Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/108778
Type: Artigo de periódico
Title: Identification Of Bioactive Compounds From Jambolão (syzygium Cumini) And Antioxidant Capacity Evaluation In Different Ph Conditions
Author: Faria A.F.
Marques M.C.
Mercadante A.Z.
Abstract: The composition of carotenoids and phenolic compounds from jambolão fruits (Syzygium cumini) was determined by HPLC-DAD-MS/MS. Two main carotenoids were found in the fruits, all-trans-lutein (43.7%) and all-trans-β-carotene (25.4%). The anthocyanin composition was characterised by the presence of 3,5-diglucosides of five out of six aglycones commonly found in foods. This pattern was also observed for the other flavonoids, since diglucosides of dihydromyricetin, methyl-dihydromyricetin and dimethyl-dihydromyricetin, along with myricetin glucoside and a galloyl-glucose ester were identified. Furthermore, the antioxidant capacity of a functional extract rich in anthocyanins was evaluated through the scavenging capacities of ABTS + and peroxyl radical (ORAC) and the protective effect against singlet oxygen ( 1O 2). The TEAC values indicated that the hemiacetals/chalcones and quinonoidal bases species (pH ≥ 5) possess higher scavenging capacity as compared to the flavylium cation (pH < 3). The functional extract also showed 60% of dimethylanthracene protection against 1O 2 and an ORAC value of 16.4 μmol Trolox/g fruit. © 2010 Elsevier Ltd. All rights reserved.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/j.foodchem.2010.12.007
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-79551535921&partnerID=40&md5=454cd976a5725d35e3c16647a76437d1
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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