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Flavor. FDSC 400. Flavor -Taste (trigeminal response) and Aroma-. VAPOR. FOOD. What type of molecules do you expect to have an aroma?. Basic Tastes. Sweet Salt Sour Bitter. Example Tastes. Sweet (sugar, saccharin) Sour (acids) Salt (err…) Bitter (caffeine, theobromine, quinine)

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flavor

Flavor

FDSC 400

flavor taste trigeminal response and aroma
Flavor-Taste (trigeminal response) and Aroma-

VAPOR

FOOD

What type of molecules do you expect to have an aroma?

basic tastes
Basic Tastes
  • Sweet
  • Salt
  • Sour
  • Bitter
example tastes
Example Tastes
  • Sweet (sugar, saccharin)
  • Sour (acids)
  • Salt (err…)
  • Bitter (caffeine, theobromine, quinine)
  • Umami (monosodium glutamate)
example trigeminal stimulants
Example Trigeminal Stimulants
  • Heat (capsaicin)
  • Cooling (menthol – also some aroma component)
  • Astringent (cold tea, banana peel)
molecular basis of sweetness
Molecular Basis of Sweetness
  • -OH groups (but chloroform is sweet)
  • Acree Shallenberger AH/B concept
ah b model

Terry Acree (Cornell)

AH/B Model

AH – Weak acid, B - electronegative group

aroma terms
Aroma Terms
  • Character impact compound
  • Flavor notes
  • Threshold values
sources of aromas in food
Sources of Aromas in Food
  • Natural flavors
    • herbs and spices (Reaction after cutting)
    • Fruit (Biosynthesis during ripening)
  • Process flavors
    • browning
    • lipid oxidation
    • fermentations
  • Artificial flavors
    • character impact compounds
allium sp onions garlic shallots leeks
Allium sp.(onions, garlic, shallots, leeks)

S-(1-propenyl)-L-cysteine sulfoxide

Allinase

1-propenyl sulfenic acid

Chemical

Rearrangement w/heat

Chemical

rearrangement

Mercaptans

Disolfides

Trisulfides

Thiopropanal S-oxide

(lachrymator)

lipoxygenase generated flavors
Lipoxygenase Generated Flavors

“green”

“melon, cucumber”

terpenoids
Terpenoids

(oranges)

(grapefruit)

herbs and spices
Herbs and Spices
  • Herbs: Aromatic soft-stemmed plants
  • Spices: All other aromatic plant materials
    • Roots
    • Buds
    • Seeds
    • Bark
vanilla
Vanilla

Vanillin

Seed pods of Planifolia

(a tropical orchid)

volatile blends
Volatile Blends
  • Peppermint: Menthol, menthone, menthofuran
  • Spearmint; Carvone, carvone derivatives
  • Nutmeg: Sabinine, pinene, myristicin
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