Food Preservation Practices For Food Quality Assurance

By Author: Nayan Niroula
Total Articles: 1
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Frozen food quality and safety

Frozen food quality is an integral part of any restaurant's food production. That's why restaurant owners invest so much time and effort on making sure that the products they serve are safe to eat. It's also why restaurant management courses train restaurant staff about food safety and quality. When it comes to food quality, the restaurant business is perhaps no different than any other industry. Unfortunately, sometimes it can be even more difficult for restaurant owners and managers to determine if their standards are high enough, and if their standards are low enough, to maintain a healthy image and long-term dependability with their customers.

This book presents a thorough, integrated view of frozen food quality. It examines quality from several perspectives: mechanical (mechanical and structural means of freezing), chemical changes (artificially introducing certain chemicals or changing them in a controlled manner), and biological safety (does the food have any biological hazards that can lead to harm if consumed). The authors explain the significance of these various factors ...
... and provide data and statistics for each of them. They also point out that frozen food quality is influenced by numerous outside factors such as the temperature at which the food is stored, the food storage temperature, the frequency of contamination, and the presence of additives. They conclude their discussion on frozen food quality by briefly considering the role of temperature, moisture, and contamination in relation to quality.

Most reviews of this book stress that its purpose is to illuminate the important points of frozen food quality. But, importantly, the book provides important information regarding how restaurant owners and managers can go about improving the quality of their products. In addition, the information presented in this text helps restaurant owners and managers distinguish between acceptable and unacceptable performance. This is because the methods and equipment used for micro-freezing and micro-thawing processes can affect food quality in different ways.

One of the most useful sections of the text focuses on the relationship between freezer temperatures and micro-freezing rate. The authors explain that foods with low freezing rates (which depend on factors such as fat content) freeze more slowly. The cooking time required to freeze foods with low freezing rates is short, thus resulting in higher quality. In contrast, foods with high freezing rates freeze more quickly and spoil sooner than low-freezing foods.

Another useful aspect of the text is its discussion of physical changes that take place in food materials during the freezing process. Physical changes that occur include ripples, tiny cracks, and "bondering." Bonding refers to the irreversible thermal bond that forms between heated and cooled water molecules. The thermal changes that occur during the freezing process cause physical changes in frozen foods that affect their taste, color, texture, and freshness. These physical changes are discussed in detail and present data on how to identify and eliminate problems before they occur.

The fourth section of the text discusses the role of thawing and defrosting in frozen food quality. The authors explain that foods that are thawed must have been stored at room temperature for at least four days before they can be re-frozen. Foods that are defrosted must be re-frozen after they are thawed. The authors also describe the steps needed to increase the shelf life of defrosted foods, as well as how to optimize thawing and defrosting. This section also includes recommended food storage conditions and recommended thawing times.

The fifth and final chapter discusses the relationship between frozen storage and ice crystal size. Because some of the tests described in previous chapters require foods to be frozen at different temperatures, the authors test frozen foods at various temperatures. They conclude that there is a positive relationship between freezing rate and the size of crystals in frozen foods. However, they recommend that you should only use an ice crystal size that fits your particular food type.

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