delta-Nonalactone

Description

Hydroxynonanoic acid, δ-lactone has a mild, nut-like odor and a fatty, milk-creamy taste. May be prepared by microbiological reduction of the corresponding keto acids, by a patented process.

Chemical properties

Hydroxynonanoic acid, δ-lactone has a mild, nut-like odor and a fatty, milk-creamy taste

Occurrence

Reported as responsible for the off-flavor in milk fat. Also found in melon, butter, chicken fat, grilled beef, cured pork, pork fat and liver, beer, malt and bourbon whiskey, cognac, rum, white wine, black tea, asparagus, mango, starfruit, mountain papaya and cooked shrimps

The Uses of delta-Nonalactone

Suggested uses are in curry, nut, tomato, tropical, caramel and dairy flavors. In fragrance applications, this compound delivers apricot, butter, grape, passion fruit, plum, tea green and tobacco notes.

Preparation

By microbiological reduction of the corresponding keto acids; by a patented process

Definition

ChEBI: 6-Butyltetrahydro-2H-pyran-2-one is a delta-lactone.

Taste threshold values

Taste characteristics at 10 ppm: creamy, coconut, lactonic, sweet and dairy-like with milky nuances.