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《豆渣中水溶性大豆多糖的性质及应用研究-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、河南农业科学,2014,43(6):157—160JournalofHenanAgriculturalSciences豆渣中水溶性大豆多糖的性质及应用研究汪洪涛,陈成,石雪萍,李小华(江苏经贸职业技术学院食品系/江苏省食品安全工程技术研究开发中心,江苏南京211168)摘要:对先用碱预处理豆渣再用酸法提取出的豆渣水溶性大豆多糖(SSPS)的抗氧化性、抑茵性和对酸性乳饮料的稳定性进行了研究。结果表明:SSPS对DPPH自由基的清除率随其质量浓度的增大而增大,SSPS质量浓度为0.2g/L时,清除率为42;SSPS对大肠杆菌、金黄色葡萄球
2、菌、沙门氏茵和蜡样芽苞杆菌均有一定的抑制作用,且随SSPS质量浓度的增加,其抑茵效果增强;SSPS对酸性乳饮料有一定的稳定作用,当SSPS添加量为6g/L时,酸性乳饮料的离心沉淀率小于3%,悬浮稳定性接近0.5,其稳定效果与果胶接近;SSPS作稳定剂时,酸性乳饮料的黏度较小;pH值为3.4~4.4时,酸性乳饮料的沉淀率为2.8O~3.15,悬浮稳定性为0.47~0.49。从豆渣中提取的SSPS可以作为天然的抗氧化剂、防腐剂、增稠剂添加到食品中,也可作为酸性乳饮料的稳定剂。关键词:豆渣;水溶性大豆多糖;抗氧化性;抑菌性;稳定性中图分类号
3、:TS214.9文献标志码:A文章编号:1004—3268(2014)06—0157—04StudyonPropertyandApplicationofWater—solubleSoybeanPolysaccharideinBeanDregWANGHong—tao,CHENCheng,SHIXue—ping,LIXiao—hua(ResearchandEmpolderCenterofFoodSafetyProjectofJiangsuProvince,FoodDepartment,JiangsuInstituteofCommerce,
4、Nanjing211168,China)Abstract:Theoxidationresistance,antibacterialactivityandstabilizingeffectonacidmilkbever—ageofbeandregwater—solublesoybeanpo1ysaccharides(SSPS)frombeandregtreatedwithalkaliandthenextractedunderacidicconditionwerestudiedinthispaper,SOastoprovidetheore
5、tica1basisforitsapplicationinfoodindustry.TheresultshowedthattheclearanceeffectofSSPSonDPPHincreasedwiththemassconcentrationofSSPSincreasing.whenthemassconcentrationwas0.2g/Litsclearanceratewas42.SSPShadcertaininhibitiontoEscherichiacoli。Salmo—nella,Staphylococcusaureus
6、andBacilluscereus,andtheantibacterialactivityincreasedwiththeincreaseofthemassconcentrationofSSPS.SSPShadcertainstabilizingeffectonacidmilkbever—age,whentheadditionamountofSSPSwas6g/L,thecentrifugalprecipitationrateofacidicmilkbeveragewaslessthan3,thesuspensionstability
7、wascloseto0.5,anditsstabilizingeffectwasclosetopectin.WhenSSPSwasusedasstabilizingagent,theviscosityofacidmilkbeveragewaslOW.WhenpHchangedbetween3.4and4.4,theprecipitationrateofacidicmilkbeveragewas2.80—3.15。andthesuspensionstabilitywas0.47—0.49.SSPSextractedfrombeandre
8、gcanbeaddedtofoodasnaturalanti—oxidant,preservativeandthickener,andalsoasstabilizerforacidicmilkbeverage.Keywo
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