Phenolic Components of Date Fruits Possessing Antioxidant Activity

• Published in: Digestive diseases and sciences Vol. 59; no. 8; p. 1666
• Main Authors: Tekes, K, Antus, S, Kalasz, H, Adeghate, E, Szoke, E, Kursinszki, L, Gulacsi, K, Kiss-Szikszai, A, Adem, A
• Format: Journal Article
• Language: English
• Published: Springer 23.05.2022
• Subjects: Antioxidants; Bioflavonoids; Flavones; Flavonoids; Fruit
• ISSN: 0163-2116; 1573-2568
• DOI: 10.1007/s10620-014-3278-0

Total phenolic content and antioxidant/oxygen free radical scavenger capacity of five variants of palm date fruits have been determined and compared. Differences were found among the variants studied, indicating that selection of the type of the fruit is crucial in achieving significant antioxidant effect and has definite consequences in the ingestion of xenobiotics. Various flavonoid glycosides of some date fruit samples were earlier identified using HPLC-MS-MS technique. Differences in the flavonoid glycoside content is considered to determine the free radical scavenger capacity of the different palm date fruit variants. The radical scavenging activity of the extracts was determined using the method of Nenadis et al. [Nenadis N, Tsimidou M. Observation on the estimation of scavenging activity of phenolic compounds using rapid 1,1-diphenyl-2-picrylhydrazyl (DPPH) tests. J. Am. Oil Chem. Soc., 2002; 12:1191-95.] When a standard (quercetin) shows 95%, Fardh, Khalas, Almedina, Khenaiz and Lulu (different brand names of date fruits) gave 87.8, 89.4, 88.5, 85.7 and 89.3% of scavenger activity, respectively. Our findings definitely suggest the need of a careful selection among the variety of date fruits even in the case when the fruit having been verified with cytoprotective action. Support: Grant T100155 of OTKA (Hungarian National Granting Agency, Budapest, Hungary).