Abstract：
:In this work, psychrotrophs known to cause food spoilage were isolated from commercial food products. Further, temperature sensitivities and volatile organic compounds of the representative strains were characterized to evaluate the population heterogeneity. A total of 490 isolates belonging to 38 genera of 20 families were identified from 30 psychrotroph-positive samples, among which Gram-negative bacteria occurred frequently. The genus Pseudomonas exhibited a clear predominance, especially Pseudomonas fragi, followed by Psychrobacter, Brochothrix, Serratia, and Stenotrophomonas, with the dominant bacteria varying with origin. Aquatic products related to Hafnia and quick-frozen food corresponding to Stenotrophomonas, as well as livestock products were shown to be good ecological niches for growth of psychrotrophs. The genus Pantoea was shown to have an intimate relationship with fruits. While in bean, cereal grain and dairy products, only Pseudomonas was present. The fits of the growth curves demonstrated good adaptability and tolerance of the tested strains under 4 °C, and multifarious growth also reflected intra-species differences and phenotypic diversity. Various kinds of esters, aromatic compounds, alcohols, and ketones were frequently detected by GC-MS. High alcohols were seen in Psychrobacter, but hydrocarbons and ethers were more often found in Pseudomonas. In particular, since high amounts of isophorone were only discovered in bacteria samples, it is speculated to be the characteristic substance of psychrotrophs.
journal_name
Int J Food Microbioljournal_title
International journal of food microbiologyauthors
Zhang Y,Wei J,Yuan Y,Yue Tdoi
10.1016/j.ijfoodmicro.2018.09.026subject
Has Abstractpub_date
2019-02-02 00:00:00pages
86-95eissn
0168-1605issn
1879-3460pii
S0168-1605(18)30733-5journal_volume
290pub_type
杂志文章abstract：:Most of the currently available screening methods for biogenic amine (BA)-producing microorganisms are based on differential media containing a pH indicator; BA production is detected as an increase in pH. However, such acid-alkaline detection methods cannot be adapted directly for use with alkaline bacteria such as B...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2011.11.008
更新日期：2012-02-15 00:00:00
abstract：:Escherichia coli O157:H7 associated with food has caused many serious public health problems in recent years. However, only viable cells of this pathogen can cause infections, and false-positive detection caused by dead cells can lead to unnecessary product recalls. The objective of this study was to develop and optim...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2013.10.026
更新日期：2014-01-17 00:00:00
abstract：:High levels of Fusarium mycotoxins HT-2 and T-2 have been detected in UK oats since surveys started in 2002. Fusarium langsethiae and the closely related species F. sporotrichioides have previously been associated with the contamination of cereals with type A trichothecenes HT-2 and T-2 in Nordic countries. Preliminar...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2012.03.020
更新日期：2012-05-15 00:00:00
abstract：:The relatively high prevalence of Listeria monocytogenes, Escherichia coli O157:H7, and Salmonella enterica serovar Typhimurium in various food products is of great concern to the food industry. The objective of this study was to determine the pressure-inactivation of the pathogens in a representative food model as af...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2011.11.016
更新日期：2012-02-01 00:00:00
abstract：:A thorough understanding of the physiological responses of microorganisms to stresses imposed during food preservation is essential if novel combination systems based on mild food processing procedures are to be developed effectively. The influences of intrinsic characteristics as well as external factors such as wate...
