摘要
莴笋皮中含有丰富的膳食纤维,利用超声辅助碱法提取莴笋皮中的可溶性膳食纤维,可以充分利用莴笋商品化过程中的废弃物资源,对于环境保护、降低成本以及提高农副产品附加值和经济效益都有重要的促进作用。通过单因素试验探讨碱液浓度、超声提取时间、超声提取温度和料液比对莴笋皮中膳食纤维提取率的影响,运用Box-Behnken原理设计4因素3水平的响应面优化分析试验,研究各因素及其交互作用对莴笋皮中可溶性膳食纤维提取率的影响,得到预测的回归方程模型。分析响应面确定最佳提取工艺参数为NaOH浓度6%、超声提取时间40min、超声提取温度65℃、超声提取料液比1∶30。在此条件下试验得到的莴笋皮中可溶性膳食纤维提取率为17.63%,与理论值的相对误差为0.34%。优化得到的工艺参数可为莴笋皮可溶性膳食纤维的提取和利用提供参考。
Lettuce peel contains rich dietary fiber.Extracting soluble dietary fiber from lettuce peel by ultrasonic-assisted alkaline method can fully utilize the waste resources during the commercialization process of lettuce,which plays an important role in promoting environmental protection,reducing costs,and improving the added value and economic benefits of agricultural by-products.A single factor experiment was conducted to investigate the effects of alkali concentration,ultrasonic extraction time,ultrasonic extraction temperature,and material liquid ratio on the extraction rate of dietary fiber from lettuce peel.A response surface optimization analysis experiment with 4 factors and 3 levels was designed using Box Behnken principle to study the effects of various factors and their interactions on the extraction rate of soluble dietary fiber from lettuce peel,and a predicted regression equation model was obtained.The optimal extraction process parameters were determined by response surface analysis as NaOH concentration of 6%,ultrasonic extraction time of 40 minutes,ultrasonic extraction temperature of 65℃,and ultrasonic extraction material liquid ratio of 1∶30.Under these conditions,the extraction rate of soluble dietary fiber in lettuce peel obtained from the experiment was 17.63%,with a relative error of 0.34%compared to the theoretical value.The optimized process parameters can provide reference for the utilization of soluble dietary fiber extraction from lettuce peel.
作者
关红艳
杨梦昕
宗宝
唐昭
付晶晶
GUAN Hongyan;YANG Mengxin;ZONG Bao;TANG Zhao;FU Jingjing(College of Medical Technology,Guangxi Medical College,Nanning 530021,China)
出处
《食品安全导刊》
2023年第24期130-135,共6页
China Food Safety Magazine
基金
2023年度广西高校中青年教师科研基础能力提升项目(2023KY1421)
2019年度广西高校中青年教师科研基础能力提升项目(2019KY1534)。
关键词
莴笋皮
可溶性膳食纤维
提取
响应面法
lettuce peel
soluble dietary fiber
extraction
response surface methodology
