海南菠萝蜜果胶的提取工艺研究

Study on extracting technology of pectin from Artocarpus heterophyllus lam

以海南菠萝蜜果皮为原料,用乙醇沉淀法分别在实验室常规条件和微波条件下提取果胶,选择料液比、温度、时间、pH、微波功率为研究对象,通过正交实验得出在常规条件下,最佳提取工艺条件为:m(果皮)∶V(蒸馏水)=1∶40,pH为1,浸提温度为85℃,浸提时间为1.5h,果胶收率可达35.87%。微波法最佳工艺条件为:m(果皮)∶V(蒸馏水)=1∶30,pH为1.5,浸提温度为65℃,浸提时间为20m in,微波功率为500W,果胶收率可达24.83%。

The ethanol sedimentation was used to extract pectin from the pericarp of Artocarpus heterophyllus lam under routine laboratory conditions and microwave conditions. The effect of each factor such as the solid -liquid ratio, extracting temperature, extraction time, the solution pH and microwave power on the extraction of the pericarp of Artocarpus heterophyllus lam were investigated using the orthogonal design test. Under routine laboratory condition, the optimum extraction parameters were that the ratio of solid to liquid was 1：40, the pH of solvent was 1, heating temperature was 85℃, extracting time was 1.5h. Using the optimal extract conditions, the yield of pectin was 35.87%. While under the microwave condition, the optimal extraction conditions were that the ratio of solid to liquid was 1：30, the pH of solvent was 1.5, microwave temperature was 65℃, microwave time was 20min, microwave power 500W and the yield of pectin was 24.83%.