Генетика. Микробиология

Gianluca Busia and Rina Mazzette

Цена: 7653.00 р.

Healthy sheep carry shiga-like toxin-producing Escherichia coli (STEC) at similar rates to cattle but examples of disease-associated E. coli in sheep are rare and none refers. A study of pathogenic Escherichia coli in Sarda sheep at slaughter, on carcasses, fleeces, gut and faeces was performed. Nineteen sampling sessions were carried out in industrial capacity slaughterhouses. The aim of the present study was to evaluate the role of the sheep as STEC reservoir and to detect the prevalent serogroups over the sheep chain production. In order to make a preliminary screening of STEC in collected samples, a simplex PCR was performed on all the specimens. Virulence profile characterization of the isolates showed a significant level of STEC strains (22.6%) and a higher number of EPEC (53.8%). Furthermore, virulence accessory factors are widely detected, assigning an additional pathogenic capacity to the strains, and very complex virulence profiles. Serotyping assays...
Ana Henriques

The antibacterial activity of honey
Цена: 6587.00 р.

Honey is an old remedy recently rediscovered as a possible alternative to modern antibiotics in wound management but its mode of action is not fully understood. The antibacterial activity of honey can be divided into hydrogen peroxide and non-hydrogen peroxide-derived activity. This later type of activity is characteristic of honeys from Australasia (e.g. manuka honey) and preferred for wound management, although historically local honeys have been used. The main aim of this study was to investigate the mechanisms of antibacterial action of manuka honey, but also other local honeys. This work shows that the non-peroxide activity is also found in local honeys and that the antibacterial activity of honey on wound infecting microoganisms is distinct in terms of targets of activity. For Gram negative it seems to act by physically disrupting the cell wall, whilst for Gram positive is appears to have physiological effect on cellular processes such as cytokinesis. By the end it was possible...

Phosphate Solubilizing Microbes: Functional Aspects
Цена: 4747.00 р.

Globally, most agronomic soils contain huge reserves of phosphorus, but the fixation and precipitation, cause a major deficiency of Phosphorus in soil, and in turn, hamper the growth of crops seriously. How to improve phosphorus fertilizer efficiency and utilize the potential nutrient in soil has therefore, long been a major concern for field practitioners. This has led to a search for eco-friendly and economically attractive alternative technology for improving crop production in low or even P deficient soils. In this context, natural soil inhabitants endowed with P-solubilizing activity, often termed phosphate-solubilizing microorganisms [PSM], provides a viable substitute to chemical P fertilizers. Inoculation of phosphate-solubilizing microorganisms, like, bacteria and fungi in soil has been shown to immensely affect the growth of plants by making not only P available to plants but also facilitate the growth of plants by other mechanisms leading to higher crop yields.
Vikash Kandari

Biochemical Degradation of lignocellulosic waste in bioethanol
Цена: 4747.00 р.

The rising cost of fuel oil compelled the industry to search for alternative fuels and biomass and hence the production of fermentable sugars from renewable lignocellulosic waste materials, which can be used as feedstock for the production of biofuel, organic acid and animal feed. (Arunachalam,2007).Ethanol is a high octane, water free alcohol produced from renewable resources like rice husk, wheat straw, corn, wood and other biomaterials. Ethanol is most often blended with gasoline – usually as a 10 per cent mix – to create a fuel called gasohol. Ethanol blended fuels like gasohol, act as natural antifreeze, and appear to burn more efficiently in combustion engines. As well, ethanol is used commercially in producing food grade vinegar, food extracts, pharmaceutical products.In the last decade, most research has tended to focus on developing an economical and ecofriendly ethanol production process. Much emphasis is being given to the production of ethanol from agricultural and...
Dinesh Bhattarai

Prevalence of Campylobacter Isolated from Water
Цена: 4747.00 р.

In last 25 year, Campylobacter jejuni and Campylobacter coli account for the majority of human infections. Campylobacter is a fastidious organism that is capable of surviving in wide range of environments. These bacteria are microaerophilic but some can grow aerobically and anaerobically. With the global scenario of number one causative agent of food zoonosis is the Campylobacter; this study was aimed at determining the prevalence of Campylobacter spp. in various places of Kathmandu Valley and Ruphandehi district of Nepal.Campylobacter spp. was commonly isolated from water in this study. The water samples tested were all from actual or potential water sources for the use in slaughter house, so there are clear implications for the transmission of Campylobacter spp. to human and animal. Direct human exposure is also possible within the study area, as it is widely used for recreational and consumption purposes.
Sanjeev Patankar

Food Fermentations: Micro-nutrient Fortification Of Tribal Food
Цена: 5715.00 р.

