Development of a Monoclonal Antibody-Based Indirect Competitive Enzyme-Linked Immunosorbent Assay for the Rapid Detection of Gallic Acid
文献类型: 外文期刊
作者: Jiajing Duan;Xiuxia Zheng;Ran Tao;Long Li;Fengzhong Wang;Yufeng Sun;Bei Fan
作者机构:
关键词: gallic acid;hapten;ic-ELISA;monoclonal antibody;rapid detection
期刊名称: Biosensors
ISSN: 2079-6374
年卷期: 2024 年 14 卷 4 期
页码:
收录情况: SCIE(2024版) ; ; EI(2024版)
摘要: Gallic acid (GA) is closely related to the quality of herbal medicines and other agricultural products. In order to facilitate the rapid detection of GA, we developed a monoclonal antibody-based ic-ELISA method. Antigens with and without connecting arms were prepared. It was found that the introduction of connecting arms (linear carbon chain) was beneficial for immune response. By utilizing hybridoma technology, a specific mAb (anti-GA-M702) was screened and identified, which exhibited a 1:40,500 antibody titer and IgG2b antibody subtype. The ic-ELISA assay was established based on anti-GA-M702. The optimal working concentrations of the encapsulated antigen and antibody were 0.5 µg/mL and 0.67 µg/mL, respectively. The ic-ELISA method showed a linear detection range of 297.17–2426.61 ng/mL for GA with a sensitivity of 849.18 ng/mL. It displayed a good applicability for the determination of GA in Galla chinensis. In conclusion, the ic-ELISA method provides an efficient approach to the rapid detection of GA in products.
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