Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/2685
Título: Effect of phenolic acids on glucose and organic acid metabolism by lactic acid bacteria from wine
Autor: Campos, Francisco M.
Figueiredo, Ana R.
Hogg, Tim A.
Couto, José A.
Palavras-chave: Phenolic acids
Lactic acid bacteria
Oenococcus oeni
Lactobacillus hilgardii
Glucose metabolism
Organic acid metabolism
Malolactic fermentation
Wine
Data: 2009
Editora: Elsevier
Citação: "Food Microbiology". ISSN 0740-0020. 26: 4 (2009) 409–414
Resumo: 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.
URI: http://hdl.handle.net/10400.14/2685
Versão do Editor: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WFP-4VJM2TH-1&_user=2460358&_coverDate=06%2F30%2F2009&_rdoc=8&_fmt=high&_orig=browse&_origin=browse&_zone=rslt_list_item&_srch=doc-info%28%23toc%236800%232009%23999739995%231055072%23FLA%23display%23Volume%29&_cdi=6800&_sort=d&_docanchor=&_ct=15&_acct=C000057417&_version=1&_urlVersion=0&_userid=2460358&md5=978a4b015c3c6c7c445bd129e6fb6baf&searchtype=a
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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