【摘要】 建立一种气-液微萃取技术(GLME),在食品香精香料中特定物质(乙基麦芽酚、香叶醇、八角茴香油、丁香酚、香豆素)捕集方面的应用,确定了提取温度、提取时间、冷凝温度、气体流速4个因素对食品香精香料特定物质回收率的影响。结果表明:提取温度268℃、提取时间7 min、冷凝温度-2℃和气体流速2.5 mL/min时,经验证,乙基麦芽酚回收率为78.901%,香叶醇回收率为97.903%,八角茴香油回收率为79.899%,丁香酚回收率为99.904%,香豆素回收率为96.736%,各响应值的结果均体现了较高的得率。更多还原

【Abstract】 A method for detecting the specific substances(ethyl maltol, geraniol, star anise oil, eugenol, coumarin) in flavors and fragrances of food by GLME is established, and the effects of four factors such as extraction temperature, extraction time, condensation temperature, gas flow rate on the recovery rates of specific substances in flavors and fragrances of food are determined. The results show that when extraction temperature is 268 ℃, extraction time is 7 min, condensation temperature is-2 ℃ and gas flow rate is 2.5 mL/min, the recovery rate of ethyl maltol, geraniol, star anise oil, eugenol, coumarin is 78.901%, 97.903%, 79.899%, 99.904%, 96.736% respectively, and each response value shows higher yield.更多还原