journal_title：International journal of food microbiology
pub_type： 杂志文章,评审
doi：10.1016/s0168-1605(99)00083-5
更新日期：1999-09-15 00:00:00
abstract：:Repeated Listeria outbreaks particularly associated with Ready-To-Eat (RTE) delicatessen meat products have been reported annually at global level. The most frequent scenario that led to foodborne outbreaks was the post-thermal treatment cross-contamination of deli meat products during slicing and modified atmosphere ...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2017.06.015
更新日期：2017-09-18 00:00:00
abstract：:The effect of enhanced proteolysis on amine formation by amino acid decarboxylase positive Lactobacillus sp. during Gouda cheese ripening was examined. A commercial proteolytic enzyme preparation was added to pasteurized milk prior to cheese preparation. The effect of this manipulation on the formation of putrescine, ...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(98)00118-4
更新日期：1998-10-20 00:00:00
abstract：:Amplified fragment length polymorphism (AFLP) analysis was performed on isolates of Penicillium commune and Penicillium palitans originating from cheese and indoor environment in four cheese factories. The AFLP method was found to be a useful tool for identification of P. commune and P. palitans on, as well as below, ...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(02)00373-2
更新日期：2003-06-15 00:00:00
abstract：:Enzymes produced by bacteria present on the surface of smear cheeses play essential roles in flavour development during cheese ripening. In this study, strains including brevibacteria, corynebacteria, staphylococci and brachybacteria, from the surface of two smear cheese (Tilsit and Gubeen) were screened for a range o...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(02)00015-6
更新日期：2002-06-25 00:00:00
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journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2018.01.018
更新日期：2018-04-20 00:00:00
abstract：:Unlike most other bacteria, many Listeria strains do not grow well in the minimal media described so far in the literature. Among the minimal media tested, a chemically defined medium modified from that of Premaratne and co-workers was found to support the best growth of Listeria spp. The promoting effect was due to t...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(96)01205-6
更新日期：1997-03-18 00:00:00
abstract：:The objective of the study was to evaluate the combined effects of pasteurization intensity (no heat treatment and 10 min at 70, 80 and 90 °C), water activity (aw) (0.960-0.990), pH (5.5-7.0) and storage temperature (7 and 10 °C) on the survival and outgrowth of psychrotolerant spores of Bacillus cereus FF119b and Bac...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2014.04.018
更新日期：2014-07-02 00:00:00
abstract：:While bacteriocins from lactic acid bacteria (LAB) have generated tremendous interest among food microbiologists, they are not unique. The biosphere is awash with antimicrobial proteins such as colicins, defensins, cecropins, and magainins. These proteins share many characteristics. They are low molecular weight, cati...
journal_title：International journal of food microbiology
pub_type： 杂志文章,评审
doi：10.1016/0168-1605(94)90106-6
更新日期：1994-12-01 00:00:00
abstract：:Nixtamalization is a traditional process that improves the nutritional quality of corn. To provide a means of utilizing the nutritional benefits of nixtamalized corn and improve product acceptability, lactic acid fermentation was applied. The objective of the study was to study the microbial profile and establish the ...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/S0168-1605(03)00114-4
更新日期：2004-10-01 00:00:00
abstract：:Two strains of Listeria monocytogenes, Scott A (serotype 4b) and Brie 1 (serotype 1b) were characterized in terms of minimum aw requirements for growth at 4 and 30 degrees C, using NaCl, glycerol and sucrose as test solutes. Both strains grew well at 30 degrees C in glycerol-supplemented tryptic soy broth (TSB), but n...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/0168-1605(91)90125-9
更新日期：1991-12-01 00:00:00
abstract：:Sourdoughs are produced both in artisanal and industrial size. Sourdough manufacturers deliver the baking branch either with starters for production of in-house sourdoughs or with fully fermented sourdough products. In the latter case sourdough production is separated in time and space from the bread production. A big...
journal_title：International journal of food microbiology
pub_type：
doi：10.1016/j.ijfoodmicro.2018.09.008
更新日期：2019-08-02 00:00:00
abstract：:In 2006 and 2007, 32 Thai dried coffee bean samples (Coffea arabica) from two growing sites of Chiang Mai Province, and 32 Thai dried coffee bean samples (Coffea canephora var. robusta) from two growing sites of Chumphon Province, Thailand, were collected and assessed for the distribution of fungi with the potential t...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2008.08.005
更新日期：2008-12-10 00:00:00
abstract：:During wine fermentation, yeasts produce metabolites that are known growth regulators. The relationship between certain higher alcohols derived from aromatic amino acid metabolism and yeast signalling has previously been reported. In the present work, tryptophol (TrpOH) or melatonin (MEL), which are putative growth re...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2018.09.013
更新日期：2019-01-16 00:00:00
abstract：:This study aimed to track Yersinia enterocolitica contamination in a pork production chain in Minas Gerais, Brazil, and to characterize the virulence and antibiotic resistance of isolates. Samples were collected from four different steps of the pork production chain (pig farm, carcass, processing environment and end p...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2018.03.028
更新日期：2018-07-02 00:00:00
abstract：:The aim of this study was to identify a potential surrogate to describe the radiation sensitivity of the most common pathogens encountered in fruits. Three pathogens: Escherichia coli O157:H7 933, Listeria monocytogenes ATCC 51414, and Salmonella Poona, and five non-pathogens: E. coli K-12 MG1655, Listeria innocua See...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2006.01.041
更新日期：2006-07-15 00:00:00
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journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2005.05.006
更新日期：2005-11-15 00:00:00
abstract：:International trade in food products has expanded rapidly in recent years. This paper presents economic approaches for analyzing the effects on trade in food products of the food safety requirements of governments and private buyers. Important economic incentives for companies to provide improved food safety arise fro...
