Quantitation of Thioprolines in Grape Wine by Isotope Dilution-Liquid Chromatography-Tandem Mass Spectrometry was written by Liu, Jingjing;Meng, Xiangpeng;Wan, Chan. And the article was included in Journal of Agricultural and Food Chemistry in 2016.Related Products of 444-27-9 This article mentions the following:
Cysteine reacts with reactive carbonyls to form thioprolines, which have been demonstrated to possess various pharmaceutical properties. Therefore, thioproline formation is considered as a major detoxification pathway for carcinogenic reactive carbonyls. In this study, we report the initial identification of thiazolidine-4-carboxylic acid (1) and 2-methylthiazolidine-4-carboxylic acid (2), two very common thioprolines, formed by reacting formaldehyde and acetaldehyde with cysteine in grape wine samples. We have developed an isotope dilution-liquid chromatog.-tandem mass spectrometry method featuring high sensitivity (limit of detection of ≤1.5 ng/mL) and selectivity to quantitate compounds 1 and 2. The method after validated to be highly accurate (recovery of ≥92%) and precise [intraday relative standard deviation (RSD) of ≤4.1% and interday RSD of ≤9.7%] was applied to determine the varying compound 1 and 2 contents in grape wine samples. Results revealed the grape type and storage duration-dependent formation of thioprolines in grape wines. Overall, the results are expected to facilitate compound-dependent investigations of the health benefits of grape wine, and our findings could be adopted to predict the age of grape wine. In the experiment, the researchers used many compounds, for example, Thiazolidine-4-carboxylic acid (cas: 444-27-9Related Products of 444-27-9).
Thiazolidine-4-carboxylic acid (cas: 444-27-9) belongs to thiazolidine derivatives. In the thiazolidine nucleus, a large number of substitutions are possible on 2, 4 and 5 positions responsible for enhancing the compound’s pharmaceutical importance. Thiazolidine and its composites are key components of many natural products and drugs , and are also present in many synthetic compounds such as anticancer, anti-inflammatory, antitubercular, antifungal, antiviral, anti-HIV, cytotoxicity, antitrypanosomal, antinociceptive and anti-hypernociceptive compounds.Related Products of 444-27-9
Referemce:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com