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对甲基苯甲酸连接的氯霉素全抗原合成与鉴定 被引量:6

Synthesis and characterization of chloramphenicol complete antigen linked by 4-methylbenzoic acid
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摘要 以对氯甲基苯甲酸(CBA)或对氯甲基苯甲酸甲酯(MCB)分别与氯霉素(CAP)反应合成氯霉素-对甲基苯甲酸半抗原(CAP-MBAⅠ、CAP-MBAⅡ),再与牛血清白蛋白(BSA)偶联制备全抗原;通过紫外、荧光光谱扫描定性鉴定合成成功;bradford法结合TNBS法定量计算出全抗原表面半抗原密度(HD)。再将CAP-MBAⅡ与卵清蛋白(OVA)合成包被抗原(CAP-MBAⅡ-OVA),间接竞争ELISA计算其抑制率。研究结果表明,半抗原全抗原偶联效率优于CAP-MBAⅠ,MCB与CAP反应合成的半抗原CAP-MBAⅡ更适合蛋白偶联。采用CAP-MBAⅡ-OVA作为包被抗原可以提高ELISA检测的抑制率从而增加其灵敏度。 A new Chloramphenicol(CAP) hapten was prepared by conjugate CAP with 4 (Chloromethyl) benzoic acid(CBA) or Methyl 4 (chloromethyl) benzoate(MCB). Two types of hapten(CAP MBAⅠ,CAP MBAⅡ)were used to synthesis complete antigen(CA) with BSA. CA was identified by UV and florescence spectrum. The hapten density of CA was evaluated by Bradford method together with TNBS method. CAP MBAⅡ was then linked to OVA forming Solid coating antigen(CAP MBAⅡ OVA). The results showed that MCB conjugated with CAP was better than CBA. CAP MBAⅡ OVA can rise the inhibit rate of ELISA and sensitivity can be improved.
出处 《食品工业科技》 CAS CSCD 北大核心 2011年第3期200-203,207,共5页 Science and Technology of Food Industry
基金 江西省教育厅科学技术研究项目(GJJ09062)
关键词 氯霉素 对甲基苯甲酸 连接臂 全抗原 chloramphenicol 4 methylbenzoic acid linking arm complete antigen
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