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Volatile Organic Compound from Pulicaria gnaphalodes and the Antibacterial and Antifungal Properties of Its Essential Oil and Aqueous, Ethanolic and Methanolic Extracts
Author(s) -
Gandomi Hassan,
Abbaszadeh Sepideh,
Rahimikia Edris,
Shariatifar Nabi
Publication year - 2015
Publication title -
journal of food processing and preservation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.511
H-Index - 48
eISSN - 1745-4549
pISSN - 0145-8892
DOI - 10.1111/jfpp.12456
Subject(s) - essential oil , antimicrobial , chemistry , antibacterial activity , preservative , aqueous solution , food science , bacillus cereus , shelf life , antifungal , food preservatives , bacteria , traditional medicine , organic chemistry , biology , microbiology and biotechnology , genetics , medicine
In this study, the chemical composition of P ulicaria gnaphalodes essential oil was evaluated by gas chromatography mass spectrometry analysis. Among the 34 components, alpha‐pinene (32.2%) and 1–8‐cineole (10.9%) were the major components. The antibacterial and antifungal activity of essential oil and aqueous, ethanolic and methanolic extracts from Pu . gnaphalodes against some bacteria and fungi were investigated. All the compounds that were found to have antibacterial activity with essential oil ( EO ) were the most potent. Alcoholic extracts showed greater inhibition zone compared with the aqueous extract. Furthermore, B acillus cereus was the most sensitive strain with minimum inhibitory concentrations of 0.025, 0.8, 0.1 and 0.1% for EO , aqueous, ethanolic and methanolic extracts, respectively. The EO exhibited greater inhibition of fungal growth compared with the extracts. Furthermore, aqueous extract was more effective than ethanolic and methanolic extracts. The result of this study confirms the antimicrobial activity of Pu . gnaphalodes extracts and EO and suggests the possibility of using them in foods to prevent the growth of foodborne bacteria and fungi and extend the safety and shelf life of foods. Practical Applications Demonstrating the antimicrobial activity of plant derivatives including essential oil and extracts is a promising approach to replace chemical food preservative with natural ones to extend shelf life and/or improve the safety of food products.