白茶茶多糖：降血糖的活性成分研究
White Tea Polysaccharides: Research on Blood Sugar Lowering Compounds
白茶多糖（Tea Polysaccharides, TPS）是近年来健康研究的热点成分。白茶因低温加工工艺，多糖保留率高于其他茶类。研究数据：白茶多糖含量约2-5%干重，以杂多糖为主，包含葡萄糖、半乳糖、阿拉伯糖等。药理研究显示：1）降血糖——白茶多糖可抑制α-葡萄糖苷酶活性，减缓碳水化合物的消化吸收；2）降血脂——与胆固醇结合促进排出；3）免疫调节——激活巨噬细胞和NK细胞。老白茶的'药用价值'与陈化过程中多糖的降解和转化密切相关。
White tea polysaccharides (TPS) are a hot topic in health research. White tea's low-temperature processing preserves more polysaccharides than other teas. Data: TPS content ~2-5% dry weight, mainly heteropolysaccharides containing glucose, galactose, and arabinose. Pharmacological studies show: 1) Blood sugar — TPS inhibits α-glucosidase activity, slowing carbohydrate digestion and absorption; 2) Blood lipids — binds cholesterol for excretion; 3) Immune regulation — activates macrophages and NK cells. Aged white tea's 'medicinal value' closely relates to polysaccharide degradation and transformation during aging.
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