|Sustainable natural resource use in rural China. Has China Passed the Lewis Turning Point?CERDI 2009Sustainable natural resource use in rural ChinaHas China Passed the Lewis Turning Point? CERDI 2009
Heerink, N.B.M. ; Qu, F. ; Shi, X. ; Fleisher, B.M. ; Fearn, R. ; Ye, Z. ; Renard, M.F. - \ 2011
NL : Elsevier - 251 p.
MtPM25 is an atypical hydrophobic late embryogenesis-abundant protein that dissociates cold and desiccation-aggregated proteins
Boucher, V. ; Buitink, J. ; Lin, X. ; Boudet, J. ; Hoekstra, F.A. ; Hundertmark, M. ; Renard, D. ; Leprince, O. - \ 2010
Plant, Cell & Environment 33 (2010)3. - ISSN 0140-7791 - p. 418 - 430.
medicago-truncatula seeds - lea proteins - arabidopsis-thaliana - aqueous-solution - dry state - in-vitro - tolerance - germination - stress - water
Late embryogenesis-abundant (LEA) proteins are one of the components involved in desiccation tolerance (DT) by maintaining cellular structures in the dry state. Among them, MtPM25, a member of the group 5 is specifically associated with DT in Medicago truncatula seeds. Its function is unknown and its classification as a LEA protein remains elusive. Here, evidence is provided that MtPM25 is a hydrophobic, intrinsically disordered protein that shares the characteristics of canonical LEA proteins. Screening protective activities by testing various substrates against freezing, heating and drying indicates that MtPM25 is unable to protect membranes but able to prevent aggregation of proteins during stress. Prevention of aggregation was also found for the water soluble proteome of desiccation-sensitive radicles. This inhibition was significantly higher than that of MtEM6, one of the most hydrophilic LEA protein associated with DT. Moreover, when added after the stress treatment, MtPM25 is able to rapidly dissolve aggregates in a non-specific manner. Sorption isotherms show that when it is unstructured, MtPM25 absorbs up to threefold more water than MtEM6. MtPM25 is likely to act as a protective molecule during drying and plays an additional role as a repair mechanism compared with other LEA proteins.
The regular consumption of a polyphenol-rich apple doet not influence endothelial function: a randomised double-blind trial in hypercholesterolemic adults
Auclair, S. ; Chironi, G. ; Milenkovic, D. ; Hollman, P.C.H. ; Renard, C.M. ; Megnien, J.L. ; Gariepy, J. ; Paul, J.L. ; Simon, A. ; Scalbert, A. - \ 2010
European Journal of Clinical Nutrition 64 (2010). - ISSN 0954-3007 - p. 1158 - 1165.
coronary-artery-disease - healthy-young adults - cardiovascular-disease - vascular function - flavonoid intake - postmenopausal women - antioxidant capacity - dependent dilation - oxidative stress - phenolic-acids
Background/objectives: Epidemiological studies suggest that apple consumption is associated with a reduction in cardiovascular disease risk. Apple polyphenols may contribute to explain these effects. Endothelial dysfunction has been associated with early stage of atherosclerosis and polyphenols from various dietary sources have been shown to reverse it. The aim of the present study was to investigate the effect of the consumption of a polyphenol-rich apple on endothelial function. Subjects/methods: In all, 30 hypercholesterolemic volunteers were included in a double-blind, randomized crossover trial. They successively consumed 40¿g of two lyophilized apples, polyphenol-rich and polyphenol-poor, providing respectively 1.43 and 0.21¿g polyphenols per day during two 4-week periods separated by a 4-week washout period. Results: Brachial artery flow-mediated vasodilation (FMD) was assessed at the beginning and at the end of each intervention period. FMD did not differ between the polyphenol-rich and the polyphenol-poor apples, neither did the other cardiovascular disease risk factors (plasma lipids, homocysteine, antioxidant capacity). Conclusions: These data suggest that over a 4-week period, the consumption of a polyphenol-rich apple does not improve vascular function in hypercholesterolemic patients.
Interactions between globular proteins and procyanidins of different degrees of polymerization
Prigent, S.V.E. ; Voragen, A.G.J. ; Koningsveld, G.A. van; Baron, A. ; Renard, C.M. ; Gruppen, H. - \ 2009
Journal of Dairy Science 92 (2009). - ISSN 0022-0302 - p. 5843 - 5853.
