The optimum precipitation conditions of Jujube date polysaccharide were obtained as follows: The extracting liquid was concentrated 4 times, adding 4 times volume ethanol and making the final concentration of alcohol 80%.

• 摘要本文研究了红枣多糖的沉淀条件，并对所提取的红枣多糖粗品的抗氧化作用进行了探讨。