Effects of different processing methods on the antioxidant and immune stimulating abilities of garlic.
FOOD SCIENCE & NUTRITION(2019)
摘要
In this study, we determined the antioxidant and immune stimulating abilities of a garlic product developed by freeze drying, heat drying, and solid-state fermentation of heat-dried garlic. Lactobacillus plantarum KCTC21004 and Leuconostoc mesenteroides KCTC13302 were used for the sample fermentation. The optimum conditions for fermentation were 50% (v/w) moisture, a fermentation time of 48hr and a temperature of 37 degrees C. Heat-dried garlic samples fermented with L.plantarum KCTC21004 (HD21004) and L.mesenteroides KCTC13302 (HD13302) showed the highest flavonoid contents while heat-dried garlic (HD) had the lowest flavonoid content. HD21004 contained the highest phenolic compounds, showed the highest antioxidant activity and demonstrated a strong immune stimulating effect while freeze-dried garlic showed the lowest flavonoid and polyphenolic contents. Overall, the heat-dried garlic samples (fermented and unfermented) contained about three times more S-Allylcysteine (SAC) than the freeze-dried samples (FD). The current study demonstrates that heat drying and subsequent fermentation of garlic with L.plantarum KCTC21004 can improve its therapeutic effects.
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关键词
fermentation,garlic,oxidative stress,proinflamatory cytokines,solid-state fermentation
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