Fermentation is one of the oldest forms of food preservation techniques in the world.Fermented foods such as bread,cheese has been consumed for thousands of years and strongly linked to cultural tradition in rural house holds and tribes. In Asia particularly in India many more cuisines and preparations involving food fermentations are practiced traditionally. Some preparations are well controlled and have good nutritional and hygienically.Tribal food preparations are crude and uncontrolled. Nutritionally they are deficient and are vehicles for intestinal pathogens.This results in severe micro nutrient malnutrition in tribal communities called Madiya in Gadchiroli Dist. of Vidarbha region of Maharashtra state in India.Madiya tribes consume one fermented rice preparation Ambil as staple. In this book the health status of Madiya tribes,composition of Ambil and their co-relation is discussed.similarly strategies for improvement of B-Complex vitamin levels are discussed by using...
Parvaze Ahmad Wani and Mohd. Saghir Khan

Heavy Metal Toxicity and their Remediation by Soil Microbes
Цена: 7653.00 р.

Among various contaminants, heavy metals, discharged from metal processing industries are known to have adverse effects on microbial diversity, soil fertility and yields of various crops. The excessive accumulation of these heavy metals can modify essential protein structure or replace an essential element causing chlorosis, growth impairment, browning of roots, and inactivation of photosystems. Also the ingestion of contaminated food or drinking water can expose humans and animals to toxic levels of the heavy metals. Recently, the use of biological materials for effective remediation of heavy metals, often termed bioremediation, from metal contaminated sites has emerged as a potential alternative to conventional treatment techniques. Bioremediation is a process that uses microorganisms or their enzymes to detoxify these contaminants and keep the environment free from these contaminants. Microorganisms and plants are usually used for the removal of these heavy metals. Several microbes...
Mohd Fazli Farida Asras,Rosfarizan Mohamad and Arbakariya Ariff

Solid-state Fermentation of Palm Kernel Cake
Цена: 6587.00 р.

Palm Kernel Cake (PKC) is an agro-industrial by-product obtained after extraction of oil palm from oil palm seeds is used extensively in the animal feed industry. 48 fungal cultures have been isolated from various types of tropical soil and screened through clearing zone method on chromogenic substrates such as Azo-carob galactomannan and Azo-CM cellulose. The best enzymes producer for cellulosic material is Strain D1 and has been identified as Aspergillus spp under Scanning Electron Microscope (SEM).
Gunjan Goel

Tannin degradation by ruminal bacteria and purification of tannase
Цена: 6587.00 р.

Tannins are the secondary polyphenolic compounds known primarily for their ability to bind and precipitate proteins and other macromolecules. The ingestion of complex polyphenols by animal leads to decreased feed intake, lower nutrient utilization and even death at higher level of intake. Hydrolysable tannins and condensed tannins (proanthocyanidins) are two different groups of these compounds that differ in their nutritional and toxic effects. The condensed tannins have a more profound digestibility-reducing effect than hydrolysable tannins, whereas the latter may cause varied toxic manifestations due to hydrolysis in rumen. This work has been carried out to isolate potential tannin degraders from gastrointestinal tract and rumen of animals, to purify the key enzyme, tannase and to evaluate the degradation of tannins in feeds using the potential isolates.
Chinyere Ezeanya

Bitter Kola (Garcinia kola): Antimicrobial And Therapeutic Qualities
Цена: 4747.00 р.

Bacterial species such as Staphylococcus aureus, Streptococcus pyogenes, Escherichia coli and Salmonella typhi continues to present unique challenges to clinicians, microbiologists and the molecular biologists around the world. These organisms are typically resistant to several antimicrobial agents but have been discovered to be susceptible to medicinal plants. Topics covered in this book include: Strategies for the extraction of bitter kola’s anti-microbial agents, Anti-microbial activity of the extract of bitter kola seed and leaf on Staphylococcus aureus, Streptococcus pyogenes, Escherichia coli and Salmonella typhi, Epidemiological characteristics and pathogenicity of Staphylococcus aureus, Streptococcus pyogenes, Escherichia coli and Salmonella typhi, Therapeutic and Economic benefit of bitter kola, Nutritional Importance of bitter kola, Recommended treatment of some selected bacterial infections using bitter kola and Future trend of bitter kola. This book should be especially...
Seema Prabhu and Geeta Narayan

Biosorption-Desorption Characteristics of Hg(II).
Цена: 4747.00 р.

