NFS 1049 Study Guide - Instant Coffee, Calorie, Electromagnetic Radiation
Document Summary
The application of engineering principles to the manufacturing of foods. Involves the design of processes and systems for: food material handling, processing, packaging, distribution. Celsius degree. water by 1 celsius degree: kilocalorie. Amount of heat necessary to raise the temperature of 1 gram of water by 1. Amount of heat necessary to raise the temperature of 1 kilogram of. Conduction heat transfer from molecule to molecule: no physical movement of the food during heat transfer, example: Molecules in egg gain heat energy from stove. These vibrations are passed from molecule to molecule in food. Convection heat exchanged between either liquid or gas (fluid surface) and solid surfaces (non-fluid surface: example: cake baking. Radiation electromagnetic radiation- transfer between two surfaces-depends upon __emissivity__ (radiating surface) and. __heat transfer__ a food to surrounding-temperature differences is the driving force-surface area is very important. : transfer of food component from one phase to another. Ex: ketchup: __elasticity___ stress is removed.
