Caffeoyl tartaric acid ester

For white wines (85), a similar HPLC condition to that of Betes-Saura et al. (79) was employed with a Nucleosil C)8 column (250 X 4.0-mm ID, 5 /zm) with binary gradient using eluent (A) acidified water (pH 2.65) and eluent (B) 20% A with 80% acetonitrile applied for hydroxy-cinnamate derivatives esters (caffeoyl tartaric, p-coumaroyl tartaric, and feruloyl tartaric acid esters) and free hydroxycinnamic acids (caffeic, ferulic, and p-coumaric acids). 

FIG. 7 The hydrolysis of the ester bond between the caffeoyl moiety and tartaric acid in cichoric acid (1) to give caftaric (2) and caffeic (3) acids as proposed by Niisslein et al... 

Organic acids Tartaric acid (D 1.2) Caffeoyl ester = cichoric acid... 

Inhibitory effects on hyaluronidase by caffeoyl esters, caffeic acid and tartaric acid [48]. 

From the leaves of . purpurea, cichoric acid methyl ester, as well as 2-O-caf-feoyl-3-O-feruloyl-tartaric acid and 2,3-O-diferuloyl-tartaric acid were isolated [83]. Later 2-0 feruloyl-tartaric acid and 2-0-caffeoyl-3-0-cumaroyl-tartaric acid were found [107]. 

Phenolic compounds have sometimes been used to detect adulterations of fruit juices and jams. Most of them are flavonols, but some HCA derivatives can be used since they are typical of some fruit species such as tartaric derivatives in grape. For example, grape juice can be detected by the presence of caffeoyl-, / -coumaroyl-, and feruloyl-tartaric acids, whereas the presence of quinic esters of HCA would imply adulteration with other fruits. A method has also been developed for detection and quantitation of pulpwash, a lower-quality juice product, in orange juice [9] feruloyl and sinapoyl glucose, in addition to different other phenolic compounds, were present in much larger amounts in pulpwash. 

Grape musts and wines contain depsides of some phenolic acids with L-tartaric acid. Common esters are depsides of caffeic (8-89), 4-coumaric and vanillic acids. For example, the vanilloyltartaric acid content in musts and wines ranges from 1.4 to 11.7 mg/1, and of 4-coumaroyltartaric (cutaric) acid and calFeoyltartaric (caftaric) acid is 0.6-5.5 and 10.2-26.9 mg/1, respectively. In all these depsides, (E)-isomers dominate. 2,3-Di-O-caffeoyl-L-tartaric acid, known as cichoric acid (8-90), is an example of diesters of i-tartaric acid, which occur in plants of the Asteraceae family. Cichoric acid is situated in the root and leaves of chicory Cichorium intybus), endive (C. endivia) and lettuce Lactuca sativa). 

Phenolic acids of E. arvense include di- -caffeoyl-me50-tartaric acid methy esters of protocatechuic and caffeic acids aconitic, oxalic, malic, tannic, arahinoic, and threonic acids minerals, including silicic acid and silicates (5-8%) water soluble up to 80%, potassium, aluminum, and manganese sterols, including campesterol isocuosterol, and brassinosteroids and others. Trace amounts of nicotine have been found in E. arvense ... 

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