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Regulation on the quality of yogurt by phenolic fraction of mulberry pomace supplemented before and after fermentation

文献类型: 外文期刊

作者: Du, Huaxin 1 ; Wang, Xuping 1 ; Yang, Huaigu 1 ; Zhu, Fan 3 ; Liu, Jie 4 ; Cheng, Jingrong 1 ; Lin, Yaosheng 1 ; Tang, Daobang 1 ; Liu, Xueming 1 ;

作者机构: 1.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Minist Agr & Rural Affairs, Guangdong Key Lab Agr Prod Proc,Key Lab Funct Food, Guangzhou 510610, Peoples R China

2.Jiangxi Agr Univ, Coll Biosci & Bioengn, Nanchang 330045, Peoples R China

3.Univ Auckland, Sch Chem Sci, Private Bag 92019, Auckland 1142, New Zealand

4.Guangdong Yantang Dairy Co Ltd, Guangzhou 510700, Peoples R China

5.133 Yihenglu,Dongguanzhuang, Guangzhou 510610, Peoples R China

关键词: Mulberry pomace; Phenolic compound; Yogurt; Quality; Protein hydrolysis; ACE-I activity

期刊名称:FOOD CONTROL ( 影响因子:6.0; 五年影响因子:5.8 )

ISSN: 0956-7135

年卷期: 2023 年 144 卷

页码:

收录情况: SCI

摘要: The effects of phenolic fraction of mulberry pomace on yogurt quality were investigated. Polyphenol-enriched extract of mulberry pomace (MPPE), rich in phenols, anthocyanins and proanthocyanidins, was incorporated to yogurt before and after fermentation at 0.50%, 0.75%, 1.00% and 1.25% (w/v), respectively. The addition either before or after fermentation decreased L* and b* values, increased a* value, reduced syneresis and changed textural properties. MPPE added before fermentation inhibited lactic acid bacteria (LAB) growth, increased particle size, inhibited protein hydrolysis and active peptide release, and reduced ACE-I activity of yogurt. When added after fermentation, MPPE at moderate levels (within 1.00%) promoted LAB growth, reduced pH value and increased total acid content, decreased particle size, promoted protein hydrolysis and active peptide release, and increased ACE-I activity. Phenolics in mulberry pomace exert unique effects on the physi-cochemical and textural properties of yogurt and adding MPPE after fermentation was more beneficial to improve yogurt quality.

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