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Gram-positive phages: From isolation to application

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889194933 Year: Pages: 120 DOI: 10.3389/978-2-88919-493-3 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Microbiology
Added to DOAB on : 2015-11-16 15:44:59
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Phage biology is one of the most significant and fundamental aspects of biological research and is often used as a platform for model studies relating to more complex biological entities. For this reason, phage biology has enjoyed focused attention and significant advances have been made in the areas of phage genomics, transcriptomics and the development and characterisation of phage-resistance mechanisms. In recent years, considerable research has been performed to increase our understanding of the interactions of these phages with their hosts using genomic, biochemical and structural approaches. Such multidisciplinary approaches are core to developing a full understanding of the processes that govern phage infection, information that may be harnessed to develop anti-phage strategies that may be applied in food fermentations or applied in a positive sense in phage therapy applications. The co-evolutionary processes of these phages and their hosts have also been a considerable focus of research in recent years. Such data has promoted a deeper understanding of the means by which these phages attach to and infect their hosts and permitted the development of effective anti-phage strategies. Furthermore, the presence and activity of host-encoded phage-resistance systems that operate at various stages of the phage cycle and the potential for the application of such systems consolidates the value of research in this area. Conversely, phages and their components have been applied as therapeutic agents against a number of pathogens including, among others, Clostridium difficile, Lactococcus garviae, Mycobacterium spp., Listeria spp. and the possibilities and limitations of these systems will be explored in this topic. Additionally, phage therapeutic approaches have been applied to the prevention of development of food spoilage organisms in the brewing and beverage sectors and exhonorate the positive applications of phages in the industrial setting. This research topic is aimed to address the most current issues as well as the most recent advances in the research of phages infecting Gram-positive bacteria covering areas such as phages in food fermentations, their impact in industry, phage ecology, genomics, evolution, structural analysis, phage-host interactions and the application of phages and components thereof as therapeutic agents against human and animal pathogens.

Immunobiotics: Interactions of Beneficial Microbes with the Immune System

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889453825 Year: Pages: 309 DOI: 10.3389/978-2-88945-382-5 Language: English
Publisher: Frontiers Media SA
Subject: Medicine (General) --- Allergy and Immunology --- Science (General) --- Microbiology
Added to DOAB on : 2018-11-16 17:17:57
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The term “immunobiotics” has been proposed to define microbial strains able to beneficially regulate the mucosal immune system. Research in immunobiotics has significantly evolved as researchers employed cutting-edge technologies to investigate the complex interactions of these beneficial microorganisms with the immune system. During the last decade, our understanding of immunobiotics-host interaction was profoundly transformed by the discovery of microbial molecules and host receptors involved in the modulation of gut associated immune system, as well as the systemic and distant mucosal immune systems. In recent years, there has been a substantial increase in the number of reports describing the beneficial effects of immunobiotics in diseases such as intestinal and respiratory infections, allergy, inflammatory bowel disease, obesity, immunosuppression, and several other immune-mediated conditions. Evidence is also emerging of immunobiotics related molecules with immunomodulatory functions leading to the production of pharmabiotics, which may positively influence human or animal health. Therefore, research in immunobiotics continue to contribute not only to food but also medical and pharmaceutical fields. The compilation of research articles included in this ebook should help reader to have an overview of the recent advances in immunobiotics.

Bioactive Components in Fermented Foods and Food By-Products

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ISBN: 9783039288519 / 9783039288526 Year: Pages: 140 DOI: 10.3390/books978-3-03928-852-6 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Microbiology
Added to DOAB on : 2020-06-09 16:38:57
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Food fermentation is one of the most ancient processes of food production that has historically been used to extend food shelf life and to enhance its organoleptic properties. However, several studies have demonstrated that fermentation is also able to increase the nutritional value and/or digestibility of food. Firstly, microorganisms are able to produce huge amounts of secondary metabolites with excellent health benefits and preservative properties (i.e., antimicrobial activity). Secondarily, fermented foods contain living organisms that contribute to the modulation of the host physiological balance, which constitutes an opportunity to enrich the diet with new bioactive molecules. Indeed, some microorganisms can increase the levels of numerous bioactive compounds (e.g., vitamins, antioxidant compounds, peptides, etc.). Moreover, recent advances in fermentation have focused on food by-products; in fact, they are a source of potentially bioactive compounds that, after fermentation, could be used as ingredients for nutraceuticals and functional food formulations. Because of that, understanding the benefits of food fermentation is a growing field of research in nutrition and food science. This book aims to present the current knowledge and research trends concerning the use of fermentation technologies as sustainable and GRAS processes for food and nutraceutical production.

