机构地区: 广东海洋大学食品科技学院
出 处: 《食品科技》 2011年第11期201-204,共4页
摘 要: 分别采用热回流提取法、纤维素酶提取法和超声波提取法进行提取,确定了不同提取方法的最佳提取条件(即乙醇热回流提取:乙醇浓度为80%、温度80℃、料液比为1:50;纤维素酶-乙醇提取:乙醇浓度70%、温度70℃、pH5.0、料液比为1:50;超声波提取:乙醇浓度60%、超声萃取温度70℃、浸提时间30 min、料液比为1:50及超声强度350 W)。并对上述3种方法进行比较,确定了菠萝皮类黄酮提取的最佳工艺为超声波提取最佳工艺条件。在此条件下,每克菠萝皮中类黄酮含量为21.3 mg,则类黄酮浸提率高达87.08%。 Pineapple peels was extracted by heating, ultrasound-assisted and enzyme-assisted extractions, respectively. It could be determined that the optimal extracting conditions of three different extraction methods on favonoids extraction(heating extraction: ethanol concentration 80%, temperature 80 ℃, solid- liquid ratio 1:50, enzyme-assisted extraction: ethanol concentration 70%, temperature 70 %, pH5.0, solidliquid ratio 1:50, ultrasound-assisted extraction: ethanol concentration 60%, ultrasonic temperature 70 ℃, time 30 min, solid-liquid ratio 1:50 and ultrasonic power 350 W). At last, comparison of three methods of extraction showed that the optimal extracting conditions of ultrasound-assisted extraction was the best of the three. At these conditions, the flavonoids content of pineapple peels is 21.3 mg/g, the extracting rate was 87.08%.