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Food Microbiol

Title:		Response of Leuconostoc strains against technological stress factors: Growth performance and volatile profiles
Author(s):		Cicotello J; Wolf IV; D'Angelo L; Guglielmotti DM; Quiberoni A; Suarez VB;
Address:		"Instituto de Lactologia Industrial (Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Cientificas y Tecnicas), Facultad de Ingenieria Quimica, Santiago del Estero 2829, S3000AOM, Santa Fe, Argentina. Instituto de Lactologia Industrial (Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Cientificas y Tecnicas), Facultad de Ingenieria Quimica, Santiago del Estero 2829, S3000AOM, Santa Fe, Argentina. Electronic address: vivisuar@fiq.unl.edu.ar"
Journal Title:		Food Microbiol
Year:		2018
Volume:		20180214
Issue:
Page Number:		362 - 370
DOI:		10.1016/j.fm.2018.02.010
ISSN/ISBN:		1095-9998 (Electronic) 0740-0020 (Linking)
Abstract:		"The ability of twelve strains belonging to three Leuconostoc species (Leuconostoc mesenteroides, Leuconostoc lactis and Leuconostoc pseudomesenteroides) to grow under diverse sub-lethal technological stress conditions (cold, acidic, alkaline and osmotic) was evaluated in MRS broth. Two strains, Leuconostoc lactis Ln N6 and Leuconostoc mesenteroides Ln MB7, were selected based on their growth under sub-lethal conditions, and volatile profiles in RSM (reconstituted skim milk) at optimal and under stress conditions were analyzed. Growth rates under sub-lethal conditions were strain- and not species-dependent. Volatilomes obtained from the two strains studied were rather diverse. Particularly, Ln N6 (Ln. lactis) produced more ethanol and acetic acid than Ln MB7 (Ln. mesenteroides) and higher amounts and diversity of the rest of volatile compounds as well, at all times of incubation. For the two strains studied, most of stress conditions applied diminished the amounts of ethanol and acetic acid produced and the diversity and levels of the rest of volatile compounds. These results were consequence of the different capacity of the strains to grow under each stress condition tested"
Keywords:		Acetates/metabolism Animals Cattle Ethanol/metabolism Kinetics Leuconostoc/chemistry/classification/*growth & development/metabolism Milk/*chemistry/microbiology Volatile Organic Compounds/analysis/*metabolism Leuconostoc Starter culture Stress Volatile p;
Notes:		"MedlineCicotello, Joaquin Wolf, Irma V D'Angelo, Luisa Guglielmotti, Daniela M Quiberoni, Andrea Suarez, Viviana B eng Comparative Study England 2018/03/13 Food Microbiol. 2018 Aug; 73:362-370. doi: 10.1016/j.fm.2018.02.010. Epub 2018 Feb 14"