Xem 1-20 trên 120 kết quả Food factor
  • The use of acoustic energy in food or bioprocessing operations is a relatively new endeavor if compared with other sources of energy, such as mechanical or thermal, which have been utilized for centuries in various applications. There are two important factors that make the current ultrasound-assisted processes possible. One is related with the development in ultrasound generation technology and the other one is the better understanding of interactions between acoustic energy and liquid media, enabling the development of important guidelines for ultrasound-based processes....

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  • Since 1897 instruction has been given at the University of Minnesota, College of Agriculture, on human foods and their nutritive value. With the development of the work, need has been felt for a text-book presenting in concise form the composition and physical properties of foods, and discussing some of the main factors which affect their nutritive value. To meet the need, this book has been prepared, primarily for the author's classroom. It aims to present some of the principles of human nutrition along with a study of the more common articles of food.

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  • In recent years, the food and beverage industry in the US has viewed children and adolescents as a major market force. As a result, children and adolescents are now the target of intense and specialized food marketing and advertising efforts. Food marketers are interested in youth as consumers because of their spending power, their purchasing influence, and as future adult consumers. Multiple techniques and channels are used to reach youth, beginning when they are toddlers, to foster brand-building and influence food product purchase behavior.

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  • Pathogenic Mechanisms Enteric pathogens have developed a variety of tactics to overcome host defenses. Understanding the virulence factors employed by these organisms is important in the diagnosis and treatment of clinical disease. Inoculum Size The number of microorganisms that must be ingested to cause disease varies considerably from species to species. For Shigella, enterohemorrhagic Escherichia coli, Giardia lamblia, or Entamoeba, as few as 10–100 bacteria or cysts can produce infection, while 105–108Vibrio cholerae organisms must be ingested orally to cause disease.

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  • Food analysis is the discipline dealing with the development, application and study of analytical procedures for characterizing the properties of foods and their constituents. These analytical procedures are used to provide information about a wide variety of different characteristics of foods, including their composition, structure, physicochemical properties and sensory attributes.

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  • A range of methods is available for the enumeration of microorganisms in food. The choice of method will depend on a number of factors. • Type of sample. • Characteristics, including the physiological state, of specific organisms sought. • Characteristics of specific media. • Lower limit of enumeration required. • Purpose of the examination.....

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  • The procedure used for isolation of a microorganism from a food sample will depend upon a number of factors. If the organism is expected to be found in large numbers, or its presence is only significant when there are large numbers....

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  • Over 98 per cent of sprayed insecticides and 95 per cent of herbicides reach a destination other than their target species, including non-target species, air, water and soil. Pesticide drift occurs when pesticides suspended in the air as particles are carried by wind to other areas, potentially contaminating them. Pesticides are one of the causes of water pollution and some pesticides are persistent organic pollutants and contribute to soil contamination. Detection of pesticide molecules in the food items from plant and animal origin become imperative for safe consumption of food.

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  • Nutrition is one of the most important factors that impact health in all areas of the lifecycle. Pregnant women need adequate food and health care to deliver a healthy baby who has a good birth weight and a fighting chance for survival. In many regions of the world, the infant mortality rate is very high, meaning that many infants will not live to see their first birthday. Breastfeeding is the ideal method of feeding and nurturing infants, because breast milk contains many immunologic agents that protect the infant against bacteria, viruses, and parasites.

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  • The average American consumes an estimated 50 tons of food in a lifetime. This staggering amount of food represents the sum of daily choices each of us makes regarding the type, quality, and quantity of foods. These critical choices in turn reflect a complex interplay of many factors, including family upbringing, religious or philosophical beliefs, as well as practical matters, such as the cost and availability of foods and beverages. Importantly, Americans are increasingly selecting food for health reasons.

