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    • 7. 发明授权
    • Process for isolating plant extract fractions
    • 分离植物提取物馏分的方法
    • US5301694A
    • 1994-04-12
    • US789979
    • 1991-11-12
    • Wynn R. RaymondRobert W. Hale
    • Wynn R. RaymondRobert W. Hale
    • A24B15/24A24F1/16
    • A24B15/24Y10S131/905
    • Fractionated plant extracts, particularly essentially nicotine-free tobacco extracts, useful as tobacco flavorants and methods for preparing and using the same are described herein. These fractionated extracts are stable, non-volatile and relatively odorless under conditions of smoking article or smoking substitute article manufacture and storage, but when thermally provoked, the extracts deliver characteristic flavor to smoking articles or smoking substitute articles. The fractionated plant extracts may be prepared by contacting plant matter with a solvent to produce a crude plant extract; removing the solvent from this plant extract; and isolating a fraction of this extract that when thermally provoked provides the characteristic aroma and flavor of the plant by size exclusion chromatography and monitoring the fraction's integrity by suitable detection means.
    • 本文描述了可用作烟草调味剂的分馏植物提取物,特别是基本上不含烟碱的烟草提取物及其制备和使用方法。 这些分级提取物在吸烟制品或吸烟制品制造和储存的条件下是稳定的,不挥发的和相对无味的,但是当被热激发时,提取物将特征风味提供给吸烟制品或吸烟替代物品。 分离的植物提取物可以通过使植物物质与溶剂接触以制备粗植物提取物来制备; 从该植物提取物中除去溶剂; 并分离该提取物的一部分,当热激发时,通过尺寸排阻色谱法提供植物的特征香气和风味,并通过合适的检测手段监测级分的完整性。