bovine serum-albumin - precipitating capacity - condensed tannins - haze formation - binding - grape - milk - polyphenols - products - quality
Interactions of proteins with phenolic compounds occur in food products containing vegetable sources, such as cocoa, cereals, or yogurts containing fruit. Such interactions can modify protein digestion and protein industrial properties. Noncovalent interactions between globular proteins (proteins important in industry) and procyanidins (phenolic compounds present in large quantity in fruits) were studied. The affinity constants between procyanidins of various average degrees of polymerization () and lysozyme or -lactalbumin were measured by isothermal titration calorimetry. The effects of these interactions on protein solubility and foam properties were examined using -lactalbumin and BSA. Weak interactions were found with epicatechin and procyanidin dimers. Procyanidins of n = 5.5 and n = 7.4 showed medium (1.5 x 105 M–1) and high (8.69 x 109 M–1) affinities, respectively, for -lactalbumin at pH 5.5, with n the average number of subunits per oligomer. A positive cooperativity of binding at low procyanidin:protein molar ratios was observed. The affinities of -lactalbumin and lysozyme for procyanidins increased when the pH was close to the isoelectric pH. Solubility of lysozyme was strongly decreased by procyanidins of n = 5.5, whereas -lactalbumin and BSA were less affected. Protein solubility in the presence of procyanidins was not affected by increased ionic strength but increased slightly with temperature. Procyanidins of n = 5.5 and n = 7.4 stabilized the average bubble diameter of foam formed with -lactalbumin but had no effect on foam made from BSA. These results indicate that procyanidins of medium can lead to an undesirable decrease of protein solubility, but may play a positive role in foam stability.
Reduction of colonic inflammation in HLA-B27 transgenic rats by feeding Marie Ménard apples, rich in polyphenols
Castagnini, C. ; Luceri, C. ; Toti, S. ; Bigagli, E. ; Caderni, G. ; Femia, A.P. ; Giovannelli, L. ; Lodovici, M. ; Pitozzi, V. ; Salvadori, M. ; Messerini, L. ; Martin, R. ; Zoetendal, E.G. ; Gaj, S. ; Eijssen, L. ; Evelo, C. ; Renard, C.M. ; Baron, A. ; Dolara, P. - \ 2009
The British journal of nutrition 102 (2009)11. - ISSN 0007-1145 - p. 1620 - 1628.
nf-kappa-b - gradient gel-electrophoresis - 16s ribosomal-rna - polymerase-chain-reaction - gene-expression profiles - bowel-disease - dna-damage - gastrointestinal-tract - bacteroides-vulgatus - ulcerative-colitis
Inflammatory bowel diseases (IBD) are immunomediated ailments affecting millions of individuals. Although diet is regarded as an important factor influencing IBD, there are no accepted dietary recommendations presently available. We administered 7.6 % lyophilised apples obtained from two cultivars (Golden Delicious and Marie Ménard, low and high in polyphenols, respectively) to HLA-B27 transgenic rats which develop spontaneous IBD. After 3 months feeding, rats fed Marie Ménard apples had reduced myeloperoxidase activity (3.6 (sem 0.3) v. 2.2 (sem 0.2) U/g tissue; P <0.05) and reduced cyclo-oxygenase-2 (P <0.05) and inducible NO synthase gene expression (P <0.01) in the colon mucosa and significantly less diarrhoea (P <0.05), compared with control rats. Cell proliferation in the colon mucosa was reduced significantly by feeding Golden Delicious apples, with a borderline effect of Marie Ménard apples. Gene expression profiling of the colon mucosa, analysed using the Whole Rat Genome 4 x 44 K Agilent Arrays, revealed a down-regulation of the pathways of PG synthesis, mitogen-activated protein kinase (MAPK) signalling and TNFalpha-NF-kappaB in Marie Ménard-fed rats. In the stools of the animals of this group we also measured a significant reduction of bacteria of the Bacteriodes fragilis group. In conclusion, the administration of Marie Ménard apples, rich in polyphenols and used at present only in the manufacturing of cider, ameliorates colon inflammation in transgenic rats developing spontaneous intestinal inflammation, suggesting the possible use of these and other apple varieties to control inflammation in IBD patients
The use of the "Woeste Hoeve" wildlife overpass by mammals
Renard, M. ; Visser, A.A. ; Boer, W.F. de; Wieren, S.E. van - \ 2008
Lutra 51 (2008)1. - ISSN 0024-7634 - p. 5 - 16.
zoogdieren - migratie - wegen - diergedrag - wildpassages - veldwerk - veluwe - mammals - migration - roads - animal behaviour - wildlife passages - field work - veluwe
Het onderzoek concentreerde zich op het gebruik van dit wildviaduct door grote tot middelgrote zoogdieren op de Veluwe. Gekeken is of er een toename in gebruik was te zien in vergelijking met de laatste evaluatie in 1989. Daarnaast is onderzocht of de dieren gebruik maken van de totale beschikbare breedte van het viaduct
|Resilience of smallholders: impact of avian influenza on mixed farming systems in the Mekong Delta, Vietnam
Phong, L.T. ; Udo, H.M.J. ; Jansen, J. ; Bosma, R.H. ; Zijpp, A.J. van der - \ 2007
In: Proceedings of the 12th International conference of the Association of Institutions of Tropical Veterinary Medicine, Montpellier, France, 19 - 22 August, 2007. - - p. 383 - 387.