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  • Most people are aware of and concerned with the health effects of pesticide residues in the water they drink and the food they eat, but many are surprised to learn that pesticides are commonly found in air and rain. Scientific studies of pesticides in various atmospheric matrices (air, rain, snow, aerosols, and fog) have been ongoing for 40 years. When taken together, these studies, many of which are small and focused, provide a significant contribution to answering the questions when, where, how, and why pesticides are in the atmosphere.

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  • In 2008 food prices surged plunging millions back into hunger and triggering riots from Egypt to Haiti and Cameroon to Bangladesh. Whereas fuel prices, which also surged, have fallen back sharply food prices remain problematic with wheat, corn and soya still higher than they were 12-18 months ago. In order to understand the factors underpinning the food crisis and to assess trends, UNEP commissioned a Rapid Response team of internal and international experts. Their conclusions are presented in this report launched during UNEP’s 25th Governing Council/Global Ministerial Environment Forum.

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  • The United Nation’s Food and Agriculture Organization (FAO) has declared 2009 the International Year of Natural Fibers so we are using Wildlife Friendly certified plant and animal fibers, specifically yarn as a mini case to illustrate how you can pull together the guidance in this document for your product. Market Trends and relevance to Wildlife Friendly yarns - The past few years have seen an explosive interest in knitting and corresponding growth in yarn sales especially with a younger demographic of women.

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  • Increasing attention has also been given to dissecting and understanding diversity in relation to genes underlying important agronomic traits in a number of crops. Molecular phylogenetics and genetic diversity analysis can help to clarify the taxonomic identity and evolutionary relationships of the wild relatives of crop species. These methods can also help prevent misidentification and carefully plan effective germplasm management strategies.

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  • At the end of a day and a half of presentations and discussion, participants concluded that, while more research is needed, there are immediate opportunities to mediate the growing health risks associated with poor eating and physical inactivity. These areas suggest both voluntary and regulatory strategies that focus on strengthening industry accountability, while changing the food and physical activity environment and promoting healthier behaviors.

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  • To get interested consumers to your website, the site needs to be visible to surfers using Google. Why is Google so important? The research firm Hitwise which measures Web audiences, estimates that Google has 72% of the US search engine market, versus 17.9 % for Yahoo. Microsoft’s two search services, MSN and Live.com, constitute a distant third, at a combined 5.4 percent. Many website owners who track where their visitors come from report that Google’s search engine now refers 80 to 90% of their visitors. 2 For optimal results on Google you will want...

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  • The burning of fossil fuels puts into the atmosphere carbon dioxide, which is causing gradual global warming. This 'greenhouse effect' may by early next century have increased average global temperatures enough to shift agricultural production areas, raise sea levels to flood coastal cities, and disrupt national economies.

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  • Aquaculture is a modality of food production that has been experiencing continuous expansion in many countries worldwide. This expansion brings the challenge of developing reliable tools for disease control, to assure high productivity of healthy seafood. The increase of farmed fish production raises the issue of achieving a sustainable and environmental friendly aquaculture. The adoption of best management practices in the whole production chain, based on “state of the art” scientific knowledge, is the key for sustainable health management.

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  • The specific objective was to take the principles of the Eatwell plate (FSA 2007), which was designed to illustrate the balance of food and drinks that should be consumed for a healthy diet, and develop a ‘Livewell’ plate. The Livewell plate would be designed not only to achieve the dietary recommendations for health but also meet the GHGE targets. In the short term, not only does the diet need to meet both these requirements but any future diet also needs to be acceptable to the UK consumer if we are realistically to expect people to change their current diet. For...

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  • In order to establish the preferred shopping places for food, consumers were asked to indicate what shop they traditionally buy their groceries from. Six places were identified from past research as: supermarket, spaza shops (which are common in rural areas), Grocery stores, Farmers markets such as the Kei Fresh produce in Mthatha or the farmers market in Wilsonia, East London, Street vendors or the farm gate. Respondents’ were free to mark all the choices. An overwhelming majority of the respondents, 96% in the Transkei and 89.

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