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Seasonal, gender and regional variations in total phenolic, flavonoid, and condensed tannins contents and in antioxidant properties from Pistacia atlantica ssp. leaves.
Pharm Biol. 2017 Dec; 55(1):1185-1194.PB

Abstract

CONTEXT

The widespread use of Pistacia atlantica Desf. ssp. (Anacardiaceae) in traditional medicine can be partly attributed to the content of its secondary metabolites, in particular, the phenolic compounds.

OBJECTIVE

The effects of harvest period, growing region and gender on the phenolic compounds, flavonoids and condensed tannins contents were studied, as well as on the antioxidant activities of P. atlantica leaves in order to provide a scientific basis for optimal collection.

MATERIALS AND METHODS

Leaves were collected monthly from April to October 2010 in two Algerian sites. The powdered leaves were used for preparing the ethyl acetate extract. Contents of total phenolics (TPC), flavonoids (FC) and condensed tannins (CTC) were determined spectrophotometrically. Antioxidant activity was evaluated through radical scavenging activity (RSA) of 2,2-diphenyl-1-picrylhydrazyl (250 μM) and the reducing power capacity (RPC) determination by K3Fe(CN)6 (1%).

RESULTS

The TPC was found to vary from 79 ± 13 to 259 ± 8 mg gallic acid equivalents/g of dry weight (DW) during the study period. The RSA and RPC varied between 262 ± 18 and 675 ± 21 mg Ascorbic Acid Equivalent (AAE)/g DW, and from 259 ± 16 to 983 ± 20 mg AAE/g DW, respectively. A seasonal pattern was observed consisting of a decrease in TPC content and RPC from spring to autumn. The FC, CTC and RSA did not show a seasonal pattern.

DISCUSSION AND CONCLUSION

Our findings showed that secondary metabolite content and antioxidant activities of P. atlantica leaves were more influenced by harvest time and growing region than by gender.

Authors+Show Affiliations

a Laboratory of Fundamental Science , University Amar Telidji , Laghouat , Algeria. b Department of Analytical Chemistry and Pharmaceutical Technology , Vrije Universiteit Brussel (VUB) , Brussels , Belgium.a Laboratory of Fundamental Science , University Amar Telidji , Laghouat , Algeria.b Department of Analytical Chemistry and Pharmaceutical Technology , Vrije Universiteit Brussel (VUB) , Brussels , Belgium.b Department of Analytical Chemistry and Pharmaceutical Technology , Vrije Universiteit Brussel (VUB) , Brussels , Belgium. c Laboratory of Instrumental Analysis and Bioelectrochemistry , Université Libre de Bruxelles (ULB) , Bruxelles , Belgium.d Department of Toxicology, Dermato-Cosmetology and Pharmacognosy , Vrije Universiteit Brussel (VUB) , Brussels , Belgium.b Department of Analytical Chemistry and Pharmaceutical Technology , Vrije Universiteit Brussel (VUB) , Brussels , Belgium.b Department of Analytical Chemistry and Pharmaceutical Technology , Vrije Universiteit Brussel (VUB) , Brussels , Belgium.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28245729

Citation

Ben Ahmed, Ziyad, et al. "Seasonal, Gender and Regional Variations in Total Phenolic, Flavonoid, and Condensed Tannins Contents and in Antioxidant Properties From Pistacia Atlantica Ssp. Leaves." Pharmaceutical Biology, vol. 55, no. 1, 2017, pp. 1185-1194.
Ben Ahmed Z, Yousfi M, Viaene J, et al. Seasonal, gender and regional variations in total phenolic, flavonoid, and condensed tannins contents and in antioxidant properties from Pistacia atlantica ssp. leaves. Pharm Biol. 2017;55(1):1185-1194.
Ben Ahmed, Z., Yousfi, M., Viaene, J., Dejaegher, B., Demeyer, K., Mangelings, D., & Vander Heyden, Y. (2017). Seasonal, gender and regional variations in total phenolic, flavonoid, and condensed tannins contents and in antioxidant properties from Pistacia atlantica ssp. leaves. Pharmaceutical Biology, 55(1), 1185-1194. https://doi.org/10.1080/13880209.2017.1291690
Ben Ahmed Z, et al. Seasonal, Gender and Regional Variations in Total Phenolic, Flavonoid, and Condensed Tannins Contents and in Antioxidant Properties From Pistacia Atlantica Ssp. Leaves. Pharm Biol. 2017;55(1):1185-1194. PubMed PMID: 28245729.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Seasonal, gender and regional variations in total phenolic, flavonoid, and condensed tannins contents and in antioxidant properties from Pistacia atlantica ssp. leaves. AU - Ben Ahmed,Ziyad, AU - Yousfi,Mohamed, AU - Viaene,Johan, AU - Dejaegher,Bieke, AU - Demeyer,Kristiaan, AU - Mangelings,Debby, AU - Vander Heyden,Yvan, PY - 2017/3/2/entrez PY - 2017/3/2/pubmed PY - 2017/3/14/medline KW - DPPH assay KW - Pistacia atlantica leaves KW - RPC assay KW - Total phenolic content KW - condensed tannins content KW - flavonoids content SP - 1185 EP - 1194 JF - Pharmaceutical biology JO - Pharm Biol VL - 55 IS - 1 N2 - CONTEXT: The widespread use of Pistacia atlantica Desf. ssp. (Anacardiaceae) in traditional medicine can be partly attributed to the content of its secondary metabolites, in particular, the phenolic compounds. OBJECTIVE: The effects of harvest period, growing region and gender on the phenolic compounds, flavonoids and condensed tannins contents were studied, as well as on the antioxidant activities of P. atlantica leaves in order to provide a scientific basis for optimal collection. MATERIALS AND METHODS: Leaves were collected monthly from April to October 2010 in two Algerian sites. The powdered leaves were used for preparing the ethyl acetate extract. Contents of total phenolics (TPC), flavonoids (FC) and condensed tannins (CTC) were determined spectrophotometrically. Antioxidant activity was evaluated through radical scavenging activity (RSA) of 2,2-diphenyl-1-picrylhydrazyl (250 μM) and the reducing power capacity (RPC) determination by K3Fe(CN)6 (1%). RESULTS: The TPC was found to vary from 79 ± 13 to 259 ± 8 mg gallic acid equivalents/g of dry weight (DW) during the study period. The RSA and RPC varied between 262 ± 18 and 675 ± 21 mg Ascorbic Acid Equivalent (AAE)/g DW, and from 259 ± 16 to 983 ± 20 mg AAE/g DW, respectively. A seasonal pattern was observed consisting of a decrease in TPC content and RPC from spring to autumn. The FC, CTC and RSA did not show a seasonal pattern. DISCUSSION AND CONCLUSION: Our findings showed that secondary metabolite content and antioxidant activities of P. atlantica leaves were more influenced by harvest time and growing region than by gender. SN - 1744-5116 UR - https://www.unboundmedicine.com/medline/citation/28245729/Seasonal_gender_and_regional_variations_in_total_phenolic_flavonoid_and_condensed_tannins_contents_and_in_antioxidant_properties_from_Pistacia_atlantica_ssp__leaves_ L2 - https://www.tandfonline.com/doi/full/10.1080/13880209.2017.1291690 DB - PRIME DP - Unbound Medicine ER -