|Village poultry keeping: beyond flocks and animal science (workshop F)
Aklilu, H.A. ; Udo, H.M.J. ; Almekinders, C.J.M. ; Zijpp, A.J. van der - \ 2007
In: Proceedings of the 12th International conference of the Association of Institutions of Tropical Veterinary Medicine, Montpellier, France, 19 - 22 August, 2007. - - p. 379 - 382.
|Gel Formation by Soy Glycinin in Bulk and at Interfaces
Vliet, T. van; Martin, A. ; Renkema, M. ; Bos, M. - \ 2002
In: Plant Biopolymer Science, food and nonfood applications / Renard, D., Della Valle, G., Popineau, Y., Cambridge : Royal Society of Chemistry - p. 241 - 252.
|Pea : an interesting crop for packaging applications
Soest, J.J.G. van; Lewin, D. ; Dumont, H. ; Kappen, F.H.J. - \ 2002
In: Plant biopolymer science : food and non-food applications / D. Renard, G. Della Valle [and] Y. Popineau. - Cambridge : Royal Society of Chemistry, 2002. - (Special Publication / Royal Society of Chemistry ; 276) - p. 267 - 274.
|Instruments politiques pour stimuler un développement agricole durable en Afrique sub-saharienne: Le cas du Cercle de Koutiala au sud-Mali
Sissoko, K. ; Kuyvenhoven, A. ; Ruben, R. ; Kruseman, G. ; Keulen, H. van - \ 2000
In: Farmers and scientists in a changing environment : Assessing research in West Africa. / Renard, C., Krieg, S., Lawrence, P., von Oppen, M., Weikersheim, Germany : Margraf Verlag - ISBN 9783823613183 - p. 255 - 265.
|Farming systems research and bio-economic modelling : An effort to integrate two methodologies
Ruben, R. ; Brons, J.E. ; Djouara, H. ; Sissoko, K. - \ 1999
In: Farmers and Scientists in a Changing Environment : Assessing Research in West Africa / Renard, G., Krieg, S., Lawrence, P., von Oppen, M., - p. 397 - 406.
Mode of action of RG-hydrolase and RG-lyase toward rhamnogalacturonan oligomers. Characterization of degradation products using RG-rhamnohydrolase and RG-galacturonohydrolase.
Mutter, M. ; Renard, C.M.G.C. ; Beldman, G. ; Schols, H.A. ; Voragen, A.G.J. - \ 1998
Carbohydrate Research : an international journal 311 (1998). - ISSN 0008-6215 - p. 155 - 164.
Isolation and structural characterisation of rhamnogalacturonan oligomers generated by controlled acid hydrolysis of sugar-beet pulp.
Renard, C.M.G.C. ; Lahaye, M. ; Mutter, M. ; Voragen, A.G.J. ; Thibault, J.F. - \ 1998
Carbohydrate Research : an international journal 305 (1998). - ISSN 0008-6215 - p. 271 - 280.
Le paillage traditionnel dans la gestion de la fertilite des sols en milieu soudano-sahelien: fonctions biophysiques et incidence sur la production de sorghoin.
Hien, F.G. ; Slingerland, M. ; Hien, V. - \ 1998
In: Soil Fertility Management in West African Land Use Systems: Proc. Regional Workshop, Niamey, Niger. G. Renard et al. Wageningen : Aménagement et Gestion de l'Espace Sylvo-Pastoral au Sahel (Publication de l'Antenne 33) - p. 539 - 539.
|Optimising mulch application for wind erosion protection in the Sahel.
Sterk, G. ; Stroosnijder, L. - \ 1998
In: Soil Fertility Management in West African Land Use Systems: Proc. Regional Workshop, Niamey, Niger. G. Renard et al. (eds.) Margraf Verlag, Weikersheim, Germany - p. 185 - 189.
|Soil nutrient transport by wind in south-west Niger.
Sterk, G. ; Hermann, L. ; Wezel, A. - \ 1998
In: Soil Fertility Management in West African Land Use Systems: Proc. Regional Workshop, Niamey, Niger. G. Renard et al. (eds.) Margraf Verlag, Weikersheim, Germany - p. 215 - 220.
|Beyond the development discourse: dynamic perceptions and management of soil fertility.
Mazzucato, V. ; Niemeijer, D. - \ 1998
In: Soil fertility management in West African land use systems / Renard, G., Neef, A., Becker, K., von Oppen, M., - p. 495 - 504.
|Impact assessment of soil conservation measures: a case study from Burkina Faso.
Graaff, J. de - \ 1998
In: Soil fertility management in West African land use systems / Renard, G., Neef, A., Becker, K., von Oppen, M., - p. 209 - 214.
|Micro-topography, water balance, millet yield and nutrient leaching in a manuring experiment on sandy soil in south-west Niger
Brouwer, J. ; Powell, J.M. - \ 1997
In: Soil Fertility Management in West African Land Use Systems, Niamey, Niger, 1997. G. Renard, A. Neef, K. Becker and M. von Oppen (eds.), Margraf Verlag, Weikersheim, Germany, 1997, p. 349-359, ISBN 3-8236-1272-7