Ethyl p-hydroxyphenyllactate - CAS 62517-34-4
Catalog number: 62517-34-4
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Ethyl p-hydroxyphenyllactate is a natural compound found in several plants.
3-(4-Hydroxyphenyl)lactic acid ethyl ester;Ethyl 2-hydroxy-3-(4-hydroxyphenyl)propanoate
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1.Antioxidant constituents in distillation residue of Awamori spirits.
Takaya Y;Furukawa T;Miura S;Akutagawa T;Hotta Y;Ishikawa N;Niwa M J Agric Food Chem. 2007 Jan 10;55(1):75-9.
Constituents in a distillation residue of Awamori (millet spirits) and their antioxidant activity are investigated in this study. The supernatant of the distillation residue obtained by centrifugation was partitioned with n-hexane, chloroform, ethyl acetate, and n-butanol against water to afford the corresponding solubles. Among them, n-hexane and chloroform solubles showed higher antioxidant potency than l-ascorbic acid by the bleomycin-Fe method. In chloroform solubles, seven cyclic dipeptides were identified along with ethyl 2-pyrrolidione-5-carboxylate, tyrosol, and ethyl p-hydoroxyphenyllactate. Antioxidant activity of ethyl p-hydoroxyphenyllactate was 4.2 times that of l-ascorbic acid, whereas cyclic dipeptides showed activity 0.89-1.29 times as strong as that of l-ascorbic acid. On the other hand, scavenging effect of cyclic dipeptides against O(2)(-.) and OH(.) by using electron spin resonance was also investigated. In the results, cyclo(l-Ile-l-Pro) showed significantly strong inhibitory effect against OH(.) (95.4% at 2.5 x 10-3 M) and cyclo(l-Phe-l-Pro), cyclo(l-Pro-l-Val), and cyclo(l-Leu-l-Pro) inhibited OH(.) 64.9, 54.1, and 51.0%, respectively, whereas alpha-tocopherol showed 37.
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