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Abstract Detail


Chemical Ecology

Chiang, Yu-Chung [1], Hsieh, Chun-Chun [2], Yen, Tsair-Bor [2].

Antifungal properties of Litsea cubeba essential oils against molds.

Products consist of wood fiber such as furniture, book and wall paper are susceptible to fungal attack, resulting in deterioration of such products. Therefore, developing an environmental-friendly anti-mold agent becomes an important issue. The purposes of this study are to evaluate the inhibitory properties of essential oils extracted from Litsea cubeba (Lour.) Pers and their major compounds against molds, Aspergillus niger, Penicillium citrinum and Trichoderma viride. Chemical analysis for essential oils was carried out by GC/MS, and study of morphological change on fungal hyphae was observed by scanning electron microscope (SEM). At the concentrations of 200 and 300 µg/ml, fruit oil revealed the strongest antifungal activity against the molds tested, following by twig and leave oils. As the results of chemical analysis, citral (geraniol and neral), and lemonene were the major compounds in the fruit and twig oils. Among the compounds, geraniol performed the best antifungal activity with minimum inhibitory concentration (MIC) values of 88, 256 and 275 µg/ml against P. citrinum, T. viride and A. niger, respectively. Structural alteration of fungal hyphae treated with geraniol was found, indicating that cell wall permeability might be dramatically changed, and resulted in the dysfunction of fungal cells.


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1 - Pingtung University of Science and Technology, Department of Life Sciences, Depart. Life Science, NPUST,, No. 1, Hseuhfu Rd. Neipu, Pingtung, 912, Taiwan
2 - National Pingtung University of Science and Technology, Department of Tropical Agriculture and International Cooperation, No.1, Sheuh-Fu Rd. Nei-Pu, Pingtung, 912, Taiwan

Keywords:
Anti-mold
Essential oils
Litsea cubeba
Geraniol
Citral
SEM.

Presentation Type: Poster:Posters for Topics
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P64001
Abstract ID:957


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