Bibliographies thématiques / Camellia sinenses

Littérature scientifique sur le sujet « Camellia sinenses »

Auteur : Grafiati
Publié le 18 mai 2024

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Articles de revues sur le sujet "Camellia sinenses"

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VENTURA DA CRUZ SOUZA, ANA CLARA, et LAÍS DA SILVA COSTA. « ESTUDO SOBRE INIBIDORES VERDES (CHÁ PRETO E CHÁ VERDE – CAMELLIA SINENSES) NA CORROSÃO DO AÇO INOXIDÁVEL AUSTENÍTICO 316 ». LEOPOLDIANUM 49, no 137 (15 mai 2023) : 10. http://dx.doi.org/10.58422/releo2023.e1402.

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A corrosão é o desgaste natural que ocorre em metais, podendo ser resultadode reações eletroquímicas ou reações de oxirredução entre o metal eo ambiente. É um processo espontâneo que transforma os metais, impedindoo desempenho e durabilidade desses, causando diversos problemasem indústrias de diferentes tipos. Porém, existem algumas formas de preveniressa ação, como por exemplo, usando inibidores de corrosão para osmetais. Dentre alguns tipos de inibidores, há os inibidores verdes, ou seja,aqueles que são obtidos a partir de extratos de plantas ou frutas, sendouma ótima alternativa ecológica, além de ser uma fonte renovável. O presenteestudo, teve como objetivo verificar a capacidade da Camellia sinensis– Chá Verde e Chá Preto, na inibição de corrosão do aço austenítico 316,quando submetido a meios corrosivos de ácido clorídrico em 1,0 mol.L-1e 0,1 mol.L-1. Foram realizados diversos testes em laboratório, além do levantamentode artigos e pesquisas semelhantes. Não se observou mudançasignificativa em relação à corrosão do aço 316 em presença de extratosdo chá verde e do chá preto; no entanto, o chá preto é capaz de inibir acorrosão do cobre na presença de NaCl e de aço carbono, como citado emliteratura, incentivando novos estudos sobre o tema estudado.
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Kim, Jung-Hee, Itsumi Koike, Toshiki Nakashima, Michikazu Hiramatsu, Ikuo Miyajima, Yuki Mizunoe, Hiroshi Okubo et Yukio Ozaki. « Genetic Variation and Phylogeny of Wabisuke Camellias by Amplified Fragment Length Polymorphism (AFLP) Analysis ». Agronomy 11, no 10 (30 septembre 2021) : 1974. http://dx.doi.org/10.3390/agronomy11101974.

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Amplified fragment length polymorphism (AFLP) analysis was conducted on the wabisuke camellia and its relative camellia species. Genetic polymorphism was identified among the ‘Uraku’ camellia, its offspring ‘Tosa-uraku’ and Camellia japonica, whereas the two accessions of the old ‘Uraku’ showed monomorphism in all the fragments. The results suggested that the two old ‘Uraku’ trees are asexually-propagated clonal strains. The genetic distance between wabisuke cultivars and Chinese camellias and between wabisuke camellias and C. sinensis was much further than that between wabisuke cultivars and Camellia japonica. It has also been suggested that wabisuke camellias can be classified into two subgroups, I-1 and I-2, and that Subgroup I-2 originated from C. japonica, while Subgroup I-1, including ‘Uraku’ (synonym: ‘Tarokaja’), was developed by the repeated hybridization of C. japonica to interspecific hybrids with the Chinese camellias, e.g., C. pitardii var. pitardii, or by the involvement of related species not investigated in this study.
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Yel, Hüsnü, Ayfer Dönmez Çavdar et Hülya Kalaycioğlu. « Mechanical and Physical Properties of Cement-Bonded Perticleboard Made from Tea Residues and Hardboards ». Key Engineering Materials 471-472 (février 2011) : 572–77. http://dx.doi.org/10.4028/www.scientific.net/kem.471-472.572.

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The residues of tea factory and waste hardboards are generally incinerated without utilizing their heat performances. The first objective of this study was to manufacture cement bonded particleboard using residues of tea factory (Camellia sinenses L.) and waste hardboards. The second objective was to evaluate modulus of rupture (MOR), modulus of elasticity (MOE), internal bonding strength (IB), water absorption (WA) and thickness swelling (TS) properties of the boards produced. The boards were produced at two density levels of 800 and 1200 kg/m3 and at five lignocellulosic mixture ratios of poplar chips/hardboards/tea residues (1/0/0; 1/1/0; 1/0/1; 0/1/0; 0/0/1, based on weigth). All the boards were produced at lignocellulosic material/cement ratio of 1:2.75 on a weight to weight basis. As cement curing accelerators, Al2(SO4)3 and Na2SiO3 were used at ratios of 1.5% and 3.5%, based on cement weight, respectively. The MOR values ranged from 0.8 to 10.99 MPa and MOE values ranged from 254 to 2979 MPa. The mean values of WA and TS after 24 h of water soaking of the cemen bonded particleboards ranged from 28% to 43.5% and 1.3% to 8.08%, respectively.
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Sousa, Letícia Pereira dos Santos Barbosa de, Priscila Maria Sarmeiro Correa Marciano Leite, Angela Aparecida Vieira, Anderson Carlos Faria et Lucia Vieira. « Effect of water and alkali on purification bacterial cellulose membrane from Kombucha ». Research, Society and Development 10, no 15 (2 décembre 2021) : e526101523267. http://dx.doi.org/10.33448/rsd-v10i15.23267.

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Bacterial cellulose membrane (BCM) is a biomaterial synthesized by bacteria of the genus Gluconocetobacter hansenii with a higher degree of purity than plant cellulose. The commonly used raw material for manipulating bacterial cellulose is kombucha, a beverage consumed by a vast population around the world that promises health benefits. The beverage is composed of tea species Camellia sinenses and a carbon source, refined sucrose, and a starter culture of bacteria and yeast with 10% fermented tea (starter tea) to activate the fermentative process. The Kombucha’s bacterial cellulose membranes (KBCM) are formed over 7 to 10 days on the surface of the fermented product and have the appearance of a gelatinous membrane, this being the by-product of interest. In this work, the objective was to obtain the membrane composed of cellulose via Kombucha and purify it to obtain crystalline cellulose. The purification was performed with distilled water and 0.5M NaOH sodium hydroxide solution to remove residues from the fermentation, successfully removing sugars and bacteria. At the end of the experiments, a lighter film was obtained with coloration close to white, and comparative analyses were performed to verify the structural chemical composition, crystallinity, and morphology of the samples by techniques FTIR, DRX, and SEM, respectively. Then, once the biomaterial was purified, the range of applications expanded to several products to meet the biomedical area, sustainable packaging, and even the fashion industry.
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Sivanesan, Asaipillai, et John L. Alcorn. « Australiasca queenslandica gen. et sp. nov. (Chaetosphaeriaceae : Ascomycota) and its anamorph Dischloridium camelliae sp. nov. from Australia ». Australian Systematic Botany 15, no 5 (2002) : 741. http://dx.doi.org/10.1071/sb01049.

