The present invention comprises a new class of 2,3,4-tri-O-acylhexoses and mixtures thereof. Members of the new class of compounds are comprised of a hexose sugar having fatty acids attached at the 2, 3 and 4 positions of the hexose moiety. The fatty acids can be saturated or unsaturated, and can have a relative molecular size of up to C30. When at least one of the acylating fatty acid groups on the hexose molecule contains more than 7 carbons, the resulting 2,3,4-tri-O-acylhexoses (or mixtures thereof) have a non-bitter taste. On the other hand, when none of the acylating fatty acids have more than 7 carbons, the resulting 2,3,4-tri-O-acylhexoses (and mixtures that contain them) are bitter when tasted.
The new 2,3,4-tri-O-acylhexoses can be synthesized using known chemical methods.
Alternatively, the new compounds, and especially mix- turesthereof, are obtained as the resultofselective extraction and purification of the epicuticular exudate from Lycopersicon pennellii plant parts. Mixtures of 2,3,4-tri-O-acylhexoses, especially as found in the Lycopersicon pennellii natural plant extract, or the glucolipid fraction thereof, are useful as evaporation suppressants, antitranspirants and antidesiccants. The Lycopersicon pennellii natural plant ex- tractis also useful as an ingredientin cosmeticandtoiletryfor- mulations, while the non-bitter glucolipid subfraction is especially useful as a "low calorie" substituteforfats in foods.
本发明包括一类新的 2,3,4-三-O-酰基己糖及其混合物。这一类新化合物由在六糖分子的 2、3 和 4 位上连接有
脂肪酸的六糖组成。
脂肪酸可以是饱和或不饱和的,相对分子大小可达 C30。当己糖分子上至少有一个酰化
脂肪酸基团含有超过 7 个碳原子时,生成的 2,3,4-三-O-酰基己糖(或其混合物)就会有一种非苦味。另一方面,当酰化
脂肪酸的碳原子数都不超过 7 个时,生成的 2,3,4-三-O-酰基己糖(以及含有它们的混合物)在品尝时会有苦味。
新的 2,3,4-三-O-酰基己糖可以用已知的
化学方法合成。
另外,新化合物,特别是其中的混合物,是通过选择性提取和纯化番荔枝(Lycopersicon pennellii)植物部分的表皮渗出物而获得的。2,3,4-三-O-酰基己糖的混合物,特别是在番荔枝天然
植物提取物中发现的混合物,或其葡
糖脂部分,可用作蒸发
抑制剂、防吸剂和防干燥剂。
番茄红素天然
植物提取物还可用作化妆品和厕所制剂的成分,而无苦味的葡
糖脂亚组分尤其可用作食品中 "低热量 "脂肪的替代品。