7 basic Importance of food preservation
As we all know, food processing, preservation, transportation and other processes vulnerable to external pollution of microorganisms and spoilage corruption. Without food preservation, we are unable to preserve food for long periods of time, resulting in a significant increase in the likelihood of famine in food shortages, so food preservation is very important and necessary. The traditional method of food preservation is usually dry, pickled, smoked, cellar storage, wine stains and so on. With the continuous development of science and technology, chemically synthesized preservatives become one of the most important additives in the food industry. Therefore, in recent years,
What is the food preservation definition?
Over View: Food preservatives have a sustained inhibitory effect on the growth of microorganisms whose metabolic substrates are spoilage. It is important that it suppresses the most corruptible effects in different situations, Especially under the conditions of sterilization is not sufficient has a sustained effect. The use of preservatives in food is limited, such usby drying, curing and some other physical methods is the most common methods.Special preservatives are organic acids such as acetic acid, oleate as a component of vegetable oil, mustard and other special essential oil components.Depending on the organism, various preservatives (iodoform, phenyl salicylate, aniline dyes
What is the list of chemical preservatives in food ?
There are many ways to save food. Commercial bactericidal methods destroy bacteria, and chemicals can effectively slow the metamorphic process by inhibiting microbial growth. In addition, you can also use frozen, dried, smoked, marinated, or canned food instead of preserving food. The most common chemical preservatives currently on the market are anti-microbial agents - used to inhibit the proliferation of bacteria, yeast and molds; antioxidants - used to slow fat oxidation and prevent rancid odor; and chemicals that block the process of food after-ripening. Now, scientists are still continuing to investigate more natural, safe food preservatives. 1.Nitrite and nitrate
List of food preservatives
Preservatives can be divided into synthetic chemical preservatives and sources Natural preservatives. These are the list of chemical preservatives and natural preservatives： Chemical preservatives include benzoic acid, sorbic acid and so on. Chemical preservatives must be strictly limited to China's "food additives use health standards," the provisions of the limited addition can not exceed the use. Organic chemical preservatives are mainly benzoic acid / sodium benzoate, sorbic acid / potassium sorbate, parabens, dehydroacetic acid, sodium diacetate, glucono-δ-lactone and various organic acids such as acetic acid, lemon Acid and lactic acid. Inorganic chemical preservatives include sulphurous acid / sodium sulphite, sulphur
The experiement of natural preservatives used in fired food
The experiement of rosemary extract used in fired peanut, bean biscute and meat Time :2017/9/17 People: I am megan , today i and my friend ms tang join in this experiment. Process : We will add 0.3% rosemary extract carnosic acid liquid oil 5% in to the fired peanut, fired bean biscute and fired meat . Purpose: We want to check out how many days of the fired food keep fresh with the rosemary extract carnosic acid liquid oil add into the fired oil . Place: Megan's Home 🙂 Material: peannut , bean biscute, meat , salt and hot pepper
9 kinds of natural food preservative.
9 kinds of natural food preservative Preservatives, especially natural food preservatives, have been in use for thousands of years. According to historical records, human beings have been seeking safe, stable, and long-term preservation of food from primitive society. Preservatives used in human history are salt, sugar, vinegar, and spices, while modern natural food preservatives are chemical constituents such as benzoates, nitrates, sulfites, and sorbic acids. Whether it is food preservatives, or some cosmetics and drug preservatives, the common purpose is to resist those unwanted micro-organisms such as mold, yeast and bacteria. natural food preservatives Dr Liu Who worked in