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A new ascomycete, Australiasca queenslandica gen. et sp. nov., belonging to Chaetosphaeriaceae, is described and illustrated from Queensland, Australia with Dischloridium camelliae sp. nov. as its anamorph from Camellia sinensis. This is the first report of a substantiated connection between a teleomorph and a Dischloridium anamorph.
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Chen, Yingjuan, Liang Zeng, Na Shu, Maoyuan Jiang, Han Wang, Yunjin Huang et Huarong Tong. « Pestalotiopsis-Like Species Causing Gray Blight Disease on Camellia sinensis in China ». Plant Disease 102, no 1 (janvier 2018) : 98–106. http://dx.doi.org/10.1094/pdis-05-17-0642-re.

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Gray blight of tea, caused by several Pestalotiopsis-like species, is one of the most destructive foliar diseases in tea cultivation yet the characteristics of these pathogens have not been confirmed until now. With morphological and multigene phylogenetic analyses, we have identified the gray blight fungi as Pseudopestalotiopsis camelliae-sinensis, Neopestalotiopsis clavispora, and Pestalotiopsis camelliae. Phylogenetic analyses derived from the combined internal transcribed spacer, β-tubulin, and translation elongation factor 1-α gene regions successfully resolved most of the Pestalotiopsis-like species used in this study with high bootstrap supports and revealed three major clusters representing these three species. Differences in colony appearance and conidia morphology (shape, size, septation, color and length of median cells, and length and number of apical and basal appendages) were consistent with the phylogenetic grouping. Pathogenicity tests validated that all three species isolated from tea leaves were causal agents of gray blight disease on tea plant (Camellia sinensis). This is the first description of the characteristics of the three species Pseudopestalotiopsis camelliae-sinensis, N. clavispora, and Pestalotiopsis camelliae as causal agents of tea gray blight disease in China.
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Orrock, James M., Bala Rathinasabapathi et Brantlee Spakes Richter. « Anthracnose in U.S. Tea : Pathogen Characterization and Susceptibility Among Six Tea Accessions ». Plant Disease 104, no 4 (avril 2020) : 1055–59. http://dx.doi.org/10.1094/pdis-07-19-1518-re.

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Tea (Camellia sinensis [L.] O. Kuntze) is under investigation as a specialty crop in the United States. Anthracnose is a serious disease in global tea production, but there is no literature on the susceptibility of U.S. planting materials to this disease. We isolated a Colletotrichum species from symptomatic plants in a field trial and identified the pathogen as Colletotrichum camelliae based on morphology and sequencing of the ITS, GS, GAPDH, TUB2, and ApMat domains. A phylogenetic analysis showed that local field isolates were genetically similar to one another and grouped with isolates from C. sinensis in China, whereas a local isolate from an ornamental camellia (C. japonica) was more closely related to C. camelliae isolated from other Camellia spp. Six commercially available tea accessions were evaluated in detached leaf assays for susceptibility to this anthracnose pathogen. All accessions were susceptible to infection, with Fairhope and Small Leaf having the largest lesion sizes. In field observations, Fairhope, Big Leaf, and Small Leaf consistently had lower disease severity than Georgian over two growing seasons. This work documents the impact of anthracnose on U.S. tea varieties and may help shape future directions of tea research, breeding, and recommendations for growers in establishing a novel industry.
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SONG, ZI-WEI, XIAO-FENG XUE et XIAO-YUE HONG. « One new genus and four new species of Phyllocoptinae (Acari : Eriophyoidea) from Fujian Province, southeastern China ». Zootaxa 1894, no 1 (8 octobre 2008) : 42–52. http://dx.doi.org/10.11646/zootaxa.1894.1.3.

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One new genus and four new species of the Phyllocoptinae from Fujian Province, southeastern China are described and illustrated. They are Fujianacarus gen. nov. and Fujianacarus wisterianis sp. nov. on Wisteria sinensis (Sims) Sweet (Fabaceae); Epitrimerus buxsinica sp. nov. on Buxus sinica (Rehd. et Wils.) Cheng (Buxaceae); Shevtchenkella camelliae sp. nov. on Camellia sinensis (L.) O. Ktze. (Theaceae) and Jutarus dolichocladae sp. nov. on Bambusa dolichoclada Hayata (Poaceae). All species are vagrant on the undersurface of leaves, causing no apparent damage to the host plant.
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SUWANNARACH, NAKARIN, JATURONG KUMLA et SAISAMORN LUMYONG. « Spegazzinia camelliae sp. nov. (Didymosphaeriaceae, Pleosprales), a new endophytic fungus from northern Thailand ». Phytotaxa 483, no 2 (10 février 2021) : 117–28. http://dx.doi.org/10.11646/phytotaxa.483.2.4.

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A new endophytic ascomycete, described herein as Spegazzinia camelliae, was isolated from leaves of Camellia sinensis var. assamica collected from Nan Province, Thailand. This species is characterized by basauxic conidiophores and dark brown to blackish brown α and β conidia. It can be distinguished from previously described Spegazzinia species by the spine length of the α conidia and the size of the β conidia. Multi-gene phylogenetic analyses of the small subunit (SSU), large subunit (LSU) and internal transcribed spacers (ITS) of the nuclear ribosomal DNA (rDNA) and the translation elongation factor 1-alpha (tef1) genes also support S. camelliae is a distinct new species within Spegazzinia. A full description, color photographs, illustrations and a phylogenetic tree showing the position of S. camelliae are provided.
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Jiang, Hao, Mengting Zhang, Li Qin, Dongxu Wang, Feng Yu, Wenhui Liang, Chuankui Song et Daniel Granato. « Chemical Composition of a Supercritical Fluid (Sfe-CO2) Extract from Baeckea frutescens L. Leaves and Its Bioactivity Against Two Pathogenic Fungi Isolated from the Tea Plant (Camellia sinensis (L.) O. Kuntze) ». Plants 9, no 9 (29 août 2020) : 1119. http://dx.doi.org/10.3390/plants9091119.

