有机酸-湿热复合处理土豆抗性淀粉的益生特性  

Probiotic properties of potato resistant starches modified by a combination of organic acid and heat-moisture treatments

作　　者：刘旸[1] 李晓文[1] 祝红[1] 谢涛[2] 易翠平[1] LIU Yang;LI Xiao-wen;ZHU Hong;XIE Tao;YI Cui-ping(College of Chemistry and Biology Science, Changsha University of Science ＆ Technology , Changsha , Hunan 410015, China;College of Chemical Engineering, Hunan Institute of Engineering, Xiangtan , Hunan 411104, China)

机构地区：[1]长沙理工大学化学与生物工程学院,湖南长沙410015 [2]湖南工程学院化学化工学院,湖南湘潭411104

出　　处：《食品与机械》2017年第9期30-34,共5页Food and Machinery

基　　金：长沙市科技计划项目(编号:Kq1602040)

摘　　要：采取有机酸-湿热复合处理制备了土豆抗性淀粉(AH-HMT RS3),重点研究了有机酸种类及浓度、淀粉乳浓度对土豆AH-HMT RS3中慢速消化淀粉(SDS)、抗性淀粉(RS)的形成及其益生作用的影响。结果表明:无酸湿热处理土豆淀粉时,淀粉乳浓度对SDS、RS的形成几乎无影响;与无酸湿热复合处理相比,无论淀粉乳浓度高低,4种有机酸-湿热复合处理所得土豆AH-HMT RS3中RS含量增高了21.89%~45.09%,且高浓度酸比低浓度酸更能促进RS的生成,促进RS水平增高程度从大到小依次为柠檬酸、乙酸、琥珀酸和乳酸。随着土豆AH-HMT RS3中RS含量增加,其对双歧杆菌、乳酸杆菌的增殖作用更大,更能促进短链脂肪酸(SCFAs)特别是丁酸的大量产生。因此,土豆AHHMT RS3具有开发成为新益生素的潜力。Some potato resistant starches（AH-HMT RS3）were made by using acid hydrolysis combined with heat-moisture treatment（AH-HMT）,and the effects of different types and concentration of organic acids and the starch slurry concentration on the formation of slowly digestive starch（SDS）and resistant starch（RS）in potato RS3 were investigated.The results demonstrated that the starch slurry concentrations had no effect on the formation of SDS and RS when the potato starches were modified by no acid combined with heat-moisture treatment（HMT）.Compared with no acidHMT,the RS contents in potato AH-HMT RS3 made by AH-HMT increased 21.89%~45.09%,non-influenced by the starch slurry concentration.As to the improvement of RS formation,high acid concentration was better that the lower one.The increased levels of RS from high to low were ordered as citric acid,acetic acid,succinic acid and latic acid.With the increase of RS content,the potato AH-HMT RS3 had stronger effect on the proliferations of bifidobacteria and lactobacilli and could promote more short chain fatty acids（SCFAs）,especially butyric acid formation.Therefore,potato AH-HMT RS3 had the developmental potential of a new probotic.

关 键 词：土豆 抗性淀粉 有机酸-湿热复合处理 益生特性 

分 类 号：TS231[轻工技术与工程—粮食、油脂及植物蛋白工程]