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Dernière mise à jour : Mai 2018

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Human Nutrition Unit

Zone de texte éditable et éditée et rééditée

"GERMLEG" Project

01 January 2019

Evaluation of the germinative capacity of wheat/peas seeds obtained from intercrops as compared to single-crop grown in organic farming and study of the impact of germination on the nutritional quality of flours produced from these seeds.

Financial support from the metaprogram DID'IT (2019-2020). Coordinator: Marine Gueugneau.

Cropping systems, called "intercropping", allow the growing of two different plant species simultaneously on the same surface for a significant period of time. Cereal-legume intercrops represent innovation opportunities with future challenges in the agricultural, environmental and nutritional fields. Because of their complementarity, the combination of cereals and legumes improves the composition of essential amino acids (EAA) compared to needs, giving this mixture a strong nutritional interest. In addition, the consumption of legumes is often limited because of their content in anti-nutritional factors (FAN) decreasing protein digestibility. Therefore, developing new processes are required to limit the content of FAN for the production of human food. From a nutritional point of view, germination (a biological process that starts with the imbibition of a non-dormant quiescent seed and ends at the time of the emergence of the embryo) improves accessibility of the seed protein content, increases the micronutrient content and improves the antioxidant capacities of the seed. Furthermore, germination reduces FAN content in legumes, especially peas. Finally, because of the changes in the carbohydrate compounds of the seed, germination may also alter their AGEs (Advanced glycation end-products, that are able to cause cellular damages) contents, thus impacting the bioavailability of lysine, a limiting EAA in cereal proteins. Thus, the main objective of this project is to evaluate the nutritional quality of germinated flours obtained from wheat/peas intercrops as compared to single-crop farming in growing rats.