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Colletotrichum gloeosporioides and Pseudopestalotiopsis camelliae-sinensis are the two most important tea plant (Camellia sinensis L.) pathogenic fungi. Interest in natural plant extracts as alternatives to synthetic chemical fungicides to control plant pathogens is growing. In this study, the volatile fraction of Baeckea frutescens L. was extracted by supercritical fluid extraction (SFE-CO2), and its chemical composition was analyzed, and investigated for its antifungal activity against C. gloeosporioides and P. camelliae. The major constituents of the volatile fraction were β-caryophyllene (28.05%), α-caryophyllene (24.02%), δ-cadinene (6.29%) and eucalyptol (5.46%) in B. frutescens SFE-CO2 extracts. The terpineol, linalool, terpinen-4-ol and eucalyptol showed strong contact antifungal activity against P. camelliae and C. gloeosporioides with median inhibitory concentration (MIC50) in the range of 0.69 μL/mL to 2.79 μL/mL and 0.62 μL/mL to 2.18 μL/mL, respectively. Additionally, the volatile fraction had high fumigation antifungal activity against P. camelliae and C. gloeosporioides with an inhibition rate between 20.87% and 92.91%. Terpineol presented the highest antifungal activity in the contact and fumigation toxicity assays. Terpineol, linalool, terpinen-4-ol and eucalyptol were associated with the most active chemical compounds in the volatile fraction against the fungi. The results suggest that B. frutescens SFE-CO2 extracts are potential ingredients to develop a natural fungicide for control of tea plant pathogens.
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Thèses sur le sujet "Camellia sinenses"

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Basu, Pratip Kumar. « Serological relationship between pestalotiopsis theae (Sawada) Stey and Camellia sinenses (L). O. Kuntze ». Thesis, University of North Bengal, 1996. http://hdl.handle.net/123456789/903.

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Fonseca, Beatriz Maria da. « Influência in vitro da clorexidina e do chá verde na longevidade de união adesiva resina composta - dentina / ». São José dos Campos :, 2012. http://hdl.handle.net/11449/89585.

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Orientador: Maria Amélia Máximo de Araújo
Coorientador: Cesar Rogério Pucci
Banca: George Miguel Spyrides
Banca: Ana Paula Martins Gomes
Resumo: O objetivo deste estudo foi avaliar a interface adesiva de amostras de dentina bovina / adesivo e resina variando as estratégias adesivas e o tempo de armazenamento. Foram selecionados 80 incisivos bovinos, limpos e seccionados 2,0 mm além da junção amelocementária, desgaste da superfície vestibular do esmalte, com exposição de uma área plana de dentina, a qual foi submetida a diferentes protocolos adesivos. Aleatoriamente, as amostras foram divididas em 4 grupos (n= 20), submetidos às estratégias adesivas: SB - controle: sistema adesivo Adper Single Bond 2 aplicado segundo instruções do fabricante; CLX - clorexidina: aplicação de solução de digluconato de clorexidina 0,2% previamente a aplicação do sistema adesivo semelhante ao SB; EGCG - EGCG10: aplicação da solução em gel de EGCG 10μM - principal componente ativo do chá verde - por 30 s previamente a aplicação do sistema adesivo semelhante ao SB; e CV - solução aquosa de chá verde: aplicação do chá verde - preparado após infusão da erva acondicionada em sachê - previamente a aplicação do sistema adesivo semelhante ao SB. Em todos os grupos foi aplicada resina composta (RC) Amelogen Plus com o auxílio de matriz de silicone, com fotopolimerização por 20 s cada incremento. Posteriormente, os grupos foram redivididos em dois subgrupos (n= 10) de acordo com o tempo de armazenamento em água destilada por 24 h e 6 meses, a 37ºC em estufa bacteriológica. Em seguida, todos os corpos-de-prova foram seccionados no sentido mésio-distal e cérvico-incisal em cortes paralelos de espessura aproximada de 0,8 mm2 em cortadeira Labcut (Extec Technologies - EUA) com refrigeração em baixa velocidade. Desta forma, foram obtidos em média 9 palitos por dente, sendo cada... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The aim of this study was evaluate the adhesive interface of bovine dentin samples / adhesive and resin varying adhesive strategies and time of storage. Eighty bovine incisors were selected, cleaned and sectioned 2.0 mm beyond the cementoenamel junction; the labial surface of the enamel was worn to obtain a flat area of exposed dentin. The dentin was subjected to different adhesives protocols. Samples were randomly divided into 4 groups (n = 20), according to the adhesive strategies: SB - control: Adper Single Bond 2 (SB) system was applied according to manufacturer's instructions; CHX - chlorhexidine: application of 0.2% chlorhexidine gluconate solution prior to adhesive system similar to SB; EGCG - EGCG10: application 10 μM EGCG gel - the main active component of green tea - for 30 s prior to application of the adhesive system similar to SB; and GT - aqueous green tea: application of green tea - prepared after infusion of the herb sachet - prior to application of the adhesive system similar to SB. The composite resin Amelogen Plus was applied in all groups with aid of silicone matrix, and lightcured for 20 s. Subsequently, groups were re-divided into two subgroups (n = 10) in accordance with the time of storage in distilled water, for 24h or 6 months at 37°. Specimens were sectioned to obtain parallel cuts and beams of approximately 0.8 mm2. Cut procedure was performed in Labcut cutting machine (Extec Technologies - USA) at low speed with cooling. Nine beams per tooth were obtained. Each beam was attached with cyanoacrylate glue to a device prepared for submission to the microtensile test, using a universal testing machine (DL-1000, EMIC, Pinhais-PR-Brazil) with 10 kgf load and speed of... (Complete abstract click electronic access below)
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Pereira, Daniela Santos. « Efeito do antioxidante epigalocatequina-3-galato na perda óssea durante a periodontite induzida por ligadura em ratos. Análise por tomografia microcomputadorizada 2D e 3D e histomorfométrica ». Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/25/25149/tde-26042016-095806/.

