Effects of Saccharomyces cerevisiae Fermentation on Off-Odour Reduction and Flavour Compounds in Pig Large Intestines
文献类型： 外文期刊
作者： Liang, Ye-Xing 1 ; Li, Yun-Cheng 2 ; Cao, Zheng 2 ; Li, Xue 1 ; Zhang, Ling 1 ; Meng, Fan-Bing 2 ; Zhou, Yong-Hua 3 ;
作者机构： 1.Chongqing Acad Agr Sci, Agr Prod Proc Inst, Chongqing 401329, Peoples R China
2.Chengdu Univ, Food Secur Publ & Educ Base Sichuan Prov, Chengdu 610106, Peoples R China
3.Xiaojin Cty Ronggong Zangzhai Food Co., Ltd., Aba Tibetan & Qiang Autonomous Prefecture, Barkam 624299, Peoples R China
关键词：
pig large intestines;
期刊名称：FOODS （ 影响因子：5.1； 五年影响因子：5.6 ）
ISSN：
年卷期： 2025 年 14 卷 13 期
页码：
收录情况： SCI
摘要： Pig large intestines (PLIs) are usually processed into various dishes for consumption through cooking methods such as stir frying, stewing, and braising, which are difficult for many consumers to accept because of their unique and pungent off-odours. To reduce the number of off-odour substances present in PLIs, we compared the effects of an untreated control group (blank), added flour (WF), and added S. cerevisiae mixed 4% flour in PLIs for fermentation (SC) on the treatment of PLIs. We analysed colour, thiobarbituric acid reactive substance (TBARS) values, and total volatile basic nitrogen (TVB-N) values; additionally, sensory evaluations were performed. The results showed that after 5 h of fermentation, the S. cerevisiae mixed flour exhibited the most significant effect on reducing the off-odour of PLIs, exhibited the least effect on the TBARS value and TVB-N was controlled within a reasonable range, while simultaneously maintaining good quality. A total of 415 volatile compounds were identified via flavouromics. Combined with principal component analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA), the key off-odour substances, including indole (faecal odour), 2-pentylthiophene (fat odour), (E)-2-octenal (fishy odour), and 2-methoxy-phenol (smoky odour), were reduced by 28.1%, 23.90%, 21%, and 22.89%, respectively, after fermentation. Moreover, the content of ethyl octanoate increased 31.04-fold, which enriched the flavour components of the PLIs. The results showed that fermentation of S. cerevisiae mixed flour could be used as a method to reduce the off-odours of PLIs.
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