Phenolic profile, antioxidant activity and enzyme inhibitory capacities of fruit and seed extracts from different Algerian cultivars of date (Phoenix dactylifera L.) were affected by in vitro simulated gastrointestinal digestion

2021 ◽  
Vol 137 ◽  
pp. 133-148
Author(s):  
Ouarda Djaoudene ◽  
Inês Mansinhos ◽  
Sandra Gonçalves ◽  
M. José Jara-Palacios ◽  
Mostapha Bachir bey ◽  
...  
2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Eimad Dine Tariq Bouhlali ◽  
Mgal Derouich ◽  
Abdelbassat Hmidani ◽  
Bouchra Bourkhis ◽  
Tarik Khouya ◽  
...  

Phoenix dactylifera L. (date palm) seeds have been mentioned in the Moroccan pharmacopoeia as efficient remedies against a wide range of diseases including hepatic and gastrointestinal disorders and countless infections. The current work was performed to assess the phenolic profile and hepatoprotective potential of two date seed varieties, locally known as Jihl and Majhoul, aqueous extracts against paracetamol- (PCM-) driven liver toxicity in 42 Wistar rats. The polyphenol profile was built by means of an HPLC analysis. Hepatic damage was provoked by exposing rats to PCM at a dose of 1.5 g/kg once a week. Besides PCM, Jihl and Majhoul date seed extracts (200 and 400 mg/kg) were administered orally in a day-to-day routine. Our findings showed that among the examined polyphenol compounds, p-coumaric acid, quercetin, caffeic acid, and rutin were the most abundant phytochemicals. Date pits significantly ( p < 0.001 ) stabilized the PCM-driven alterations in liver function parameters (AST, ALT, ALP, LDH, total protein, direct bilirubin, and total bilirubin). Moreover, Phoenix dactylifera pits enhanced considerably ( p < 0.001 ) the activities of antioxidant enzymes (SOD, CAT, and GPx) as well as the level of reduced glutathione (GSH). The established hepatoprotective effect may be due to the date seeds antioxidant effect and their ability to trap free radicals. The main outcomes of the present study could validate the traditional use of these date seeds to manage various health conditions.


2016 ◽  
Vol 196 ◽  
pp. 1293-1300 ◽  
Author(s):  
Claisa Andréa Silva Freitas ◽  
Ícaro Gusmão Pinto Vieira ◽  
Paulo Henrique Machado Sousa ◽  
Celli Rodrigues Muniz ◽  
Maria Leônia da Costa Gonzaga ◽  
...  

2020 ◽  
Vol 51 ◽  
pp. 102085
Author(s):  
Filipa B. Pimentel ◽  
Maria Cermeño ◽  
Thanyaporn Kleekayai ◽  
Susana Machado ◽  
Andreia Rego ◽  
...  

Author(s):  
Habchi A. ◽  
Dekmouche M. ◽  
Hamia C. ◽  
Saidi M. ◽  
Yousfi M. ◽  
...  

This study was designed to evaluate the antioxidant activity of phenolic compounds for six cultivars of date from In Saleh region (Phoenix dactylifera L.), which were extracted by reflux with solvents, 80% methanol and 70% aceton after the phenolic and flavonoid content were estimated. The total phenolic content (TPC) and total flavonoid content (TFC) of the extracts were measured using Folin–Ciocalteau and aluminum chloride colorimetric methods, respectively. Antioxidant activity acetone/H2O and methanol/H2O extracts using ABTS, DPPH, FRAP, TAC and CUPRAC assays. The results showed that methanolic solvent reflux gives better yields. The highest level of phenolic compounds for all dates varieties was found in the 80% methanol extract. This level ranged from 8.04 ± 0.14 to 46.81 ± 1.22 mg GAE/100 g fresh weight and flavonoid content was observed relatively low for both two solvents. However, extraction into 70% acetone gave the highest antioxidant activity with all assay. These results showed that dates had strongly scavenging activity on DPPH reaching 3.12 µg/mL in methanol/H2O from Cul1 (6.9 µg/mL with ascorbic acid), also on ABTS reaching 6.51 µg/mL in acetone/H2O from Cul2 (104.98 µg/mL with ascorbic acid).


Sign in / Sign up

Export Citation Format

Share Document