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Pesquisa : B01.650.940.800.575.912.250.965.500 [Categoria DeCS]
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Id: biblio-1249175
Autor: Freire, Juliana Mesquita; Barroso, Amanda Ribeiro; Assis, Amanda Araújo de; Texeira, Bruna Helena; Braga, Jonatas Henrique Guimarães; Oliveira, Daniela Aparecida; Braga, Mariana Aparecida; Marcussi, Silvana.
Título: Enzymes modulation by dried grape pomace from the manufacture of wines and juices
Fonte: Braz. J. Pharm. Sci. (Online);56:e18467, 2020. tab, graf.
Idioma: en.
Resumo: The processing of grapes for the manufacture of juices and wines, generates large quantities of by-products rich in metabolites with antioxidant, antimicrobial, anti-inflammatory and cicatrizing activities. The high homology between human enzymes and snake venoms makes the latter valuable laboratory tools for the study of pathophysiological processes. Proteases and phospholipases A2 act in processes related to hemostasis and inflammatory response. Thus, in this work, dried pomace obtained from grape (Isabel, Niagara, Bordô, BRS Violeta and Blend cultivars) processing were evaluated on phospholipase, proteolytic, hemolytic and thrombolytic activities induced by snakes venoms and the content of phenolic compounds and minerals was evaluated. The dried pomace exerted inhibitory and potentiating actions in all analyzed activities. The enzymatic modulators present in the evaluated dried pomace have potential for therapeutic use, although their broad characterization is still necessary, in order to define adequate amounts and formulations to obtain efficacy and safety in their use.
Descritores: Venenos de Serpentes/efeitos adversos
Vinho/classificação
Enzimas/análise
Compostos Fenólicos/análise
Fosfolipases A2/análise
-Vitis/classificação
Resíduos Industriais/análise
Responsável: BR40.1 - DBD - Divisão de Biblioteca e Documentacão do Conjunto das Químicas


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Id: biblio-1254838
Autor: Al-Aizari, Ahmed Ali; Al-Obeed, Rashid S; Mohamed, Mahmoud AH.
Título: Improving micropropagation of some grape cultivars via boron, calcium and phosphate
Fonte: Electron. j. biotechnol;48:95-100, nov. 2020. ilus, tab.
Idioma: en.
Resumo: BACKGROUND: An efficient regeneration protocol is a priority for the successful application of plant biotechnology. Grape nodal explants were used to develop a micropropagation protocol for Thompson Seedless and Taify cvs. Explants were cultured on MS medium supplemented with Kinetin or benzylaminopurine (BA) and indolebutyric acid (IBA). RESULTS: For both cultivars, axillary buds were grown, only, on a medium enriched with kinetin, moreover, shoot tip necrosis and callus formation were observed on Thompson Seedless cv. cultures grown on a medium with BA. Supplementing the growth medium with 100 mM (boron) B and 2.5 mM (calcium) Ca successfully help overcome these phenomena. The highest regenerated shoot numbers (14 and 6.2 explant 1 ) for Taify and Thompson Seedless cvs., respectively, were on media supplemented with 13.2 mM BA + 4.9 mM IBA and BA 13.2 mM + 5.8 mM IBA, respectively. Moreover, these media supported the developing shoots to have the heaviest dry weights (1.46 and 0.72 mg explant 1 ) for Taify and Thompson Seedless cvs., respectively. Thompson Seedless cv. regenerated shoot numbers and their dry weights were significantly increased by increasing the MS medium PO4 concentration. However, these two parameters were significantly decreased for Taify cv. Developing shoots were elongated and rooted on MS medium enriched with 4.9 mM, IBA 100 mM B and 2.5 mM Ca. Plantlets were acclimatized and successfully transferred to the greenhouse conditions. CONCLUSIONS: A novel promising protocol for Thomson Seedless and Taify cvs. micropropagation using single nodes has been developed.
Descritores: Fosfatos/química
Boro/química
Cálcio/química
Vitis/crescimento & desenvolvimento
-Regeneração
Biotecnologia
Brotos de Planta
Necrose/prevenção & controle
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-950733
Autor: Cetin, Emine Sema.
Título: Induction of secondary metabolite production by UV-C radiation in Vitis vinifera L. Öküzgözü callus cultures
Fonte: Biol. Res;47:1-7, 2014. tab.
Idioma: en.
