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Titolo:
CARNITINE - A NOVEL COMPATIBLE SOLUTE IN LACTOBACILLUS-PLANTARUM
Autore:
KETS EPW; GALINSKI EA; DEBONT JAM;
Indirizzi:
AGR UNIV WAGENINGEN,DEPT FOOD SCI,DIV IND MICROBIOL,POB 8129 6700 EV WAGENINGEN NETHERLANDS UNIV BONN,INST MIKROBIOL & BIOTECHNOL D-53115 BONN GERMANY
Titolo Testata:
Archives of microbiology
fascicolo: 4, volume: 162, anno: 1994,
pagine: 243 - 248
SICI:
0302-8933(1994)162:4<243:C-ANCS>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
GLYCINE BETAINE; ECTOTHIORHODOSPIRA-HALOCHLORIS; HALOPHILIC EUBACTERIA; ESCHERICHIA-COLI; OSMOTIC-STRESS; WATER-STRESS; TREHALOSE; STABILIZATION; PROLINE; OSMOREGULATION;
Keywords:
LACTOBACILLUS PLANTARUM; COMPATIBLE SOLUTE; OSMOTIC STRESS; CARNITINE; BETAINE; ACETYLCHOLINE; SUCCINYLCHOLINE; GAMMA-BUTYROBETAINE; QUATERNARY AMMONIUM COMPOUND;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
E.P.W. Kets et al., "CARNITINE - A NOVEL COMPATIBLE SOLUTE IN LACTOBACILLUS-PLANTARUM", Archives of microbiology, 162(4), 1994, pp. 243-248

Abstract

The aim of this study was to unravel the identity of compatible solutes accumulated by Lactobacillus plantarum subjected to osmotic stress. Betaine was accumulated simultaneously with a novel compatible soluteidentified as carnitine, both present in the complex medium applied in this study. Beef extract provided the main source of carnitine in the medium. Both carnitine and betaine were accumulated to maximum concentrations of 248 and 231 mu mol.g dry weight(-1), respectively. A defined medium was devised devoid of carnitine. Addition of 0.5 mM carnitine to this medium increased the growth rate from 0.1 h(-1) to 0.2 h(-1) in media with 0.4 M sodium chloride. Also, carnitine made the organism more tolerant to sodium chloride. Growth occurred even when the sodium chloride concentration was raised from 0.5 M to 1.0 M. Quaternary compounds resembling the structure of carnitine and betaine enhanced the growth yield as well. gamma-Butyrobetaine and succinylcholine restored the growth yield up to respectively 91 and 96% compared to non-stressed cells.

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Documento generato il 29/11/20 alle ore 03:29:17