Abstract:
:Cereals are staple foods in most African countries, and many African cereal-based foods are spontaneously fermented. The nutritional quality of cereal products can be enhanced through fermentation, and traditional cereal-based fermented foods (CBFFs) are possible sources of lactic acid bacteria (LAB) with useful nutritional properties. The nutritional properties of LAB vary depending on the species and even on the strain, and the microbial composition of traditional CBFFs varies from one traditional production unit (TPU) to another. The nutritional quality of traditional CBFFs may thus vary depending on their microbial composition. As the isolation of potentially useful LAB from traditional CBFFs can be very time consuming, the aim of this study was to use PCR to assess the nutritional potential of LAB directly on the metagenomes of pearl-millet based fermented porridges (ben-saalga) from Burkina Faso. Genes encoding enzymes involved in different nutritional activities were screened in 50 metagenomes extracted from samples collected in 10 TPUs in Ouagadougou. The variability of the genetic potential was recorded. Certain genes were never detected in the metagenomes (genes involved in carotenoid synthesis) while others were frequently detected (genes involved in folate and riboflavin production, starch hydrolysis, polyphenol degradation). Highly variable microbial composition - assessed by real-time PCR - was observed among samples collected in different TPUs, but also among samples from the same TPU. The high frequency of the presence of genes did not necessarily correlate with in situ measurements of the expected products. Indeed, no significant correlation was found between the microbial variability and the variability of the genetic potential. In spite of the high rate of detection (80%) of both genes folP and folK, encoding enzymes involved in folate synthesis, the folate content in ben-saalga was rather low (median: 0.5μg/100g fresh weight basis). This work highlighted the limit of evaluating the nutritional potential of the microbiota of traditional fermented foods by the only screening of genes in metagenomes, and suggests that such a screening should be completed by a functional analysis.
journal_name
Int J Food Microbioljournal_title
International journal of food microbiologyauthors
Saubade F,Humblot C,Hemery YM,Guyot JPdoi
10.1016/j.ijfoodmicro.2016.12.020subject
Has Abstractpub_date
2017-03-06 00:00:00pages
103-110eissn
0168-1605issn
1879-3460pii
S0168-1605(16)30668-7journal_volume
244pub_type
杂志文章abstract::The impact of salt and fat intake on human health drives the consumer's attention towards dairy food with reduced salt and fat contents. How changes in salt and fat content modulate dairy LAB population and the associated proteolytic activities have been poorly studied. Here, non-starter LAB populations from 12 Parmig...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2020.108688
更新日期:2020-10-02 00:00:00
abstract::Realistic prediction of microbial inactivation in food requires quantitative information on variability introduced by the microorganisms. Bacillus subtilis forms heat resistant spores and in this study the impact of strain variability on spore heat resistance was quantified using 20 strains. In addition, experimental ...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2017.04.014
更新日期:2017-07-17 00:00:00
abstract::The biological control of beef spoilage, with a bacteriophage (phage) pool, was evaluated under simulated retail conditions. A pool of seven phages was selected with the potential to lyse 78% of 86 Pseudomonas test strains. Subsequent host range studies with 1023 pseudomonads from three meat species (beef, pork, lamb)...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/0168-1605(90)90080-o
更新日期:1990-05-01 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
abstract::The production of fermented meats, such as fermented sausage, relies on the metabolic activities of lactic acid bacteria and catalase-positive cocci, in particular the group of coagulase-negative staphylococci (CNS). Conventional use of CNS as meat starter cultures usually leads to an appropriate cured colour developm...
