Food Preservation – Physical and Chemical Methods of Preservation

Food preservation – physical and chemical methods of preservation is a vast and multifaceted topic covering various subtopics. This topic is most useful for us to learn and research into ways of preserving food for a longer time and reducing waste. Food preservation – physical and chemical methods of preservation are one such area that has been studied in these sections. The relevant information has been provided on preservation – physical and chemical methods of preservation, principles of food preservation, physical and chemical methods, canning food preservation, and physical and chemical methods of food preservation pdf has been provided in the reference section. 

Food Preservation – Physical and Chemical Methods of Preservation

To understand what Food preservation – physical and chemical methods of preservation are some concepts must be cleared. Food preservation refers to certain methods and processes which help preserve food from fast decomposition. Food preservation – physical and chemical methods of preservation include ways of not letting any spoilage or infection of bacteria spread to the food. Keeping food from getting spoiled or from getting spoiled is the main concern of Food preservation – physical and chemical methods of preservation. There are various ways of carrying out food preservation:

• Drying
• Fermenting
• Cooling or refrigerating

Some modern ways of preservation are:

• Using chemicals and preservatives
• Pasteurising
• Canning
• Irradiation
• Freezing

Physical and chemical methods have been studied in the following sections. Food preservation – physical and chemical methods of preservation include the study of both methods. 

Canning Food Preservation

Canning food preservation is a modern method of preservation. Canning food preservation is one of the most important methods of food preservation. Improvements in technology and advancements made in packaging and bottling systems have positively impacted food preservation technology. There is increased popularity of canning food preservation in the food preservation industry. The mechanism of canning food preservation is very simple. Food is stored in containers or even jars. Then these are heated up. The high temperature used in canning food preservation kills harmful bacteria or microorganisms that cause spoilage. The heat leads to air escaping from the jar. This leads to the formation of a vacuum. The vacuum does not allow any moisture or oxygen to be retained inside the jar which is essential for bacterial growth. There are two distinct ways of canning in canning food preservation:

• Pressure – In this canning food preservation, pressure is used for food items with low acidity like dairy and meat as well as poultry.
• Heat – In the canning process here, hot water is used. This is useful for vegetables and fruits. Even pickled vegetables.

Principles of Food Preservation Physical and Chemical Methods

The principles of food preservation physical and chemical methods have been discussed here. The principles of food preservation physical and chemical methods are an important subject of Food preservation – physical and chemical methods of preservation. The principles of food preservation physical and chemical methods are dependent on certain factors:

• Ensuring safety and reliability of food sources
• Enriching the flavour and texture of food items
• Removal of foreign substances or unwanted microorganisms
• Increasing digestibility
• Increasing storage period and reducing nutrition loss
• The maximising texture of food items

The principles of food preservation physical and chemical methods are dependent on these requirements. The following are the principles of food preservation physical and chemical methods:

• Eradication of microorganisms, harmful substances, and disease spreading pathogens from the food items
• Stopping microbial growth on food
• Preventing asepsis
• Oxidation preservation

Physical and Chemical Methods of Food Preservation PDF

Physical and chemical methods of food preservation pdf have been provided in the reference list for the added benefit of students. These will help students and candidates to understand the concepts being discussed here much easier. 

Conclusion

For as long we can remember, food preservation has always been a priority. From the ancient and still prevalent method of sun drying and using salts to preserve food, there is a long and extensive history of the various methods of food preservations adopted all over the world. In the scientific arena, there are certain specialised methods of carrying out food preservation. Food preservation – physical and chemical methods of preservation are an important subject to study.