Ginkgo leaf extraction process and method for processing raw ginkgo Pu'er tea
A technology of raw Pu-erh tea and extraction process, applied in the direction of pre-extraction tea treatment, etc., can solve the problems of great difference in texture, difficult to popularize, different picking time, etc., to achieve convenient carrying and drinking, improve product efficacy, and advanced processing technology. Effect
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[0039] Example 1
[0040] Ginkgo biloba extraction process:
[0041] (1) Take dried ginkgo leaves and crush them into 450 mesh fine powder; (2) Take 10 kg of fine ginkgo leaves and add 200 kg of ethanol with a concentration of 35%, stir and mix evenly, after soaking for 6 hours, heat at 65°C and set the speed to 45rpm , Stir and extract twice, 3.5h for the first extraction and 2.5h for the second extraction respectively. Combine the extracts and filter with 350 mesh industrial filter cloth. The filtrate is centrifuged at 8000r / min for 15min to obtain the supernatant; (3) Take the supernatant and use a 0.22μm microporous filter membrane to finely filter to obtain a fine filtrate; (4) Take the fine filtrate to recover the ethanol under reduced pressure, and concentrate it to 10 g raw dried ginkgo leaves / ml concentrated juice for use.
Example Embodiment
[0042] Example 2
[0043] (1) Take dried ginkgo leaves and crush them into 550 mesh fine powder; (2) Take 10 kg of fine ginkgo leaves and add 300 kg of ethanol with a concentration of 45%, stir and mix evenly, after soaking for 5 hours, heat at 55°C and set the speed to 35rpm, stirring and extracting twice, respectively, the first extraction for 3.5h, the second extraction for 2.5h, combine the extracts, filter with 350 mesh industrial filter cloth, the filtrate is centrifuged at 10000r / min for 15min to obtain the supernatant; (3 ) Take the supernatant and use a 0.22μm microporous filter membrane to finely filter to obtain a fine filtrate; (4) Take the fine filtrate to recover ethanol under reduced pressure, and concentrate it to 10 g raw dried ginkgo biloba leaves / ml concentrated juice for use.
Example Embodiment
[0044] Example 3
[0045] (1) Take dried ginkgo biloba leaves and pulverize into 650 mesh fine powder; (2) Take 10 kg of ginkgo biloba powder and add 250 kg of ethanol with a concentration of 55%, stir and mix evenly, soak for 4 hours, heat at 45°C and set the speed to 25rpm, stirring and extracting twice, 3.5h for the first extraction and 2.5h for the second extraction respectively. Combine the extracts and filter with a 350 mesh industrial filter cloth. The filtrate is centrifuged at 9000r / min for 15min to obtain the supernatant; (3 ) Take the supernatant and use a 0.22μm microporous filter membrane to finely filter to obtain a fine filtrate; (4) Take the fine filtrate to recover ethanol under reduced pressure, and concentrate it to 10 g raw dried ginkgo biloba leaves / ml concentrated juice for use.
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