Resumo: BACKGROUND: The aim of the present work was to examine the role of UV-C irradiation on the production of secondary metabolites (total phenolic, total flavanols, total flavonols, catechin, ferulic acid and trans-resveratrol in phenolic compounds and α-, ß-, γ- δ-tocopherols) in callus cultures. Studies on the effects of UV-C treatment on callus culture are seldom and generally focused on UV-B. However UV-C radiation play an important role in accumule secondary metabolites. RESULTS: In this study, callus cultures from Öküzgözü grape cultivar were initiated from leaf petiole explants. Calli formed after 6 weeks on the medium supplemented with 0.5 mg L-1 benzylaminopurine (BA), 0.5 mg L-1 indole acetic acid (IAA) on B5 media. Callus tissues were exposed to UV-C irradiation at 10, 20 and 30 cm distances from the UV source for 5 and 10 minutes and samples were collected at hours 0, 24 and 48. CONCLUSIONS: The greatest total phenolic content (155.14 mg 100 g-1) was detected in calli exposed to UV-C for 5 min from 30 cm distance and sampled after 24 h. 24 h and 48 h incubation times, 30 cm and 5 min were the most appropriate combination of UV-C application in total flavanol content. Maximum total flavonol content (7.12 mg 100 g-1) was obtained on 0 h, 5 min and 20 cm combination. The highest (+)- catechin accumulation (8.89 mg g-1) was found in calli with 10 min UV-C application from 30 cm distance and sampled after 48 h. Ferulic acid content increased 6 fold in Öküzgözü callus cultures (31.37 µg g-1) compared to the control group. The greatest trans-resveratrol content (8.43 µg g-1) was detected in calli exposed to UV-C for 5 min from 30 cm distance and sampled after 24 h. The highest α-tocopherol concentration was found in calli exposed to UV-C for 10 min from 30 cm distance and sampled after 24 h. As a conclusion, it was showed that UV-C radiation had remarkable promoting effects on the accumulation of secondary metabolites in the calli of Öküzgözü grape cultivar.
Descritores: Raios Ultravioleta
Folhas de Planta/efeitos da radiação
Produtos Agrícolas/efeitos da radiação
Vitis/efeitos da radiação
Técnicas de Embriogênese Somática de Plantas/métodos
Metabolismo Secundário/efeitos da radiação
-Fenóis/análise
Estilbenos/análise
Flavonoides/análise
Catequina/análise
Cromatografia
Folhas de Planta/metabolismo
Folhas de Planta/química
Produtos Agrícolas/fisiologia
Ácidos Cumáricos/análise
Vitis/metabolismo
Vitis/química
Tocoferóis/análise
Flavonóis/análise
Metabolismo Secundário/fisiologia
Resveratrol
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-950743
Autor: Cetin, Emine Sema; Babalik, Zehra; Hallac-Turk, Filiz; Gokturk-Baydar, Nilgun.
Título: The effects of cadmium chloride on secondary metabolite production in Vitis vinifera cv. cell suspension cultures
Fonte: Biol. Res;47:1-6, 2014. graf, tab.
Idioma: en.
Resumo: BACKGROUND: Plant secondary metabolites are possess several biological activities such as anti-mutagenic, anti-carcinogenic, anti-aging, etc. Cell suspension culture is one of the most effective systems to produce secondary metabolites. It is possible to increase the phenolic compounds and tocopherols by using cell suspensions. Studies on tocopherols production by cell suspension cultures are seldom and generally focused on seed oil plants. Although fresh grape, grape seed, pomace and grape seed oil had tocopherols, with our best knowledge, there is no research on tocopherol accumulation in the grape cell suspension cultures. In this study, it was aimed to determine the effects of cadmium chloride treatments on secondary metabolite production in cell suspension cultures of grapevine. Cell suspensions initiated from callus belonging to petiole tissue was used as a plant material. Cadmium chloride was applied to cell suspension cultures in different concentration (1.0 mM and 1.5 mM) to enhance secondary metabolite (total phenolics, total flavanols, total flavonols, trans-resveratrol, and α-, ß-, γ- δ-tocopherols) production. Cells were harvested at two days intervals until the 6th day of cultures. Amounts of total phenolics, total flavanols and total flavonols; trans-resveratrol and tocopherols (α-, ß-, γ- and δ-tocopherols) and dry cell weights were determined in the harvested cells. RESULTS: Phenolic contents were significantly affected by the sampling time and cadmium concentrations. The highest values of total phenolic (168.82 mg/100 g), total flavanol (15.94 mg/100 g), total flavonol (14.73 mg/100 g) and trans-resveratrol (490.76 µg/100 g) were found in cells treated with 1.0 mM CdCl2 and harvested at day 2. Contents of tocopherols in the cells cultured in the presence of 1.0 mM CdCl2 gradually increased during the culture period and the highest values of α, ß and γ tocopherols (145.61, 25.52 and 18.56 µg/100 g) were detected in the cell cultures collected at day 6. CONCLUSIONS: As a conclusion, secondary metabolite contents were increased by cadmium chloride application and sampling time, while dry cell weights was reduced by cadmium chloride treatments.
