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文蛤免疫活性肽酶解条件的优化及其活性研究OACSCD

Studies on Optimization of Enzymatic Hydrolysis Conditions of Immunoactive Peptides from Meretrix meretrix Linnaeus and It's Activity

中文摘要英文摘要

目的:采用酶解法制备文蛤中的免疫活性肽(MLIP),优化酶解条件,并对其免疫活性进行研究.方法:选用5种常用蛋白酶对文蛤进行酶解,以酶解液对RAW264.7细胞的增殖效果为评价依据,筛选最适蛋白酶.然后进行单因素实验,并选择影响较显著的3个因素,通过响应面法对酶解条件进行优化,用优化的工艺参数制备MLIP.最后,探究不同质量浓度MLIP对RAW264.7细胞相对增殖率、细胞形态及一氧化氮(NO)释放量的影响.结果:复合蛋白酶为最适用酶,优化得到的最佳酶解工艺参数为:pH 6.8、料液比1∶6.2、酶添加量3 493 U/g,45 ℃酶解3 h,预测得到的酶解产物对RAW264.7细胞的相对增殖率为71.40%,验证试验得到结果与之相近.当MLIP质量浓度为0.4mg/mL时,细胞相对增殖率最高,不同质量浓度的MLIP会引起细胞不同程度的分化且对NO的释放有一定促进作用.结论:以文蛤为原料制备的多肽具有较好的免疫活性.本研究可为文蛤免疫活性肽的制备及其进一步研究提供参考.

Objective:The main purpose of this paper was to prepare the immunoactive peptides from Meretrix meretrix Linnaeus(MLIP)by enzymatic hydrolysis,optimize the enzymolysis conditions of MLIP,and studied its immune activity.Method:MLIP was used as raw material,and five commonly used proteases were chosen to hydrolyze.The proliferation rate of RAW264.7 cells was selected as an indicator to screen the most suitable protease for enzymolysis solution.Then,the single factor test was carried out,and three factors with significant impact were selected to optimize the enzymolysis conditions by response surface method,and MLIP was prepared with the optimized process parameters.In addition,this research also studied the effects of different concentrations of MLIP on the relative proliferation rate,cell morphology and NO release of RAW264.7 cells.Results:The proliferation rate results showed that complex protease was the most suit-able enzyme to prepare MLIP.The optimal enzymatic parameters obtained by response surface optimization were:pH 6.8,solid-liquid ratio 1∶6.2,enzyme dosage 3 493 U/g,enzymolysis at 45 ℃ for 3 hours.The relative proliferation rate of RAW264.7 cells was predicted to be 71.40%,which were basically the same with the results obtained by verification experiment.In addition,RAW264.7 cells showed the best proliferation promoting effect when the concentration of MLIP was 0.4 mg/mL.All dose of MLIP caused differentiation to varying degrees of cell differentiation and had a certain pro-moting effect on the release of NO of RAW264.7 cells.Conclusion:The results indicated that the MLIP exhibit desirable immune activity,which might provide reference for the preparation and further study of the MLIP.

惠珍珍;李娜;王晓萱;孙舒扬;王平;杜超

鲁东大学食品工程学院 山东烟台 264025||鲁东大学生物纳米技术研究院 山东烟台 264025鲁东大学食品工程学院 山东烟台 264025||烟台市预制食品纳米科学与技术重点实验室 山东烟台 264025||烟台市绿色食品加工与质量控制工程研究中心 山东烟台 264025鲁东大学食品工程学院 山东烟台 264025||鲁东大学生物纳米技术研究院 山东烟台 264025||烟台市预制食品纳米科学与技术重点实验室 山东烟台 264025||烟台市绿色食品加工与质量控制工程研究中心 山东烟台 264025

免疫活性肽酶解条件优化RAW264.7细胞相对增殖率

immunoactive peptideoptimization of enzymatic hydrolysis conditionsRAW264.7 cellsrelative growth rate

《中国食品学报》 2023 (011)

161-169 / 9

山东省自然科学基金青年项目(ZR2020QC239);2021年山东省高等学校"青创人才引育计划"项目

10.16429/j.1009-7848.2023.11.016

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