Use of dimer hydrolysable tannins derivative in preparing medicament and diet additive for treating obesity
A technology for hydrolyzing tannins and dimers, which is applied in the fields of food and medicine
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Embodiment 1
[0015] Example 1: Preparation of compounds Gemin A, B, C and G: Take 100 grams of dried medicinal materials of Myrica japonica, add 500 milliliters of methanol to extract at room temperature for 48 hours, extract 3 times, filter and combine the extracts, concentrate and dry at 40 degrees Celsius to obtain the extraction The product was 9.0 g, and the yield was 9%. Dissolve the extract in 100 ml of hot water at 50 degrees Celsius, heat and electric stir for 2 hours, cool to room temperature, then centrifuge or filter, and the supernatant or filtrate passes through a D101 macroporous adsorption resin column (Φ2.5×15cm), first Elute with 3 reserved volumes of water to remove water-soluble impurities such as inorganic salts, sugars, and proteins, and then elute with a gradient of 10%, 30%, 50%, 70%, 90%, and 100% ethanol-water mixed solution in volume ratio , each ratio eluted with 3 retention volumes. The 10% ethanol-water eluted part is separated by HW-40 chromatography (Φ2.5×5...
Embodiment 2
[0032] Example 2: Preparation of the compound agrimoniin: take 100 grams of dried medicinal material of Agrimonia pilosa, add 500 milliliters of methanol to extract at room temperature for 48 hours, extract 3 times, filter and combine the extracts, concentrate and dry at 40 degrees Celsius to obtain 8.5 grams of extracts , yield 8.5%. Dissolve the extract in 100 ml of hot water at 50 degrees Celsius, heat and electric stir for 2 hours, cool to room temperature, then centrifuge or filter, and the supernatant or filtrate passes through a D101 macroporous adsorption resin column (Φ2.5×15cm), first Elute with 3 reserved volumes of water to remove water-soluble impurities such as inorganic salts, sugars, and proteins, and then elute with a gradient of 10%, 30%, 50%, 70%, 90%, and 100% ethanol-water mixed solution in volume ratio , each ratio eluted with 3 retention volumes. The 10% ethanol-water eluted part is separated by HW-40 chromatography (Φ3×50cm), and the volume ratio is 10...
Embodiment 3
[0034] Example 3: Preparation of the compound coriariin: take 100 grams of dried medicinal material Coriaria japonica, add 500 milliliters of methanol to extract at room temperature for 48 hours, extract 3 times, filter and combine the extracts, concentrate and dry at 40 degrees Celsius to obtain 10.6 grams of extracts, Yield 10.6%. Dissolve the extract in 100 ml of hot water at 50 degrees Celsius, heat and electric stir for 2 hours, cool to room temperature, then centrifuge or filter, and the supernatant or filtrate passes through a D101 macroporous adsorption resin column (Φ2.5×15cm), first Elute with 3 reserved volumes of water to remove water-soluble impurities such as inorganic salts, sugars, and proteins, and then elute with a gradient of 10%, 30%, 50%, 70%, 90%, and 100% ethanol-water mixed solution in volume ratio , each ratio eluted with 3 retention volumes. The 10% ethanol-water eluted part is separated by HW-40 chromatographic separation (Φ2.0×40cm), and the volume...
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