Biogenic Amines on Food Safety

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ISBN: 9783039210541 9783039210558 Year: Pages: 202 DOI: 10.3390/books978-3-03921-055-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology
Added to DOAB on : 2019-08-28 11:21:27
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Biogenic amines have been known for some time. These compounds are found in varying concentrations in a wide range of foods (fish, cheese, meat, wine, beer, vegetables, etc.) and their formations are influenced by different factors associated to those foods (composition, additives, ingredients, storage, microorganism, packaging, handing, conservation, etc.). The intake of foods containing high concentrations of biogenic amines can present a health hazard. Additionally, they have been used to establish indexes in various foods in order to signal the degree of freshness and/or deterioration of food. Nowadays, there has been an increase in the number of food poisoning episodes in consumers associated with the presence of these biogenic amines, mainly associated with histamines. Food safety is one of the main concerns of the consumer and safety agencies of different countries (EFSA, FDA, FSCJ, etc.), which have, as one of their main objectives, to control these biogenic amines, principally histamine, to assure a high level of food safety.Therefore, it is necessary to deepen our understanding of the formation, monitoring and reduction of biogenic amines during the development, processing and storage of food, even the effect of biogenic amines in consumers after digestion of foods with different levels of these compounds.With this aim, we are preparing a Special Issue on the topic of ""Biogenic Amines in Food Safety"", and we invite researchers to contribute original and unpublished research articles and reviews articles that involve studies of biogenic amines in food, which can provide an update to our knowledge of these compounds and their impacts on food quality and food safety.

Safety and Microbiological Quality

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ISBN: 9783039214914 9783039214921 Year: Pages: 126 DOI: 10.3390/books978-3-03921-492-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Microbiology
Added to DOAB on : 2019-12-09 11:49:15
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The safety and microbiological quality of fermented foods covers complementary aspects of such products. Food fermentation is primary intended to improve food preservation, thereby modifying food properties. However, the management of chemical and microbiological hazards is a leading aspect for innovative processing in this domain. Similarly, microbiological quality in fermented foods is of peculiar importance: all microorganisms with a positive effect, including probiotic bacteria, fermentative bacteria, Saccharomyces and non-Saccharomyces yeasts, can be relevant. The fitness of pro-technological microorganisms impacts nutritional quality, but also sensory properties and processing reliability. This book provides a broad view of factors which determine the safety and microbiological quality of fermented foods. A focus is made on the interconnection between starter properties and the expectations related to a probiotic effect. All chapters underline the involvement of fermented foods towards better resource management and increasing food and nutritional security, especially in developing countries.

Modern Technologies and Their Influence in Fermentation Quality

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ISBN: 9783039289479 / 9783039289486 Year: Pages: 220 DOI: 10.3390/books978-3-03928-948-6 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Nutrition and Food Sciences
Added to DOAB on : 2020-06-09 16:38:57
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During the last few years, industrial fermentation technologies have advanced in order to improve the quality of the final product. Some examples of those modern technologies are the biotechnology developments of microbial materials, such as Saccharomyces and non-Saccharomyces yeasts or lactic bacteria from different genera. Other technologies are related to the use of additives and adjuvants, such as nutrients, enzymes, fining agents, or preservatives and their management, which directly influence the quality and reduce the risks in final fermentation products. Other technologies are based on the management of thermal treatments, filtrations, pressure applications, ultrasounds, UV, and so on, which have also led to improvements in fermentation quality in recent years. The aim of the issue is to study new technologies able to improve the quality parameters of fermentation products, such as aroma, color, turbidity, acidity, or any other parameters related to improving sensory perception by the consumers. Food safety parameters are also included.

Keywords

itaconic acid --- A. terreus --- pH control --- glucose --- kinetic analysis --- Gompertz-model --- biogenic amines --- ethyl carbamate --- ochratoxin A --- sulfur dioxide --- phthalates --- HACCP --- Yeasts --- alcoholic beverages --- resveratrol --- glutathione --- trehalose --- tryptophan --- melatonin --- serotonin --- tyrosol --- tryptophol --- hydroxytyrosol --- IAA --- probiotics --- Torulaspora delbrueckii --- Lachancea thermotolerans --- Metschnikowia pulcherrima --- Schizosaccharomyces pombe --- Pichia kluyveri --- non-Saccharomyces --- biocontrol application --- non-Saccharomyces screening --- SO2 reduction --- lactic acid bacteria --- yeasts --- chemical analyses --- volatile compounds --- sensory evaluation --- shiraz --- low-ethanol wines --- sequential culture --- Hanseniaspora uvarum yeast --- aromatic/sensorial profiles --- narince --- autochthonous --- Saccharomyces cerevisiae --- aroma --- white wine --- cashew apple juice --- non-conventional yeasts --- alcoholic beverages --- aroma profile --- Hanseniaspora guilliermondii --- Torulaspora microellipsoides --- Saccharomyces cerevisiae --- meta-taxonomic analysis --- vineyard soil --- wine-related bacteria --- wine-related fungi --- sequential inoculation --- Saccharomyces --- non-Saccharomyces --- Riesling --- aroma compound --- Torulaspora delbrueckii --- Pichia kluyveri --- Lachancea thermotolerans --- Tannat --- must replacement --- hot pre-fermentative maceration --- wine color --- wine composition --- climate change --- food quality --- viticulture --- wine --- fermentation --- yeast --- Saccharomyces --- non-Saccharomyces --- alcoholic fermentation --- lactic acid bacteria --- malolactic fermentation --- native yeast --- Saccharomyces cerevisiae --- aroma --- Malvar (Vitis vinifera L. cv.) --- white wine --- yeasts --- Bombino bianco --- technological characterization --- enzymatic patterns --- amino acid decarboxylation --- Lachancea thermotolerans --- non-Saccharomyces --- Saccharomyces --- acidity --- food safety --- HACCP --- wine quality --- color --- human health-promoting compounds --- biocontrol --- wine flavor --- low ethanol wine --- Vineyard Microbiota --- wine color --- wine aroma --- climate change

