NUSC 3233 lecture 3 study guide
rheology - answer-✔Objective Analysis: What can be measured?
- *Moisture: important for shelf life
- texture: crispy, soft, crunchy
- ___: ketchup stickness, viscous to stay on fry
;viscosity, how thick /thin liquid might be
- color: use a computer to scan code to LAB value
- nutrient analysis: food label
- pH
- Sugar, salt and flavor
highly
greater - answer-✔Objective Analysis: Introduction
Must utilize all kinds of tools to obtain data
Sample size can be easily controlled
Obtain ___ reliable data
Results are of ___ significance
Physical and chemical methods
Supplement the data obtained by subjective methods
LAB value - answer-✔___ is the way food industry measures color in number to
find certain color
accurate - answer-✔Objective Analysis: Guidelines
, 1. Conduct all measurements with equipment if available
2. Obtain necessary testing devices
3. Take good care of equipment
4. Define the samples to be tested
5. Establish operating conditions
6. Avoid acquisition of false data (outliers)
7. Be ___ and precise
Accuracy - answer-✔__: closeness of a measured value to a standard or known
value
Precision - answer-✔__: closeness of two or more measurements
not - answer-✔some thing can be accurate and __ precise and vis versa, but need to
be both
use hand - answer-✔How to measure volume of an irregular shaped sample?
Seed Displacement Method - answer-✔How can the volume of a food product be
measured (especially baked goods)?
without - answer-✔in seed displacement method Volume of seeds (rapeseeds,
canola) is determined with and __ sample
calibration - answer-✔Seed Displacement Method
oRepeated __
rheology - answer-✔Objective Analysis: What can be measured?
- *Moisture: important for shelf life
- texture: crispy, soft, crunchy
- ___: ketchup stickness, viscous to stay on fry
;viscosity, how thick /thin liquid might be
- color: use a computer to scan code to LAB value
- nutrient analysis: food label
- pH
- Sugar, salt and flavor
highly
greater - answer-✔Objective Analysis: Introduction
Must utilize all kinds of tools to obtain data
Sample size can be easily controlled
Obtain ___ reliable data
Results are of ___ significance
Physical and chemical methods
Supplement the data obtained by subjective methods
LAB value - answer-✔___ is the way food industry measures color in number to
find certain color
accurate - answer-✔Objective Analysis: Guidelines
, 1. Conduct all measurements with equipment if available
2. Obtain necessary testing devices
3. Take good care of equipment
4. Define the samples to be tested
5. Establish operating conditions
6. Avoid acquisition of false data (outliers)
7. Be ___ and precise
Accuracy - answer-✔__: closeness of a measured value to a standard or known
value
Precision - answer-✔__: closeness of two or more measurements
not - answer-✔some thing can be accurate and __ precise and vis versa, but need to
be both
use hand - answer-✔How to measure volume of an irregular shaped sample?
Seed Displacement Method - answer-✔How can the volume of a food product be
measured (especially baked goods)?
without - answer-✔in seed displacement method Volume of seeds (rapeseeds,
canola) is determined with and __ sample
calibration - answer-✔Seed Displacement Method
oRepeated __
