Get the answer of: Why is Food Preservation done? From the earliest times, storage of stable nuts and grains for winter provision is likely to have been a feature shared with many other mammals but, with the advent of agriculture, the safe storage of surplus production assumed greater importance if seasonal growth patterns were to be used most effectively. Food [...]
The heat sensitivity of various micro-organisms is illustrated by Table 4.3 which shows their D values. Generally psychrotrophs are less heat resistant than mesophiles, which are less heat resistant than thermophiles; and Gram-positives are more heat resistant than Gram-negatives. Most vegetative cells are killed almost instantaneously at 100 °C and their D values are measured and expressed at temperatures appropriate [...]
The following article highlights the four radiation techniques for preservation of food: The techniques are:- 1. Irradiation 2. Microwave Radiation 3. UV Radiation 4. Ionizing Radiation Radiation Technique # 1. Irradiation: Electromagnetic (e.m.) radiation is a way in which energy can be propagated through space. It is characterized in terms of its wavelength A, or its frequency v, and the [...]