Environmental exploitation by man and his activities is no new chapter. The presence of metal ions in the final industrial effluents is rising, and this is extremely undesirable, as they are toxic to both flora and fauna. Various techniques have been employed for the treatment of metal bearing industrial effluents, which usually include precipitation, adsorption, ion exchange, membrane and electrochemical technologies, adsorption on activated carbon, etc. Each of these methods has its own merits and demerits. The search for efficient, eco-friendly and cost effective remedies for waste water treatment had been initiated and in the last few decades this search has directed us towards bio-remediation.The tea fungus known as kombucha is a waste produced during black tea fermentation. Mercury (Hg) is a highly toxic metal which poses a serious threat to human beings even at low concentrations. The objective of this study was to check the potential of the dried waste tea fungal biomass to...
Mamta Rawat

Microbial Community and Water borne Diseases in Thar Desert, India.
Цена: 7653.00 р.

The provision of drinking water of adequate quality and quantity remains major public health and utter necessity in many districts of Thar desert, Rajasthan, India, where water borne diseases like, acute gastrointestinal illness (AGII) continue to cause extensive morbidity and mortality. The main aim of the study is to evaluate risks and factors attributable to drinking water and health parameters of locals. The book covers seven chapters. Chapter I comprise the introductory part describing the global perspective of water, health and sanitation. Chapter II covers the description of water sources, topography of studied area and assessment of pathogenic bacterial community. Chapter III include ground water quality analysis of Thar Desert Chapter IV summarizes the limnological and microbiological quality aspects of all nature of rain water harvested sources, whereas chapter V contains disease surveillance and health status observation. Chapter VI incorporates DALY estimation and Chapter...
Ibrahim Hosny

Probiotic cultures and human health-Review
Цена: 4747.00 р.

There are certain strains of bacteria mould and yeast have a health benefits for humans (called functional cultures), The health benefits of functional cultures are expressed their actions either directly through the interactions of ingested live microorganisms with the host (probiotic effect) or indirectly as the result of the ingestion of microbial metabolites synthesized during fermentation (biogenic effect). The role of probiotics has expanded from use in gut health maintenance and supplementation in the event of dysbiosis (microfloral imbalance) during antibiotic therapy, to a wide range of health applications.
Dr. Bhanu Shrivastava

Principles of Immunology
Цена: 7653.00 р.

The immune system is the body's defense against infectious organisms and other invaders. Through a series of steps called the immune response, the immune system attacks organisms and substances that invade body systems and cause disease.The immune system is made up of a network of cells, tissues, and organs that work together to protect the body. The cells involved are white blood cells, or leukocytes, which come in two basic types that combine to seek out and destroy disease-causing organisms or substances. When antigens (foreign substances that invade the body) are detected, several types of cells work together to recognize them and respond. These cells trigger the B lymphocytes to produce antibodies, specialized proteins that lock onto specific antigens. Once produced, these antibodies continue to exist in a person's body, so that if the same antigen is presented to the immune system again, the antibodies are already there to do their job. So if someone gets sick with a certain...
Sandhya Bhat K. and Apurba Sankar Sastry

A Review on Laboratory Diagnosis of Malaria
Цена: 4747.00 р.

This book on “Comparison Between Conventional Microscopic Techniques, Quantitative Buffy Coat And Rapid Immunochromatographic Assays for Histidine Rich Protein-II Antigen Detection, and Plasmodium Lactate Dehydrogenase Tests In Diagnosis Of Clinically Suspected Cases Of Malaria” is very useful in providing, wide arrays of information about advantages and also limitations of various malaria diagnostic tests. According to the facilities available in the health care setting, financial constraints of patients, clinical condition of patients, the suitable diagnostic technique should be selected as the method of choice. ICT is easy to perform, gives rapid report and suitable for field studies. QBC is highly sensitive, rapid and suitable for laboratories where facilities are available. However the peripheral blood microscopy still remains as widely accepted gold standard method for malaria diagnosis, when examined by a experienced microscopist, used to monitor the treatment response and can...

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