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A doença periodontal é uma das doenças inflamatórias crônicas mais comuns que acometem a população. A grande destruição tecidual observada durante o seu desenvolvimento tem sido atribuída ao processo inflamatório exacerbado e ao desequilíbrio favorável à geração de espécies reativas de oxigênio em relação àcapacidade de defesa dos antioxidantes. A epigalocatequina-3-galato (EGCG) obtida da Camellia sinensis é uma substância que apresenta potencial antioxidante e antiinflamatório e, mais recentemente, testes in vitro têm mostrado que também possui atividade anti-osteoclastogênica, sendo apontada como uma possível droga para uso terapêutico nas patologias ósseas com excessiva atividade osteoclástica e destruição óssea. O objetivo do trabalho foi verificar morfométricamente em imagens obtidas pela tomografia microcomputadorizada (micro-CT) e cortes histológicos se a administração diária de EGCG reduz o processo inflamatório e a perda óssea alveolar na doença periodontal induzida por ligadura em ratos. O primeiro molar inferior direito de 60 ratos foi amarrado com fio de seda 3.0 e divididos em grupo sem tratamento (GST), grupo tratado com EGCG (GTEGCG) que recebeu diariamente por gavagem 100mg/Kg de EGCG e grupo Sham (GTsalina) que recebeu apenas solução salina. Nos períodos de 0, 7, 14 e 21 dias (n=5 animais/período/grupo) imagens digitais foram obtidas no microtomógrafo sendo submetidos à análise do nível ósseo periodontal (PBL) e da densidade óssea (BV/TV) inter-radicular. Nos cortes longitudinais do M1 corados pela HE foi avaliado o PBL e morfometricamente o percentual e volume de processo inflamatório e tecido ósseo, além do número osteoclastos/cm2. Os dados foram submetidos à ANOVA a dois critérios e ao teste de Tukey (p<0,05). O PBL determinado nas imagens microtomográficas e histológicas mostraram que a perda óssea aumenta em todos os grupos durante a fase aguda da doença (0 a 14 dias) e estabiliza na fase crônica (14 dias-21 dias). Em geral, o PBL foi menor no GTEGCG (média de 0,839 mm) comparado aos GST e GTsalina (média de 0,953 ). Quanto à densidade óssea o BV/TV foi maior no GTEGCG (68%) comparados aos GST (62,06%). O percentual do processo inflamatório e o número de osteoclastos foram menores no GTEGCG, com pico aos 14 dias (3,4% de processo inflamatório e 32 osteoclastos/cm2), comparados aos GST e GTsalina cujo o pico foi aos 7 dias (média de 8,6% de processo inflamatório e 68 osteoclastos/cm2). Concluímos que, no modelo de periodontite induzida por ligadura, o tratamento com EGCG diminui o processo inflamatório e a osteoclastogênese e consequentemente a perda óssea e a severidade da doença.
Periodontal disease is currently one of the most common chronic inflammatory diseases affecting the population. The large tissue destruction observed during its development, has been attributed to exacerbated inflammatory process and unbalance response between production of reactive oxygen species and antioxidant defense capacity. Recently, the substance epigallocatechin-3-gallate (EGCG) obtained from Camellia sinensis have been associated to antioxidant and antiinflammatory actions. In vitro studies have shown that EGCG has also antiosteoclastogenic activity suggesting to be a potencial drug for use in therapeutic treatment of bone diseases with excessive osteoclast formation and bone destruction. The aim of this study was to verify morphometrically in micro-ct and histological images whether daily administration of EGCG inhibits/decreases alveolar bone loss in periodontal disease induced in rats by ligature. The lower right first molar of 60 rats was tied with surgical suture thread 3.0. The animals were divided into untreated group (GST), EGCG treated group (GTEGCG) which received 100mg/kg of EGCG by gavage daily and Sham group (GT saline) which received saline solution only. In periods of 0, 7, 14 and 21 days (n=5 animals/period/group) digital images were obtained in microtomography (SkyScan1176) and subjected to analysis of PBL in the mesial, distal, buccal and lingual root and BV/TV bone volume percentage. In the sagittal slides PBL volumetric points and inflammatory process as well as the number of osteoclasts/cm2 was analyzed. Data were submitted to twoway ANOVA and Tukey test (p <0.05). PBL determined in microtomographic and histological images showed that bone loss increased and stabilized, respectively, in the all groups acute phase (days 0 to 14) and chronic phase (14 days, 21 days) of the disease. In general, the PBL was lower in GTEGCG (average 0,839 mm) compared to GST and GTsaline (average 0,953). Regarding bone density BV/TV in GTEGCG was higher (68%) compared to GST (62.06%). The percentage of inflammation and the number of osteoclasts was more mild in GTEGCG, reaching peak at 14 days (3.4% inflammatory process and 32 osteoclasts / cm2) compared to GST and GTsaline whose peak was at 7 days (average 8.6% inflammatory process and 68 osteoclasts / cm2). It was concluded that in the current model of periodontal disease induced by ligature, EGCG treatment decreases inflammatory process, osteoclastogenesis activity, bone loss, and consequently the severity of the disease.
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Fanaro, Gustavo Bernardes. « Efeito da radiação ionizante na formação de voláteis em chás da planta Camellia sinensis (L) ». Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-22062009-172851/.

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O objetivo desse estudo foi avaliar os efeitos da radiação na formação de voláteis nos chás branco, verde, oolong e preto. As amostras foram irradiadas em temperatura ambiente na fonte de 60Co Gammacel 220 (A.E.C. Ltda) nas doses de 0, 5, 10, 15 e 20kGy. Os compostos orgânicos voláteis foram extraídos por hidrodestilação e os extratos foram separados e identificados por análise em cromatografia a gás acoplado ao espectrômetro de massas (CG/EM). Os resultados mostraram que a formação de voláteis foi diretamente proporcional ao aumento de dose de radiação. O chá branco foi o chá que mostrou sofrer menor influência da radiação ionizante, pois 37,86% dos compostos foram estáveis a todas as doses de radiação e formou 47,53% de novos compostos após a irradiação. O chá verde foi o chá que sofreu a maior influência dos efeitos da radiação na formação de novos compostos, gerando um aumento de 66,12% de voláteis identificados em relação à amostra controle e apenas 21,77% dos voláteis encontrados naturalmente foram resistentes a todas as doses de radiação. O chá oolong apesar de sofrer um tratamento enzimático parcial, foi o segundo chá que sofreu a menor interferência da radiação no aumento da formação de novos voláteis. Nesse chá foi possível detectar 49,59% de novos compostos após a irradiação e 30,08% dos compostos encontrados naturalmente também foram encontrados depois da irradiação. O chá preto foi o segundo chá que sofreu a maior interferência da radiação na formação de novos voláteis (60,94%), porém foi o chá onde se obteve a menor quantidade de compostos estáveis à radiação. Apenas 17,97% do total de compostos identificados não foram degradados quando empregado à radiação ionizante.
The aim of this study was to evaluate the effects of radiation on volatile formation in white, green, oolong and black teas. Samples were irradiated in room temperature at 60Co source Gammacell 220 (A.E.C. Ltda) at doses of 0, 5, 10, 15 and 20kGy. The volatiles organic compound was extracted by hydrodestilation and the extract was separated and identified by gas chromatographymass spectrometry (GCMS) analysis. The results show that the volatiles formations are directly proportional to the increase of radiation dose. The white tea showed less influence of ionizing radiation, as 37.86% of the compounds were stable at all doses of radiation and formed 47.53% of new compounds after irradiation. The green tea was the tea that has the greatest influence of radiation effects, increasing 66.12% of volatiles identified in relation to the control sample and only 21.77% of volatiles found naturally were resistant to all doses of radiation. The oolong tea, despite suffering a partial enzymatic treatment, was the second tea that has least interference of radiation in increasing the formation of new volatile. From this tea, was able to detect 49.59% of new compounds after irradiation and 30.08% of the compounds found naturally were also found after irradiation. The black tea has the second greatest influence of radiation on formation of new volatile (60.94%) and only 17.97% of all identified compounds were not degraded after radiation.
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Modesto, Pamela Nayara. « Influência do extrato de chá verde na remodelação cardíaca induzida por administração de doxorrubicina / ». Botucatu, 2015. http://hdl.handle.net/11449/132032.