Descritores: Cloreto de Cádmio/farmacologia
Vitis/efeitos dos fármacos
Cultura Primária de Células/métodos
Metabolismo Secundário/efeitos dos fármacos
-Fenóis/análise
Estilbenos/análise
Flavonoides/análise
Folhas de Planta/crescimento & desenvolvimento
Folhas de Planta/efeitos dos fármacos
Folhas de Planta/metabolismo
Folhas de Planta/química
Vitis/crescimento & desenvolvimento
Vitis/metabolismo
Vitis/química
Tocoferóis/análise
Flavonóis/análise
Proliferação de Células/efeitos dos fármacos
Técnicas de Embriogênese Somática de Plantas/métodos
Resveratrol
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-1137306
Autor: Hemsinli, Dogus; Ergene, Saban; Karakisi, Sedat Ozan; Mercantepe, Tolga; Tumkaya, Levent; Yilmaz, Adnan; Akyilzdiz, Kerimali.
Título: Tea grape reduces abdominal aortic occlusion-induced lung injury
Fonte: Rev. bras. cir. cardiovasc = Braz. j. cardiovasc. surg. (impr.);35(4):512-520, July-Aug. 2020. tab, graf.
Idioma: en.
Projeto: Recep Tayyip Erdogan University Scientific Research Support Fund Agency.
Resumo: Abstract Introduction: Ischemia-associated mortality caused by aortic cross-clamps, as in ruptured abdominal aorta aneurysm surgeries, and reperfusion following their removal represent some of the main emergency conditions in cardiovascular surgery. The purpose of our study was to examine the potential protective effect of tea grape against aortic occlusion-induced lung injury using biochemical, histopathological, immunohistochemical, and quantitative analyses. Methods: Thirty-two male Sprague-Dawley rats were randomly assigned into four groups: control (healthy), glycerol + ischemia/reperfusion (I/R) (sham), I/R, and I/R + tea grape. Results: Following aortic occlusion, we observed apoptotic pneumocytes, thickening in the alveolar wall, edematous areas in interstitial regions, and vascular congestion. We also observed an increase in pulmonary malondialdehyde (MDA) levels and decrease in pulmonary glutathione (GSH). However, tea grape reduced apoptotic pneumocytes, edema, vascular congestion, and MDA levels, while increased GSH levels in lung tissue. Conclusion: Our findings suggest that tea grape is effective against aortic occlusion-induced lung injury by reducing oxidative stress and apoptosis.
Descritores: Traumatismo por Reperfusão/prevenção & controle
Vitis
Lesão Pulmonar/etiologia
Lesão Pulmonar/prevenção & controle
-Aorta Abdominal/cirurgia
Chá
Ratos Sprague-Dawley
Pulmão
Limites: Animais
Masculino
Ratos
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Id: biblio-950817
Autor: Hernández-Salinas, Romina; Decap, Valerie; Leguina, Alberto; Cáceres, Patricio; Perez, Druso; Urquiaga, Ines; Iturriaga, Rodrigo; Velarde, Victoria.
Título: Antioxidant and anti hyperglycemic role of wine grape powder in rats fed with a high fructose diet
Fonte: Biol. Res;48:1-9, 2015. graf, tab.
Idioma: en.
Projeto: CONICYT. Fondef; . PUC.
