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1. 发明授权

US5440027A Method for preparing saccharide fatty acid polyesters by transesterification 失效
标题翻译：通过酯交换制备糖类脂肪酸聚酯的方法
公开(公告)号：US5440027A
公开(公告)日：1995-08-08
申请号：US132106
申请日：1993-10-05
申请人： Gerry Hasenhuettl
发明人： Gerry Hasenhuettl
IPC分类号： C07H13/06 , C07H1/00 , C07H13/04
CPC分类号： C07H13/06
摘要： An improved method for the preparation of saccharide fatty acid polyesters via a two-step process is provided. In the first step, a saccharide is partially esterified so as to contain, on average, between about 1.5 to 3.5 lower acyl ester groups. In the second step, the partially esterified saccharide is reacted with a fatty acid-containing reagent (for example, fatty acids, fatty acid esters, salts of fatty acids, or fatty acid anhydrides) whereby the lower acyl ester groups and the hydroxyl groups on the partially esterified saccharide are replaced with fatty acid ester groups in a transesterification reaction to form a saccharide fatty acid polyesters. The use of a partially esterified saccharide as a reactant in the transesterification reaction allows for a more homogeneous reaction system, less caramelization or other decomposition reactions, and less low molecular weight ester by-product formation. The saccharide fatty acid polyesters, especially the sucrose fatty acid polyesters, are useful as fat substitutes or low-calorie fats in food compositions.
摘要翻译：提供了一种通过两步法制备糖类脂肪酸聚酯的改进方法。在第一步中，糖部分酯化，以便平均含有约1.5至3.5个较低酰基酯基团。在第二步中，将部分酯化的糖与含脂肪酸的试剂（例如脂肪酸，脂肪酸酯，脂肪酸的盐或脂肪酸酐）反应，由此将低级酰基酯基和羟基在部分酯化的糖在酯交换反应中被脂肪酸酯基取代，形成糖类脂肪酸聚酯。在酯交换反应中使用部分酯化的糖作为反应物允许更均匀的反应体系，较少焦糖化或其它分解反应，以及较低分子量的酯副产物形成。糖类脂肪酸聚酯，特别是蔗糖脂肪酸聚酯，可用作食品组合物中的脂肪替代物或低热量脂肪。

2. 发明授权

US5424420A Method for preparing saccharide polyesters by transesterification 失效
标题翻译：通过酯交换制备糖类聚酯的方法
公开(公告)号：US5424420A
公开(公告)日：1995-06-13
申请号：US132497
申请日：1993-10-05
申请人： Gerry Hasenhuettl , Laura Labeots
发明人： Gerry Hasenhuettl , Laura Labeots
IPC分类号： C07H13/06 , C07H1/00 , C07H13/04
CPC分类号： C07H13/06
摘要： An improved method for the preparation of saccharide fatty acid polyesters via an intermolecular transesterification reaction is provided. A saccharide lower acyl ester (for example, sucrose octaacetate) is reacted with a fatty acid lower alkyl ester (for example, methyl stearate) in the presence of an alkali metal alkoxide catalyst to produce a saccharide fatty acid polyester. The reaction is carried out at relatively low temperatures in the absence of solvent. The relatively low molecular weight by-produce ester is removed from the reaction mixture during the course of the reaction in order to drive the equilibrium transesterification reaction to completion. The saccharide fatty acid polyesters are useful as fat substitutes or low-calorie fats in food compositions.
摘要翻译：提供了通过分子间酯交换反应制备糖类脂肪酸聚酯的改进方法。在碱金属醇盐催化剂的存在下，将糖类低级酰基酯（例如，蔗糖八乙酸酯）与脂肪酸低级烷基酯（例如硬脂酸甲酯）反应，生成糖类脂肪酸聚酯。反应在不存在溶剂的情况下在相对低的温度下进行。在反应过程中从反应混合物中除去相对低分子量的副产物酯，以使平衡酯交换反应完成。糖类脂肪酸聚酯可用作食品组合物中的脂肪替代物或低热量脂肪。

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