Grapes
Mostrando 37-48 de 230 artigos, teses e dissertações.
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37. Melatonin treatment of pre-veraison grape berries modifies phenolic components and antioxidant activity of grapes and wine
Abstract A comprehensive investigation was conducted to determine the effects of exogenous melatonin treatment of pre-veraison grapes on phenolic components and antioxidants of grape berries and wine. The results showed an increase in the concentration of cyanin-3-O-glucoside, peonidin derivatives, and two flavanols [namely (+)-catechins and (−)-epicatechi
Food Sci. Technol. Publicado em: 11/01/2018
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38. DIAGNOSIS AND RECOMMENDATIONS FOR THE BIOCLIMATIC DESIGN OF GRAPE PACKING HOUSES IN HOT AND DRY CLIMATE
ABSTRACT The bioclimatic architecture can contribute significantly to moderate thermal environment of agricultural installations, reducing the energy input used in the air conditioning. The present article presents the results of a diagnosis made in packing houses of table grapes, located in a semi - arid region in the Brazilian Northeast. The objective was
Eng. Agríc.. Publicado em: 2018-01
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39. Identification of the potential inhibitors of malolactic fermentation in wines
Abstract This exploratory work aims to identify the potential inhibitors of lactic bacterial growth and to propose enological practices to guarantee the occurrence of spontaneous malolactic fermentation (MLF) in wines from traditional and double-pruning management harvests in southeast Brazil. One white wine from a summer harvest and one red wine from a wint
Food Sci. Technol. Publicado em: 26/10/2017
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40. Water loss in table grapes: model development and validation under dynamic storage conditions
Abstract Water loss is a critical problem affecting the quality of table grapes. Temperature and relative humidity (RH) are essential in this process. Although mathematical modelling can be applied to measure constant temperature and RH impacts, it is proved that variations in storage conditions are normally encountered in the cold chain. This study proposed
Food Sci. Technol. Publicado em: 21/09/2017
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41. Fruit sphere microenvironments and berry phenolic content of Cabernet Sauvignon (Vitis vinifera L.) cultivated under rain-shelter systems with coloured plastic film
Abstract Rain-shelter cultivation has been proven an important cultivation method for grape-plantings in continental monsoon climate zones, of which white plastic films are the most common shelter material. However, while this method and material reduces the occurrence of the disease, it can also decrease the grape berry quality. Five colours (including red,
Food Sci. Technol. Publicado em: 20/07/2017
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42. Quality evaluation of red wines produced from the Isabella and Ives cultivar (Vitis labrusca): physicochemical parameters, phenolic composition and antioxidant activity
Abstract The objective of this study was to evaluate the quality of commercial red wines (Isabella and Ives [IsB]; Isabella, Ives, Seibel and Concord [IsSC]; and Isabella and Ives [IsBb]) produced from Isabella and Ives grapes grown in southern Brazil. The parameters required by Brazilian law were evaluated, and the chemical parameters of the phenolic compou
Food Sci. Technol. Publicado em: 29/05/2017
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43. Plant parameters and must composition of ‘Syrah’ grapevine cultivated under sequential summer and winter growing seasons
ABSTRACT Plant variables and must physicochemical properties were evaluated for the grapevine ‘Syrah’ cultivated in sequential growing seasons (summer and winter) from 2011 to 2015. The vines were trellised in vertical shoot position, grafted on Paulsen 1103, with approximate density of 5,800 plants∙ha−1. They were grown under plastic overhead cover.
Bragantia. Publicado em: 15/05/2017
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44. PESTICIDES DEPOSITION IN VINEYARDS ON DIFFERENT CONDITIONS OF LEAF WETNESS
ABSTRACT The high susceptibility to diseases of fine table grapes cultivars demand intensive use of pesticides, and the presence of water on the leaf surface can worsen the deposition of these products. The objective of this study was to evaluate the spray deposition in vine leaves in different conditions of leaf wetness, and test the effectiveness of an art
Eng. Agríc.. Publicado em: 2017-04
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45. THERMAL ENVIRONMENT OF TABLE GRAPE PACKING HOUSES IN THE SÃO FRANCISCO VALLEY
ABSTRACT The aim of this study was to characterize the thermal environment of the sorting and packing sectors of small, medium and large packing houses in the São Francisco Valley, Northeast of Brazil. Micrometeorological data were monitored every 15 minutes for 20 days during winter 2014 and summer 2015. The parameters evaluated were air temperature (°C),
Eng. Agríc.. Publicado em: 2017-02
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46. Volatile metabolites produced from agro-industrial wastes by Na-alginate entrapped Kluyveromyces marxianus
Abstract The aim of this study was to evaluate the effects of alginate entrapment on fermentation metabolites of Kluyveromyces marxianus grown in agrowastes that served as the liquid culture media. K. marxianus cells entrapped in Na-alginate were prepared using the traditional liquid-droplet-forming method. Whey and pomaces from processed tomatoes, peppers,
Braz. J. Microbiol.. Publicado em: 2016-12
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47. Evaluation of QuEChERS Sample Preparation and Gas Chromatography Coupled to Mass Spectrometry for the Determination of Pesticide Residues in Grapes
An effective analytical method for pesticides multiresidue determination in grape samples was developed and validated. A modified quick, easy, cheap, effective, robust and safe (QuEChERS) method was used to extract the target compounds. Several sorbent materials were tested for the clean-up step using dispersive solid phase extraction (d-SPE) and Florisil®
J. Braz. Chem. Soc.. Publicado em: 2016-09
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48. Canopy management effects on ‘Syrah’ grapevines under tropical semi-arid conditions
ABSTRACT The aim of this study was to evaluate the effects of shoot topping and leaf removal practices on vegetative vigor, yield and physicochemical characteristics of the 'Syrah' grape in the semi-arid tropical climate conditions of the São Francisco River Valley in the northeast of Brazil. The experiment was conducted over five growing cycles from 2010 t
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-06