摘要:
对‘北陆爷‘蓝丰爷‘爱国者爷‘杜克爷4 个品种的蓝莓果中多糖和单糖的构成进行系统研究。采用乙醇水溶液 提取蓝莓鲜果中的游离单糖,纯水提取渣子中的蓝莓多糖,利用分光光度法与气相色谱柱前衍生化法相结合研究 上述4 个品种蓝莓果中多糖及单糖构成。结果表明:4 个品种蓝莓果中游离单糖总量(以鲜果计)为24.18 ~33.18 mg/ g,其中‘蓝丰爷果中游离单糖总量最高,且4 个品种蓝莓果中游离单糖均以果糖、葡萄糖、半乳糖为主,果糖的含 量占所有游离单糖总量的93%以上;4 个品种蓝莓果中多糖总量为3.54 ~5.87 mg/ g(以鲜果计),‘爱国者爷蓝莓果 中多糖总量最高。研究结果还显示,4 个品种的蓝莓多糖均由赤藓糖、阿拉伯糖、鼠李糖、岩藻糖、木糖、果糖、半乳 糖、葡萄糖8 种单糖构成,含量较高的单糖为果糖、葡萄糖、半乳糖。
Abstract:
This paper systematically studies the composition of polysaccharides and monosaccharides in four species of blueberries (fresh fruit), i. e. Northland, Bluecrop, Patriot and Duke. The monosaccharides were extracted by ethanol solution and polysaccharides via purified water. Spectrophotometry and GC pre- column derivatization were used to study the composition of polysaccharides and monosaccharides on the above four species of blueberries (fresh fruit). The results indicated that the total amount of free monosaccharides were between 24.18 and 33.18 mg/ g, while Bluecrop had the highest amount of free monosaccharides. The predominant three free monosaccharides were fructose, glucose and galactose. And the content of fructose accounted for 93% among all free monosaccharides. As with polysaccharides, the total amount of them were between 3.54 and 5.87 mg/ g (fresh fruit), while the patriot had the highest amount. Also the study showed that polysaccharides from four different species of blueberries were all contain erythrose, arabinose, rhamnose, fucose, xylose, fructose, galactose and glucose, and the predominant three were fructose, glucose and galactose.
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