摘要
采用稀碱预处理+二次碱煮法对罗布麻进行脱胶,对脱胶所得精干麻的残胶率、分裂度和黄酮含量进行测试,考察不同碱浓度、碱煮时间和温度对脱胶效果的影响.结果表明:随着碱浓度、碱煮时间和温度的升高,精干麻的残胶率和黄酮含量逐渐降低;经稀碱预处理后,二次碱煮脱胶最佳工艺条件为NaOH质量浓度20 g/L,处理时间1.5 h,温度70℃;与传统二次碱煮法相比,稀碱预处理+二次碱煮法对罗布麻的脱胶效果更好.
Apocynum is degummed by the method that double alkaline heating combining with alkaline pretreatment,and the indexes that residual gum,split level and flavonoid are tested.The effects of different concentrations of alkali,cooking time and temperature on the degumming are investigated.The results show that： with the increasing of alkali concentration,alkaline cooking time and temperature,the residual gum and flavonoid content decrease gradually;the optimum conditions of double alkaline heating following alkaline pretreatment is that NaOH concentration 20 g/L,the processing time 1.5 h,temperature 70 ℃;compared with the traditional method of double alkaline cooking,it is found that Apocynum venetum can be degummed better with the method of double alkaline heating combining with alkaline pretreatment.
出处
《天津工业大学学报》
CAS
北大核心
2011年第2期50-53,共4页
Journal of Tiangong University
基金
天津市应用基础及前沿技术研究计划项目(09JCZDJC26400)
关键词
罗布麻
碱预处理
脱胶工艺
最优工艺
Apocynum venetum
alkali pretreatment
degumming method
optimized condition
