期刊
FOOD SCIENCE AND TECHNOLOGY RESEARCH
卷 29, 期 2, 页码 141-146出版社
JAPANESE SOC FOOD SCI & TECHNOLOGY
DOI: 10.3136/fstr.FSTR-D-22-00167
关键词
antioxidant activity; Rhizopus; soybean; tempe
Tempe, a traditional Indonesian fermented soy-based food, has higher antioxidant activity than unfermented soybeans. This study compared the antioxidant activities of tempe fermented with three Rhizopus species and unfermented soybeans using assays for 11 -carotene bleaching, antioxidative potential, and oxidative stabilization. The results showed that tempe fermented with R. stolonifer had the highest antioxidant activity, which may be attributed to the production of isoflavone aglycones and hydroxylated compounds during fermentation.
Tempe, a traditional Indonesian fermented soy-based food, reportedly has higher antioxidant activity than unfermented soybeans. In 2015, the Codex Alimentarius defined the starters of soybean tempe to be Rhizopus microsporus var. oligosporus, Rhizopus oryzae, and/or Rhizopus stolonifer. Most previous studies have focused only on tempe prepared with R. oligosporus. In this study, we compared the antioxidant activities of tempe fermented with three Rhizopus species and unfermented soybeans using assays for 11 -carotene bleaching (antioxidant activity), antioxidative potential, and oxidative stabilization. The 11 -carotene bleaching and antioxidative potential assays indicated that the tempe fermented with R. stolonifer had higher antioxidant activity than the tempe fermented with R. oligosporus and R. oryzae. We speculate that the high antioxidant properties of this product are attributable to the isoflavone aglycones and hydroxylated compounds produced by fermentation.
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