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Orientador: Paula Schimidt Gaiolla
Coorientador: Elenize Jmas Pereira
Banca: Lisiane de Almeida Martins
Banca: Silméia Jamas Cazan
Resumo: A doxorrubicina (DOX) é um medicamento amplamente utilizado como agente quimioterápico, tendo eficácia no tratamento de inúmeros tipos de cânceres. Entretanto, o uso desse medicamento pode proporcionar efeitos indesejáveis, como a cardiotoxidade. Diferentes mecanismos têm sido propostos para a cardiotoxicidade induzida pela doxorrubicina, como o estresse oxidativo, inflamação e alterações da matriz extracelular, levando ao processo de remodelação cardíaca. Chá verde (Camellia sinensis), uma das bebidas mais populares em todo o mundo, tem demonstrado uma relação positiva entre o seu consumo habitual e a proteção contra doenças cardiovasculares e contra alguns tipos de neoplasias. Isso se deve as propriedades antioxidantes, antiinflamatórias, antiapoptóticas encontradas nas catequinas, presentes no chá verde. Portanto, é possível que o mesmo atenue os afeitos cardiotóxicos da doxorrubicina, retardando o processo de remodelação cardíaca. O objetivo do presente estudo foi avaliar se o extrato de chá verde atenua a remodelação cardíaca induzida pela doxorrubicina, por meio da avaliação de variáveis bioquímicas, celulares, intersticiais e variáveis morfofuncionais cardíacas. Para isso, foram utilizados ratos Wistar machos com peso de 300 á 350 gramas. Esses animais foram divididos em 4 grupos: CP (controle) que receberam ração padrão e administração intraperitoneal de solução salina, CCV (controle + chá verde) que receberam ração adicionada de extrato de chá verde e administração intraperitoneal de solução salina, DX (doxorrubicina) que receberam ração padrão e administração intraperitoneal de doxorrubicina e DX-CV (doxorrubicina + chá verde) que receberam ração adicionada de extrato de chá verde e administração intraperitoneal de doxorrubicina. A ração foi ofertada por 35 dias e no 33◦ dia foi feita a infusão de doxorrubicina ou de solução salina foram na mesma proporção...
Abstract: Doxorubicin (DOX) is a widely used drug as a chemotherapeutic agent having efficacy in the treatment of numerous cancers. However, use of this drug may provide undesirable effects such as cardiotoxicity. Various mechanisms have been proposed for doxorubicin cardiotoxicity, such as oxidative stress, inflammation and alterations in the extracellular matrix, leading to cardiac remodeling. Green tea (Camellia sinensis), the most popular drinks in the world, has demonstrated a positive relationship between regular consumption and protection against cardiovascular disease and some types of cancer. This is the antioxidant, anti-inflammatory, antiapoptotic found in catechins present in green tea. It is therefore possible that it mitigates the cardiotoxic fond of doxorubicin, slowing the process of cardiac remodeling. The aim of this study was to evaluate whether the green tea extract attenuates cardiac remodeling induced by doxorubicin, through the evaluation of biochemical variables, cell phones, and interstitial cardiac morphofunctional variables. For this, was used male Wistar rats weighing 250 to 300 grams. These animals were divided into 4 groups: CP (control) received standard chow and intraperitoneal administration of saline, CCV (control + green tea) receiving feed added green tea extract and intraperitoneal administration of saline, DX (Doxorubicin) who received standard chow and intraperitoneal administration of doxorubicin and DX-CV (doxorubicin + green tea) fed diets with added green tea extract and intraperitoneal administration of doxorubicin. The feed was supplied for 35 days and on day 33◦ doxorubicin or infusion of saline solution were carried out in the same ratio (20 mg / kg single dose) and the animals were euthanized 48 hours after drug injection. The rats were subjected to the echocardiography before and 48 hours after injection of doxorubicin. Was conducted evaluation of oxidative stress by spectrophotometry ...
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Das, Akan. « Generation and characterization of expressed sequence tags of tea (Camellia sinensis L (O) kuntze) ». Thesis, University of North Bengal, 2011. http://hdl.handle.net/123456789/1469.

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Meneghetti, Isabel Cristina. « Efeito terapêutico do chá verde na morfologia das glândulas submandibulares de ratos com diabetes induzido pela estreptozotocina ». Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/25/25142/tde-01062011-111413/.

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A Camellia sinensis, vem sendo amplamente estudada, em função das suas propriedades medicinais, devido aos polifenóis com funções antioxidantes, tendo seu uso propostos como terapêutica para algumas doenças metabólicas como o Diabetes mellitus. A ingestão diária de antioxidantes, principalmente com compostos fenólicos pode retardar o aparecimento destas doenças. O atual trabalho o avaliou possível efeito terapêutico do chá verde (Camellia Sinensis) em ratos diabéticos induzido pela estreptozotocina, parâmetros clínicos (peso, ingestão hídrica) e laboratoriais (glicemia de jejum, colesterol total, triglicérides, proteínas totais, albumina e uréia) esse efeito na glândula submandibular pelo método morfométrico. Cento e sessenta ratos machos com 2 meses de idade foram distribuídos inicialmente em controle (n = 80) e diabéticos (n = 80). Os animais do grupo controle água (CA) e diabético água (DA) consumiram água como dieta líquida e os animais dos grupos controle chá (CC) e diabético chá (DC) receberam apenas dieta líquida de chá verde. Os parâmetros bioquímicos e morfométricos foram avaliados nos períodos experimentais de 15, 30, 60 e 90 dias (n = 5), após a indução. Os resultados mostraram que: a) a ingestão hídrica dos animais dos grupos DA e DC foram em média 6 vezes maior em relação aos controles; b) aos 15 dias, todos os animais dos grupos CA, CC e DA apresentaram aumento nos índices glicêmicos final de, respectivamente, 45 mg/dL, 65 mg/dL e 88mg/dL em relação ao período inicial, enquanto que todos os animais do grupo DC tiveram seus índices glicêmicos reduzidos em média de 119 mg/dL; c) nos ratos diabéticos o perfil bioquímico das proteínas totais e albumina foram menores em relação aos controles e o da uréia maior, enquanto que, o colesterol total, triglicérides não apresentaram diferenças; d) os ácinos das glândulas submandibulares dos animais dos grupos DA e DC exibiram aumento da eosinofilia citoplasmática e ausência da bosofilia basal, indicativos de alteração no conteúdo protéico e na síntese protéica, além de núcleos picnóticos, indicativos de morte celular por apoptose. Morfometricamente, o volume individual das células acinosas aumentou, enquanto que, o número total de células diminuiu, mantendo o volume total dos ácinos constante durante todo período experimental; e) os ductos granulosos, no grupo CA apresentaram aumento de 125% no seu volume total entre 15 e 90 dias, decorrente do desenvolvimento desta estrutura, aumentando o número e o volume celular. Já, nos DA e DC, o número e o volume individual das células mantiveram-se constante durante todo período experimental. Com base nos resultados obtidos, podemos inferir que a glândula submandibular é um órgão afetado pelo diabetes e a terapêutica utilizada neste experimento (Camellia sinensis) não foi efetiva para o tratamento do diabetes crônica.
The Camellia sinensis, has been widely studied because of their medicinal properties due to the polyphenols with antioxidant functions, and proposed its use as treatment for various metabolic disorders such as diabetes mellitus. The daily intake of antioxidants, mainly phenolic compounds may prevent or delay onset of these diseases. In this study, the possible therapeutic action of green tea (Camellia Sinensis) in diabetic rat induced chemically by streptozotocin was evaluated by clinical (weight, water intake) and laboratory parameters (fasting glucose, total cholesterol, triglycerides, total protein, albumin and urea) and its effect in the submandibular glands by morphometric methods. One hundred and sixty male rats with 2 months of age were distributed initially in control (n = 80) and diabetic (n = 80). The animals of the water control (WC) and water diabetic (WD) groups received only regular drinking water and green tea control (GTC) and green tea diabetic (GTD) groups received green tea solution ad libitum. Morphometric and biochemical parameters were evaluated after 15, 30, 60 and 90 days (n = 5) after induction. The results showed that: a) the water intake of animals from group WD and GTD were six times higher on average than control groups; b) at 15 days, all animals of the WC, WD and GTC groups showed an increase of the glycemic index of, respectively, 45 mg/dL, 65 mg/dL and 88 mg/dL compared to the initial period, while that all animals in CTD group, showed a decrease of 119mg/dL; c) in the diabetic rats of WD and GTD groups the total protein and albumin levels were lower than control groups and urea level higher, whereas, the total cholesterol and triglyceride did not show significant differences, d) the acini of submandibular glands of animals in groups WD and GTD showed increase of the cytoplasmic eosinophilia and absence of the basal basophilia, which may be indicative of changes in protein content and/or structure, and pyknotic nuclei indicative of cell death. Morphometrically, the volume of acinar cells increased, whereas the cell number decreased, maintaining the total volume of acini constant throughout the experimental period, e)the granular convoluted tubules in development showed an increase of 125% between 15 and 90 days in the WC group, due to increase in the number and volume of its cells. In DA and DC groups, the number and volume of cells remained constant throughout the experimental period. Based on the results, we infer that the submandibular gland is an organ affected by diabetes and that the green tea (Camellia sinensis) therapy used in this experiment is not effective for the treatment of chronic diabetes.
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Vermaak, I., AM Viljoen, JH Hamman et Vuuren SF Van. « Effect of simulated gastrointestinal conditions and epithelial transport on extracts of green tea and sage ». Elsevier, 2009. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001730.

