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Food microbiology advancements

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https://www.readbyqxmd.com/read/28959937/genome-editing-of-food-grade-lactobacilli-to-develop-therapeutic-probiotics
#1
Jan-Peter van Pijkeren, Rodolphe Barrangou
Lactic acid bacteria have been used historically for food manufacturing mainly to ensure preservation via fermentation. More recently, lactic acid bacteria have been exploited to promote human health, and many strains serve as industrial workhorses. Recent advances in microbiology and molecular biology have contributed to understanding the genetic basis of many of their functional attributes. These include dissection of biochemical processes that drive food fermentation, and identification and characterization of health-promoting features that positively impact the composition and roles of microbiomes in human health...
September 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28782997/pathogen-decontamination-of-food-crop-soil-a-review
#2
REVIEW
Joshua B Gurtler
The purpose of this review is to delineate means of decontaminating soil. This information might be used to mitigate soil-associated risks of foodborne pathogens. The majority of the research in the published literature involves inactivation of plant pathogens in soil, i.e., those pathogens harmful to fruit and vegetable production and ornamental plants. Very little has been published regarding the inactivation of foodborne human pathogens in crop soil. Nevertheless, because decontamination techniques for plant pathogens might also be useful methods for eliminating foodborne pathogens, this review also includes inactivation of plant pathogens, with appropriate discussion and comparisons, in the hopes that these methods may one day be validated against foodborne pathogens...
September 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28725217/metagenomics-the-next-culture-independent-game-changer
#3
REVIEW
Jessica D Forbes, Natalie C Knox, Jennifer Ronholm, Franco Pagotto, Aleisha Reimer
A trend towards the abandonment of obtaining pure culture isolates in frontline laboratories is at a crossroads with the ability of public health agencies to perform their basic mandate of foodborne disease surveillance and response. The implementation of culture-independent diagnostic tests (CIDTs) including nucleic acid and antigen-based assays for acute gastroenteritis is leaving public health agencies without laboratory evidence to link clinical cases to each other and to food or environmental substances...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28693949/composting-of-food-wastes-status-and-challenges
#4
REVIEW
Alejandra Cerda, Adriana Artola, Xavier Font, Raquel Barrena, Teresa Gea, Antoni Sánchez
This review analyses the main challenges of the process of food waste composting and examines the crucial aspects related to the quality of the produced compost. Although recent advances have been made in crucial aspects of the process, such composting microbiology, improvements are needed in process monitoring. Therefore, specific problems related to food waste composting, such as the presence of impurities, are thoroughly analysed in this study. In addition, environmental impacts related to food waste composting, such as emissions of greenhouse gases and odours, are discussed...
June 26, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28589386/navigating-the-jungles-of-tropical-infectious-gastrointestinal-pathology-a-pattern-based-approach-to-the-endoscopic-biopsy
#5
Tomas Slavik, Gregory Y Lauwers
International travels and global human migration have had the unforeseen consequence of increasing the exposure of histopathologists in developed countries to the pathology of tropical infectious disease. The gastrointestinal tract (GIT) is often the primary site of infection due to the faecal-oral route of transmission and the high risk of exposure to contaminated water, food or soil when travelling to these regions. Whilst current microbiologic techniques are far more sensitive than histology in detecting infectious pathogens, the histopathologist nonetheless retains a pivotal role in diagnosing tropical GIT disease...
June 6, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28355995/new-advances-in-infant-feeding-new-products-and-novel-technologies
#6
M C Pina-Pérez, A Martínez, D Rodrigo
BACKGROUND: Breastfeeding is the best way to provide ideal food for infants. However, there are many situations in which breastfeeding is unviable (maternal illness, hygiene problems, intravenous feeding requirement, storage). Safe, efficient, and nutritious products should be offered by the industry to mothers and healthcare professionals as an alternative. OBJECTIVE: The present review aims to update the state of the art regarding the most innovative developments in infant feeding formulation and, the promising novel technologies that are being investigated to achieve a balance between the microbiological stability, organoleptic and nutritional value of babyfood...
March 28, 2017: Recent Patents on Food, Nutrition & Agriculture
https://www.readbyqxmd.com/read/28245092/microbiological-interactions-with-cold-plasma
#7
REVIEW
P Bourke, D Ziuzina, L Han, P J Cullen, B F Gilmore
There is a diverse range of microbiological challenges facing the food, healthcare and clinical sectors. The increasing and pervasive resistance to broad-spectrum antibiotics and health-related concerns with many biocidal agents drives research for novel and complementary antimicrobial approaches. Biofilms display increased mechanical and antimicrobial stability and are the subject of extensive research. Cold plasmas (CP) have rapidly evolved as a technology for microbial decontamination, wound healing and cancer treatment, owing to the chemical and bio-active radicals generated known collectively as reactive oxygen and nitrogen species...
