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食品研究与开发:2023,44(24):98-106
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麦麸酶解提取物的制备及其抗氧化能力和体外发酵效果
(天津科技大学 食品科学与工程学院,天津 300457)
Preparation of Wheat Bran Enzymatic Extract and Evaluation of Its Antioxidant Capacity and in vitro Fermentation Effect
(College of Food Engineering and Biotechnology,Tianjin University of Science & Technology,Tianjin 300457,China)
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投稿时间:2023-05-18    
中文摘要: 采用生物酶联催化法从麦麸中提取水溶性生物活性物质,对其成分组成、抗氧化指标以及体外模拟人体肠道发酵效果进行研究。结果表明,麦麸酶解提取物(wheat bran enzymatic extract,WBEE)的最佳制备料液比为1∶12(g/mL),pH8.0,碱性水解蛋白酶(alkaline hydrolysis protease,AHPE)加酶量为0.8%,贝莱斯芽孢杆菌发酵酶(Bacillus velezensis fermentation enzyme,BVFE)加酶量为2%,反应时间为3 h,反应温度为60 ℃。与麦麸水提取物(wheat bran aqueous extract,WBAE) 相比,WBEE 得率提高了111.6%;WBEE 表现出更好的抗氧化性能,2,2-联苯基-1-苦基肼基(2,2-diphenyl-1-picrylhydrazyl,DPPH)自由基和2,2'-联氮双(3-乙基苯并噻唑啉-6-磺酸铵盐)[2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid ammonium salt),ABTS]阳离子自由基清除能力分别提升了4.9 倍和2.05 倍;还原力和铁离子还原/抗氧化能力(ferric ion reducing antioxidant power,FRAP)也分别提升了2.97 倍和5.24 倍;经体外发酵后,WBEE中乙酸(140.25 μmol/g)、丙酸(121.26 μmol/g)和丁酸(115.86 μmol/g)含量增幅分别为34.2%、40.0%和79.0%。因此,WBEE 表现出良好的抗氧化能力和短链脂肪酸特别是丁酸的富集能力。
Abstract:The water-soluble bioactive substances were extracted from wheat bran using a bioenzymatic cocatalyzed method.The composition of the components,antioxidant indexes and the effect of in vitro simulated human intestinal fermentation were investigated.The results showed that the optimal preparation conditions of wheat bran enzymatic extract (WBEE)were 1∶12 (g/mL)ratio of material to water,pH8.0,addition of alkaline hydrolysis protease (AHPE,0.8%),addition for Bacillus velezensis fermentation enzyme (BVFE,2%),reaction time for 3 h and reaction temperature at 60 ℃.Compared with wheat bran aqueous extract(WBAE),WBEE yield was increased by 111.6%,and presented better antioxidant performance,with a 4.9-fold and 2.05-fold increase in scavenging capacity for 2,2-diphenyl-1-picrylhydrazyl(DPPH)radical and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid ammonium salt)(ABTS)cation radicals,respectively and a 2.97-fold and 5.24-fold increase inreducingpowerandferricionreducingantioxidantpower(FRAP),respectively.Afterinvitrofermentation,the contents of acetic acid(140.25 μmol/g),propionic acid(121.26 μmol/g)and butyric acid(115.86 μmol/g)in WBEE increased by 34.2%,40.0% and 79.0%,respectively.Therefore,WBEE had favorable antioxidant capacity and high enrichment for short-chain fatty acid,especially butyric acid.
文章编号:202324014     中图分类号:    文献标志码:
基金项目:天津市科学计划项目(20JCZDJC00040);天津市高等学校大学生创新训练计划项目(202210057037)
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