Skip to main content

Basic principles of food processing and preservation :easy notes

www.morebooks.de is the online bookstore for purchase of copies

PRINCIPLES OF REFRIGERATION STORAGE

LOW TEMPERATURE

Refrigeration storage room require sufficient capacity/insulation to maintain temperature of + 1oC, it is important to note the numbers of doors and factors causing heat cut. Vegetables and fruits generate different levels of heat. They are stored at different temperatures. The low temperature must be maintained as much as possible.

AIR CIRCULAÞION AND HUMIDITY CONTROL

Air is required to remove heat from food surface. If the air is too moist there is surface condensation and mould growth, if the air is too dry, food may dry out. Each food has its own relative humidity and temperature. The best relative humidity is equivalent to the moisture in food. Fans are constructed in the refrigeration system in order to enhance air circulation, all the sections of the room receives the low temperature. The hygrometers are read and interpreted correctly to ensure that the correct relative humidity is maintained  so foods dont dry out or becomes too moist. The humifity requirements for foods are determined experimentally.

HYPOBARIC STORAGE

Refrigeration storage should be under reduced pressure and high relative humidity, reduced pressure lowers Oxygen level and high relative humidity prevents food dehydration. Lowered Oxygen level discourages the growth of spoilage aerobic organisms.

.

Excerpts from the book. Can get it from the online store. Www.morebooks.de (https://www.morebooks.de/gb/search?utf8=%E2%9C%93&q=Ukponmwan+ifueko+oghogho+)

Or

Comments

Post a Comment

Popular posts from this blog

Physical classification of water

Hygroscopic water This is the water present in an air dry soil held tightly by soil solids at a suction pressure greater than 3.1 bar. This type of water cannot be removed by evapouration and roots of higher plants. Only microbial activities have been found to take place here.
Post a Comment
Read more

Aprilians

Strong resilient women are born in April, celebrate them!
Post a Comment
Read more

Arboreal Habitat

Trunk of a Palm tree A variety of plants and animals live on and sometimes in a palm tree. The plants are epiphytes most of which live in humus and dusts which collects in the leaf bases of a palm tree. The animals are there because of these epiphytes or of the palm tree itself. A palm tree maybe divided into three regions, the crown, trunk and aerial parts of the roots. The common epiphytes found on palm trees are orchids (Diaphanthe, Bulbophyllum) figs, ferns, mosses. The animals found here are small animals like insects and spiders. You can get a soft copy of this book by sending me mail. ukponifueko@gmail.com.
Post a Comment
Read more