公开(公告)号：US5681604A

公开(公告)日：1997-10-28

申请号：US84524

申请日：1993-06-29

Applicant: Hualin Li ,  Mongia Gagan ,  C. Paul Malone ,  Robert W. Keown

Inventor： Hualin Li ,  Mongia Gagan ,  C. Paul Malone ,  Robert W. Keown

IPC: A23L1/275 ,  D06M13/148 ,  D06M13/165 ,  D06M13/224 ,  D06M13/238 ,  D06M15/03 ,  A23L1/27

CPC classification number: D06M13/224 ,  A23L5/42 ,  D06M13/148 ,  D06M13/165 ,  D06M13/238 ,  D06M15/03

Abstract: The staining effect (particularly with respect to the staining of polyamides) of a colorant such as a dye used in foods and beverages is inhibited by a compound of the formula ##STR1## wherein: Z.sup.1, Z.sup.2, and Z.sup.3 are the same or different and are each a bridging radical or a direct bond, Ar.sup.1, Ar.sup.2, and Ar.sup.3 are the same or different and are aromatic or bicyclic radicals; Q is a fused, partially aromatic bicyclic radical, or Q is a carbohydrate residue having a non-repeating structure, in which case m is 1, or Q is a carbohydrate having repeating saccharide units, in which case Q along with its substituents is repeated m times, where m is the number of said repeating saccharide units, but when Q is not a carbohydrate residue, m is 1; R.sup.1, R.sup.2, and R.sup.3 are H or polyhydroxybenzoyl, R.sup.4, R.sup.5 and R.sup.6 are H or the residue of an esterified alcohol,x, y, and z are from 2 to 3, a, b, and c are from 0 to 1, n is from 0 to 1, except that when Q is an oligo- or polysaccharide having terminal saccharide units, n, in the terminal saccharide units, is from 0 to 2, and when n is zero, --Z.sup.1 --Q.sub.m --Z.sup.2 -- is optionally a direct bond. Examples of these stain-inhibiting compounds include tannic acid, green tea extract, epicatechin gallate, and the reaction product of gallic acid and a carbohydrate.

Abstract translation: 着色剂如食品和饮料中使用的染料的染色效果（特别是关于聚酰胺的染色）被下式化合物抑制：其中：Z1，Z2和Z3相同或不同， Ar1，Ar2和Ar3均相同或不同，为芳族或双环基团; Q是稠合的部分芳族双环基团，或Q是具有非重复结构的碳水化合物残基，在这种情况下m为1，或Q为具有重复糖单元的碳水化合物，在这种情况下Q与其取代基重复 m次，其中m为所述重复糖单元的数目，但当Q不为碳水化合物残基时，m为1; R 1，R 2和R 3为H或多羟基苯甲酰基，R 4，R 5和R 6为H或酯化醇的残基x，y和z为2至3，a，b和c为0至1， n为0〜1，除了当Q为具有末端糖单元的寡糖或多糖时，末端糖单元中的n为0〜2，当n为0时，-Z1-Qm-Z2-为 可选地是直接键。 这些抑菌化合物的实例包括单宁酸，绿茶提取物，表儿茶素没食子酸酯，以及没食子酸和碳水化合物的反应产物。