目的 采用正交試驗(yàn)優(yōu)化活性炭對(duì)白芷多糖提取液脫色的工藝條件。方法 考察脫色溫度、活性炭添加量和脫色時(shí)間對(duì)白芷多糖脫色效果的影響。在單因素試驗(yàn)的基礎(chǔ)上，以多糖脫色率和多糖剩余率為指標(biāo)，采用L9(34)正交試驗(yàn)確定了最優(yōu)工藝的參數(shù)。結(jié)果 活性炭添加量對(duì)脫色效果的影響最大，其次為溫度，再次為時(shí)間。最佳脫色條件為脫色溫度60 ℃，活性碳添加量2%，吸附時(shí)間30 min，在此條件下，脫色率為96.20%，多糖剩余率為82.36%。結(jié)論 活性炭對(duì)白芷多糖脫色工藝簡(jiǎn)便可行。

Objective To optimize the decoloration technology for active carbon on polysaccharides from Angelicae Dahuricae Radix by orthogonal test. Methods Effects of decoloration temperature, amounts of active carbon, and decoloration time on polysaccharides from Angelicae Dahuricae Radix were investigated. Based on the single factor test method, L9(34) orthogonal test method was performed to optimize the technological paramters with decoloration ratio and the remaining rate of polysaccharide as indexes. Results The sequence of the effects on the decoloration was amount of active carbon, temperature, and time. The optimized decoloration conditions were decolorating temperature 60 ℃, the amount of active carbon 2%, and decolorating time 30 min. Under this condition the decoloration rate was 96.20% and the remaining rate of polysaccharide was 82.36%. Conclusion The process of the decoloration technology for active carbon on polysaccharides from Angelicae Dahuricae Radix is reasonable and feasible.