 en 8. Gebak en Koekjes. Diversen, chips en sauzen
Bovenkamp, P. van de; Andriessen-Bos, J. ; Germing-Nouwen, C. ; Hautvast, J.G.A.J. - \ 1978
Voeding 39 (1978). - ISSN 0042-7926 - p. 203 - 20.
|Vetgehalte en vetzuursamenstelling van voedingsmiddelen, deel 6. Vlees en Vleeswaren
Bovenkamp, P. van de; Andriessen-Bos, J. ; Germing-Nouwen, C. ; Hautvast, J.G.A.J. - \ 1978
Voeding 39 (1978). - ISSN 0042-7926 - p. 8 - 11.
|Vetgehalte en vetzuursamenstelling van voedingsmiddelen. Automatiekwaren
Bovenkamp, P. van de; Andriessen-Bos, J. ; Germing-Nouwen, C. ; Hautvast, J.G.A.J. - \ 1977
Voeding 38 (1977). - ISSN 0042-7926 - p. 418 - 426.