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Total oxidant scavenging capacity of Euterpe oleracea Mart. (açaí) seeds and identification of their polyphenolic compounds.
J Agric Food Chem. 2006 Jun 14; 54(12):4162-7.JA

Abstract

The antioxidant capacity of methanol and ethanol seed extracts from Euterpe oleracea Mart. (açaí) against the reactive oxygen species (ROS) peroxyl radicals, peroxynitrite, and hydroxyl radicals was studied with the total oxidant scavenging capacity (TOSC) assay in a modified and automated version. Cold methanol digestion was the most efficient extraction method with respect to the antioxidant capacity. The extracts exhibit good antioxidant capacity against peroxyl radicals, similar to the capacity of the pulp. The antioxidant capacity against peroxynitrite and hydroxyl radicals is even higher. The main antioxidants identified by HPLC-MS and HPLC-CEAD are five different procyanidins (di- through pentamers); furthermore, protocatechuic acid and epicatechin were identified as minor compounds. Determination of TOSC values of HPLC seed extract fractions indicates that the procyanidins contribute substantially to the overall antioxidant capacity. In addition, however, other compounds that have not yet been identified are responsible for a large part of the observed antioxidant capacity.

Authors+Show Affiliations

Institute of Nutrition and Food Sciences, Department of Food Chemistry I, University of Bonn, Endenicher Allee 11-13, D-53115 Bonn, Germany.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16756342

Citation

Rodrigues, Roberta B., et al. "Total Oxidant Scavenging Capacity of Euterpe Oleracea Mart. (açaí) Seeds and Identification of Their Polyphenolic Compounds." Journal of Agricultural and Food Chemistry, vol. 54, no. 12, 2006, pp. 4162-7.
Rodrigues RB, Lichtenthäler R, Zimmermann BF, et al. Total oxidant scavenging capacity of Euterpe oleracea Mart. (açaí) seeds and identification of their polyphenolic compounds. J Agric Food Chem. 2006;54(12):4162-7.
Rodrigues, R. B., Lichtenthäler, R., Zimmermann, B. F., Papagiannopoulos, M., Fabricius, H., Marx, F., Maia, J. G., & Almeida, O. (2006). Total oxidant scavenging capacity of Euterpe oleracea Mart. (açaí) seeds and identification of their polyphenolic compounds. Journal of Agricultural and Food Chemistry, 54(12), 4162-7.
Rodrigues RB, et al. Total Oxidant Scavenging Capacity of Euterpe Oleracea Mart. (açaí) Seeds and Identification of Their Polyphenolic Compounds. J Agric Food Chem. 2006 Jun 14;54(12):4162-7. PubMed PMID: 16756342.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Total oxidant scavenging capacity of Euterpe oleracea Mart. (açaí) seeds and identification of their polyphenolic compounds. AU - Rodrigues,Roberta B, AU - Lichtenthäler,Ramona, AU - Zimmermann,Benno F, AU - Papagiannopoulos,Menelaos, AU - Fabricius,Heinz, AU - Marx,Friedhelm, AU - Maia,José G S, AU - Almeida,Ossalin, PY - 2006/6/8/pubmed PY - 2006/8/9/medline PY - 2006/6/8/entrez SP - 4162 EP - 7 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 54 IS - 12 N2 - The antioxidant capacity of methanol and ethanol seed extracts from Euterpe oleracea Mart. (açaí) against the reactive oxygen species (ROS) peroxyl radicals, peroxynitrite, and hydroxyl radicals was studied with the total oxidant scavenging capacity (TOSC) assay in a modified and automated version. Cold methanol digestion was the most efficient extraction method with respect to the antioxidant capacity. The extracts exhibit good antioxidant capacity against peroxyl radicals, similar to the capacity of the pulp. The antioxidant capacity against peroxynitrite and hydroxyl radicals is even higher. The main antioxidants identified by HPLC-MS and HPLC-CEAD are five different procyanidins (di- through pentamers); furthermore, protocatechuic acid and epicatechin were identified as minor compounds. Determination of TOSC values of HPLC seed extract fractions indicates that the procyanidins contribute substantially to the overall antioxidant capacity. In addition, however, other compounds that have not yet been identified are responsible for a large part of the observed antioxidant capacity. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/16756342/Total_oxidant_scavenging_capacity_of_Euterpe_oleracea_Mart___açaí__seeds_and_identification_of_their_polyphenolic_compounds_ DB - PRIME DP - Unbound Medicine ER -