Affiliation:
1. College of Food Science and Engineering Henan University of Technology Zhengzhou Henan Province China
Abstract
SummaryThe flour extraction rate determines the components of wheat flour. However, the correlation between variations in components resulting from flour extraction rate and the protein digestion characteristics remains to be clarified. In this study, digestion characteristic of wheat flour protein influenced by flour extraction rates was investigated. The results indicated that the degree of protein hydrolysis, the number of peptides at the intestinal stage and the digestive rate constant (k) at the gastric stage exhibited a significant increase as the flour extraction rate increased (35%–85%). Moreover, wheat flour with 85% extraction rate presented the highest protein hydrolysis degree (25.85%), the most peptides (n = 79) and the maximum intestinal digestion rate constant (k = 0.0285). Therefore, increasing the flour extraction rate from 75% to 85% can improve the wheat flour protein digestibility in conventional milling, thereby establishing a fundamental basis for nutritional control of flour products.
Funder
National Key Research and Development Program of China
China Postdoctoral Science Foundation