3-Meat Aroma Flavor Flashcards

1
Q

5 Factors of Desirable Meat Compounds

A
  • Marbling
  • Texture
  • Color
  • Tenderness
  • Flavor
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2
Q

4 Reaction that can affect flavor in meat

A
  • Maillard Reaction
  • Lipid oxidation
  • Interaction of Maillard products and lipid oxidized products
  • Vitamin degradation
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3
Q

Characteristic of volatiles compound

A
  • Organic

- Low Molecular Weight

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4
Q

Factors that influences aroma flavor of cooked meats

A
  • Lipid
  • Diets
  • Breeds
  • Meat pH
  • Ageing
  • Cooking condition
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5
Q

Volatile compounds in Boiled, Roasted, and Cooked

A
Boiled
- 2-Furfurythiol
- 4-hydroxy-2,5-dimethyl-3(2H)-furanone
- 2-methyl-3-furanthiol
Roasted
2-ethyl-3,5-dimethyl pyrazine
2,3 diethyl-5-methylpyrazine
Cooked
Methional
Decanal
Heptanal
2-methyl butanal
E-2-undecanal
E-2-dodecanal
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5
Q

Two major types of meat flavor precursor

A
Lipids
Water soluble (free sugars, sugar phosphate, free amino acid, peptides, nucleotides, nucleotides-bound sugars, and vitamin
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6
Q

Maillard reaction is the interaction between _____ and _____ at _______ conditions

A

free sugars; free amino acids; heating

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7
Q

3 main stages of maillard reaction

A
  • Condensation
  • Rearrangement
  • Dehydration , fragmentation, polymerization, cyclization
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8
Q

Volatile flavor formation depends on

A
  • Reactants

- Catalytic conditions ( heating temperature, moisture, and pH)

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8
Q

Volatile flavor formation depends on

A
  • Reactants

- Catalytic conditions ( heating temperature, moisture, and pH)

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9
Q

High heating form _______ and Low Heating cause ______

A

Lipid alkyl radicals ; Lipid oxidation - Lower odor threshold

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10
Q

Factors that affect vitamin degradation

A
  • Cooking duration
  • Temperature
  • Type of cooking
  • pH
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11
Q

Fish oil supplements can induce higher level of _______ in cattle

A

alkyl-3-thiazoline

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12
Q

how diet could alter the flavors

A

Diets - intramuscular fat - interaction and flavor generation

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13
Q

Breeds can be differentiate between _____ & _____ that affecting aroma flavor

A

Genetic control & Sex hormone production

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14
Q

Long-term chiller aging cause

A

Increase of livery, bloody, bitter, and off-flavor

15
Q

Grass-based diet cause high meat pH and influence more ______&_____ compounds

A

thiazoles & thiophenones

16
Q

Irradiation can cause aroma flavor it depends on

A
  • Dose Level
  • Oxygen presence
  • Temperature ( radiolytic products formed)
  • pH ( low & normal- increase lipid oxidation, high - stable and resist to irradiation)
17
Q

If pH in the meat is increasing then ______ & ______ also increase

A

Color & N-containing compounds

18
Q

Common time of undesirable flavor changes and degrdation

A
  • re-cooked
  • chilled-stored
  • re-heated meat