Abstract
Food fermentation can improve food nutritional value and sensory performance, it is considered as an ecofriendly bioprocessing technology. In this work, a fermented natto chestnut food was firstly developed and its active ingredients and functional properties were systematically studied. Through systematic experimental screening, including a single factor experiment and Box-Behnken design, the fermentation parameters of chestnut were optimized and selected. Under the optimal fermentation conditions, fermentation time 56h, temperature 38℃ and 5% inoculum concentration, the fibrinolytic activity of the natto-chestnut reached 6479IU/g. Meanwhile, higher antioxidant activity of the natto-chestnut was obtained due to the increased contents of total phenolic, total flavonoid and VC. In addition, α-glucosidase inhibition activity was also improved in the natto-chestnut. These results indicated that fermented chestnut could be a new dietary supplement with higher quality and better activities for people's health.
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