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Istituto di scienza dell'alimentazione

Torna all'elenco Contributi in rivista anno 2018

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Aerobic and respirative growth of heterofermentative lactic acid bacteria: A screening study

Anno di pubblicazione: 2018

Formato: Elettronico

Autori: Zotta T.; Ricciardi A.; Ianniello R.G.; Storti L.V.; Glibota N.A.; Parente E.

Affiliazioni autori: Istituto di Scienze dell'Alimentazione-CNR, Avellino, , , Italy; Istituto di Scienze dell'Alimentazione-CNR, Avellino, , , Italy; Scuola di Scienze Agrarie, Forestali, Alimentari e Ambientali, UniversitÓ degli Studi della Basilicata, Potenza, , Italy; Departamento de Ciencias de la Salud, Facultad de Ciencias Experimentales, Universidad de JaÚn, Campus de Excelencia Internacional Agroalimentario (ceiA3), JaÚn, 23071, , Spain; Dipartimento di Scienze, UniversitÓ degli Studi della Basilicata, Potenza, , Italy

Autori CNR:

  • TERESA ZOTTA

Lingua: inglese

Abstract: Heterofermentative lactic acid bacteria (76 strains) belonging to Lactobacillus, Leuconostoc and Weissella species which are important in fermentation, spoilage or as probiotics were screened in a factorial experiment for their ability to grow, produce catalase and consume oxygen in aerobiosis or in anaerobiosis, with or without supplementation with hemin and/or menaquinone in a medium containing glucose as a carbohydrate source. Aerobiosis improved growth with a few exceptions. The effect of supplementation with heme and/or menaquinone was strain specific and clear evidence of heme-boosted respiration was found in some cases. Heme-catalase was produced by strains of L. brevis, W. minor and Leuc. mesenteroides; some strains of the latter species produced non-heme catalase. Shaken flasks experiments showed that aerobic growth resulted in increased maximum growth rate and in a limited increase in biomass. Heme supplementation during aerobic growth resulted in a further increase in growth rate and final biomass only for a few strains; this was often related to catalase, which was also responsible for increased tolerance of H2O2. In both experiments we found evidence of heme toxicity, especially in anaerobiosis and in absence of menaquinone. Dose response curves for aerobic growth in the presence of combinations of hemin and menaquinone were non-monotonic, with growth stimulation at low doses of heme (<2.5 mg/l) and toxicity at higher doses. Menaquinone at 0.25-8 mg/l increased growth stimulation and partially reduced toxicity.

Lingua abstract: inglese

Pagine da: 117

Pagine a: 127

Rivista:

Food microbiology Academic Press,
Paese di pubblicazione: Regno Unito
Lingua: inglese
ISSN: 0740-0020

Numero volume: 76

DOI: 10.1016/j.fm.2018.02.017

Referee: Sý: Internazionale

Stato della pubblicazione: Published version

Indicizzato da: Scopus [2-s2.0-85048629793]

Parole chiave:

  • Heterofermentative LAB
  • Aerobic metabolism
  • Oxidative Stress

URL: http://www.scopus.com/record/display.url?eid=2-s2.0-85048629793&origin=inward

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