Card 301
Question
What instrument is used to measure soluble solids in foods?
Answer
refractometer
Food analysis
Discover Food analysis: 381 flashcards with questions and answers.
- Subject
- Sciences / Chemistry
- Language of creation
- English
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Cards in this set
Card 302
Question
What is the most common instrument used for sugar concentration measurement in solution?
Answer
Refractometer
Card 303
Question
In statistics, what is a Type I Error?
Answer
Rejecting a true hypothesis
Card 304
Question
What is the full form of RLU, a unit of measurement used to quantify the amount of light emitted by a sample?
Answer
Relative Light Units
Card 305
Question
Silver nitrate is used as a titrant in food analysis to determine what food component?
Answer
Salt (sodium chloride). The silver reacts with the chloride to precipitate silver chloride in the Mohr or Volhard Titrations.
Card 306
Question
What is the measurement of how much KOH or NaOH is needed to break down one gram of fat?
Answer
Saponification value
Card 307
Question
What does the acronym associated w/food analysis techniques 'SEM' stand for?
Answer
Scanning electron microscopy
Card 308
Question
What is the name of the commonly used melt test for cheese where sample discs of known dimensions are heated in an oven and the final diameter of the melted disc is measured?
Answer
Schreiber melt test
Card 309
Question
What is the unit of measurement of heat in peppers?
Answer
Scoville
Card 310
Question
What is the difference between SDS-PAGE and Urea-PAGE?
Answer
SDS-PAGE separates proteins solely based on size, whereas Urea-PAGE separates proteins based on their charge to size ratio.
Card 311
Question
With respect to spectrometric analytical techniques, what does SIMS stand for?
Answer
Secondary Ion Mass Spectrometry
Card 312
Question
What is a farinograph used for?
Answer
Shear and viscosity (or properties is acceptable) of dough
Card 313
Question
What is the primary ingredient in sand?
Answer
Silica (silicon dioxide)
Card 314
Question
The most common contaminant which is used to hold vacuum in the isolation apparatus, and causes large, widespread peaks in the gas chromatogram which mask peaks of many important flavor compounds is _______.
Answer
Silicon grease
Card 315
Question
What does the acronym associated w/food analysis techniques 'SDS-PAGE' stand for?
Answer
Sodium dodecyl sulfate polyacrylamide gel electrophoresis
Card 316
Question
What does SDS-PAGE stand for?
Answer
Sodium Dodecyl Sulfate-Polyacrylamide Gel Electrophoresis
Card 317
Question
What does SPME stand for in analytical chemistry?
Answer
Solid Phase Micro Extraction
Card 318
Question
What extraction method, invented in 1897, is still used to extract fat from solids?
Answer
Soxhlet
Card 319
Question
Name a solvent extraction method used to measure fat in foods.
Answer
Soxhlet, Goldfish or Mojonnier
Card 320
Question
Name an official method of food analysis for fat determination.
Answer
Soxhlet, Mojonnier
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