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Saad, Abdelgawad Mohammed; Ibrahim, Ayman; El-Bialee, Nazeer. |
Nondestructive optical methods based on image analysis have been used for determining quality of tomato fruit. It is rapid and requires less sample preparation. A samples of fresh tomatoes were picked at different maturity stages, and determining chromaticity values (L*,a*,b*,a*/b*,h˚and ΔE) by image analysis and colorimeter. Total soluble solids (TSS), were measured by refractometer, lycopene extracting and expressed as mg/kg fresh tomato (FW). Results indicated that, during ripening both L*, b*, h˚, and ΔE tendency to decline, opposite tendency was determined with a*, a*/b* ratio, TSS and lycopene content. Chromaticity values have an important impact in internal quality parameters. Where, avg. of TSS, entire class and lycopene content had a positive... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Postharvest Engineering tomato; Image color analysis; Chromaticity values; Internal quality; TSS; Lycopene content. |
Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3504 |
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Machado,Francisca Ligia de Castro; Costa,José Maria Correia; Batista,Emanuele Nogueira. |
This study aimed at evaluating compositional changes in the quality of 'Ortanique' tangor after coating with the carnauba-based waxes Aruá Tropical® or Star Light®. The storage conditions studied simulated those of local marketing (22 ± 2 °C, 60 ± 5% RH). Non-destructive analysis, mass loss, peel color, and sensory evaluation, were performed upon coating and every three days up to the fifteenth day of storage. Destructive analysis, peel moisture content, chlorophyll of the peel, pulp color, juice content, soluble solids (SS), titratable acidity (TA), pH, and soluble solids to titratable acidity ratio, were performed upon coating and every four days up to the sixteenth day of storage. The assay was conducted using an entirely randomized design, with three... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis (L.) Osbeck x Citrus reticulata Blanco; Moisture loss; Visual quality; Internal quality. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000200009 |
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Almeida,Isolina Maria Leite de; Ono,Elizabeth Orika; Rodrigues,João Domingos. |
This research evaluated the effects of auxins and gibberellins applied at pre-harvest on the quality of orange juice. Orange trees, Citrus sinensis Osbeck, cv. 'Pêra' were sprayed in three applications, at 45-day intervals, with the following treatments: GA3 + 2,4-D at 12.5mg L-1 each; GA3 + 2,4-D at 25mg L-1; GA3 + 2,4-D at 37.5mg L-1; GA3 + NAA at 12.5mg L-1; GA3 + NAA at 25mg L-1; GA3 + NAA at 37.5mg L-1; NAA + 2,4-D at 12.5mg L-1; NAA + 2,4-D at 25mg L-1; NAA + 2,4-D at 37.5mg L-1, and a control. The treatments did not change juice quality, and showed no plant growth regulator residues 110 days after the last application in every case below 0.05mg L-1. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis; Internal quality; Plant growth regulators; Residue. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000300011 |
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