Min Huang , Li Li , Xinran Cheng , Ran Qiu , Yi Wang , Xianjiang Zhou , Xuyan Zong
{"title":"内源蛋白质组分对酒糟淀粉特性的影响机理研究","authors":"Min Huang , Li Li , Xinran Cheng , Ran Qiu , Yi Wang , Xianjiang Zhou , Xuyan Zong","doi":"10.1016/j.foodchem.2025.144689","DOIUrl":null,"url":null,"abstract":"<div><div>Some starch in distiller's grains has low utilization rate and serious waste of resources due to its combination with endogenous non-starch components (proteins). This study explored the impact of removing different endogenous proteins on starch molecules' physicochemical structure and brewing characteristics. Results revealed β-sheet-dominated proteins in fermented grains, with alkali-soluble proteins being most abundant (37.47 %). The removal of protein resulted in the formation of a porous structure on the surface of starch. The swelling degree, freeze-thaw stability and in vitro digestion characteristics of each sample were significantly improved except as solubility. Among them, alcohol-soluble protein had obvious promoting effect on pore formation and gelatinization, and both alcohol-soluble protein and alkali-soluble protein could weaken the interaction of starch complex and improve the brewing performance. This provides a new idea for improving the efficient utilization of starch and reducing the waste of resources in the future liquor brewing process.</div></div>","PeriodicalId":318,"journal":{"name":"Food Chemistry","volume":"486 ","pages":"Article 144689"},"PeriodicalIF":9.8000,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study on the influence mechanism of endogenous protein components on the characteristics of distiller's grains starch\",\"authors\":\"Min Huang , Li Li , Xinran Cheng , Ran Qiu , Yi Wang , Xianjiang Zhou , Xuyan Zong\",\"doi\":\"10.1016/j.foodchem.2025.144689\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Some starch in distiller's grains has low utilization rate and serious waste of resources due to its combination with endogenous non-starch components (proteins). This study explored the impact of removing different endogenous proteins on starch molecules' physicochemical structure and brewing characteristics. Results revealed β-sheet-dominated proteins in fermented grains, with alkali-soluble proteins being most abundant (37.47 %). The removal of protein resulted in the formation of a porous structure on the surface of starch. The swelling degree, freeze-thaw stability and in vitro digestion characteristics of each sample were significantly improved except as solubility. Among them, alcohol-soluble protein had obvious promoting effect on pore formation and gelatinization, and both alcohol-soluble protein and alkali-soluble protein could weaken the interaction of starch complex and improve the brewing performance. This provides a new idea for improving the efficient utilization of starch and reducing the waste of resources in the future liquor brewing process.</div></div>\",\"PeriodicalId\":318,\"journal\":{\"name\":\"Food Chemistry\",\"volume\":\"486 \",\"pages\":\"Article 144689\"},\"PeriodicalIF\":9.8000,\"publicationDate\":\"2025-05-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Food Chemistry\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0308814625019405\",\"RegionNum\":1,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Food Chemistry","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0308814625019405","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
Study on the influence mechanism of endogenous protein components on the characteristics of distiller's grains starch
Some starch in distiller's grains has low utilization rate and serious waste of resources due to its combination with endogenous non-starch components (proteins). This study explored the impact of removing different endogenous proteins on starch molecules' physicochemical structure and brewing characteristics. Results revealed β-sheet-dominated proteins in fermented grains, with alkali-soluble proteins being most abundant (37.47 %). The removal of protein resulted in the formation of a porous structure on the surface of starch. The swelling degree, freeze-thaw stability and in vitro digestion characteristics of each sample were significantly improved except as solubility. Among them, alcohol-soluble protein had obvious promoting effect on pore formation and gelatinization, and both alcohol-soluble protein and alkali-soluble protein could weaken the interaction of starch complex and improve the brewing performance. This provides a new idea for improving the efficient utilization of starch and reducing the waste of resources in the future liquor brewing process.
期刊介绍:
Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.