Preparation method of gamma-valerolactone spice and application method in cigarettes

Abstract

The invention discloses a preparation method of gamma-valerolactone spice and an application method in cigarettes. The preparation method comprises the steps: using levulinate as a raw material; reacting for 3 to 5 hours at normal temperature and normal pressure in NaOH solution under the action of KBH4; decompressing for steaming out ethanol; regulating the pH of mother solution by dilute sulphuric acid; then extracting by ethyl acetate; drying by anhydrous sodium sulfate; standing over a night; decompressing; condensing; and obtaining the spice. The obtained spice is added to cigarette tobacco or tobacco groups by the dosage of 0.05% to 0.2% for smoking and commenting by sense organs. The spice increases and regulates cigarette fragrance and increases complete degree, mellow feel, fluency and sweet feel of the cigarette fragrance.

Description

technical field [0001] The invention relates to the preparation of gamma-valerolactone spice and its application method in cigarettes. technical background [0002] γ-valerolactone has a fresh fruity, medicinal, sweet aroma, and is soft and long-lasting. It can be used not only in food flavors and tobacco flavors, but also as solvents, organic synthesis intermediates, coatings and cleaning agents. At present, γ-valerolactone is widely used in industrial products, but there are very few reports on its application in cigarettes. [0003] At present, the industrial production of γ-valerolactone uses levulinic acid (biomass oxygen-containing compound) as a raw material, which is obtained by hydrogenation with a heterogeneous catalyst (Ru / C, etc.). Patent USP 5 883 266 discloses a process for the preparation of various products including 5-valerolactone from levulinic acid using a bifunctional catalyst, the first function of which is hydrogenation and the second function is ring...

AI Technical Summary

Problems solved by technology

However, the use of heterogeneous catalyst hydrogenation method to produce γ-valerolactone needs to consume a large amount of hydrogen, and will produce a small amount of 2-methyltetrahydrofuran (easy to generate peroxides, and there is a risk of explosion)

[0004] In short, the production process of this product requires the use of expensive copper or nickel and other precious metals as catalysts, or the production process requires relatively harsh conditions such as low pressure or high pressure, resulting in high cost, poor efficiency, and low safety.