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A Novel Secondary Metabolite Relative to the Degradation of PR Toxin by Penicillium roqueforti

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Abstract.

A secondary metabolite different from PR-imine and PR-amide was produced in the liquid (YESC) and solid (buckwheat) culture medium of Penicillium roqueforti. We isolated and purified the compound in pure and colorless crystalline form. On the basis of elemental analysis, mass, 1H and 13C nuclear magnetic resonance, infrared, and UV spectroscopy, the compound was identified as PR-acid (C17H20O7). The structures of PR-acid and PR toxin (C17H20O6) are closely related. Moreover, we discovered that PR-acid disappeared concurrently with the PR toxin in the culture medium. Thus, we postulate that PR toxin is degraded to PR-acid in the culture of P. roqueforti.

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Authors and Affiliations

  1. Institute of Biochemistry, National Yang-Ming University, Taipei 11221, Taiwan, Republic of China , , , , , , TW

    Shenq-Chyi Chang, Sheau-Farn Yeh, Wen-Yee Lei & Meng-Yi Chen

  2. Department of Chemistry, Chinese Culture University, Taipei, Taiwan, Republic of China , , , , , , TW

    Shyh-Yuan Li

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  1. Shenq-Chyi Chang
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  2. Sheau-Farn Yeh
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  3. Shyh-Yuan Li
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  4. Wen-Yee Lei
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  5. Meng-Yi Chen
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Chang, SC., Yeh, SF., Li, SY. et al. A Novel Secondary Metabolite Relative to the Degradation of PR Toxin by Penicillium roqueforti . Curr Microbiol 32, 141–146 (1996). https://doi.org/10.1007/s002849900025

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  • DOI: https://doi.org/10.1007/s002849900025

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