摘要
浸提色素后的桔皮滤渣,通过微波协同酒石酸浸提、乙醇沉析得到果胶。以精制果胶浸提率为评价指标,单因素实验得工艺条件为:浸提剂酒石酸pH=2.0,液料比10mL.g-1,浸提微波功率280W,辐射时间5min,浸提级数3级,浓缩比41,乙醇浓度60%,沉析时间60min。按优选的工艺条件实验3次,果胶平均浸提率达21.77%。通过红外光谱表征及质量检测表明产品合格。酒石酸浸提果胶产品品质好,浸提率高;微波法快速、节能、浸提率更高。
Pectin has been prepared from the orange peel residues after the extraction of pigment,through the Microwave-assisted extraction of tartaric acid and precipitation of ethanol.The extraction rate of the refined pectin was chosen as the evaluation index.The process conditions determined by the Single-factor experiment was as followed：pH=2.0 for the tartaric acid as extractive solvent,the ratio of solvent to material 10 mL/g,microwave power 280W,radiation time 5min,extractive times 3,enriched ratio 4：1,ethanol concentration 60%,depositional time 60min.According to the optimum conditions,3 experiments were operated and the average extractive percentage reached 21.77%.The results of infra-red spectrometry and quality detection indicated that products were qualified.Tartaric acid as solvent to extract pectin has good quality and high yield;Microwave assisted extraction shows advantages of fast,energy-saving and higher yield.
出处
《南昌大学学报（理科版）》
CAS
北大核心
2011年第6期550-554,共5页
Journal of Nanchang University(Natural Science)
基金
江西省自然科学基金资助项目(0620060)
关键词
桔皮
综合利用
果胶
微波提取
tangerine peel
comprehensive utilization
pectin
microwave extraction
