摘要
为提高杉木资源利用效率,探索非木质利用途径,采用索氏提取法提取杉木球果种鳞多酚,考察提取时间、提取温度、乙醇浓度和液料比等因素对球果种鳞多酚提取量的影响,根据响应面Box-Benhnken原理,构建预测模型,对提取工艺进行优化。结果表明:预测理论最佳工艺条件为:提取时间2.43 h,提取温度50.84℃,乙醇浓度64.37%,液料比33.78∶1;多酚提取量为35.86±1.45 mg·g^(-1)。改良工艺条件为:提取时间2 h,提取温度50℃,乙醇浓度60%,液料比35∶1,在此条件下多酚提取量为34.30±1.20 mg·g^(-1),可以满足工业化生产的需求。
In order to improve the utilization efficiency of Chinese fir,we explore the way of non-wood utilization.The method of Soxhlet extraction method was used to extract polyphenols from Chinese fir bracts.The effects of extraction time,extraction temperature,ethanol concentration and solid-liquid ratio on polyphenols experiment were investigated.According to the principle of response surface Box-Benhnken method,the prediction model was constructed and the extraction process is optimized.The results showed that the optimum conditions were extraction time,2.43 h,extraction temperature,50.84℃,concentration of ethanol,64.37%,and solid-liquid ratio,33.78:1.the average yield of polyphenol was 35.86±1.45 mg·g-1.The improved process conditions were as follows:extraction time 2 h,extraction temperature 50 degrees,ethanol concentration 60%,liquid to material ratio 35:1,under this condition,the average yield of polyphenol was 34.30±1.20 mg·g-1,which could meet the needs of industrial production.
作者
李佳
张健
张家君
吕蒙蒙
林思祖
陈宇
LI Jia;ZHANG Jian;ZHANG Jiajun;LYU Mengmeng;LIN Sizu;CHEN Yu(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou Fujian 350002,China;State Forestry Administration Engineering Research Center of Chinese Fir,Fuzhou Fujian 350002,China)
出处
《武夷学院学报》
2017年第12期72-77,共6页
Journal of Wuyi University
基金
国家林业局杉木工程技术研究中心平台建设(ptjh130002)
福建农林大学校重点项目建设专项:人工林培育学科建设(6112c0310)
林学学科建设(6112c0300)项目资助
关键词
杉木
种鳞
索氏提取法
多酚
响应面
Chinese fir
bracts
Soxhlet extraction
polyphenols
response surface
