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标题：Effects of Radishes, Apples, and Pears on the Lactic Acid Bacteria and Nutritional and Functional Qualities of Flavored Soy Sauce
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作者：Ashutosh Bahuguna ; Il Guk Jo ; Jong Suk Lee 等
期刊名称：Foods
电子版ISSN：2304-8158
出版年度：2020
卷号：9
期号：11
页码：1562
DOI：10.3390/foods9111562
出版社：MDPI Publishing
摘要：Producers of soy sauce are constantly making efforts to improve the sensory quality and nutritional value of their products. In this study, radishes, apples, and pears were used to prepare a distinctly flavored soy sauce, and the lactic acid bacteria, volatile compound content, and nutritional and functional qualities of the product were compared with two commercial flavored soy sauce products. Comparable physiochemical properties, antioxidant activities (in vitro and cellular), and higher prevalence of lactic acid bacteria (7.74 ± 0.55 log CFU mL–1) were observed in the prepared flavored soy sauce than in commercial flavored soy sauce. The comprehensive enzyme activity profile of the isolated lactic acid bacteria, Tetragenococcus halophilus (NCBI GenBank Accession no. MN270899), revealed the absence of any harmful enzymes such as β-glucuronidase. Moreover, the cell-free extract of T. halophilus showed xanthine oxidase inhibitory activity (half maximal inhibitory concentration (IC50) = 0.79 mg mL–1), suggesting that the product possessed functionality against xanthine oxidase-induced oxidative stress. Additionally, the prepared flavored soy sauce had higher amounts of total free amino acids (48.68 mg mL–1) and organic acids (7.77 mg mL–1). These results suggest that radishes, apples, and pears at a defined ratio are suitable for the large scale production of a flavored soy sauce with improved nutritional and functional qualities.
关键词：cellular antioxidant; fermentation; flavored soy sauce; free amino acids; GC-MS; lactic acid bacteria; Tetragenococcus halophilus cellular antioxidant ; fermentation ; flavored soy sauce ; free amino acids ; GC-MS ; lactic acid bacteria ; Tetragenococcus halophilus