Microorganisms differ widely in their ability to resist salt- or sugar-induced reductions of a w. Most disease-causing bacteria do not grow below 0. Yet other microorganisms grow quite well under even more highly osmotic, low a w conditions.
For example, halophiles are an entire class of "salt-loving" bacteria that actually require a significant level of salt to grow and are capable of spoiling salt-cured foods. These include members of the genera Halobacillus and Halococcus. Food products that are concentrated sugar solutions, such as concentrated fruit juices, can be spoiled by sugar-loving yeasts such as species of Zygosaccharomyces. Nevertheless, use of salt and sugar curing to prevent microbial growth is an ancient technique that remains important today for the preservation of foods.
Already a subscriber? Sign in. Remember though to follow tested recipes and recommendations regarding the amount of salt required for home food preservation. This is essential as reducing the amount of salt in preserved foods will make foods more prone to microbial activity effecting food safety. Choose your salt carefully- use a pickling salt or Kosher salt, this is important as ordinary table salt may contain other additives such as iodine which was originally added to salt to help increase people's iodine intake in order to avoid incidents of enlarged thyroid glands.
Maintaining good health or yourself or others includes knowing how to prepare or store food as well as understanding the types of food that are good for you. Whether you are embarking on a self-sufficient lifestyle, trying to improve health and diet, or if you provide food or nutritional related services to others.
ACS offer a great selection of courses in all of theses areas. Under the guidance of our expert tutors, students can learn about self-sufficiency, diet, nutrition and health. By Michael Le Page. A diet high in salt may diminish our ability to fight bacterial infections. Christian Kurts at the University Hospital of Bonn in Germany and his team first showed that mice given a high salt diet were less able to fight kidney infections caused by E.
Creating a salt water rinse to gargle in your mouth can help kill harmful cavity-causing bacteria. The benefits of gargling salt water include directly killing the bacteria as a result of osmosis as described above and temporarily increasing the pH in your mouth.
This creates an alkaline environment that most oral bacteria cannot survive in. Gargle this solution for 30 seconds before spitting it out.
Do not swallow. Corning and brining foods. Corning, also called salt-curing, refers to rubbing salt pellets onto meat in order to prevent bacterial growth. This process requires you to rub salt into meat to get the salt concentration to 20 percent or higher. It you have a one pound slab of beef, for example, you would need to rub 3 ounces of salt onto the surface of the meat. Brining is similar except it involves creating a salty solution called a brine instead of rubbing salt directly on the foods.
To make a brine, you mix salt and water in a ratio of one part salt to five parts water. You then add in your food, usually vegetables and meats, and this will both prevent bacterial growth and kill most bacteria already on the food.
Washing cutting boards and counters. You can also rub salt directly on bacteria-prone surfaces like cutting boards and counters in order to kill bacteria on those surfaces and prevent future growth.
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