February 28, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28197144/detection-and-enumeration-of-spore-forming-bacteria-in-powdered-dairy-products
#8
REVIEW
Aoife J McHugh, Conor Feehily, Colin Hill, Paul D Cotter
With the abolition of milk quotas in the European Union in 2015, several member states including Ireland, Luxembourg, and Belgium have seen year on year bi-monthly milk deliveries to dairies increase by up to 35%. Milk production has also increased outside of Europe in the past number of years. Unsurprisingly, there has been a corresponding increased focus on the production of dried milk products for improved shelf life. These powders are used in a wide variety of products, including confectionery, infant formula, sports dietary supplements and supplements for health recovery...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27941657/australian-food-safety-policy-changes-from-a-command-and-control-to-an-outcomes-based-approach-reflection-on-the-effectiveness-of-its-implementation
#9
James Smith, Kirstin Ross, Harriet Whiley
Foodborne illness is a global public health burden. Over the past decade in Australia, despite advances in microbiological detection and control methods, there has been an increase in the incidence of foodborne illness. Therefore improvements in the regulation and implementation of food safety policy are crucial for protecting public health. In 2000, Australia established a national food safety regulatory system, which included the adoption of a mandatory set of food safety standards. These were in line with international standards and moved away from a "command and control" regulatory approach to an "outcomes-based" approach using risk assessment...
December 8, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27940240/advances-in-biosensor-development-for-the-screening-of-antibiotic-residues-in-food-products-of-animal-origin-a-comprehensive-review
#10
REVIEW
Valérie Gaudin
Antibiotic residues may be found in food of animal origin, since veterinary drugs are used for preventive and curative purposes to treat animals. The control of veterinary drug residues in food is necessary to ensure consumer safety. Screening methods are the first step in the control of antibiotic residues in food of animal origin. Conventional screening methods are based on different technologies, microbiological methods, immunological methods or physico-chemical methods (e.g. thin-layer chromatography, HPLC, LC-MS/MS)...
April 15, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27822524/from-sample-to-multi-omics-conclusions-in-under-48-hours
#11
Robert A Quinn, Jose A Navas-Molina, Embriette R Hyde, Se Jin Song, Yoshiki Vázquez-Baeza, Greg Humphrey, James Gaffney, Jeremiah J Minich, Alexey V Melnik, Jakob Herschend, Jeff DeReus, Austin Durant, Rachel J Dutton, Mahdieh Khosroheidari, Clifford Green, Ricardo da Silva, Pieter C Dorrestein, Rob Knight
Multi-omics methods have greatly advanced our understanding of the biological organism and its microbial associates. However, they are not routinely used in clinical or industrial applications, due to the length of time required to generate and analyze omics data. Here, we applied a novel integrated omics pipeline for the analysis of human and environmental samples in under 48 h. Human subjects that ferment their own foods provided swab samples from skin, feces, oral cavity, fermented foods, and household surfaces to assess the impact of home food fermentation on their microbial and chemical ecology...
March 2016: MSystems
https://www.readbyqxmd.com/read/27766214/an-overview-on-novel-microbial-determination-methods-in-pharmaceutical-and-food-quality-control
#12
Mahboob Nemati, Aliasghar Hamidi, Solmaz Maleki Dizaj, Vahid Javaherzadeh, Farzaneh Lotfipour
Traditional microbiological methods tend to be labor-intensive and time-consuming. Rapid and novel methods in microbiological tests provide more sensitive, precise and reproducible results compared with conventional methods. In microbiology, the most rapid testing methods belong to the field of biotechnology such as PCR, ELISA, ATP bioluminescence and etc. Nevertheless impedance microbiology, biosensors and analytical procedures to determine microbial constituents are of significance. The present review article was conducted using internet databases and related scientific literatures and articles that provide information on developments in the rapid methods in microbiology...
September 2016: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27741154/an-advanced-in-vitro-technology-platform-to-study-the-mechanism-of-action-of-prebiotics-and-probiotics-in-the-gastrointestinal-tract
#13
Massimo Marzorati, Tom Van de Wiele
The gastrointestinal tract (GIT) hosts the most complex microbial community in the human body. Given the extensive metabolic potential which is present in this community, this additional organ is of key importance to maintain a healthy status and several diseases are frequently correlated with an alteration of the composition/functionality of the gut microbiota. Consequently, there is a great interest in identifying potential approaches that could modulate the microbiota and its metabolism to bring about a positive health effect...