Resumo: BACKGROUND: Metabolic syndrome is a growing worldwide health problem. We evaluated the effects of wine grape powder (WGP), rich in antioxidants and fiber, in a rat model of metabolic syndrome induced by a high fructose diet. We tested whether WGP supplementation may prevent glucose intolerance and decrease oxidative stress in rats fed with a high fructose diet. METHODS: Male Sprague-Dawley rats weighing 180 g were divided into four groups according to their feeding protocols. Rats were fed with control diet (C), control plus 20 % WGP (C + WGP), 50 % high fructose (HF) or 50 % fructose plus 20 % WGP (HF + WGP) for 16 weeks. Blood glucose, insulin and triglycerides, weight, and arterial blood pressure were measured. Homeostasis model assessment (HOMA) index was calculated using insulin and glucose values. A glucose tolerance test was performed 2 days before the end of the experiment. As an index of oxidative stress, thio-barbituric acid reactive substances (TBARS) level was measured in plasma and kidney, and superoxide dismutase was measured in the kidney. RESULTS: Thiobarbituric acid reactive substances in plasma and renal tissue were significantly higher when compared to the control group. In addition, the area under the curve of the glucose tolerance test was higher in HF fed animals. Furthermore, fasting blood glucose, plasma insulin levels, and the HOMA index, were also increased. WGP supplementation prevented these alterations in rats fed with the HF diet. We did not find any significant difference in body weight or systolic blood pressure in any of the groups. CONCLUSIONS: Our results show that WGP supplementation prevented hyperglycemia, insulin resistance and reduced oxidative stress in rats fed with HF diet. We propose that WGP may be used as a supplement in human food as well.
Descritores: Vinho
Intolerância à Glucose/prevenção & controle
Estresse Oxidativo/efeitos dos fármacos
Vitis/química
Síndrome Metabólica/prevenção & controle
Hiperglicemia/prevenção & controle
Fitoterapia/métodos
-Pós/uso terapêutico
Superóxido Dismutase/análise
Tiobarbitúricos/análise
Triglicerídeos/análise
Glicemia/análise
Resistência à Insulina
Ratos Sprague-Dawley
Síndrome Metabólica/induzido quimicamente
Modelos Animais de Doenças
Pressão Arterial
Frutose/administração & dosagem
Teste de Tolerância a Glucose
Insulina/sangue
Rim/metabolismo
Antioxidantes/farmacologia
Limites: Animais
Masculino
Ratos
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-1156159
Autor: Santos, Deivid Ramos dos; Teixeira, Renan Kleber Costa; Pimentel, Antônio Leonardo Jatahi Cavalcanti; Corrêa, Wender de Jesus Pena; Araújo, Nayara Pontes de; Calvo, Faustino Chaves; Barros, Rui Sérgio Monteiro de.
Título: O oftalmologista e as uvas: Um modelo de treinamento microcirúrgico / The ophthalmologist and the grapes: A microsurgical training model
Fonte: Rev. bras. oftalmol;79(6):366-369, nov.-dez. 2020. tab, graf.
Idioma: pt.
Resumo: Resumo Objetivo: Desenvolver um modelo de treinamento de cirurgias corneanas utilizando uvas. Métodos: Foram empregadas uvas como estruturas que mimetizam o tamanho do globo ocular humano, recobertas com materiais de látex, simulando a pratica de cirurgias de córnea utilizando um sistema de videomagnificação. Foram realizados oito pontos simples. Foi avaliado o tempo de confecção do procedimento. Resultados: Foram realizadas 25 simulações como o modelo descrito. O tempo médio de realização da rafia foi de 34,56 ±5,79 minutos. A análise da correlação entre o tempo e a ordem das cirurgias mostrou uma redução no tempo de confecção. Conclusão: O modelo de treinamento oftalmológico utilizando uvas mostrou-se capaz de simular as etapas básicas do treinamento de suturas microcirúrgicas.

Abstract Objective: Develop a training model for corneal surgery using grapes. Methods: Grapes were used as structures that mimic the size of the human eyeball, covered with latex materials, simulating the practice of corneal surgery using a videomagnification system. Eight simple stitches were performed. The surgical time was evaluated. Results: 25 simulations were carried out as the model described. The mean time taken for the raffia was 34.56 ± 5.79 minutes. The analysis of the correlation between the time and the order of the surgeries showed a reduction in the confection time. Conclusion: The ophthalmic training model using grapes proved to be capable of simulating the basic stages of microsurgery suture training.
Descritores: Suturas
Gravação em Vídeo
Tecnologia de Baixo Custo
Vitis
Educação Médica
Treinamento por Simulação
Microcirurgia
-Epidemiologia Experimental
Estudos Transversais
Alternativas ao Uso de Animais
Responsável: BR1.2 - Biblioteca Central


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Id: biblio-1089077
Autor: Kessi-Pérez, Eduardo I; Molinet, Jennifer; Martínez, Claudio.
