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J Food Sci

Title:		Optimizing the use of garlic oil as antimicrobial agent on fresh-cut tomato through a controlled release system
Author(s):		Ayala-Zavala JF; Gonzalez-Aguilar GA;
Address:		"Dept. of Centro de Investigacion en Alimentacion y Desarrollo, A.C. (CIAD, AC), Carretera a la Victoria Km 0.6, La Victoria. Hermosillo, Sonora 83000, Mexico. jayala@ciad.mx"
Journal Title:		J Food Sci
Year:		2010
Volume:		75
Issue:		7
Page Number:		M398 - M405
DOI:		10.1111/j.1750-3841.2010.01723.x
ISSN/ISBN:		1750-3841 (Electronic) 0022-1147 (Linking)
Abstract:		"Encapsulation of garlic oil (GO) in beta-cyclodextrin (beta-CD) was undertaken to generate a release system of antimicrobial volatiles and tested on microbial growth and sensory quality of fresh-cut tomato. GO volatile profile was characterized by gas chromatography mass spectrometry and to demonstrate the disadvantages of applying free GO to fresh-cut tomato, the effect of different free oil treatments (0, 50, 100, and 200 mug/100 g) on microbial growth and sensorial quality was tested. The effect of GO capsules (0, 0.25, 0.5, and 1 g/100 g) on microbial growth and sensory quality of tomato was also investigated. Allyl disulfide was the most abundant GO compound identified. The release of volatiles from GO: beta-CD capsules (12: 88 [w/w] ratio) was evaluated at 100% relative humidity (RH). Close to 70% of GO volatiles were released from capsules when exposed to 100% RH during 5 wk. The most effective antimicrobial concentrations of free oil (100 and 200 mug/100 g) applied to tomatoes did not present acceptable sensory quality for panelists. Tomato was affected by the highest concentration of GO capsules applied, showing the lowest microbial growth and the highest sensory quality. In this context, successful encapsulation in beta-CD could stimulate further interest in the use of GO for the control of microbial growth in fresh-cut tomato. PRACTICAL APPLICATION: The present study demonstrated that relative humidity in-package of fresh-cut tomatoes can be used as a trigger to release antimicrobial garlic oil volatiles from beta-cyclodextrin capsules, reducing microbial growth and the sensory effect of the treatment caused by the free garlic oil. In this context, successful encapsulation in beta-cyclodextrin could stimulate further interest in the use of garlic oil for the control of microbial growth in fresh-cut tomatoes"
Keywords:		"Adult Allyl Compounds/chemistry/*pharmacology Anti-Infective Agents/chemistry/*pharmacology Colony Count, Microbial Delayed-Action Preparations/pharmacology Drug Compounding Fast Foods/*microbiology Female Food Preservation/*methods Fruit/*microbiology Fu;"
Notes:		"MedlineAyala-Zavala, J Fernando Gonzalez-Aguilar, Gustavo A eng Comparative Study Research Support, Non-U.S. Gov't 2011/05/04 J Food Sci. 2010 Sep; 75(7):M398-405. doi: 10.1111/j.1750-3841.2010.01723.x"