journal_title：International journal of food microbiology
pub_type： 杂志文章,评审
doi：10.1016/s0168-1605(00)00346-9
更新日期：2000-12-20 00:00:00
abstract：:The inactivation of Lb. rhamnosus by pulsed electric field treatment (PEF) was studied in different fractions of raw milk and Ringer solution in order to evaluate the protective effect of nutrient rich media in comparison to aqueous buffer solutions. Apart from monitoring of culturability, analysis of the physiologica...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2009.06.007
更新日期：2009-08-31 00:00:00
abstract：:The aim of this work was to develop antimicrobial photosensitizer-containing edible films and coatings based on gelatin as the polymer matrix, incorporating sodium magnesium chlorophyllin (E-140) and sodium copper chlorophyllin (E-141). Chlorophyllins were incorporated into the gelatin film-forming solution and the in...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2008.05.002
更新日期：2008-08-15 00:00:00
abstract：:Probiotics are commonly included in dairy products. These products require cold storage and transportation, which limits their use. Here, we describe the inclusion of the probiotic strain Bifidobacterium lactis Bb-12 in a dry food matrix, an oat-based cereal bar, and its detection in faeces after consumption of this p...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2004.03.015
更新日期：2004-08-15 00:00:00
abstract：:Salmonella is the causative agent of many outbreaks related to spice consumption. However, because of the antimicrobial properties of various spices which hinders recovery and detection, Salmonella detection in spices remains a challenge. The objective of this study was to optimize an enrichment broth for Salmonella g...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2019.108440
更新日期：2020-03-02 00:00:00
abstract：:Gaseous ClO2 was evaluated for effectiveness in prolonging the shelf-life of minimally processed (MP) lettuce and MP cabbage, previously immersed in a cysteine solution in order to inhibit browning occurring during ClO2 treatment. Each vegetable was shredded, washed, and separated in two portions, one to be treated wi...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2007.11.036
更新日期：2008-01-15 00:00:00
abstract：:Cell-to-cell communications in bacteria mediated by small diffusible molecules termed as autoinducers (AI) are known to influence gene expression and pathogenicity. Oligopeptides and N-acylhomoserine lactones (AHL) are major AI molecules involved in intra-specific communication in gram-positive and gram-negative bacte...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2008.03.028
更新日期：2008-07-15 00:00:00
abstract：:The kinetics of destruction of Listeria monocytogenes Scott A in semi-skim milk heated at 55, 58, 60 and 62°C without and with addition of 900, 1400 and 1800 ppm of vanillin was studied. Survival curves displayed an initial shoulder phase followed by an accelerating killing phase. Addition of vanillin to semi-skim mil...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/j.ijfoodmicro.2012.05.003
更新日期：2012-07-02 00:00:00
abstract：:In the Principality of Asturias (PA), Spain. three Salmonella serovar Panama outbreaks were registered in August 1998. In order to achieve an accurate identification of the strains implicated in the outbreaks and to study the molecular epidemiology of this serovar in the PA, the isolates collected over 1990-1999 were ...
journal_title：International journal of food microbiology
pub_type： 杂志文章
doi：10.1016/s0168-1605(01)00553-0
更新日期：2001-12-04 00:00:00
