Food Processing and Preservation Methods

Food Processing and Preservation Methods and Technologies

Advantages of Food Processing

• Food processing makes food more edible, palatable, and safe to consume and increases the shelf life after harvesting.

Common Food Spoilage Bacteria

• Lactobacillus, yeasts, molds, and other microorganisms are common food spoilage bacteria.

Pickling Methods

• Pickling can be divided into two categories.
• Fermentation, physical, and chemical pickling are types of pickling methods.
• In physical pickling, food is preserved in edible liquids that kill microorganisms and bacteria.
• In fermentation pickling, the bacteria in the liquid produce agents acting as preservatives.
• Pickling methods change the food's flavor, texture, and taste.

Preservation Agents

• Organic acids such as lactic acid and acetic acid are produced during pickling, which act as preservative agents.
• Brine is also used for food preservation, and it inhibits the growth of bacteria along with acids.

Oldest Technology for Food Preservation

• Fermentation is the oldest technology used for food preservation.

Modern Methods of Food Preservation

• Refrigeration and sugaring are modern methods of food preservation.

Other Preservation Methods

• Lyophilization is also known as freeze drying.
• Pascalization is a method that exposes foods to very high pressure to kill microorganisms.
• Nonthermal plasma is a method that exposes the food surface to a flame of ionized gas molecules to kill microbes.
• Modified atmosphere is a method that reduces oxygen and increases carbon dioxide in the storage environment.

Food Processing and Preservation Methods

• Three methods of food processing and preservation are fermentation, physical pickling, and chemical pickling.
• Four appropriate methods for processing and preserving different food commodities are fermentation, pickling, refrigeration, and sugaring.
• Traditional methods of food processing and preservation include fermentation, pickling, and drying, while modern methods include refrigeration, sugaring, and others.

Enzymes Associated with Food Spoilage

• Three enzymes associated with food spoilage are not specified.

Environmental Friendly Food Packaging Films/Materials

• Three appropriate and environmental friendly food packaging films/materials are not specified.

Benefits of Food Processing and Preservation

• Five benefits of food processing and preservation are not specified.

A quiz on food processing and preservation methods, including technologies and advantages of processing. Covers food spoilage and shelf life.