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US 5,401,521 AGranted
Preparation of 2-acetyl-1-pyrroline compositions
AssigneeNestec S.A.
InventorsPhilippe Duby, Tuong Huynh-Ba
Life of this patent
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Abstract
2-acetyl-1-pyrroline is prepared by hydrolyzing a 2-(1-alkoxyethenyl)-1-pyrroline compound with an acid and then the reaction medium is neutralized with an equimolar amount of a base to obtain a neutralized reaction medium containing the 2-acetyl-1-pyrroline. A cyclodextrin and/or maltodextrin support material is added to the neutralized medium which then is freeze-dried to isolate the 2-acetyl-1-pyrroline with the support to obtain the 2-acetyl-1-pyrroline incorporated with the support material.
Claims11
A process for preparing a flavoring composition comprising:
- hydrolyzing a 2-(1-alkoxyethenyl)-1-pyrroline compound with an acid to obtain a reaction medium;
- adding an equimolar amount of a base to the reaction medium to obtain a neutralized reaction medium containing 2-acetyl-1-pyrroline;
- combining cyclodextrin and the neutralized reaction medium so that a support solution containing up to 20% 2-acetyl-1-pyrroline by weight based on the weight of the cyclodextrin is obtained;
- and
- freeze-drying the support solution to obtain a powder.
2 more elements
A process for preparing a flavoring composition comprising:
- hydrolyzing a 2-(1-alkoxyethenyl)-1-pyrroline with an acid to obtain a reaction medium;
- adding an equimolar amount of a base to the reaction medium to obtain a neutralized reaction medium containing 2-acetyl-1-pyrroline;
- combining maltodextrin and the neutralized reaction medium so that a support solution containing up to 10% 2-acetyl-1-pyrroline by weight based on the weight of the maltodextrin is obtained;
- and
- freeze-drying the support solution to obtain a powder.
2 more elements
Dependencies are inferred from the claim text.