Card 281
Question
In statistical analysis, what does PCA stand for?
Answer
Principal component analysis
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 282
Question
What is spectroscopy?
Answer
Production, measurement, and interpretation of spectra arising from the interaction of electromagnetic radiation with matter
Card 283
Question
In proximate analysis, what component is determined by the Kjeldahl method?
Answer
Protein (nitrogen content).
Card 284
Question
The Kjeldahl method is the standard method for determining the concentration of what macronutrient?
Answer
Protein (or Nitrogen)
Card 285
Question
Protein A is eluted faster than Protein B on a gel filtration column. Which protein has a higher molecular weight?
Answer
Protein A
Card 286
Question
What type of analysis estimates the "moisture", "crude fat", "crude protein", "ash" and "carbohydrate by difference" in a food product?
Answer
Proximate analysis
Card 287
Question
What is the CDC's gold standard for microbe fingerprinting?
Answer
Pulsed Field Gel Electrophoresis (PFGE)/Whole Genome Sequencing
Card 288
Question
What does PFPD stand for wrt GC?
Answer
Pulsed Flame Photometric Detector
Card 289
Question
What is the full form of QA wrt food analysis?
Answer
Quality Assurance
Card 290
Question
What does the acronym QC stand for wrt food analysis?
Answer
Quality Control
Card 291
Question
What is the full form of QE wrt food analysis?
Answer
Quality Evaluation
Card 292
Question
What does QMS stand for wrt food analysis?
Answer
Quality Management Systems
Card 293
Question
Near and Mid-IR can both be used to analyze foods. Which is most commonly used for quantitative analysis?
Answer
Quantitative - Near-IR; Qualitative - Mid-IR.
Card 294
Question
What are two measures of dispersion?
Answer
Range, standard deviation, variance, interquartile range
Card 295
Question
Atomic Mass Spectroscopy separates molecules according to their m/z ratio. What is the m/z ratio?
Answer
Ratio of mass to charge
Card 296
Question
Ruhemann's purple is formed by what reaction used in food analysis?
Answer
Reaction of Ninhydrin with amine group of amino acids.
Card 297
Question
What color are anothcyanins at acidic pH?
Answer
Red
Card 298
Question
The Lane-Eynon method is a titration that measures what in a food sample?
Answer
Reducing sugars
Card 299
Question
What is the full form of RI?
Answer
Refractive Index
Card 300
Question
What chromatographic detector is commonly used for sugars and alcohols without chromophores?
Answer
Refractive index detector
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