Application of bletilla striata(Thunb.)Rchb.f. extract
A technology of extract and bletilla striata, applied in the field of application of bletilla striata extract
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Embodiment 1
[0025] The production of embodiment 1 bletilla striata extract (1)
[0026] (1) Take the medicinal material of Bletilla striata, dry it until the water content is lower than 5%, take 100g after crushing, add 1.5L deionized water to decoct for 0.5-1h; centrifugally filter, and collect the filtrate;
[0027] (2) Add 1.5L of deionized water to the filter residue and decoct for 0.5h again, and combine the filtrate;
[0028] (3) Freeze-drying or spray-drying after concentration.
Embodiment 2
[0029] The production of embodiment 2 bletilla striata extract (2)
[0030] (1) Take the medicinal material of Bletilla striata, dry it until the water content is less than 5%, take 100g after crushing, first soak in 0.5L 70% ethanol for 12h or decoct for 5min, and take the filter residue; or soak it in 1L of acetone for 12h, take the filter residue to remove the acetone;
[0031] (2) according to the method for embodiment 1, add deionized water and decoct twice, combine filtrate;
[0032] (3) Freeze-drying or spray-drying after concentration.
Embodiment 4
[0033] The production of embodiment 4 bletilla striata extract (4)
[0034] In step (2) of Example 1 or 2, after combining the filtrates, concentrate to 500 mL, add 1.5-2 L of ethanol, and let stand for 6-24 hours; filter to collect the precipitate and dry it.
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