Related Experiment Video
Updated: Mar 10, 2026

Measuring Volatile and Non-volatile Antifungal Activity of Biocontrol Products
Published on: December 5, 2020
Chemical composition and antimicrobial activity of garlic essential oils evaluated in organic solvent, emulsifying,
Hoda S El-Sayed1, Remigius Chizzola2, Asmaa A Ramadan3
1Dairy Department, National Research Centre, Cairo, Egypt.
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.
Related Concept Videos
Antimicrobial Effectiveness
Chemical Agents for Microbial Control
Biological Methods for Microbial Control
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry
Combined Effects of Drugs: Synergism
Such synergistic combinations...

