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Int J Food Microbiol

Title:		Seasonal variances in bacterial microbiota and volatile organic compounds in raw milk
Author(s):		Nalepa B; Olszewska MA; Markiewicz LH;
Address:		"Department of Industrial and Food Microbiology, Faculty of Food Science, University of Warmia and Mazury in Olsztyn, pl. Cieszynski 1, 10-726 Olsztyn, Poland. Electronic address: beata.nalepa@uwm.edu.pl. Department of Industrial and Food Microbiology, Faculty of Food Science, University of Warmia and Mazury in Olsztyn, pl. Cieszynski 1, 10-726 Olsztyn, Poland. Department of Immunology and Food Microbiology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, ul. Tuwima 10, 10-748 Olsztyn, Poland"
Journal Title:		Int J Food Microbiol
Year:		2018
Volume:		20171224
Issue:
Page Number:		70 - 76
DOI:		10.1016/j.ijfoodmicro.2017.12.024
ISSN/ISBN:		1879-3460 (Electronic) 0168-1605 (Linking)
Abstract:		"The aim of this study was to define the composition of microbiota and the volatile organic compounds (VOCs) in samples of raw milk collected for 22 months between 2012 and 2014 originated from north-eastern region of Poland. The results revealed that the VOCs profile changed with respect to the season of milk collection, and milk collected in autumn was characterized by a higher content of acetic acid (C2), propionic acid (C3) and valeric acid (C5), whereas spring was characterized by a frequent presence of acetone (Ac), ethanol (Et) and ethyl acetate (EtAc). Bacterial species composition changed considerably within the tested period and some bacterial species/groups occurred seasonally, e.g. L. helveticus (summer), L. casei (winter). The results show usefulness of the applied techniques (PCR-DGGE and HS-GC) and data analysis (PCA, correlation coefficients) methods in characterizing the raw milk quality intended for dairy production"
Keywords:		Animals *Biodiversity Food Analysis Microbiota/genetics/*physiology Milk/*chemistry/*microbiology Poland *Seasons Volatile Organic Compounds/*analysis Hs-gc Microbiota Pcr-dgge Raw milk Seasonal variation VOCs;
Notes:		"MedlineNalepa, Beata Olszewska, Magdalena Anna Markiewicz, Lidia Hanna eng Netherlands 2018/01/07 Int J Food Microbiol. 2018 Feb 21; 267:70-76. doi: 10.1016/j.ijfoodmicro.2017.12.024. Epub 2017 Dec 24"