[Objectives]To optimize the processing technology for roasted licorice with water.[Methods]Through the orthogonal experimental design,taking the water added,moistening time,frying temperature and frying time as the fa...[Objectives]To optimize the processing technology for roasted licorice with water.[Methods]Through the orthogonal experimental design,taking the water added,moistening time,frying temperature and frying time as the factors,and the content of glycyrrhizin and glycyrrhizic acid as the evaluation index,the processing technology for roasted licorice with water was optimized.[Results]The best processing technology of licorice was as follows:Pure licorice slices were mixed with water and moistened for 3 h,and then fried at 160℃for 6 min.20 kg of water was added to every 100 kg of licorice.[Conclusions]The best processing technology for roasted licorice with water was established,laying a foundation for the research and application of roasted licorice with water and its preparation.展开更多
受体激动剂类药物在畜牧业中仍存在非法使用的风险,对消费者健康造成潜在威胁。本文采用液相色谱-质谱联用技术(Liquid Chromatography-Tandem Mass Spectrometry,LC-MS/MS)建立了一种检测猪肉中β-受体激动剂类药物残留的方法。样品经...受体激动剂类药物在畜牧业中仍存在非法使用的风险,对消费者健康造成潜在威胁。本文采用液相色谱-质谱联用技术(Liquid Chromatography-Tandem Mass Spectrometry,LC-MS/MS)建立了一种检测猪肉中β-受体激动剂类药物残留的方法。样品经酶解、净化、浓缩后,采用LC-MS/MS在多反应监测(Multiple Reaction Monitoring,MRM)模式下进行定性定量分析。优化后的前处理条件为甲醇-水(70∶30,v/v)作为提取溶剂,37℃β-葡萄糖醛酸苷酶水浴酶解12 h,固相萃取净化。优化后的仪器条件为采用C18色谱柱,0.1%甲酸水溶液和乙腈为流动相,梯度洗脱。4种β-受体激动剂在给定浓度范围内与响应值呈良好的线性关系,相关系数均大于0.99;日内和日间相对标准偏差均小于10%,回收率为87.9%~92.5%,基质效应值在90.4%~109.7%。该方法满足肉制品中β-受体激动剂类药物残留检测的要求。展开更多
文摘[Objectives]To optimize the processing technology for roasted licorice with water.[Methods]Through the orthogonal experimental design,taking the water added,moistening time,frying temperature and frying time as the factors,and the content of glycyrrhizin and glycyrrhizic acid as the evaluation index,the processing technology for roasted licorice with water was optimized.[Results]The best processing technology of licorice was as follows:Pure licorice slices were mixed with water and moistened for 3 h,and then fried at 160℃for 6 min.20 kg of water was added to every 100 kg of licorice.[Conclusions]The best processing technology for roasted licorice with water was established,laying a foundation for the research and application of roasted licorice with water and its preparation.