Fungitoxic activity of Indian borage (Plectranthus amboinicus) volatiles

Murthy, Pushpa S. and Ramalakshmi, K. and Srinivas, P. (2009) Fungitoxic activity of Indian borage (Plectranthus amboinicus) volatiles. Food Chemistry, 114 (3). pp. 1014-1018. ISSN 0308-8146

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Abstract

Indian borage (Plectranthus amboinicus) was investigated for antifungal activity through agar well diffusion assay. Indian borage oil (IBO) was found to be effective against various fungi tested, as it inhibited the radial growth of mycelia and exhibited broad fungitoxic properties against Aspergillus flavus, Aspergillus niger, Aspergillus ochraceus CFR 221, Aspergillus oryzae, Candida versatilis, Fusarium sp. GF-1019, Penicillium sp., and Saccharomyces cerevisiae. The effective concentration of IBO on the growth of A. ochraceus in yeast extract sucrose medium was determined. IBO completely inhibited ochratoxin (OTA) production by the toxigenic strain A. ochraceus at 500ppm. Also, the application of IBO at 100mg/g in food samples resulted in inhibition of the growth of A. ochraceus in food systems such as groundnut, maize and poultry feed and no detectable amount of OTA was found at a high moisture level of 30%, even after seven days. IBO has the potential for use as a botanical fungitoxicant against fungal attack in stored food commodities.

Item Type:	Article
Uncontrolled Keywords:	Aspergillus ochraceus Indian borage Volatile oil Plectranthus amboinicus Ochratoxin Antifungal
Subjects:	500 Natural Sciences and Mathematics > 07 Life Sciences > 04 Microbiology > 04 Fungi
Divisions:	Plantation Products Spices and Flavour Technology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	17 Jun 2009 09:36
Last Modified:	28 Dec 2011 10:09
URI:	http://ir.cftri.res.in/id/eprint/9055

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