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海藻糖 trehalose (实际上就是琼脂agar)

非还原性双糖Nonreducing disaccharides

bio-active compounds生物活性物质

medicine:可以单用指“医学”，不要再用其他的了！

Bio-nutrition生物制剂

脂质双分子层liposome bilayers

micro-encapsulation (sac)微囊

脂质体liposome

得率yield

薄膜法thin-film method

空白脂质体Blank liposome

超氧化物歧化酶super-oxide dismutase

脂质膜lipid membranes

mono-layer 单层

multiple-layer多层

enveloped 包封

pharmacy制药

cosmetic化妆品

球型global，round

脂质膜lipid membrane

超氧化物歧化酶( super-oxide dismutase , SOD )

Abstract

Trehalose is a kind of non-reducing disaccharides, and it has significant effect on protection of bio-active compounds. Currently, it is widely used in protection of mechine, food, and bio-nutritions. Liposome is a kind of mono-layer, several layer or multiple-layer global super-thin micro-sacs, and it composes of lipid membranes formatted by liposome bilayers，often used in pharmacy and cosmetic. The experiment studies the effects of trehalose on the yield of VC (Vitamin C) liposome，The blank liposome was prepared by the thin-film method. We enveloped the VC solution containing trehalose in the blank liposome under ultrasonic conditions. Comparison of the liposome yields under different trehalose concentrations shows that trehalose has no effect on the liposome yields. SOD（super-oxide dismutase）is used in cosmetic production and the key problem for its application is the maintenance of its activity. Long-term experiment by adding trehalose and determining its activity with NBT method for four continual weeks showed that the optimum conditions for maintaining the SOD activity were 35℃, sealed, and 5 percent of added trehalose.