Determination of phenolic compounds and antioxidant activity of green, black and white teas of Camellia sinensis (L.) Kuntze, Theaceae

Detalhes bibliográficos
Autor(a) principal: Pereira,V.P
Data de Publicação: 2014
Outros Autores: Knor,F.J, Vellosa,J.C.R, Beltrame,F.L
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista brasileira de plantas medicinais (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-05722014000300003
Resumo: Green, black and white teas are all produced from leaves and shoots of Camellia sinensis, the only difference is how they are processed. The aim of this study was to compare the total phenols and flavonoid contents and antioxidant capacity of green, black and white tea bags of different brands. The morphodiagnosis of leaves was used to identification of plant material. HPLC-DAD fingerprinting coupled with Principal Component Analysis (PCA) was applied to analyze similarities of the tea samples. The results showed considerable variability between tea brands in both total phenols (30.55 to 60.85 mg of pyrogallol/g) and flavonoids (6.35 to 8.92 mg of quercetin/g). Green and white teas demonstrated the highest ABTS and DPPH radical scavenging activities.
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spelling Determination of phenolic compounds and antioxidant activity of green, black and white teas of Camellia sinensis (L.) Kuntze, Theaceaeinfusionstotal phenolsflavonoidsfree radical and chemometryGreen, black and white teas are all produced from leaves and shoots of Camellia sinensis, the only difference is how they are processed. The aim of this study was to compare the total phenols and flavonoid contents and antioxidant capacity of green, black and white tea bags of different brands. The morphodiagnosis of leaves was used to identification of plant material. HPLC-DAD fingerprinting coupled with Principal Component Analysis (PCA) was applied to analyze similarities of the tea samples. The results showed considerable variability between tea brands in both total phenols (30.55 to 60.85 mg of pyrogallol/g) and flavonoids (6.35 to 8.92 mg of quercetin/g). Green and white teas demonstrated the highest ABTS and DPPH radical scavenging activities.Sociedade Brasileira de Plantas Medicinais2014-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-05722014000300003Revista Brasileira de Plantas Medicinais v.16 n.3 2014reponame:Revista brasileira de plantas medicinais (Online)instname:Universidade Estadual Paulista (UNESP)instacron:SBPM10.1590/1983-084X/13_061info:eu-repo/semantics/openAccessPereira,V.PKnor,F.JVellosa,J.C.RBeltrame,F.Leng2014-09-11T00:00:00Zoai:scielo:S1516-05722014000300003Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=1516-0572&lng=en&nrm=isoPUBhttps://old.scielo.br/oai/scielo-oai.php||rbpm.sbpm@gmail.com1983-084X1516-0572opendoar:2014-09-11T00:00Revista brasileira de plantas medicinais (Online) - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Determination of phenolic compounds and antioxidant activity of green, black and white teas of Camellia sinensis (L.) Kuntze, Theaceae
title Determination of phenolic compounds and antioxidant activity of green, black and white teas of Camellia sinensis (L.) Kuntze, Theaceae
spellingShingle Determination of phenolic compounds and antioxidant activity of green, black and white teas of Camellia sinensis (L.) Kuntze, Theaceae
Pereira,V.P
infusions
total phenols
flavonoids
free radical and chemometry
title_short Determination of phenolic compounds and antioxidant activity of green, black and white teas of Camellia sinensis (L.) Kuntze, Theaceae
title_full Determination of phenolic compounds and antioxidant activity of green, black and white teas of Camellia sinensis (L.) Kuntze, Theaceae
title_fullStr Determination of phenolic compounds and antioxidant activity of green, black and white teas of Camellia sinensis (L.) Kuntze, Theaceae
title_full_unstemmed Determination of phenolic compounds and antioxidant activity of green, black and white teas of Camellia sinensis (L.) Kuntze, Theaceae
title_sort Determination of phenolic compounds and antioxidant activity of green, black and white teas of Camellia sinensis (L.) Kuntze, Theaceae
author Pereira,V.P
author_facet Pereira,V.P
Knor,F.J
Vellosa,J.C.R
Beltrame,F.L
author_role author
author2 Knor,F.J
Vellosa,J.C.R
Beltrame,F.L
author2_role author
author
author
dc.contributor.author.fl_str_mv Pereira,V.P
Knor,F.J
Vellosa,J.C.R
Beltrame,F.L
dc.subject.por.fl_str_mv infusions
total phenols
flavonoids
free radical and chemometry
topic infusions
total phenols
flavonoids
free radical and chemometry
description Green, black and white teas are all produced from leaves and shoots of Camellia sinensis, the only difference is how they are processed. The aim of this study was to compare the total phenols and flavonoid contents and antioxidant capacity of green, black and white tea bags of different brands. The morphodiagnosis of leaves was used to identification of plant material. HPLC-DAD fingerprinting coupled with Principal Component Analysis (PCA) was applied to analyze similarities of the tea samples. The results showed considerable variability between tea brands in both total phenols (30.55 to 60.85 mg of pyrogallol/g) and flavonoids (6.35 to 8.92 mg of quercetin/g). Green and white teas demonstrated the highest ABTS and DPPH radical scavenging activities.
publishDate 2014
dc.date.none.fl_str_mv 2014-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-05722014000300003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-05722014000300003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1983-084X/13_061
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Plantas Medicinais
publisher.none.fl_str_mv Sociedade Brasileira de Plantas Medicinais
dc.source.none.fl_str_mv Revista Brasileira de Plantas Medicinais v.16 n.3 2014
reponame:Revista brasileira de plantas medicinais (Online)
instname:Universidade Estadual Paulista (UNESP)
instacron:SBPM
instname_str Universidade Estadual Paulista (UNESP)
instacron_str SBPM
institution SBPM
reponame_str Revista brasileira de plantas medicinais (Online)
collection Revista brasileira de plantas medicinais (Online)
repository.name.fl_str_mv Revista brasileira de plantas medicinais (Online) - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv ||rbpm.sbpm@gmail.com
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