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Ain Shams University (2019)

EFFECT OF SALINE WATER AND YEAST ON THE COMPOSITION AND NUTRITION VALUE OF SOME SEED SPROUTS

MOSTAFA, ISLAM MOHAMED TORK GABER

Titre : EFFECT OF SALINE WATER AND YEAST ON THE COMPOSITION AND NUTRITION VALUE OF SOME SEED SPROUTS

Auteur : MOSTAFA, ISLAM MOHAMED TORK GABER.

Etablissement de soutenance : Ain Shams University

Grade : Doctor of Philosophy (PhD) in Agricultural Sciences 2019

Résumé partiel
Germination is a way to improve agricultural productivity and it is known that the germination process generally improves the nutritional quality of seeds, not only by the reduction of antinutritive compounds, but by increasing the levels of free amino acids, available carbohydrates, dietary fiber, and other components, and also increasing the functionality of the seeds due to the subsequent increase in the bioactive compounds. The improvement is usually a result of breakdown of complex macromolecules as protein and starch into smaller and more digestible molecules. In particular, using some elicitors in germination for enhances the nutrition value of the seeds by sprouting. As the biosynthesis of several secondary metabolites in plants is usually a defense response of plants to biotic and abiotic stresses, their performance can be effectively stimulated by biotic and abiotic elicitors, making elicitation is one of the most effective strategies for improving bioactive secondary metabolite production in plant tissue. Yeast polysaccharide (YPS) is an efficient biotic elicitor for stimulating secondary metabolite production in plant cell. For their highly metabolic activities after harvesting, radish and cowpea seeds were selected for performance of this study. The effect of using abiotic elicitor (saline water, by NaCl at different concentrations) and biotic elicitor (Saccharomyces cerevisiae) on sprouting of radish and cowpea seeds have been investigated. After germinating radish seeds for six days and germinating cowpea seeds for five days using elicitors, chemical analysis and determination for phytochemicals contents have been carried out. According to the best results of hypocotyl, radical, whole sprout length and weight of 10 fresh and dry sprouts, 2000 ppm NaCl concentration was found to be the appropriate concentration for performance the sprouting of both radish and cowpea seeds for making the chemical analysis and phytochemical contents. Results showed a promising efficiency by sprouting whereas an appreciable increasing in the analysis comparing to dry seed for both radish and cowpea seeds.

Présentation étendue (EULC)

Page publiée le 29 mars 2020