压差瞬时爆破辅助提取甜菜果胶工艺优化及理化性质分析  

Optimization of Extraction Process and Properties of Sugar Beet Pectin by Steam Explosion

作　　者：李玮 周勇杰 陈文学[1] 陈卫军[1] 钟秋平[1] 张明[1] 陈海明[1] LI Wei;ZHOU Yongjie;CHEN Wenxue;CHEN Weijun;ZHONG Qiuping;ZHANG Ming;CHEN Haiming(School of Food Science and Engineering,Hainan University,Haikou 570100,China)

机构地区：[1]海南大学食品科学与工程学院,海南海口570100

出　　处：《食品科技》2021年第10期162-168,共7页Food Science and Technology

基　　金：国家自然科学基金项目(31801494);海南省重点研发计划项目(ZDYF2020107)。

摘　　要：以甜菜粕为原料,采用响应面法研究蒸汽爆破条件对甜菜果胶提取率的影响以及工艺优化,同时利用傅立叶变换红外光谱、核磁共振氢谱及扫描电镜测定了甜菜果胶的理化、功能特性。结果表明:最佳工艺条件为Na_(2)CO_(3)质量分数4%、蒸汽爆破压力0.4 MPa、维压时间120 s,此条件下果胶提取率达11.10%,蛋白质含量(1.32±0.24)%,乳化活力(52.00±2.47)%,乳化稳定性(60.00±1.91)%,酯化度(57.78±1.01)%,总酚含量(17.74±2.12)mg GAE/g果胶,可见瞬时压差爆破辅助预处理技术可高效提取甜菜果胶且得到的果胶具有良好的结构及理化性质,适合作为乳化剂,应用前景较好,为果胶生产提供了理论及实践依据。Taking sugar beet as research object,the effects of steam explosion conditions on the extraction yield of beet pectin and the process optimization were studied by response surface methodology.Meanwhile,the physicochemical and functional properties of beet pectin were determined by Fourier transform infrared spectroscopy,hydrogen nuclear magnetic resonance spectroscopy and scanning electron microscopy.The results showed that:The optimal conditions were as follows,the mass fraction of Na_(2)CO_(3)was 4%,the steam burst pressure was 0.4 MPa,and the maintenance time was 120 s.Under this condition,the extraction yield of pectin reached 11.10%,the protein content was(1.32±0.24)%,the emulsifying activity was(52.00±2.47)%,and the emulsifying stability was(60.00±1.91)%.The esterification degree is(57.78±1.01)%,and the total phenol content is(17.74±2.12)mg GAE/g pectin.It can be seen that the steam explosion assisted pretreatment can efficiently extract beet pectin,and the obtained pectin has good structure and physical and chemical properties,which is suitable for being used as emulsifier and has a good application prospect,which provides theoretical and practical basis for pectin production.

关 键 词：甜菜果胶 瞬时压差爆破 性质分析 

分 类 号：R284.2[医药卫生—中药学]