开菲尔发酵复合果蔬固体饮品的制备及体外功能研究
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陈树俊(1964—),男,山西大学教授。E-mail:chenshujun515@163.com

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山西省重点研发计划项目(编号:201903D221034)


Preparation of solid drink with kefir fermented compound fruits and vegetables and its functions in vitro
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    摘要:

    以开菲尔发酵剂发酵苹果浆—番茄酱—沙棘原汁复合果蔬,再添加适量菊粉、低聚果糖和麦绿素,经真空冷冻干燥制成一款休闲健康的固体饮品。以乳酸菌、酵母菌活菌数为指标,通过单因素及响应面试验,优化发酵复合果蔬发酵工艺。将发酵冻干固体饮品制成不同浓度梯度稀释液,以未发酵的冻干样品作对照,分析测定样品的体外降糖、降脂和抗氧化能力。研究结果显示,最佳发酵工艺为发酵时间46.4 h、接种量8.0%、发酵温度31 ℃,该条件下发酵果蔬乳酸菌、酵母菌活菌数分别为7.58×1011,7.41×1011 CFU/mL。发酵组降糖、降脂和抗氧化能力均高于对照组,其中,发酵组对牛黄胆酸钠的结合作用(降脂能力)和羟基自由基清除率(抗氧化能力)极显著高于对照组(P<0.01)。

    Abstract:

    Taking the compound fruits and vegetables with Kefir fermented apple pulp-ketchup-sea buckthorn juice, by adding the right amount of inulin, fructooligosaccharides and chlorophyll, a leisure health solid drink was made by freeze-drying in vacuum. With the viable count of Lactobacillus and yeast as indicators, single factor and response surface tests were used to optimize fermentation process. Fermented freeze-dried solid drink were made to different concentration gradients, using unfermented freeze-dried samples as a control, and samples were used to analyze and determine the capacity of hypoglycemic, lipid-lowering and antioxidant in vitro. The results showed that the optimal fermentation conditions were: fermentation time of 46.4 h, inoculum amount of 8.0% and fermentation temperature of 31 ℃. Under these conditions, the viable count of lactobacillus and yeast of the fermented compound fruits and vegetables were 7.58×1011, 7.41×1011 CFU/mL, respectively. The fermented group has higher glucose, lipid-lowering and antioxidant capacity than the control group, and the binding amount of sodium taurocholate (lipid-lowering capacity) and hydroxyl radical scavenging rate (antioxidant capacity) of fermented group is significantly higher than that of the control group (P<0.01).

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陈树俊,罗佳.开菲尔发酵复合果蔬固体饮品的制备及体外功能研究[J].食品与机械,2020,(4):196-201.
CHEN Shu-jun, LUO Jia. Preparation of solid drink with kefir fermented compound fruits and vegetables and its functions in vitro[J]. Food & Machinery,2020,(4):196-201.

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  • 在线发布日期: 2023-02-16
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