使用蔗糖和肠间叶双歧杆菌B-512FMCM的蔗糖和右旋糖核酸酶通过转糖基化修饰咖啡酸。酶促修饰后,通过丁醇分离,硅胶色谱和制备型HPLC分离出咖啡酸葡糖苷。合成的咖啡酸葡糖苷的分子质量电荷比为365 m / z,其结构被鉴定为咖啡酸-3-O-α-d-吡喃葡萄糖苷。在合成反应中使用325 mM咖啡酸,355 mM蔗糖和650 mU mL-1葡聚糖酶优化了153 mM浓度的这种咖啡酸-3-O-α-d-吡喃葡萄糖苷的生产。与咖啡酸相比,咖啡酸-3-O-α-d-吡喃葡萄糖苷的水溶性高3倍,抗脂质过氧化作用高1.66倍,对结肠癌细胞生长的抑制作用强15%,和11.5倍更高的耐褐变性。这些结果表明该咖啡酸-3-O-α-d-吡喃葡萄糖苷可能是食品和药品的合适功能成分。
A method of producing a phenol derivative glycoside is provided. The method comprises the step of allowing a saccharide and a phenol derivative to react with each other in the presence of an enzyme to produce the phenol derivative glycoside. The enzyme is selected from the group consisting of neopullulanase, cyclomaltodextrinase, maltogenic &agr;-amylase, and saccharifying amylase having cyclodextrin synthesizing capability.
Method of extracting and method of purifying an effective substance
申请人:——
公开号:US20040266999A1
公开(公告)日:2004-12-30
A method for extracting a hydrophobic group-containing water-soluble organic compound, comprising the step of bringing an aqueous solution containing the hydrophobic group-containing water-soluble organic compound and a saccharide into contact with a polar organic solvent to obtain an aqueous phase and an organic phase, whereby the hydrophobic group-containing water-soluble organic compound is transferred to the organic phase. The saccharide concentration of the aqueous solution may be at least 12 g per 100 ml of the aqueous solution. The aqueous solution may further contain a phase separation assisting agent. The phase separation assisting agent may be selected from the group consisting of sodium chloride, sodium citrate, magnesium sulfate, and ammonium sulfate.
[EN] METHOD OF EXTRACTING AND METHOD OF PURIFYING AN EFFECTIVE SUBSTANCE<br/>[FR] PROCEDES D'EXTRACTION ET DE PURIFICATION D'UNE SUBSTANCE EFFICACE
申请人:EZAKI GLICO CO
公开号:WO2003027049A1
公开(公告)日:2003-04-03
A method for extracting a hydrophobic group-containing water-soluble organic compound, comprising the step of bringing an aqueous solution containing the hydrophobic group-containing water-soluble organic compound and a saccharide into contact with a polar organic solvent to obtain an aqueous phase and an organic phase, whereby the hydrophobic group-containing water-soluble organic compound is transferred to the organic phase. The saccharide concentration of the aqueous solution may be at least 12 g per 100 ml of the aqueous solution. The aqueous solution may further contain a phase separation assisting agent. The phase separation assisting agent may be selected from the group consisting of sodium chloride, sodium citrate, magnesium sulfate, and ammonium sulfate.