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A bstract Few in vitro screening studies on the biological activities of plant extracts that are intended for oral administration consider the effect of the gastrointestinal system. This study investigated this aspect on extracts of Camellia sinensis (green tea) and Salvia officinalis (sage) using antimicrobial activity as amodel for demonstration. Both the crude extracts and their products after exposure to simulated gastric fluid (SGF) as well as simulated intestinal fluid (SIF) were screened for antimicrobial activity. The chromatographic profiles of the crude plant extracts and their SGF as well as SIF products were recorded and compared qualitatively by means of high performance liquid chromatography coupled to mass spectrometry. The effect of epithelial transport on the crude plant extracts was determined by applying them to an in vitro intestinal epithelial model (Caco-2). The crude extracts for both plants exhibited reduced antimicrobial activity after exposure to SGF, while no antimicrobial activity was detected after exposure to SIF. These results suggested chemical modification or degradation of the antimicrobial compounds when exposed to gastrointestinal conditions. This was confirmed by a reduction of the peak areas on the LC–UV–MS chromatograms. From the chromatographic profiles obtained during the transport study, it is evident that some compounds in the crude plant extracts were either not transported across the cell monolayer or they were metabolised during passage through the cells. It can be deduced that the gastrointestinal environment and epithelial transport process can dramatically affect the chromatographic profiles and biological activity of orally ingested natural products.
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Albuquerque, Nadine Luísa Guimarães. « Efeito da incorporação de micropartículas poliméricas carregadas com catequina nas propriedades físico-químicas de um sistema adesivo ». reponame:Repositório Institucional da UFC, 2015. http://www.repositorio.ufc.br/handle/riufc/13622.

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ALBUQUERQUE, Nadine Luísa Guimarães. Efeito da incorporação de micropartículas poliméricas carregadas com catequina nas propriedades físico-químicas de um sistema adesivo. 2015. 59 f. Dissertação (Mestrado em Odontologia) - Faculdade de Farmácia, Odontologia e Enfermagem, Universidade Federal do Ceará, Fortaleza, 2015.
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The aim of this in vitro study was to evaluate the performance of polymeric microparticles loaded with Epigallocatechin-3-gallate (EGCG) on the physicochemical properties of a two-step etch-and-rinse adhesive system. First, the degree of conversion (%DC) was evaluated by FT-IR spectrophotometry and release assay of adhesives to evaluate the performance of EGCG loaded PLGA microparticles was realized (Experiment 1). For release assay, aliquots were collected of each samples and quantified in terms of EGCG release at pre-defined times by means of UV-Vis Spectrophotometer. In Experiment 2, forty-five molars were divided into 5 groups (n=9) according to the rewetting solution used (distilled water, 0.1% EGCG aqueous solution and 1.0% microparticles aqueous solution (PLGA50:50/EGCG)) and the Adper Single Bond 2 adhesive system used (containing 0.1% free EGCG, 1.0% EGCG loaded PLGA microparticles or in original form as control). Five 1-mm-thick increments of composite resin were build up and light-cured for 40 s individually. The teeth were stored in distilled water at 37ºC for 24 h. After storage, they were longitudinally sectioned in both directions to obtain bonded sticks with a cross-sectional area of approximately 1.0 mm². Each bonded stick was testing to a tensile force of 0.5 mm/min in the universal testing machine. %DC and µTBS values were statistically analyzed with ANOVA, with significance level of 5%. There was no statistically significant difference between the DC means after PLGA-microparticles loaded with EGCG incorporated (p>0.05). In relation to release assay, the 1.0% PLGA50:50/EGCG group presented better results, achieving the highest release in quantitative terms, being the elect to be used in bond strength test (Experiment 2). After 24 h of storage, there was no statistically significant difference between the mean bond strength values of the tested groups (p>0.05). The incorporation of the polymeric microparticles loaded with EGCG did not interfere in the adhesive degree of conversion. The adhesive system loaded microparticles EGCG incorporated in its composition was able to release EGCG. However, the flavonoid epigallocatechin-3-gallate (EGCG) had no effect when incorporated into etch-and-rinse adhesive system or applied as dentin pretreatment, on free and microencapsulated forms, in the immediate bond strength.
O objetivo desse estudo in vitro foi avaliar o efeito da incorporação de micropartículas poliméricas carregadas com Epigalocatequina-3-galato (EGCG) nas propriedades físico-químicas de sistema adesivo convencional de 2 passos. Primeiramente, realizou-se o grau de conversão (%GC) pelo Espectrofotômetro FT-IR e ensaio de liberação dos adesivos para avaliar o desempenho das micropartículas poliméricas carregadas com EGCG (Experimento 1). Para o ensaio de liberação, alíquotas de cada amostra foram coletadas e quantificadas em termos de liberação de EGCG por meio do Espectrofotômetro UV-Vis. No Experimento 2, quarenta e cinco terceiros molares humanos foram divididos em 5 grupos (n=9) de acordo com a solução de pré-tratamento utilizada (água destilada, solução aquosa de EGCG a 0,1% e solução aquosa de micropartículas carregadas com EGCG (PLGA50:50/EGCG) a 1,0%) e sistema adesivo Adper Single Bond 2 (3M ESPE) aplicado (contendo EGCG puro a 0,1%, micropartículas carregadas com EGCG a 1,0% ou na sua forma original como controle). Cinco incrementos de 1 mm de espessura de resina composta foram aplicados e fotoativados individualmente por 40 s. Os dentes foram armazenados em água destilada a 37ºC por 24h. Após armazenamento, foram seccionados longitudinalmente em ambos os sentidos para obter espécimes em forma de palitos com a área de secção transversal de aproximadamente 1 mm2. Cada espécime foi tracionado a uma velocidade de 0,5 mm/min em uma máquina de ensaios universais. Os valores de resistência de união e %GC foram avaliados estatisticamente por ANOVA, com nível de significância de 5%. Não houve diferença estatística significante entre as médias do grau de conversão após a incorporação de micropartículas poliméricas carregadas com EGCG no sistema adesivo (p>0,05). Em relação ao ensaio de liberação dos adesivos, o grupo PLGA50:50/EGCG a 1,0% apresentou melhores resultados, alcançando a maior liberação em termos quantitativos, sendo o escolhido para ser usado no teste de resistência de união (Experimento 2). Após 24 h de armazenamento, nenhuma diferença estatisticamente significante foi encontrada entre as médias dos valores de resistência de união dos grupos testados (p>0,05). Concluindo, a incorporação das micropartículas poliméricas carregadas com EGCG não interferiu no grau de conversão dos adesivos. O sistema adesivo com micropartículas carregadas com EGCG incorporado em sua composição foi capaz de liberar EGCG. Porém, o flavonóide Epigalocatequina-3-galato (EGCG) não teve efeito quando incorporado ao sistema adesivo convencional ou aplicado como pré-tratamento da dentina, de forma pura e microencapsulada, na resistência de união imediata.
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Saha, Gargi. « Studies on anthropogenic stresses in tea (Camellia Sinensis (L) O. Kuntze) ». Thesis, University of North Bengal, 2009. http://hdl.handle.net/123456789/1616.

