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Food Chem

Title:		"Chemical composition and antimicrobial activity of garlic essential oils evaluated in organic solvent, emulsifying, and self-microemulsifying water based delivery systems"
Author(s):		El-Sayed HS; Chizzola R; Ramadan AA; Edris AE;
Address:		"Dairy Department, National Research Centre, Cairo, Egypt. University of Veterinary Medicine, Vienna, Austria. Food Sciences and Nutrition Department, National Research Centre, Cairo, Egypt. Aroma & Flavor Chemistry Department, National Research Centre, Cairo, Egypt. Electronic address: amr_edris@hotmail.com"
Journal Title:		Food Chem
Year:		2017
Volume:		20161012
Issue:
Page Number:		196 - 204
DOI:		10.1016/j.foodchem.2016.10.052
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"The chemical composition of garlic essential oils (GEOs) extracted from two different cultivars has been characterized using GC-MS analysis. GEO that was extracted from the white-skin cultivar (WGO) had a lower percentage of the major constituents diallyl trisulfide and diallyl disulfide (45.76 and 15.63%) than purple-skin cultivar (PGO) which contained higher percentages (58.53 and 22.38%) of the same components, respectively. Evaluation of the antimicrobial activity of WGO and PGO delivered in organic solvent (isopropanol) showed dose-dependent antimicrobial activity against the tested pathogenic bacteria and fungi, especially with WGO. On the other hand, formulation of both GEOs in water-based emulsions totally suppressed the antimicrobial activity of GEO. Re-formulation of GEOs in water-based microemulsion (particle size 10.1nm) showed better antimicrobial activity than emulsions at the same concentration of GEOs. This study can assist in designing the proper water-based delivery system of GEO for application in food preservation"
Keywords:		"Allyl Compounds/analysis Anti-Infective Agents/*chemistry Aspergillus flavus/drug effects Aspergillus niger/drug effects Disulfides/analysis Dose-Response Relationship, Drug Drug Delivery Systems Emulsions Escherichia coli/drug effects Food Preservation G;"
Notes:		"MedlineEl-Sayed, Hoda S Chizzola, Remigius Ramadan, Asmaa A Edris, Amr E eng England 2016/12/17 Food Chem. 2017 Apr 15; 221:196-204. doi: 10.1016/j.foodchem.2016.10.052. Epub 2016 Oct 12"