Method for preparing polyphenol from betel nut pomace
A technology of betel slag and betel lang, which is applied in the field of polyphenol preparation, can solve the problems of lack of suitable industrial production materials, low energy consumption, extraction rate, and restrictions on wide application, and achieve simple and economical equipment, high reproducibility, The effect of high sample recovery
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Embodiment 1
[0015] A method for preparing polyphenols from betel dregs, comprising the steps of:
[0016] (1) Mix 150g of betel dregs dry powder with 750mL of ethanol in proportion, stir, extract for 4 hours, stand still, filter, extract twice, combine the extracts, and evaporate and dry the extracts at 40°C; the ethanol is volume A mixture of methanol and concentrated hydrochloric acid with a ratio of 99.0:1.0;
[0017] (2) Mix the product obtained in step (1) with petroleum ether in a ratio of 1g: 5mL, extract 3 times, combine the supernatant and recover petroleum ether; add the extract in a ratio of 1g: 5mL Ethyl acetate was extracted three times, and the supernatants were combined and evaporated at 40°C to evaporate the ethyl acetate, and the solid was frozen and freeze-dried to obtain the crude extract of betel slag polyphenols. The extraction rate is 91.2%.
[0018] The crude extract of betel slag polyphenols can be purified by various known methods, and the following methods do n...
Embodiment 2
[0024] (1) Mix 150g of betel slag dry powder with 700mL of ethanol in proportion, stir, extract for 5 hours, let stand, filter, extract once, and evaporate the extract to dryness at 35°C;
[0025] (2) Mix the product obtained in step (1) with petroleum ether in a ratio of 1g: 4mL, extract 4 times, combine the supernatant and recover petroleum ether; add the extract in a ratio of 1g: 4mL Ethyl acetate, extracted 4 times, the combined supernatants were evaporated at 35°C, the ethyl acetate was evaporated, the solid was frozen and then freeze-dried to obtain the crude extract of betel slag polyphenols. The extraction rate is 89.9%.
[0026] The crude extract of betel slag polyphenols can be purified by various known methods, and the following methods do not limit the present invention:
[0027] (1) According to the proportion, dissolve 100mg of the crude polyphenol extract of betel slag in 45mL of ethanol, and filter it with a 45μm organic membrane;
[0028] (2) Pump the filtra...
Embodiment 3
[0033] A method for preparing polyphenols from betel dregs, comprising the steps of:
[0034] (1) Mix 150g of betel slag dry powder with 800mL of ethanol in proportion, stir, extract for 3 hours, let stand, filter, extract for 3 times, combine the extracts, and evaporate and dry the extracts at 45°C;
[0035] (2) Mix the product obtained in step (1) with petroleum ether in a ratio of 1g: 6mL, extract twice, combine the supernatant and recover petroleum ether; add the extract in a ratio of 1g: 6mL Ethyl acetate, extracted twice, the combined supernatants were evaporated at 45°C, the ethyl acetate was evaporated, the solid was frozen and freeze-dried to obtain the crude extract of betel slag polyphenols. The extraction rate is 90.6%.
[0036] The crude extract of betel slag polyphenols can be purified by various known methods, and the following methods do not limit the present invention:
[0037] (1) According to the proportion, dissolve 100mg of the crude polyphenol extract o...
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