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Antimicrobial properties of 1‐monoacylglycerols prepared from undecanoic (C11:0) and undecenoic (C11:1) acid
Author(s) -
Doležalová Magda,
Janiš Rahula,
Svobodová Hana,
Kašpárková Věra,
Humpolíček Petr,
Krejčí Jiří
Publication year - 2010
Publication title -
european journal of lipid science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 94
eISSN - 1438-9312
pISSN - 1438-7697
DOI - 10.1002/ejlt.200900295
Subject(s) - antimicrobial , bacillus cereus , food science , bacteria , chemistry , aspergillus niger , microbiology and biotechnology , staphylococcus aureus , biology , genetics
Antimicrobial activity of monoacylglycerols (MAG) with odd number of carbons prepared from undecanoic (MAG C11:0) and undecenoic (MAG C11:1) was investigated. Data showed that both studied substances successfully inhibited Gram‐positive cocci ( Staphylococcus aureus ) and spore‐forming rods ( Bacillus cereus ). Gram‐negative bacteria were highly resistant against MAG C11:0 and showed considerable tolerance against MAG C11:1. Minimum inhibitory concentration (MIC) of MAG C11:1 was possible to determine for Escherichia coli only. Complete inhibition of three fungi genera ( Alternaria , Cladosporium , Trichothecium ) was achieved using MAG C11:1 with a concentration higher than 750 µg/mL. The growth of Aspergillus niger , Mucor racemosus , Phoma , Scopulariopsis , Trichoderma was significantly reduced. Generally, MAG C11:1 was more efficient than MAG C11:0 against all tested microorganisms. Due to a rich production of degradation enzymes, some fungi species surprisingly adapted their metabolism during growth and were even able to utilise tested MAG as a source of carbon. Practical applications: MAG composed of fatty acids with odd number of carbons in molecule are a promising group of substances applicable in food industry and cosmetics. They represent materials with broad spectrum of antimicrobial activity, especially against Gram‐positive bacteria. More efficient MAG C11:1 with a double bond in molecule can be recommended for reduction of S. aureus that cause food enterotoxicosis.