Phenolic content and antioxidant activity of Ziziphus jujuba Mill. fruit extracts (notice n° 782924)
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| fixed length control field | 04376cam a2200301 4500500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250123112859.0 |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | fre |
| 042 ## - AUTHENTICATION CODE | |
| Authentication code | dc |
| 100 10 - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Adjdir, S. |
| Relator term | author |
| 245 00 - TITLE STATEMENT | |
| Title | Phenolic content and antioxidant activity of Ziziphus jujuba Mill. fruit extracts |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Date of publication, distribution, etc. | 2019.<br/> |
| 500 ## - GENERAL NOTE | |
| General note | 68 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The aim of this study is to evaluate the antioxidant activity of dried fruit extracts of Zizyphus jujuba Mill. Polyphenols and flavonoids content determined in aqueous extract (aq), hydromethanolic (EM), hydroacetonic (EA) extracts, and their ethyl acetate (Acet) and n-butanol (n-but) fractions reveal variable rates; 42.84–94.70 mg gallic acid equivalent per g extract and 47.02–427.33 mg catechin equivalent per g extract. The antioxidant activity was evaluated by different assays using total antioxidant capacity, 2,2-Diphenyl-1-picrylhydrazyl (DPPH), β-carotene bleaching assay, and ferric reducing antioxidant power (FRAP). In DPPH assay, all extracts showed an interesting scavenging effect, an estimated reduction rate about 75.58–97.71% was determined with the IC50 (the half maximal inhibitory concentration) values ranging from 12 to 503.6 μg/ml. In β-carotene bleaching assay, 500 μg/ml of each extract showed a large inhibition (51.14–85.01%) with IC50 values ranging from 48 to 462 μg/ml compared to butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA), and tannic acid 0.6, 2.00, and 461 μg/ml, respectively. The results of FRAP show that the crude extracts (aq ˃ EM ˃ EA) are less efficient than their fractions (Acet/aq˃ Acet/EA˃ n-but/EA) which demonstrate an important activity. Concerning total antioxidant capacity essay (TAC), the highest capacity was noticed for Acet/aq (71.98 μg gallic acid equivalents [GAE]/mg extract) and Acet/EA extract (64.62 μg GAE/mg of extract). The antioxidant activity of dried fruit extracts of Z. jujuba is mainly related to its polyphenol content essentially on flavonoids, which qualifies this species as a source of natural antioxidant. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Le but de cette étude est d'évaluer l'activité antioxydante des extraits du fruit sec de Zizyphus jujuba Mill. La teneur en polyphénols et en flavonoïdes déterminée dans l'extrait aqueux (Aq), hydrométhanolique (EM) et hydroacétonique (EA) ainsi que leurs fractions acétate d'éthyle (Acet) et n-butanol (n-but) révèlent des taux variables entre 42,84 et 94,70 mg équivalents (E)AG/g d'extrait et de 47,02 à 427,33 mg équivalents de catéchine/g d'extrait. L'activité antioxydante a été évaluée par différents tests en utilisant le test du DPPH, du blanchiment du β-carotène, du pouvoir réducteur du fer (FRAP) et de la capacité antioxydante totale (TAC). L'ensemble des extraits ont montré un effet intéressant sur le piégeage du radical libre DPPH avec un taux de réduction compris entre 97,71 à 75,58 %, ainsi que des valeurs d'IC50 qui varient entre 12 à 503,6 μg/ml. Dans le test du blanchiment du β-carotène, 500 μg/ml de chaque extrait a provoqué une forte inhibition (51,14 à 85,01 %) avec des valeurs d'IC50 qui passent de 48 à 462 μg/ml par rapport au BHA, au BHT et à l'acide tannique 0,6 ; 2,00 et 461 μg/ml, respectivement. Concernant la méthode du FRAP, les extraits bruts (Aq ˃ EM ˃ EA) sont moins efficaces par rapport à leurs fractions Acet et n-but (Acet/Aq ˃ Acet/EA ˃ n-but/EA) qui induisent une réduction du fer importante. Le test de la TAC a révélé une forte activité dans les extraits Acet/Aq (71,98 μg EAG/mg d'extrait) et Acet/EA (64,62 μg EAG/mg d'extrait). L'activité antioxydante des extraits du fruit sec de Zizyphus jujuba est principalement liée à sa teneur en polyphénols particulièrement en flavonoïdes, ce qui qualifie cette espèce comme source d'antioxydants naturels. |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Taux de polyphénols |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Activité antioxydante |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Mill. |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Zizyphus jujuba |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Antioxidant activity |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Ziziphus jujuba |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Mill. |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Phenolic content |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Benariba, N. |
| Relator term | author |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Laoufi, H. |
| Relator term | author |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Djaziri, R. |
| Relator term | author |
| 786 0# - DATA SOURCE ENTRY | |
| Note | Phytothérapie | 17 | 2 | 2019-04-01 | p. 74-82 | 1624-8597 |
| 856 41 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://shs.cairn.info/revue-phytotherapie-2019-2-page-74?lang=en&redirect-ssocas=7080">https://shs.cairn.info/revue-phytotherapie-2019-2-page-74?lang=en&redirect-ssocas=7080</a> |
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