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Food Microbiol

Title:		Effect of phenolic acids on glucose and organic acid metabolism by lactic acid bacteria from wine
Author(s):		Campos FM; Figueiredo AR; Hogg TA; Couto JA;
Address:		"Escola Superior de Biotecnologia, Universidade Catolica Portuguesa, Rua Dr. Antonio Bernardino de Almeida, 4200-072 Porto, Portugal. fmcampos@mail.esb.ucp.pt"
Journal Title:		Food Microbiol
Year:		2009
Volume:		20090207
Issue:		4
Page Number:		409 - 414
DOI:		10.1016/j.fm.2009.01.006
ISSN/ISBN:		1095-9998 (Electronic) 0740-0020 (Linking)
Abstract:		"The influence of phenolic (p-coumaric, caffeic, ferulic, gallic and protocatechuic) acids on glucose and organic acid metabolism by two strains of wine lactic acid bacteria (Oenococcus oeni VF and Lactobacillus hilgardii 5) was investigated. Cultures were grown in modified MRS medium supplemented with different phenolic acids. Cellular growth was monitored and metabolite concentrations were determined by HPLC-RI. Despite the strong inhibitory effect of most tested phenolic acids on the growth of O. oeni VF, the malolactic activity of this strain was not considerably affected by these compounds. While less affected in its growth, the capacity of L. hilgardii 5 to degrade malic acid was clearly diminished. Except for gallic acid, the addition of phenolic acids delayed the metabolism of glucose and citric acid in both strains tested. It was also found that the presence of hydroxycinnamic acids (p-coumaric, caffeic and ferulic) increased the yield of lactic and acetic acid production from glucose by O. oeni VF and not by L. hilgardii 5. The results show that important oenological characteristics of wine lactic acid bacteria, such as the malolactic activity and the production of volatile organic acids, may be differently affected by the presence of phenolic acids, depending on the bacterial species or strain"
Keywords:		"Chromatography, High Pressure Liquid Fermentation Food Microbiology Glucose/*metabolism Hydroxybenzoates/*pharmacology Lactobacillus/drug effects/*metabolism Leuconostoc/drug effects/*metabolism Malates/metabolism Species Specificity Volatilization Wine/*;"
Notes:		"MedlineCampos, Francisco M Figueiredo, Ana R Hogg, Tim A Couto, Jose A eng Research Support, Non-U.S. Gov't England 2009/04/21 Food Microbiol. 2009 Jun; 26(4):409-14. doi: 10.1016/j.fm.2009.01.006. Epub 2009 Feb 7"