Application of aspergillus awamori in preparation of quercetin by fermenting lichee peel
A technology of lychee peel and Aspergillus awamori, applied in the direction of organic chemistry, can solve the problem that the potential value of lychee peel has not been explored, and achieve strong DPPH free radical scavenging activity, efficient acquisition, and new effects.
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[0022] 1) Select lychee fruits that are harvested in sunny days, eight to nine mature, free from mechanical damage, diseases and insect pests, washed with clean water, peeled off by hand, dried in the sun, crushed with a plant grinder, passed through a 1mm sieve, and placed in a dry environment Preserve to obtain lychee peel powder;
[0023] 2) Take 30 2000mL triangular flasks and add 100g of lychee peel powder, then add 100mL of distilled water as fermentation medium, and sterilize at 121°C for 20min. Take 1 mL of the spore suspension of Aspergillus awamori (Aspergillus awamori) GIM3.4 and add it to the fermentation medium of each bottle, mix well, culture at 30°C for 6 days, and stir the medium every 2 days to obtain a fermentation culture.
[0024] 3) Add 500mL of 60% ethanol aqueous solution to each bottle of fermentation culture, 210W ultrasonic extraction for 30min, filter, and extract once again under the same conditions, combine the filtrate, concentrate under reduced ...
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