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Which is included to the scope of Food Physics?

• Food preparation and presentation

• Food safety and quality preservation

• Interaction of microorganisms to the quality of food

• Reaction of the mixture to the chemical composition of the product.

When is a food sample comes into equilibrium with the atmosphere surrounding it?

Why water is important in an important component of all food materials?

 

• Water plays a decisive role in dictating the physical properties.

• Water affects quality and microbial of food

• As universal solvent, water affects chemical and biochemical degradation of the food material.

• all

Why food physics important

• food safety

• food processing and development of new food.

• shelf life of food

• quality of food involves the physical properties of food

• all

_________________ when materials are drawn in the bulk of the phase

_______________ result from a two-step process involving transfer of water vapor between the food sample and the surrounding fluid atmosphere

• Equilibrium relative humidity

• Equipotential humidity

• Equipotential humidity

• Equilibrium density

• Adsorption

_________________ when a material adheres to the surface.

Why of the classic method for bringing a food sample to a specified water activity?

  

• Weight food sample

• Place food sample in a closed chamber

•    Control the relative humidity desired

• all

As the system (food and environment) reached the equilibrium humidity.

• food sample neither loss or gain moisture

• food sample either loss or gain moisture

   

• food stability cannot be reached

• food quality degraded

The simplest way of identifying or measure food moisture loss is by

 

• weighing

• drying

• chromatograph

• absorption technique