Method for extracting polygonatum odoratum polysaccharide
An extraction method and polysaccharide technology are applied in the extraction field of Polysaccharide Polysaccharide, which can solve the problems of excessive amount of extraction solvent, waste, and long extraction time, and achieve the effects of shortening the crushing time, reducing the amount of polysaccharide, and shortening the extraction time.
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Embodiment 1
[0019] Embodiment 1: Guan Yuzhu crude drug powder is passed through a 60-mesh sieve, and 100 g of powder under the sieve is taken, and 1500 g of water is added, and at 20° C., KQ-100DV type numerical control ultrasonic cleaner (Kunshan Ultrasonic Instrument Co., Ltd.), ultrasonic frequency 30 kHz, Extraction time 0.5h. Extract 3 times, filter, combine the three extracts, concentrate under reduced pressure to a relative density of 1.36 at a vacuum pressure of 0.08MPa and a temperature of 25°C, put it at room temperature, add 3 times of absolute ethanol, shake well, and let it stand for 12h , filtered, separated the precipitate, washed 3 times with 0.5 times of acetone, discarded the washing solution, and freeze-dried and pulverized the precipitate at -50°C according to the conventional method to obtain 19.96 g of white powder. The polysaccharide yield was determined to be 8.79%.
Embodiment 2
[0020] Example 2: Polygonatum officinalis crude drug powder was passed through a 60-mesh sieve, 100 g of the under-sieved powder was taken, 3000 g of water was added, the extraction temperature was 50° C., the ultrasonic frequency was 80 kHz, and the extraction time was 2 h. Extract twice, filter, combine the extracts, concentrate under reduced pressure to a relative density of 1.18, put it at room temperature, add 4 times of absolute ethanol, shake well, let it stand for 24 hours, filter, separate the precipitate, and wash with 1.5 times of acetone 2 times, the washing liquid was discarded, and the precipitate was freeze-dried and pulverized at -50°C according to the conventional method to obtain 20.32 g of white powder. The polysaccharide yield was determined to be 8.97%.
Embodiment 3
[0021] Example 3: Polygonatum officinalis crude drug powder was passed through a 60-mesh sieve, 100 g of the under-sieved powder was taken, 4000 g of water was added, the extraction temperature was 80° C., the ultrasonic frequency was 100 kHz, and the extraction time was 2 hours. Extract once, filter, concentrate the extract under reduced pressure to a relative density of 1.29, put it at room temperature, add 3 times of absolute ethanol, shake well, let it stand for 36 hours, filter, separate the precipitate, and wash with 3 times of acetone for 1 The second time, the washing solution was discarded, and the precipitate was freeze-dried and pulverized at -50°C according to a conventional method to obtain 22.15 g of white powder. The yield of polysaccharide was determined to be 9.36%.
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