Glucosamine chlorogenate as well as preparation method and application thereof
A technology of glucosamine hydrochloride and glucosamine, which is applied in the field of daily chemicals, can solve problems such as unresearched organic salts of glucosamine, and achieve the effects of easy availability of equipment and raw materials, strong antioxidant activity and low cost
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Embodiment 1
[0025] 1) Preparation of glucosamine solution: Weigh 6g of 50% sodium methoxide and add it into 60mL of anhydrous methanol to dissolve. Weigh 12g of glucosamine hydrochloride and add to the above system. Stir at room temperature for 5 min, and then centrifuge at 3000 r / min for 10 min. Remove the supernatant from the centrifuge tube for use;
[0026] 2) Preparation of glucosamine chlorogenic acid salt: add 19.7 g of chlorogenic acid in batches to the glucosamine solution, react at 0°C for 1 h, add 100 mL of acetone to precipitate, then stir at room temperature for 0.5 h, pump After filtration, the resulting solid was repeatedly washed with acetone and freeze-dried to obtain the glucosamine chlorogenic acid salt.
Embodiment 2
[0028] The difference from Example 1 is:
[0029] 1) Preparation of glucosamine solution: Weigh 4.8g of 50% sodium methoxide and add it into 60mL of anhydrous methanol to dissolve. Weigh 12g of glucosamine hydrochloride and add to the above system. Stir at room temperature for 10 min, and then centrifuge at 2800 r / min for 10 min. Remove the supernatant from the centrifuge tube for use;
[0030] 2) Preparation of glucosamine chlorogenic acid salt: add 19.7 g of chlorogenic acid in batches to the glucosamine solution, react at 0°C for 2 h, add 100 mL of acetone to precipitate, stir at room temperature for 1 h, and filter with suction , the obtained solid is repeatedly washed with acetone and freeze-dried to obtain the glucosamine chlorogenic acid salt.
Embodiment 3
[0032] The difference from Example 1 is:
[0033] 1) Preparation of glucosamine solution: Weigh 6g of 50% sodium methoxide and add it into 70mL of anhydrous methanol to dissolve. Weigh 12g of glucosamine hydrochloride and add to the above system. Stir at room temperature for 10 min, then centrifuge at 3000 r / min for 10 min. Remove the supernatant from the centrifuge tube for use;
[0034] 2) Preparation of glucosamine chlorogenic acid salt: add 39.5 g of chlorogenic acid in batches to the glucosamine solution, react at 0°C for 2 hours, add 100 mL of acetone to precipitate, stir at room temperature for 1 hour, and filter with suction , the obtained solid is repeatedly washed with acetone and freeze-dried to obtain the glucosamine chlorogenic acid salt.
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