A kind of sulfur-containing amino acid modified plant fruit polysaccharide and its preparation method and application
A technology of sulfur amino acid and amino acid, which is applied in the field of sulfur-containing amino acid modified plant fruit polysaccharides and its preparation, can solve the problems of inability to form a stable structure, polysaccharide solubility, heat stability and whitening effect can not be significantly improved, and achieve Effects of increased dosage, mild conditions, and ease of industrialization
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Embodiment 1
[0029] A sulfur-containing amino acid modified plant fruit polysaccharide, comprising 20 parts by weight of wolfberry polysaccharide, 20 parts by weight of jujube polysaccharide, 20 parts by weight of apricot polysaccharide, 1 part by weight of cysteine, 1 part by weight of cystine and 1 part by weight of methionine Parts, polysaccharide derivatives prepared by carbonyl ammonia reaction.
[0030] Its preparation includes the following steps:
[0031] (1) Add petroleum ether 10 times its mass to wolfberry, red dates or apricots, heat and reflux at 60°C for 8 hours; filter, add water to the filter residue according to 15 times its mass, extract 3 times at 90°C, 1 hour each time, filter, and combine the filtrates , 2MPa, 60°C reverse osmosis membrane concentrated to 20% solid matter concentration, add 4 times of 95% ethanol according to the volume ratio, stand at 4°C for 8h, filter, lyophilize the filter residue after volatilizing ethanol, and obtain Lycium barbarum , jujube or ...
Embodiment 2
[0035] A sulfur-containing amino acid modified plant fruit polysaccharide, comprising 30 parts by weight of wolfberry polysaccharide, 30 parts by weight of jujube polysaccharide, 30 parts by weight of apricot polysaccharide, 5 parts by weight of cysteine, 5 parts by weight of cystine, and 5 parts by weight of methionine Parts, polysaccharide derivatives prepared by carbonyl ammonia reaction.
[0036] Its preparation includes the following steps:
[0037] (1) add n-hexane 30 times its mass to wolfberry, red dates or apricots, heat and reflux at 90°C for 3 hours; The filtrates were combined, 3MPa, 40°C reverse osmosis membrane concentrated to 30% solid matter concentration, added 6 times 85% ethanol by volume ratio, stood at 4°C for 16h, filtered, lyophilized the filter residue after volatilizing ethanol, respectively Get wolfberry, red dates or apricot polysaccharides.
[0038] (2) Lycium barbarum polysaccharide, jujube polysaccharide and apricot polysaccharide are mixed in p...
Embodiment 3
[0041] A sulfur-containing amino acid modified plant fruit polysaccharide, comprising 30 parts by weight of wolfberry polysaccharide, 20 parts by weight of jujube polysaccharide, 20 parts by weight of apricot polysaccharide, 5 parts by weight of cysteine, 3 parts by weight of cystine, and 3 parts by weight of methionine Parts, polysaccharide derivatives prepared by carbonyl ammonia reaction.
[0042] Its preparation includes the following steps:
[0043] (1) Add petroleum ether 20 times its mass to wolfberry, red dates or apricots, heat and reflux at 80°C for 5 hours; filter, add water to the filter residue according to 20 times its mass, extract twice at 90°C, 1 hour each time, filter, and combine the filtrates , 2.5MPa, 50°C reverse osmosis membrane concentrated to 25% solid matter concentration, add 5 times of 80% ethanol by volume ratio, let stand at 4°C for 12h, filter, lyophilize the filter residue after volatilizing ethanol to obtain Lycium barbarum, jujube or apricot ...
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