银耳多糖提取优化及得率与质构相关性

Tremella Polysaccharides Extraction Optimization and Correlation between Yield and Texture

摘要: 以银耳为原料，采用热水提取法提取银耳多糖。通过正交试验优选了银耳多糖的热水提取法工艺参数，并对银耳子实体硬度和提取液黏度与多糖得率的关系进行了分析。结果表明，银耳多糖的热水提取最佳工艺参数为液料比60∶1（v/w），提取温度90 ℃，提取时间4 h。同时通过Pearson相关性分析可得，热水提取的银耳多糖含量与溶液黏度呈显著的正相关性，而多糖含量与银耳子实体硬度无显著线性相关。

Abstract: With white fungus as raw materials，tremella polysaccharide was extracted by use of hot water extraction method.Hot water extraction process parameters of tremella polysaccharide were optimized through orthogonal test.Relationship between polysaccharide yield and tremella fruiting body hardness or extract viscosity was analyzed.The optimal extraction conditions were found to be an extraction duration of 4 h at 90 ℃ with a water/material ratio of 60∶1（v/w）.Through Pearson correlation analysis，content of tremella polysaccharides had positive correlation to the extract viscosity，but it had not significant correlation to tremella fruiting body hardness.