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  • Title: Monoclonal antibodies for the analysis of gossypol in cottonseed products.
    Author: Wang X, Plhak LC.
    Journal: J Agric Food Chem; 2004 Feb 25; 52(4):709-12. PubMed ID: 14969520.
    Abstract:
    Immunogens, prepared by conjugating either (+)-gossypol or (-)-gossypol to Limulus polyphemushemolymph protein, were used for immunization in the production of monoclonal antibodies. Hybridoma were evaluated for their relative affinity to racemic gossypol, (+)-gossypol, (-)-gossypol, gossypol analogues, and their lysine derivatives. The monoclonal antibody obtained showed higher affinity to gossypol and gossypol analogues as compared to their lysine derivative counterparts. An indirect competitive enzyme-linked immunosorbent assay (ELISA) with this antibody was used to measure gossypol in 15 cottonseed meal products; the results showed good correlation with results obtained using the AOCS (free gossypol) official method (R(2) = 0.89). The direct recognition of both free gossypol and bound gossypol using this antibody will be useful for rapid screening and quality control.
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