Título: Disentangling the genetic bases of Saccharomyces cerevisiae nitrogen consumption and adaptation to low nitrogen environments in wine fermentation
Fonte: Biol. Res;53:02, 2020. tab, graf.
Idioma: en.
Projeto: Universidad de Santiago de Chile; . CONICYT/FONDECYT.
Resumo: The budding yeast Saccharomyces cerevisiae has been considered for more than 20 years as a premier model organ- ism for biological sciences, also being the main microorganism used in wide industrial applications, like alcoholic fermentation in the winemaking process. Grape juice is a challenging environment for S. cerevisiae , with nitrogen deficiencies impairing fermentation rate and yeast biomass production, causing stuck or sluggish fermentations, thus generating sizeable economic losses for wine industry. In the present review, we summarize some recent efforts in the search of causative genes that account for yeast adaptation to low nitrogen environments, specially focused in wine fermentation conditions. We start presenting a brief perspective of yeast nitrogen utilization under wine fermentative conditions, highlighting yeast preference for some nitrogen sources above others. Then, we give an outlook of S. cerevisiae genetic diversity studies, paying special attention to efforts in genome sequencing for population structure determination and presenting QTL mapping as a powerful tool for phenotype-genotype correlations. Finally, we do a recapitulation of S. cerevisiae natural diversity related to low nitrogen adaptation, specially showing how different studies have left in evidence the central role of the TORC1 signalling pathway in nitrogen utilization and positioned wild S. cerevisiae strains as a reservoir of beneficial alleles with potential industrial applications (e.g. improvement of industrial yeasts for wine production). More studies focused in disentangling the genetic bases of S. cerevisiae adaptation in wine fermentation will be key to determine the domestication effects over low nitrogen adaptation, as well as to definitely proof that wild S. cerevisiae strains have potential genetic determinants for better adaptation to low nitrogen conditions.
Descritores: Saccharomyces cerevisiae/metabolismo
Vinho/microbiologia
Adaptação Fisiológica
Vitis/metabolismo
Fermentação
Nitrogênio/metabolismo
-Saccharomyces cerevisiae/crescimento & desenvolvimento
Vitis/microbiologia
Responsável: CL1.1 - Biblioteca Central


  9 / 102 LILACS  
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Id: biblio-1051447
Autor: Brizuela, Natalia; Tymczyszyn, E. Elizabeth; Semorile, Liliana C; Valdes La Hens, Danay; Delfederico, Lucrecia; Hollmann, Axel; Bravo-Ferrada, Barbara.
Título: Lactobacillus plantarum as a malolactic starter culture in winemaking: a new (old) player?
Fonte: Electron. j. biotechnol;38:10-18, Mar. 2019. tab.
Idioma: en.
Projeto: Universidad Nacional de Quilmes; . Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT ­ MINCyT, Argentina; . Comisión Nacional de Investigaciones Científicas de la Provincia de Buenos Aires (CIC-BA, Argentina).
Resumo: Malolactic fermentation (MLF) is a process in winemaking responsible for the conversion of L-malic acid to L-lactic acid and CO2, which reduces the total acidity, improves the biological stability, and modifies the aroma profile of wine. MLF takes place during or after alcoholic fermentation and is carried out by one or more species of lactic acid bacteria (LAB), which are either present in grapes and cellars or inoculated with malolactic starters during the winemaking process. Although the main bacterium among LAB used in commercial starter cultures for MLF has traditionally been Oenococcus oeni, in the last decade, Lactobacillus plantarum has also been reported as a malolactic starter, and many works have shown that this species can survive and even grow under harsh conditions of wine (i.e., high ethanol content and low pH values). Furthermore, it has been proved that some strains of L. plantarum are able to conduct MLF just as efficiently as O. oeni. In addition, L. plantarum exhibits a more diverse enzymatic profile than O. oeni, which could play an important role in the modification of the wine aroma profile. This enzymatic diversity allows obtaining several starter cultures composed of different L. plantarum biotypes, which could result in distinctive wines. In this context, this review focuses on showing the relevance of L. plantarum as a MLF starter culture in winemaking.
