Antioxidant activity of Camellia sinensis leaves and tea from a lowland plantation in Malaysia

Chan, Eric Wei Chiang; Lim, Yau Yan; Chew, Yik Ling

doi:10.1016/j.foodchem.2006.07.009

Cited by 242 publications

(201 citation statements)

References 31 publications

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“…Both L. speciosa (banaba) and A. occidentale (cashew) are known to have very strong antioxidant properties (Chan and Wong, 2015). The AEAC value of R. stylosa stems (11660 mg AA/100 g) is comparable to that of the highland tea plant of C. sinensis (11380 mg AA/100 g) reported by Chan et al (2007).…”

Section: Resultssupporting

confidence: 71%

Antioxidant, anti-tyrosinase and anti-quorum sensing activities of four mangrove tree species vs. green tea

Chan¹,

Ng²,

Sim³

et al. 2017

J App Pharm Sci

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This study was conducted to validate a claim that mangrove teas have stronger antioxidant and anti-tyrosinase properties than green tea. Different plant parts (leaves, stems and roots) of four mangrove tree species namely Rhizophora apiculata, Rhizophora stylosa, Avicennia rumphiana and Sonneratia alba were analysed their antioxidant, anti-tyrosinase and anti-quorum sensing (anti-QS) properties. Strongest antioxidant properties were observed in the stems of R. stylosa. Antioxidant properties of the mangrove species (fresh samples) and their teas (dried leaves) were inferior to leaves of Camellia sinensis and green tea, respectively. The anti-tyrosinase activity of leaves and stems of R. apiculata, and stems of S. alba was outstanding but was not detected in green tea. All four mangrove species possessed anti-QS properties with moderate activity displayed by green tea.

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Section: Resultssupporting

confidence: 71%

Antioxidant, anti-tyrosinase and anti-quorum sensing activities of four mangrove tree species vs. green tea

Chan¹,

Ng²,

Sim³

et al. 2017

J App Pharm Sci

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show abstract

“…For this reason, several studies have been performed to evaluate these parameters and their functional properties (e.g., anti-inflammatory or anticarcinogenic activity) (Yao et al, 2006;Chan et al, 2007;Anesini et al, 2008;Nishiyama et al, 2010;Senger et al, 2010). In our study, green tea was used as another reference (in addition to the pure substances, quercetin, and gallic acid) due to its abundance of flavonoids, including catechins and their derivatives, which may constitute up to 30% of its dry weight (Lorenzo et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Antioxidant activity and phenolic content of leaf infusions of Myrtaceae species from Cerrado (Brazilian Savanna)

2015

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There is considerable interest in identifying new antioxidants from plant materials. Several studies have emphasized the antioxidant activity of species belonging to the Myrtaceae family. However, there are few reports on these species from the Cerrado (Brazilian savanna). In this study, the antioxidant activity and phenolic content of 12 native Myrtaceae species from the Cerrado were evaluated (Blepharocalyx salicifolius, Eugenia bimarginata, Eugenia dysenterica, Eugenia klotzschiana, Hexachlamys edulis, Myrcia bella, Myrcia lingua, Myrcia splendens, Myrcia tomentosa, Psidium australe, Psidium cinereum, and Psidium laruotteanum). Antioxidant potential was assessed using the antioxidant activity index (AAI) by the DPPH method and total phenolic content (TPC) by the Folin-Ciocalteu assay. There was a high correlation between TPC and AAI values. Psidium laruotteanum showed the highest TPC (576.56 mg GAE/g extract) and was the most potent antioxidant (AAI = 7.97, IC 50 = 3.86 µg·mL −1 ), with activity close to that of pure quercetin (IC 50 = 2.99 µg·mL −1 ). The extracts of nine species showed IC 50 of 6.24-8.75 µg·mL −1 . Most species showed TPC and AAI values similar to or higher than those for Camellia sinensis, a commonly consumed tea with strong antioxidant properties. The results reveal that the analyzed Myrtaceae species from the Cerrado possess high phenolic contents and antioxidant activities. Thus, they are a potential source of new natural antioxidants. Keywords

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“…O cultivo do chá verde é hoje, entretanto, realizado em diversos países em praticamente todos os continentes (CHAN;LIM;CHEW, 2007;YAO et al, 2005). No Brasil, seu cultivo é restrito ao Vale do Ribeira no Estado de São Paulo, e a maior parte é destinada para a produção do chá preto.…”

Section: Determinação Dos Sólidos Solúveisunclassified

“…A atividade antioxidante foi determinada pelo ensaio do DPPH (radicais 2,2-difenil-1-picrilhidrazil), que avalia a eficiência do sequestro dos radicais livres, sendo um método largamente utilizado para determinação de atividade antioxidante de vinhos, sucos de frutas e chás (CHAN; LIM; CHEW, 2007;NANJO et al, 1996;ZAPOROZHETS et al, 2004). O DPPH (0,024 g) foi dissolvido em 100 mL de metanol.…”

Section: Determinação Da Atividade Antioxidanteunclassified

Chá verde brasileiro (Camellia sinensis var assamica): efeitos do tempo de infusão, acondicionamento da erva e forma de preparo sobre a eficiência de extração dos bioativos e sobre a estabilidade da bebida

Nishiyama¹,

Costa²,

Costa³

et al. 2010

Ciênc. Tecnol. Aliment.

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Antioxidant activity of Camellia sinensis leaves and tea from a lowland plantation in Malaysia

Cited by 242 publications

References 31 publications

Antioxidant, anti-tyrosinase and anti-quorum sensing activities of four mangrove tree species vs. green tea

Antioxidant, anti-tyrosinase and anti-quorum sensing activities of four mangrove tree species vs. green tea

Antioxidant activity and phenolic content of leaf infusions of Myrtaceae species from Cerrado (Brazilian Savanna)

Chá verde brasileiro (Camellia sinensis var assamica): efeitos do tempo de infusão, acondicionamento da erva e forma de preparo sobre a eficiência de extração dos bioativos e sobre a estabilidade da bebida

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