当前位置: 首页 > 文章 > 超声辅助提取工艺中pH对苹果果胶品质的影响 食品工业科技 2014,35 (10) 172-176
Position: Home > Articles > Effect of pH on the quality of apple pectin extracted with ultrasonic-wave assisted Science and Technology of Food Industry 2014,35 (10) 172-176

超声辅助提取工艺中pH对苹果果胶品质的影响

作  者:
窦姣;郭玉蓉;薛战锋;李洁;陈玮琦;张晓瑞
单  位:
陕西师范大学食品工程与营养科学学院
关键词:
苹果果胶;超声波;提取;pH;品质
摘  要:
为了研究pH对苹果果胶品质的影响,利用不同pH的盐酸溶液对苹果渣中的果胶进行超声辅助提取,并对果胶品质进行了评估。结果表明:超声辅助提取工艺中pH对所得果胶的品质有显著影响,在pH1.00~2.00范围内,随着pH的升高,果胶得率、多酚含量呈现先增大后减小的趋势,半乳糖醛酸含量逐渐减少,酯化度、特性粘度和粘均分子量均呈逐渐增大的趋势。红外谱图显示:不同pH条件下所得苹果果胶结构基本一致,均具有糖类物质的特征吸收峰。
译  名:
Effect of pH on the quality of apple pectin extracted with ultrasonic-wave assisted
作  者:
DOU Jiao;GUO Yu-rong;XUE Zhan-feng;LI Jie;CHEN Wei-qi;ZHANG Xiao-rui;Shaanxi Normal University,College of Food Engineering and Nutritional Science;
关键词:
apple pectin;;ultrasonic-wave;;extracted;;pH;;quality
摘  要:
In order to study the effect of pH values on the quality of apple pectin,different pH of ultrasonic-wave assisted were adopted to extract apple pectin from apple pomace so as to evaluate the quality of apple pectin. The results indicated that pH had significant influence on the quality of apple pectin. In the range of pH1.00~ 2.00,as the pH arising,the pectin yields and polyphenol first increased and then decreased,while,the content of galacturonic acid decreased. However,the degree of esterification increased,the same trend as intrinsic viscosity and viscosity average molecular weight. IR spectral analysis showed that no major structural differences of apple pectin under different pH conditions. Meanwhile,different pectins all had characteristic absorption peak of carbohydrate.

相似文章

计量
文章访问数: 13
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