Food Preservation and Processing Quiz

Food preservation involves the use of specific thermal and non-thermal processing techniques to minimize harmful microorganisms and ensure food safety and longer shelf life.

Canning and freezing are two methods of food preservation.

The purpose of food preservation is to prevent spoilage, maintain food quality, and extend shelf life.

<p>Shelf life of food is the period of time during which a product can be stored without significant changes in terms of food quality.</p> Signup and view all the answers

<p>Drying and vacuum packaging are two techniques of food preservation.</p> Signup and view all the answers

<p>Food preservation allows for longer storage, maintains food quality, and preserves nutritional value.</p> Signup and view all the answers

<p>acid, alcohol, hydrogen sulfide, and carbon dioxide</p> Signup and view all the answers

<p>Aw is a measure of free water available for chemical and biological reactions and for the growth of microorganisms.</p> Signup and view all the answers

<p>Aw = Ps / Pw (ratio of the vapor pressure in the solution compared to the vapor pressure of pure water)</p> Signup and view all the answers

<p>Dehydration, Heating, Cooling, Freezing, Radiation</p> Signup and view all the answers

<p>To reduce water content and water activity (Aw) to make it difficult for microorganisms to survive</p> Signup and view all the answers

<p>Cannot be easily extracted, can be frozen at very low temperatures, no vapor pressure</p> Signup and view all the answers

<p>Water is easily extracted, and it has a measure called water activity (Aw)</p> Signup and view all the answers

<p>Drying by the sun, Continuous hot air drying, Fluidized bed drying</p> Signup and view all the answers

<p>To reduce water activity (Aw)</p> Signup and view all the answers

<p>It decreases water activity (Aw)</p> Signup and view all the answers