week13C1 : QA/Qc Flashcards
(42 cards)
What is quality control?
involves testing (representative samples) of the finished product to determine whether they meet the specifications that have been set for the product.
What is quality assurance?
involves taking measures to ensure that the processing steps are properly performed, which should ensure that the finished products are of consistent quality.
What are the two categories into which the characteristic of a product may be subdivided into?
- Sensory qualities
2. Hidden qualities
What are the three categories into which the sensory qualities can be subdivided into?
- Appearance
- Textural
- Flavor
____ on chocolat is due to the fat crystallization and is a defect in the _____ attributes
fat bloom
appearance
Name the different methods to measure the colors
- human eye
- spectrophotometer
- tristimulus colorimetter
What is the use of the standard plate in the case of the evaluation of the color ?
The standard plate is made to represent the desired color to compare with the color seen (subjective method)
What are the various word used to describe liquids and pastes?
- Viscous
- non-viscous
- smooth
- creamy
What are the various words related to texture used to describe solids?
- crisp
- chewy
- crunchy
- soggy
What is rheology?
the study of the deformation and flow of matter
What is the name of the device that measure the time it takes for a viscous fluid to flow on a inclined plane
Botswick consistometer
What is the name of the device that measure the viscosity by applying a force on the liquid
viscometer
How is measured the solid and semi-solid foods?
by applying various forces like compression (squeezing), shear (cutting), and tension (pulling) or combinations thereof (chewing).
Name a texture measuring machine
Instron Universal Testing Machine
What is the fundamental rule associated with all food products?
If it doesn’t taste good, no one will eat it
Name four intstruments that can objectively measure some flavour parameters
- pH meter
2 Gas chromatography - Refractometers
- Conductivity measurements
What is the instrument used to measure the sugar content ?
refractometers
What is the instrument used to measure the salt concentration?
conductivity measurements
How are determined the best before dates?
with accelerated storage trials
What are unit operations?
discrete steps of the food processing
Name de common unit operations
- Materials handling
- cleaning related operations
- Separation related operations
- Disintegration-related operations
- Mixing related operation
- Heat exchange related operation
- Evaporation/concentration related operation
- Drying related operation
- Forming/shaping related operations
- Packaging related operations
- Controlling-related operations
Name the unit operation related to this sentence : liquid nitrogen is used to cool fruits and vegetables at harvest and during transport to reduce their rate of respiration.
Material handling
What is the unit operation responsible for the contamination?
material handling
Name the unit operation related to this sentence : a common primary unit operation for most products is the removal of extraneous matter:
Cleaning-related