Dietary Intake and Type 2 Diabetes

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ISBN: 9783039217045 9783039217052 Year: Pages: 322 DOI: 10.3390/books978-3-03921-705-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Nutrition and Food Sciences
Added to DOAB on : 2020-01-07 09:08:26
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The prevalence of diabetes is on the increase in the UK and worldwide, partly due to changes in lifestyle which predispose individuals to overweight and obesity. It is estimated that about 90% of the currently diagnosed adults have type 2 diabetes, and based on the World Health Organisation (WHO) report, about 422 million adults were living with diabetes in 2014 compared with 108 million in 1980; this condition caused about 1.5 million deaths in 2012. In the United States of America, it is estimated that about 30.3 million adults are living with diabetes, with a further 1.5 million new diabetes cases diagnosed every year, representing an increasing prevalence of this condition. Diabetes represents a major public health challenge, despite advances in technology and the pharmaceutical industry. These problems may be in the form of acute or long-term complications. Therefore, in order to attenuate the problems of diabetes, management strategies usually include lifestyle changes such as increased physical activity and dietary interventions. Studies which evaluate the role of nutrition in the management of type 2 diabetes often involve human and animal models as these approaches enable us to have a broader and more in-depth understanding of the condition. In some cases, diabetes may co-exist with other conditions, such as stroke, and these may present unique challenges with regard to nutritional interventions. This Special Issue aims to evaluate the risk factors associated with type 2 diabetes and the role of the diet in the management of people with this condition. This evidence is drawn from both human and animal studies.

Keywords

aronia --- ginseng --- mushroom --- pancreatectomy --- type 2 diabetes --- gut microbiome --- insulin secretion --- energy restricted diet --- low energy diet --- carbohydrate restricted diet --- low carbohydrate diet --- diabetes --- Japanese --- tempeh --- lactic acid bacteria --- short chain fatty acids --- metabolic syndrome --- high fat diet --- feces --- type 2 diabetes mellitus --- peanut --- almond --- glycemic control --- body mass index --- lipids --- interleukin-6 --- muscle --- insulin resistance --- free fatty acids (FFA) --- diabetes --- rosemary extract --- AMPK --- prediabetes --- type 2 diabetes --- total body fat --- total body lean --- appendicular fat --- appendicular lean --- body composition --- cohort study --- micronutrients --- trace elements --- food --- glycated hemoglobin A --- hyperglycemia --- dietary pattern --- triglyceride --- high-density lipoprotein cholesterol --- type 2 diabetes --- type 2 diabetes mellitus --- nutrition --- DASH --- diet quality --- diabetes management --- dietary intake --- longitudinal analysis --- lifestyle management --- carbohydrate counting --- protein and fat counting --- insulin dosage --- glucose monitoring --- diabetes mellitus --- type 1 diabetes --- type 2 diabetes --- Hedychium coronarium --- type 2 diabetes --- aldosterone --- streptozotocin --- metabolic syndrome --- folk medicine --- calcium intake --- dairy products --- vitamin D --- type 2 diabetes --- diabetes --- diabetes reversal --- bariatric surgery --- very-low-calorie --- low-carbohydrate --- zinc intake --- zinc status --- trace elements --- type 2 diabetes mellitus --- systematic review --- meta-analysis --- epidemiology --- PUFA --- polyunsaturated fatty acids --- glycemic control --- nuts --- fish --- fish oil --- vegetable oil --- type 2 diabetes --- vitamin D deficiency --- 25-OH-D --- women --- cardiovascular risk factors --- T2DM --- obesity --- glycaemic index --- incretins --- subjective appetite --- isomaltulose --- sucromalt --- nutritional supplement --- type 2 diabetes --- gestational diabetes --- glycemic index --- randomised controlled trial --- lipid profile --- inflammatory parameters --- diabetes specific formula --- standard formula --- type 2 diabetes --- enteral nutrition --- enteral tube feeding --- lipids --- fasting blood glucose --- glycated haemoglobin --- type 2 diabetes --- dietary intake --- glycaemic control --- dietary management approaches --- micronutrients --- macronutrients --- nutrition --- chronic conditions --- lipid parameters

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