journal_title:International journal of food microbiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijfoodmicro.2016.05.021
更新日期:2017-04-17 00:00:00
abstract::Pulsed electric fields (PEF) is an emerging nonthermal processing technology used to inactivate microorganisms in liquid foods such as milk. PEF results in loss of cell membrane functionality that leads to inactivation of the microorganism. There are many processes that aid in the stability and safety of foods. The co...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/s0168-1605(99)00069-0
更新日期:1999-10-01 00:00:00
abstract::Mathematical models for growth, heat inactivation and histamine formation by Morganella psychrotolerans and Morganella morganii were studied to evaluate the importance of these bacteria in seafood. Curves for growth and histamine formation by M. psychrotolerans in broth and seafood were generated at constant and chang...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2008.08.015
更新日期:2008-12-10 00:00:00
abstract::Gliadin films cross-linked with cinnamaldehyde (1.5, 3, and 5%) and incorporated with natamycin (0.5%) were prepared by casting, and their antifungal activity, water resistance, and barrier properties were characterized. Incorporation of natamycin gave rise to films with greater water uptake, weight loss and diameter ...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2013.12.013
更新日期:2014-03-03 00:00:00
abstract::The performance of hazard analyses and the establishment of critical limits by the food industry are both hampered by the inability to directly relate food processing operations from farm-to-table with their public health impact. Using a 'unit operations' and stochastic simulation approach, data on the frequency of pa...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/s0168-1605(97)01262-2
更新日期:1997-05-20 00:00:00
abstract::Work examines the origin of bactericidal activity in mustard flour and explores the relative contribution from starter cultures, E. coli O157:H7 itself and other sources. Bacteria can degrade naturally occurring glucosinolates in mustard and form isothiocyanates with antimicrobial activity. In the present work, 24 sta...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2010.11.028
更新日期:2011-01-31 00:00:00
abstract::Lancefield group D-streptococci are contaminants of various food commodities, especially those of animal origin. They encompass the new genus Enterococcus comprising 13 known species and some species of streptococci which have their habitat in the intestine of animals, e.g. Streptococcus bovis, suis and equinus. The s...
journal_title:International journal of food microbiology
pub_type: 杂志文章,评审
doi:10.1016/0168-1605(92)90109-g
更新日期:1992-10-01 00:00:00
abstract::The aim of this study was to characterize a collection of 44 Shiga toxin-producing (STEC) and enteropathogenic Escherichia coli (EPEC) isolated from goat milk and goat farm environment. Of the 19 STEC isolates, five (26.3%) carried the stx1 gene, four (21.1%) the stx2 gene and 10 (52.6%) presented both stx genes. Six ...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2016.07.035
更新日期:2016-11-07 00:00:00
abstract::The kinetic parameters of thermal inactivation of a spore former, Alicyclobacillus acidoterrestris, in a tropical fruit nectar [25% of Cupuaçu (Theobroma grandiflorum) pulp and 15% sugar] were determined by the isothermal method (IM), under batch heating, and by the paired equivalent isothermal exposures (PEIE) method...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/s0168-1605(02)00043-0
更新日期:2002-07-25 00:00:00
abstract::A collaborative study involving four European laboratories was conducted to investigate the diagnostic accuracy of a Salmonella specific PCR-based method, which was evaluated within the European FOOD-PCR project (http://www.pcr.dk). Each laboratory analysed by the PCR a set of independent obtained presumably naturally...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/s0168-1605(03)00154-5
更新日期:2003-12-31 00:00:00
abstract::Consumption of minimally-processed, or fresh-cut, fruit and vegetables has rapidly increased in recent years, but there have also been several reported outbreaks associated with the consumption of these products. Sodium hypochlorite is currently the most widespread disinfectant used by fresh-cut industries. Neutral el...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2007.12.008
更新日期:2008-03-31 00:00:00
abstract::The presence of Escherichia coli O157:H7 in various foods of animal origin was surveyed in northwestern Greece. Six hundred samples of unpasteurized cows', ewes' and goats' milk, raw minced meat, uncooked frozen beef hamburgers, sandwiches (containing ham or turkey, mixed vegetable salad with mayonnaise and lettuce), ...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/s0168-1605(02)00313-6
更新日期:2003-05-15 00:00:00
abstract::Salmonellosis is a common subclinical infection in pigs and therefore apparently healthy animals may represent a reservoir of antibiotic-resistant Salmonella for humans. This study estimates and characterizes resistance to two classes of antimicrobials considered of the highest priority within the critically important...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2020.108967
更新日期:2021-01-02 00:00:00