November 2016: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/27713962/dietary-supplement-based-on-stilbenes-a-focus-on-gut-microbial-metabolism-by-the-in-vitro-simulator-m-shime%C3%A2
#14
Camilla Giuliani, Massimo Marzorati, Marzia Innocenti, Ramiro Vilchez-Vargas, Marius Vital, Dietmar H Pieper, Tom Van de Wiele, Nadia Mulinacci
Polyphenols and intestinal microbiota can influence each other, modifying metabolism and gut wellness. Data on this mutual effect need to be improved. Several studies on the biological activities of resveratrol and derivatives have been carried out, but the effects of a continuous administration of stilbenes on gut microbiota have not yet been investigated. This study evaluated the effects of an extract from Vitis vinifera, containing a combination of t-resveratrol and ε-viniferin, on intestinal microbiota, using the advanced gastrointestinal simulator M-SHIME®...
November 9, 2016: Food & Function
https://www.readbyqxmd.com/read/27639140/recent-trends-in-the-determination-of-biogenic-amines-in-fermented-beverages-a-review
#15
REVIEW
José Luis Ordóñez, Ana Maria Troncoso, Maria Del Carmen García-Parrilla, Raquel Maria Callejón
Biogenic amines (BA) are generally considered as a food hazard, even though there is not a threshold for these biomolecules in the European legislation, except for histamine in fishery products. These compounds are formed during the storage and processing of certain foods through microbiological activity, and when present in high concentrations, could have toxicological effects, causing health problems in consumers, especially to sensitive persons. This fact, in addition to the economical concern involved, makes it necessary to control the amounts of biogenic amines in foods...
October 5, 2016: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27596399/use-of-spent-coffee-grounds-as-food-ingredient-in-bakery-products
#16
Nuria Martinez-Saez, Alba Tamargo García, Inés Domínguez Pérez, Miguel Rebollo-Hernanz, Marta Mesías, Francisco J Morales, María A Martín-Cabrejas, Maria Dolores Del Castillo
The present research aimed to evaluate the use of spent coffee grounds (SCG) from instant coffee as a food ingredient and its application in bakery products. Data on physicochemical characterization, thermal stability and food safety of SCG were acquired. Evaluation of feasibility as dietary fibre was also determined. Results showed SCG are natural source of antioxidant insoluble fibre, essential amino acids, low glycaemic sugars, resistant to thermal food processing and digestion process, and totally safe...
February 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27551279/recent-advances-on-multi-parameter-flow-cytometry-to-characterize-antimicrobial-treatments
#17
REVIEW
Lucie Léonard, Lynda Bouarab Chibane, Balkis Ouled Bouhedda, Pascal Degraeve, Nadia Oulahal
The investigation on antimicrobial mechanisms is a challenging and crucial issue in the fields of food or clinical microbiology, as it constitutes a prerequisite to the development of new antimicrobial processes or compounds, as well as to anticipate phenomenon of microbial resistance. Nowadays it is accepted that a cells population exposed to a stress can cause the appearance of different cell populations and in particular sub-lethally compromised cells which could be defined as viable but non-culturable (VBNC)...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27412586/individual-cell-heterogeneity-in-predictive-food-microbiology-challenges-in-predicting-a-noisy-world
#18
REVIEW
Konstantinos P Koutsoumanis, Zafiro Aspridou
Gene expression is a fundamentally noisy process giving rise to a significant cell to cell variability at the phenotype level. The phenotypic noise is manifested in a wide range of microbial traits. Heterogeneous behavior of individual cells is observed at the growth, survival and inactivation responses and should be taken into account in the context of Predictive Food Microbiology (PMF). Recent methodological advances can be employed for the study and modeling of single cell dynamics leading to a new generation of mechanistic models which can provide insight into the link between phenotype, gene-expression, protein and metabolic functional units at the single cell level...
January 2, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/27357041/food-safety-practices-in-the-egg-products-industry
#19
Catherine L Viator, Sheryl C Cates, Shawn A Karns, Mary K Muth, Gary Noyes
We conducted a national census survey of egg product plants (n = 57) to obtain information on the technological and food safety practices of the egg products industry and to assess changes in these practices from 2004 to 2014. The questionnaire asked about operational and sanitation practices, microbiological testing practices, food safety training for employees, other food safety issues, and plant characteristics. The findings suggest that improvements were made in the industry's use of food safety technologies and practices between 2004 and 2014...
July 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/27321680/genetically-modified-bacteriophages-in-applied-microbiology
#20
REVIEW
P Bárdy, R Pantůček, M Benešík, J Doškař
Bacteriophages represent a simple viral model of basic research with many possibilities for practical application. Due to their ability to infect and kill bacteria, their potential in the treatment of bacterial infection has been examined since their discovery. With advances in molecular biology and gene engineering, the phage application spectrum has been expanded to various medical and biotechnological fields. The construction of bacteriophages with an extended host range or longer viability in the mammalian bloodstream enhances their potential as an alternative to conventional antibiotic treatment...
September 2016: Journal of Applied Microbiology
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