Descritores: Vinho/microbiologia
Lactobacillus plantarum/metabolismo
Fermentação
Malatos/metabolismo
-Vitis/microbiologia
Odorantes
Tipo de Publ: Revisão
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-1147950
Autor: Vedoato, Bruna Thaís Ferracioli; Domingues Neto, Francisco José; Pimentel Junior, Adilson; Paiva, Ana Paula Maia; Silva, Marlon Jocimar Rodrigues da; Moura, Mara Fernandes; Lima, Giuseppina Pace Pereira; Tecchio, Marco Antonio.
Título: Production, physicochemical quality and antioxidant capacity of 'Niagara Rosada' grape grafted on different rootstocks / Produção, qualidade físico-química e capacidade antioxidante da uva 'Niagara Rosada' sobre diferentes porta-enxertos
Fonte: Biosci. j. (Online);36(6):1879-1889, 01-11-2020. ilus, tab.
Idioma: en.
Resumo: The objective of this study is to evaluate the effect of rootstocks on grape production, quality and antioxidant capacity of 'Niagara Rosada' grape in two productive cycles. The work was developed in Jundiaí-SP, Brazil (26° 06' S, 46° 55' W and an average altitude of 745 m). The experimental design was in randomized blocks with subdivided plots, the plots being represented by the rootstocks and the subplots by the production cycles, with four replications, each consisting of 6 plants. The treatments consisted of a combination of 'IAC 313 Tropical', 'IAC 572 Jales', 'IAC 571-6 Jundiaí', 'IAC 766 Campinas' and '106-8 Mgt' as rootstocks and 'Niagara Rosada' as graft, and the production cycles were 2013 and 2014. The number of bunches, production and productivity of the vines, the physical characteristics of bunches, berries and stalks and the physicochemical composition of the must (soluble solids content, titratable acidity, pH and the relation soluble solids/titratable acidity) were evaluated in production cycles of 2013 and 2014). The content of chlorophylls, anthocyanins, carotenoids, flavonoids and total phenolic compounds and the antioxidant activity of grapes were also evaluated in grape berries. The rootstocks did not influence the production and physical quality of 'Niagara Rosada' grapes. As for the chemical characteristics, rootstocks only had an effect on solids content, and 'IAC 766' and '106-8 Mgt' rootstocks promoted higher values of this characteristic. Likewise, the total phenolic compounds and the antioxidant activity of the grapes were not influenced by the studied rootstocks. The vines in 2013 presented higher production and better physical characteristics of the grapes, however, the soluble solids content in this cycle was lower than in 2014.

Objetivou-se avaliar a influência de porta-enxertos na produção da videira, na qualidade e capacidade antioxidante da uva 'Niagara Rosada' em dois ciclos produtivos. O trabalho foi realizado em Jundiaí-SP, Brasil (26° 06' S, 46° 55' W e uma altitude média de 745m). O delineamento experimental foi de blocos causalizados em parcelas subdivididas, as parcelas foram representas pelos porta-enxertos e as subparcelas pelos ciclos de produção, com quatro repetições, constituídas de 6 plantas. Os tratamentos consistiram na combinação entre os porta-enxertos 'IAC 313 Tropical', 'IAC 572 Jales', 'IAC 571-6 Jundiaí', 'IAC 766 Campinas' e '106-8 Mgt' e a variedade copa 'Niagara Rosada', e os ciclos produtivos de 2013 e 2014. O número de cachos, produção e produtividade das videiras, as características físicas de cachos, bagas e engaços e a composição físico-química do mosto (teor de sólidos solúveis, acidez titulável, pH e relação sólidos solúveis/acidez titulável) foram avaliados nos ciclos de produção de 2013 e 2014. Avaliou-se ainda nas bagas das uvas o conteúdo de clorofilas, antocianinas, carotenoides, flavonoides e compostos fenólicos totais e a atividade antioxidante. Os porta-enxertos não influenciaram a produção e a qualidade física da uva 'Niagara Rosada'. Quanto as características químicas houve efeito dos porta-enxertos apenas no teor de sólidos solúveis, sendo que os porta-enxertos 'IAC 766' e '106-8 Mgt' promoveram maiores valores dessa característica. Da mesma forma, os compostos fenólicos totais e a atividade antioxidante das uvas não foram influenciados pelos porta-enxertos estudados. As videiras, em 2013 apresentaram maior produção e melhores características físicas das uvas, no entanto, o teor de sólidos solúveis nesse ciclo foi inferior ao de 2014.
Descritores: Vitis
Compostos Fenólicos
Antioxidantes
Responsável: BR396.1 - Biblioteca Central



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