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Livres sur le sujet "Camellia sinenses"

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Dil, Afroz, et National Agricultural Library and Documentation Centre (Bangladesh), dir. Annotated bibliography on tea (Camellia sinensis). Dhaka : Bangladesh Agricultural Research Council, 1990.

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MSc, Banerjee B. Dr, et Chaudhuri T. C, dir. Therapeutic effects of tea. Enfield, NH, USA : Science Publishers, 2005.

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Helen, McKinley, et Jamieson Mark, dir. Handbook of green tea and health research. Hauppauge, NY : Nova Science Publishers, 2009.

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K, Jain N., Siddiqi Maqsood et Weisburger J. H, dir. Protective effects of tea on human health. Wallingford, Oxfordshire, UK : CABI Pub., 2006.

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Yong-su, Zhen, dir. Tea : Bioactivity and therapeutic potential. London : Taylor & Francis, 2002.

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International Plant Genetic Resources Institute. Tea (Camellia Sinensis). International Plant Genetics Research Institute, 1997.

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Health Benefits of Tea (Camellia sinensis) [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.86978.

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Publications, ICON Health. Camellia sinensis - A Medical Dictionary, Bibliography, and Annotated Research Guide to Internet References. ICON Health Publications, 2004.

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Banerjee, B. Therapeutic Effects of Tea. Taylor & Francis Group, 2005.

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Banerjee, B. Therapeutic Effects of Tea. Taylor & Francis Group, 2005.

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Chapitres de livres sur le sujet "Camellia sinenses"

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Bährle-Rapp, Marina. « Camelia sinensis ». Dans Springer Lexikon Kosmetik und Körperpflege, 85. Berlin, Heidelberg : Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_1579.

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Bährle-Rapp, Marina. « Camelia sinensis ». Dans Springer Lexikon Kosmetik und Körperpflege, 86. Berlin, Heidelberg : Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_1581.

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Bährle-Rapp, Marina. « Palmitoyl Camellia Sinensis ». Dans Springer Lexikon Kosmetik und Körperpflege, 397. Berlin, Heidelberg : Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_7361.

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Kaviani, Behzad. « Tea (Camellia sinensis L.) ». Dans Step Wise Protocols for Somatic Embryogenesis of Important Woody Plants, 245–51. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-79087-9_20.

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Anastassakis, Konstantinos. « Green Tea (Camellia sinensis) ». Dans Androgenetic Alopecia From A to Z, 451–57. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-08057-9_52.

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Hürkul, Muhammed Mesud, et Ugur Seker. « Camellia sinensis (L.) Kuntze ». Dans Novel Drug Targets With Traditional Herbal Medicines, 73–78. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-07753-1_5.

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Nair, Kodoth Prabhakaran. « Tea (Camellia sinensis L.) ». Dans Tree Crops, 333–62. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-62140-7_9.

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Montag, Andreas. « Teepflanze (Camellia sinensis ssp.) ». Dans Pflanzen und Haut, 953–54. Berlin, Heidelberg : Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-63014-3_173.

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Khare, C. P. « Camellia sinensis (Linn.) O. Kuntze. » Dans Indian Medicinal Plants, 1. New York, NY : Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-70638-2_274.

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Christophe, Wiart. « Tea (Camellia sinensis (L.) Kuntze) ». Dans Handbook of Medicinal Plants of the World for Aging, 88–93. Boca Raton : CRC Press, 2023. http://dx.doi.org/10.1201/9781003301455-38.

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Actes de conférences sur le sujet "Camellia sinenses"

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RODRIGUES, RENATA CRISTINA BEZERRA, MARIA EDUARDA SILVA CARNEIRO, ANA BEATRIZ MELO RODRIGUÊS, LEILA ALEIXO OEIRAS et CLÁUDIA CRUZ BARBOSA. « O USO DE CAMELLIA SINENSIS (CHÁ VERDE) COMO AUXILIAR NO PROCESSO DE EMAGRECIMENTO ». Dans I Congresso Brasileiro de Doenças Crônicas On-line. Revista Multidisciplinar em Saúde, 2022. http://dx.doi.org/10.51161/cronics/6053.

