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时间:2020-04-19
《鳙鱼活性多肽酶法制备工艺研究.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、第31卷第3期河南科学Vol.31No.32013年3月HENANSCIENCEMar.2013文章编号:1004-3918(2013)03-0297-06鳙鱼活性多肽酶法制备工艺研究121张雪,陈复生,隋继学(1.河南牧业经济学院食品工程系,郑州450011;2.河南工业大学,郑州450000)摘要:为优化鳙鱼活性多肽酶法制备工艺,分析了鳙鱼肉糜预处理温度和酶解温度对水解度的影响,确定了最佳的预处理条件为85℃水浴中加热预处理20min,酶解温度设为55~75℃.经均匀设计实验优选和最优条件验证实验证实,以氮溶指数为指标的最优酶解条件为:酶解时间8.0h,固
2、液比1∶4.25,蛋白酶A用量3‰,酶解温度75℃,产物氮溶指数达80.54%;以多肽得率为指标的最优酶解条件为:酶解时间8.0h,固液比1∶2,蛋白酶A用量3‰,酶解温度75℃,产物多肽得率达11.92%;以产物总抗氧化指数为指标的最优酶解条件为:酶解时间1.0h,固液比1∶6,蛋白酶A用量3‰,酶解温度55℃,所得产物总抗氧化指数达87.42‰.关键词:鳙鱼;多肽;酶解;抗氧化活性中图分类号:S985.1+3文献标识码:AEnzymaticExtractionofActivePolypeptidefromHypophthalmichthysnobilis1
3、21ZhangXue,ChenFusheng,SuiJixue(1.FoodEngineeringDepartment,HenanAnimalHusbandryandEconomyCollege,Zhengzhou450011,China;2.HenanIndustryUniversity,Zhengzhou450000,China)Abstract:ForoptimizatingtheenzymaticextractionofactivepolypeptidefromHypophthalmichthysnobilis,weinvestigatedtheeff
4、ectsofmincedmeatpretreatmenttemperatureandenzymatictemperatureonthedegreeofhydrolysis,anddeterminedthattheoptimalpretreatmentconditionswasinawaterbathof85℃toheatpretreatment20min.Throughuniformdesignandverificationexperiment,weconfirmedthattheoptimalenzymatichydrolysisconditionsbyus
5、ingoptimalconditionsusenitrogensolubilityindexasanindicatorwereenzymatichydrolysistime8.0h,thesolid-liquidratio1∶4.25,dosageofproteaseA3‰,hydrolysistemperature75℃,thennitrogensolubilityindexoftheproductreached80.54%.Theoptimalhydrolysisconditionsofusingpolypeptideyieldasindicatorswe
6、reenzymatichydrolysistime8.0h,solid-liquidratioof1∶2,dosageofproteaseA3‰,thetemperatureofenzymatichydrolysis75℃,thenthepolypeptideyieldofproductreached11.92%.Theoptimalenzymatichydrolysisconditionsofusingthetotalantioxidantindexoftheproductasindicatorsweretheenzymatictime1.0h,solid-
7、liquidratio1∶6,dosageofproteaseA3‰,hydrolysistemperature55℃,andthenthetotalantioxidantindexoftheresultingproductreached87.42‰.Keywords:Hypophthalmichthysnobilis;polypeptide;enzymolysis;antioxidantactivity鳙鱼(Hypophthalmichthysnobilis)又名花鲢、胖头鱼、大头鱼、麻鲢,是淡水鱼的一种.鳙鱼味甘、性温,是我国特有的物种资源,具有特殊的营养
8、滋补与药用价值.鳙鱼属高蛋白、低脂肪、
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