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食品研究与开发:2024,45(4):172-176
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间接竞争ELISA检测杏仁过敏原Amandin
(1.天津国际生物医药联合研究院,天津 300457;2.天津科技大学天津市食品质量与健康重点实验室,食品营养与安全国家重点实验室,食品科学与工程学院,天津 300457;3.华芯领创(天津)生物科技有限公司,天津 300451)
Detection of Almond Allergen Amandin by Indirect Competitive ELISA
(1.Tianjin International Joint Academy of Biomedicine,Tianjin 300457,China;2.Key Laboratory of Food Quality and Health of Tianjin,State Key Laboratory of Food Nutrition and Safety,College of Food Science and Engineering,Tianjin University of Science&Technology,Tianjin 300457,China;3.Hua Xin Ling Chuang(Tianjin)Biotechnology Co.,Ltd.,Tianjin 300451,China)
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投稿时间:2022-07-14    
中文摘要: Amandin 是引起杏仁过敏的主要过敏原。通过提取、纯化得到Amandin 蛋白并制备出抗Amandin 抗体。该抗体与花生全蛋白、芝麻全蛋白、核桃JugR1、β-乳球蛋白、酪蛋白、溶菌酶均无交叉反应。通过优化包被原浓度、抗体浓度以及缓冲液pH 值等条件,建立间接竞争酶联免疫吸附测定(enzyme-linked immunosorbent assay,ELISA)检测Amandin 的方法。该方法的灵敏度为(0.66±0.04)μg/mL,检出限为(0.08±0.04)μg/mL。在饼干、面包、冰淇淋样品中的添加回收试验结果表明,该方法的回收率为68.22%~114.00%。稳定性结果表明Amandin 蛋白在37 ℃条件下可以稳定保存7 d。
Abstract:Amandin is the main allergen causing almond allergy.Amandin was obtained by extraction and purification,and the anti-Amandin antibody was prepared. The antibody showed no cross reaction with peanut whole protein,sesame whole protein,walnut JugR1,β-lactoglobulin,casein,or lysozyme. After optimization of coating antigen concentration,antibody dilution factor,and buffer pH,an indirect competitive enzyme-linked immunosorbent assay(ELISA)was established for the detection of Amandin.The established method showed the sensitivity of(0.66±0.04)μg/mL,the limit of detection of(0.08±0.04)μg/mL,and the recovery of 68.22%-114.00% in biscuit,bread,and ice cream samples.The Amandin could be stored stably for 7 days at 37 ℃.
文章编号:202404023     中图分类号:    文献标志码:
基金项目:天津市食品质量与健康重点实验室(天津科技大学)开放课题项目(TJS202104)
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