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Introdução: A obesidade é um problema de saúde mundial que cresce anualmente. Paralelo a obesidade, as doenças crônicas não transmissíveis são importantes causas de morbimortalidade, exigindo dos serviços de saúde estratégias eficazes no combate a doença e seus agravos. Os tratamentos conhecidos para obesidade são dieta, atividade física e uso de medicamentos sintéticos. No entanto, prática da fitoterapia vem ganhando espaço entre a população e nos serviços de saúde, devido vantagens como menores efeitos colaterais, acessibilidade e baixo custo. O nutricionista é um dos profissionais da saúde habilitados a fazer uso de drogas vegetais e fitoterapia e, se este possuir especialização na área, aumenta a gama de possibilidades de prescrição para manipulação de fitoterápicos em formas farmacêuticas. Vários produtos fitoterápicos são comercializados, porém poucos têm ação comprovada e estudos suficientes que atestem a segurança do uso. Dentre os que são seguros, o Chá Verde (Camellia Sinensis) tem um certo destaque na aceitabilidade. Objetivo: Descrever os efeitos do uso de Camellia sinensis como auxiliar no processo de emagrecimento. Material e métodos: Revisão integrativa de literatura, utilizando os Descritores em Ciências da Saúde (DeCS) “obesidade”, “fitoterapia”, “chá verde” e “Camellia sinensis”, nas bases de dados SciELO , LILACS , Medline , e Google Acadêmico. Foram incluídos artigos originais, com estudos de fitoterápicos à base de Camellia sinensis no tratamento alternativo para obesidade e em português. Ao fim da aplicação dos critérios de exclusão, foram selecionados 4 artigos. Resultados: As folhas da Camellia sinensis apresentam mais de 2000 componentes, como flavonoides, quercetinas e suas formas glicosídicas, cafeína, alcalóides e catequinas. É à presença abundante de catequinas que são conferidas as principais ações metabólicas do chá verde, dentre elas: controle glicêmico, diminuição lipídica, por aumento de massa magra e perda de gordura e redução dos níveis séricos de triglicerídeos, quando associado o consumo a prática de exercício físico. Outros efeitos benéficos são o efeito termogênico, ação antioxidante e anti-carcinogênicia. Conclusão: Os mecanismos de ação ainda não estão totalmente claros, e mais estudos são necessários para esclarecer como estes ativos funcionam na saúde, a forma correta de uso, posologia e seus efeitos colaterais.
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Sun, Bo, Zhen Jin, Xue Xia, Yuxiao Tian, Liqiang Tan et Qian Tang. « Karyotype analysis of Camellia sinensis cv. Chuannong-Huangyazao ». Dans INTERNATIONAL CONFERENCE ON FRONTIERS OF BIOLOGICAL SCIENCES AND ENGINEERING (FBSE 2018). Author(s), 2019. http://dx.doi.org/10.1063/1.5085543.

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Widhianata, Hani, et Taryono. « Organogenesis responses of tea (Camellia sinensis (L.) O. Kuntze) var. assamica and sinensis ». Dans 1ST INTERNATIONAL CONFERENCE ON BIOINFORMATICS, BIOTECHNOLOGY, AND BIOMEDICAL ENGINEERING (BIOMIC 2018). Author(s), 2019. http://dx.doi.org/10.1063/1.5098431.

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Morais Kos, Bruno, et Jairelda Sousa Rodrigues. « Propriedades terapêuticas dos chás derivados da Camellia sinensis L. » Dans II Congresso Internacional de Saúde Única ( Interface Mundial). , : Even3, 2020. http://dx.doi.org/10.29327/icidsuim2020.305786.

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de Oliveira, Jessica, Victor Souza, Guilherme de Souza, Susana Cordeiro, Edna Silva, Elen da Silva, Anna Barros et Ana Martins. « Chá Verde (Camellia Sinensis) Promovendo Emagrecimento – uma Breve Revisão ». Dans XXI I Congresso Brasileiro de Nutrologia. Thieme Revinter Publicações Ltda, 2018. http://dx.doi.org/10.1055/s-0038-1674533.

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Jin, Zhen, Bo Sun, Liqiang Tan et Qian Tang. « Chromosomal karyotype analysis of Camellia sinensis cv Chuanhuang No.1 ». Dans 2ND INTERNATIONAL CONFERENCE ON FRONTIERS OF BIOLOGICAL SCIENCES AND ENGINEERING (FSBE 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000291.

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Le Bot, M., A. Maniere et P. Caillis. « Comparison of oil cakes from Camellia oleifera and Camellia sinensis by LC-DAD-MSn and LC-ESLD ». Dans 67th International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA) in cooperation with the French Society of Pharmacognosy AFERP. © Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-3399815.

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Sutini, Mochamad Sodiq, Wirdhatul Muslihatin et Mochamad Rasjad Indra. « Production of secondary metabolites trimethyl xanthina by Camellia sinensis L suspension culture ». Dans PROCEEDING OF INTERNATIONAL BIOLOGY CONFERENCE 2016 : Biodiversity and Biotechnology for Human Welfare. Author(s), 2017. http://dx.doi.org/10.1063/1.4985427.

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Nugraheni, Zjahra V., Hidayah N. Laili, Wahyu D. Gunawan, Herdayanto S. Putro, Agus Wahyudi, Yulfi Zetra et Rafwan Y. Perry Burhan. « Effect of black tea extract (Camellia sinensis) on antioxidant activity of pukis ». Dans 4TH INTERNATIONAL SEMINAR ON CHEMISTRY. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0051536.

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NASCIMENTO, FRANKLIN FERNANDO DE SANTANA. « AÇÃO DAS CATEQUINAS DO CHÁ VERDE (Camellia sinensis) NO PROCESSO DE REDUÇÃO CORPORAL ». Dans III Congresso Brasileiro de Saúde On-line. Revista Multidisciplinar em Saúde, 2022. http://dx.doi.org/10.51161/iii-conbrasau/11961.

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Rapports d'organisations sur le sujet "Camellia sinenses"

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Bigaud, Mariah A., et Anna Kam-Ha Yeung-Cheung. The in vitro Studies of the Inhibitory Effect of Green Tea (Camellia sinensis) on Pseudomonas aeruginosa Treated Contact Lenses. Journal of Young Investigators, avril 2017. http://dx.doi.org/10.22186/jyi.32.4.25-29.

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Yu, Zhang, Fu Yao, Yang Xuefei, Aye Mya Mon, Pyae Phyo Hein, Li Jianwen, Yunn Mi Mi Kyaw et al. Vegetables from local markets in Myanmar. International Centre for Integrated Mountain Development (ICIMOD), septembre 2022. http://dx.doi.org/10.53055/icimod.1011.

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This book enumerates the diversity in the prevalence and use of vegetables in parts of Myanmar. It draws on our field studies in Myanmar, where we encountered people consuming interesting plant species as vegetables. For example, we saw parts of the moorva dregea (Wattakaka volubilis), belonging to the family Apocyanaceae, and jengkol (Archidendron pauciflorum), belonging to the family Fabaceae, being consumed as vegetables. These plants are generally considered poisonous by scientists. Likewise, the roots of the winged bean (Psophocarpus tetragonolobus) and the seedlings of the wine palm (Borassus flabellifer), which have a pungent taste, are very popular vegetables in the dry season in Myanmar. Tea is a globally well-known and widely-consumed beverage. However, in Myanmar, Pu’er tea (Camellia sinensis var. assamica) is consumed as a beverage and a vegetable. The leaf that is consumed as a vegetable is fermented and preserved.
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