Food safety

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Food safety
Food Safety 1.svg
Terms
Critical factors
Bacterial pathogens
Viral pathogens
Parasitic pathogens

Food safety is a scientific discipline describing handling, preparation, and storage of food in ways that prevent food-borne illness. The occurrence of two or more cases of a similar illnesses resulting from the ingestion of a common food is known as a food-borne disease outbreak.[1] This includes a number of routines that should be followed to avoid potential health hazards. In this way food safety often overlaps with food defense to prevent harm to consumers. The tracks within this line of thought are safety between industry and the market and then between the market and the consumer. In considering industry to market practices, food safety considerations include the origins of food including the practices relating to food labeling, food hygiene, food additives and pesticide residues, as well as policies on biotechnology and food and guidelines for the management of governmental import and export inspection and certification systems for foods. In considering market to consumer practices, the usual thought is that food ought to be safe in the market and the concern is safe delivery and preparation of the food for the consumer.

Food can transmit pathogens which can result in the illness or death of the person or other animals. The main mediums are bacteria, viruses, mold, and fungus (which is Latin for mushroom). It can also serve as a growth and reproductive medium for pathogens. In developed countries there are intricate standards for food preparation, whereas in lesser developed countries there are fewer standards and less enforcement of those standards. Another main issue is simply the availability of adequate safe water, which is usually a critical item in the spreading of diseases.[2] In theory, food poisoning is 100% preventable. However this cannot be achieved due to the number of persons involved in the supply chain, as well as the fact that pathogens can be introduced into foods no matter how many precautions are taken. The five key principles of food hygiene, according to WHO, are:[3]

  1. Prevent contaminating food with pathogens spreading from people, pets, and pests.
  2. Separate raw and cooked foods to prevent contaminating the cooked foods.
  3. Cook foods for the appropriate length of time and at the appropriate temperature to kill pathogens.
  4. Store food at the proper temperature.
  5. Use safe water and safe raw materials.

Economic importance of fungi in commercial agriculture.

Economic importance of fungi in commercial agriculture.Fungi are one of the most significant organisms in the environment. They are hidden from the naked eyes but their effects and impact are very evident and plenty. Learn more about fungi and the economic importance of fungi in commercial agriculture. The economic importance of fungi refers to both the advantages and disadvantages of fungi. Fungi are one of the most important microorganisms in our environment. The play a number of important roles in medicine and in commercial agriculture. The uses of fungi are numerous. They are used in production industries like bakeries and breweries, in food processing, in medicines, etc. . Some fungi found in the soil are beneficial in commercial agriculture because their activities help to maintain soil fertility. Saprophytic fungi in acidic soils with low bacterial activities cause decay and help decompose dead plants and their waste. They take up the complex organic compounds by secreting enzymes. These enzymes convert the complex organic compounds into simpler ones like ammonia, hydrogen sulphide, carbon dioxide, water, etc. Some of these simpler compounds are absorbed back into the soil to form humus. The rest into the air where they are used again by plants for synthesis. Most saprophytic fungi involved in decay maintain a constant cycle of carbon dioxide which is the very important for plant photosynthesis. Some fungi attach to the roots of some plants and help them in taking up nutrients from the soil. This is known as mycorrhizal association. These plants can only grow to satisfaction when mycelium of the fungal partner is present in the soil. Mycorrhiza present in the soil helps in the development of good soil structure. They join small soil particles together to form bigger ones. more

Cows offers clue that leads to an HIV vaccine.

Cows offers clue that leads to an HIV vaccine. "Cows have shown an 'insane' and 'mind-blowing' ability to tackle HIV which will help develop a vaccine, say US researchers," BBC News reports. The report is based on new research in cows that were immunized against HIV before having their immune response to HIV assessed. There's currently no vaccine for HIV because the virus mutates so easily. Scientists aim to develop a vaccine that is not only potent (produces a strong immune system response), but also causes the immune system to make "broadly neutralizing antibodies" (able to protect against many different strains of virus). The four cows in this study were immunized against HIV with a specially developed vaccine to test both strength and "breadth". Some cows developed a weak response with reasonable breadth (20% – or it helped protect against 1 in 5 strains tested in the lab) at 42 days. One cow in particular showed an impressive immune response to most of the lab strains of HIV ("96% breadth") 381 days after being vaccinated. This research, done in a small number of cows, may help scientists work out if immune proteins made in cows could potentially be used to protect humans against a range of HIV strains. more