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Pinelloside, an antimicrobial cerebroside from Pinellia ternata.

J H Chen1, G Y Cui, J Y Liu

  • 1Institute of Functional Biomolecules, State Key Laboratory for Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210093, People's Republic of China.

Phytochemistry
|October 16, 2003
PubMed
Summary

A novel antimicrobial cerebroside, pinelloside, was isolated from Pinellia ternata tubers. This compound demonstrated significant inhibitory activity against various bacteria and fungi, highlighting its potential as a natural antimicrobial agent.

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Area of Science:

  • Natural Product Chemistry
  • Microbiology
  • Pharmacognosy

Background:

  • Pinellia ternata is a traditional medicinal herb with a history of use in treating various ailments.
  • Cerebrosides are a class of lipids known for their diverse biological activities, including antimicrobial properties.

Purpose of the Study:

  • To isolate and characterize a novel antimicrobial compound from Pinellia ternata.
  • To evaluate the antimicrobial spectrum and potency of the isolated compound.

Main Methods:

  • Isolation of pinelloside from air-dried Pinellia ternata tubers.
  • Structure elucidation using advanced spectroscopic techniques (IR, MS, NMR, DEPT, HMBC, HMQC, COSY, NOESY).
  • Antimicrobial activity testing using minimum inhibitory concentration (MIC) assays against selected bacterial and fungal strains.

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Main Results:

  • Pinelloside was successfully isolated and its complex structure was determined.
  • The compound exhibited inhibitory effects against Bacillus subtilis, Staphylococcus aureus, Aspergillus niger, and Candida albicans.
  • Minimum inhibitory concentrations (MICs) ranged from 10 to 50 microg/ml for the tested microorganisms.

Conclusions:

  • Pinelloside is a potent antimicrobial cerebroside with potential therapeutic applications.
  • The findings support the traditional use of Pinellia ternata and offer a basis for further drug development.