低强度超声间歇浸取栀子黄色素  

Batch extraction of crocin from Garderia by low intensity and dual-frequency ultrasound

作　　者：曹雁平[1] 赵婉婷[1] 程伟[1] 

机构地区：[1]北京工商大学化学与环境工程学院,北京100048

出　　处：《食品工业科技》2009年第1期272-274,279,共4页Science and Technology of Food Industry

基　　金：北京市自然科学基金项目(3062007);十一五科技支撑项目(2006BAD27B03)

摘　　要：研究了时间、温度、功率、频率等因素在单频、双频复合和双频交变超声浸取时对栀子黄色素质量浓度的影响,并用包括温度、时间、功率、乙醇浓度、粒度、固液比和超声频率(28、40、50、135kHz)等影响因子的混合水平均匀设计实验优化双频组合超声浸取工艺,用标准化回归系数评价了温度、功率、频率等关键因素对目标参数的影响程度,获得的最佳超声条件为:固液比1∶5,40目,乙醇浓度20%,31℃,28/40kHz双频交变,0.2/0.2W/cm2,浸取35min,浸取浓度26.80mg·mL-1,与预测值的偏差为7.87%,数学模型的有效性较高。The crocin from Garderia was extracted by ultrasound-assisted extraction technology.The experiments were carried out according single factor （extraction temperature, extraction time, ultrasonic intensity, ultrasonic frequency） in single- frequency ultrasonic extraction, dual- frequency- complex ultrasonic extraction （DFC） and dual-frequency-alternant ultrasonic extraction（DFA）, and uniform design（added mass ratio of solid and liquid, granularity,ethanol concentration）by DPS for dual-frequency-complex ultrasonic extraction（ including DFC and DFA） ,for maximum extraction of the pigment from Garderia was obtained,through Partial Least Squares（PLS）. The optimum extraction conditions were as follows, granularity,40mesh; mass ratio of solid and liquid 1：5, ethanol concentration 20%, extraction temperature 31℃, ultrasonic frequency, 28/40kHz DFA, ultrasonic intensity 0.2/0.2W/cm^2, concentration 26.80mg.mL^-1, error was 7.87%, which was well matched with the predicted content.

关 键 词：栀子黄色素 超声 间歇浸取 频率组合 均匀设计 

分 类 号：TS201.2[轻工技术与工程—食品科学]