abstract::The aim of the study was to investigate the potential spread of the previously described multidrug-resistant (MDR) Hungarian clone of Salmonella Infantis of broiler origin in Europe. Therefore, 76 strains isolated between 2004 and 2009 from raw meat and fecal samples of broiler origin in nine European countries - incl...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2012.04.007
更新日期:2012-06-15 00:00:00
abstract::Cyanogenic food crops abound in nature with important crops like cassava forming the staple food for over half a billion people. Detoxification by hydrolysis of cassava cyanogenic glycosides often involves acid fermentation, and in some of these processes Bacillus species are encountered. Forty Bacillus spp. (20 Bacil...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2012.11.019
更新日期:2013-01-15 00:00:00
abstract::Saccharomyces cerevisiae is generally considered to be a safe organism and is essential to produce many different kinds of foods as well as being widely used as a dietary supplement. However, several isolates, which are genetically related to brewing and baking yeasts, have shown virulent traits, being able to produce...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2012.04.012
更新日期:2012-06-15 00:00:00
abstract::Human noroviruses (NoV) are major agents of foodborne outbreaks. Because of the lack of a standardized cell culture method, real-time reverse transcriptase PCR is now commonly used for the detection of NoV in foodstuffs and environmental samples. However, this approach detects the viral nucleic acids of both infectiou...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2018.01.015
更新日期:2018-03-23 00:00:00
abstract::The potential impact of aromatic and pectinolytic yeasts on cocoa flavour was investigated using two defined mixed starter cultures encompassing strains of Pichia kluyveri and Kluyveromyces marxianus for inoculating cocoa beans in small scale tray fermentations. Samples for microbial and metabolite analysis were colle...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2013.06.024
更新日期:2013-10-01 00:00:00
abstract::The formation of B-vitamins (nicotinic acid and nicotinamide, thiamine, vitamin B6 and vitamin B12) during the soaking of soybeans by bacteria, isolated from tempe, was investigated. Among the isolates examined no vitamin B6 producer was found. After inoculation of the soaking soybeans with Citrobacter freundii, Klebs...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/0168-1605(94)90004-3
更新日期:1994-04-01 00:00:00
abstract::Production of ochratoxin on media by eight isolates of Aspergillus ochraceus from coffee or its processing environment in India, Indonesia, Kenya, and Brazil, and seven Brazilian isolates from other commodities, has been compared with yields in shaken fermentation on shredded wheat and coffee (Coffea arabica). Shredde...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/s0168-1605(00)00278-6
更新日期:2000-05-25 00:00:00
abstract::Kits designed to detect ochratoxin A (OA) and T-2 toxin by a membrane-based flow-through enzyme immunoassay were studied collaboratively by screening cereals (wheat, rye, maize and barley) for the presence of these mycotoxins. Sample preparation and test procedure were clearly described in the instruction leaflets inc...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/s0168-1605(01)00749-8
更新日期:2002-05-05 00:00:00
abstract::Irradiation penetrates food tissues and effectively reduces the number of food microorganisms in fresh produce, but the efficacy of the process against internalized bacteria is unknown. The objective of this study was to understand the mechanisms of pathogen colonization of plants relative to lettuce leaf structures s...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2009.08.026
更新日期:2009-11-15 00:00:00
abstract::The direct viable count (DVC), a microscopic method for the enumeration of viable bacteria, was modified by replacing nalidixic acid with ciprofloxacin. This modification made it possible to apply this method to a variety of Gram-negative and Gram-positive bacteria which was not previously possible. Of the four antibi...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/0168-1605(93)90167-f
更新日期:1993-12-01 00:00:00
abstract::Salmonella senftenberg was detected in association with persistent contamination events in mussel processing facilities between 1998 and 2002 in Spain. A total of 110 isolates from 8 facilities were subjected to molecular typing by Pulsed-Field Gel Electrophoresis (PFGE). Additionally, a selection of epidemiologically...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2005.04.006
更新日期:2005-11-25 00:00:00
abstract::Helicobacter pylori is a Gram-negative microaerophilic bacterium that has colonized the human gastric mucosa. This infection is very common and affects more than half of the human population. The prevalence is however unbalanced between rural developing areas (more than 80%) and urban developed areas (less than 40%). ...
journal_title:International journal of food microbiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijfoodmicro.2010.01.016
更新日期:2010-03-31 00:00:00
abstract::An antibody ELISA test and a PCR method for identifying the risk of Salmonella contamination were compared in a field study on the same lots of animals in a slaughterhouse. The results were compared to investigations carried out on two farms with different prevalences of Salmonella antibody-positive animals. Salmonell...
journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2006.10.045
更新日期:2007-04-20 00:00:00