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| Spitti,Acácia Mecejana Diniz Souza; Carbonell,Sérgio Augusto Morais; Dias,Carlos Tadeu dos Santos; Sabino,Luis Gustavo; Carvalho,Cássia Regina Limonta; Chiorato,Alisson Fernando. |
| ABSTRACT The slow darkening of grains is sought by bean breeders because the consumers consider that darker grains demand more time for cooking. The analysis currently used takes around 90 days to differentiate grain color among genotypes. The objective was to evaluate the color as a function of the value of L* (lightness) of carioca beans, by natural and accelerated methods to verify equivalence between methods, validation of the methodology and identification of genotypes tolerant to the darkening. The grain darkening was compared and evaluated by natural darkening method under shelf conditions, in days storage, and accelerated darkening method under ultraviolet light, in hours. The natural darkening time of 90 days was statistically equal to 24 hours of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris L.; Coloring; Lightness; Plant breeding; Ultraviolet light.. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100224 |
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| MARTÍNEZ-GIRÓN,Jader; FIGUEROA-MOLANO,Ana María; ORDÓÑEZ-SANTOS,Luis Eduardo. |
| Abstract This study aimed to evaluate the color and sensorial characteristics of a cake made with different amounts of flour made with peach palm peel flour. The flour was added at different concentrations, 2.5, 5.0, 7.5, and 10% (w/w), including a control (tartrazine). Physiochemical analyses were carried out on the cakes, including total carotenoids, CIE-L*a*b* color coordinates, and sensorial attributes. The results demonstrated that the peach palm peel flour substitution increased the total carotenoid content of the cakes. The color test showed that high levels of peach palm peel flour resulted in a decrease in the values of lightness (L*) and hue angle (h°), while the values of browning index (BI) and color change (ΔE*) increased significantly. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: By-product; Carotenoids; Sensorial; Lightness; Chromaticity; Hue. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300418 |
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| ABREU,Virgínia Kelly Gonçalves; PEREIRA,Ana Lúcia Fernandes; FREITAS,Ednardo Rodrigues de; TREVISAN,Maria Teresa Salles; COSTA,José Maria Correia da. |
| AbstractThe effect of anacardic acid on lipid stability and coloration of chicken mortadella was investigated. Antioxidants were added to chicken mortadellas, according to the treatments: no added antioxidant, 100 ppm butylated hydroxytoluene and 50, 100, 150 and 200 ppm anacardic acid. The mortadellas were stored for 90 days at 4 °C, and the analysis of lipid oxidation and color were performed. For TBARS, there was linear reduction with increased anacardic acid. According to the means test, 200 ppm anacardic acid provided the lower TBARS values. The redness decreased during storage, and, as reported by the means test, mortadella containing 200 ppm anacardic acid had lower values. The lightness of mortadellas decreased during storage. Also in accordance... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural antioxidant; Lipid oxidation; Redness; Yellowness; Lightness; Storage. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000300539 |
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| Martins, Márcio da Fonseca; Beltrame, Rafael; Delucis, Rafael de Avila; Gatto, Darci Alberto; de Cademartori, Pedro Henrique Gonzalez; dos Santos, Gleison Augusto. |
| A homogeneidade da cor da madeira em um lote a ser comercializado é de fundamental importância, pois refletirá na qualidade dos produtos resultantes de seu beneficiamento. Neste contexto, o presente trabalho objetivou avaliar, por meio da técnica de colorimetria, os parâmetros colorimétricos da madeira de 25 clones de Eucalyptus spp., bem como classificá-los em grupos, em razão do grau de similaridade de sua cor. Foram determinados os parâmetros: luminosidade (L*), coordenada cromática verde-vermelho (a*), coordenada cromática azul-amarelo (b*), cromaticidade (C*) e ângulo de tinta (h). A caracterização colorimétrica foi realizada nas faces radial e tangencial, bem como de três posições na direção radial, mediante emprego de um colorímetro. Em comparação... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Engenharia Florestal; Tecnologia de Produtos Florestais Híbridos; CIEL*a*b*; Medula-casca; Tonalidade; Luminosidade Hbrids; CIEL*a*b*; Pith-bark; Tone; Lightness. |
| Ano: 2015 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/929 |
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| Queiroz,FA de; Carvalho,MM de; Sugui,JK; Nunes,J; Felipe,L; Santos,EC dos; Tonhati,H; Boiago,MM; Hata,ME; Tholon,P; Queiroz,SA de. |
| Tinamou (Rhynchotus rufescens) is a native bird of the Brazilian fauna and has great potential to become a domesticated species. From this perspective, the objective of this study was to evaluate the carcass and main parts yield and to assess meat quality of that bird. Two trials, one studying stocking density and the other litter materials, lasting 60 days each, were conducted. The studied traits were evaluated in two birds/replicate/treatment. Performance was evaluated by the least square method. The results showed that bird age at slaughter significantly influenced carcass and breast yields (p<0.05). Mean carcass, breast, thighs+drumstick and wing yields were 86.50±2.78%, 32.84±1.50%, 27.71±1.44%, and 13.21±0.94%, respectively. Shear force, pH, water... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcass yield; Lightness; PH; Shear force; Water holding capacity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200006 |
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| Santos,Carolina de Castro; Delgado,Eduardo Francisquine; Menten,José Fernando Machado; Pedreira,Aparecida Carla de Moura; Castillo,Carmen Josefina Contreras; Mourão,Gérson Barreto; Brossi,Camila; Silva,Iran José Oliveira da. |
| Acute heat stress (AHS) modifies the structure of myofibrils affecting functional properties of meat, mainly the water holding capacity. This experiment aimed to identify changes in proteolysis and migration between the myofibrillar and sarcoplasmatic fractions due to pre-slaughter AHS. Myofibrillar fragmentation index (MFI), SDS-PAGE, western blot of vinculin (WB) and shear force (SF) were determined. Six hundred broilers (Gallus gallus) were slaughtered in three different days (ST). In each ST, groups of ten animals were placed in transport crates and submitted to AHS (35ºC, 75 - 85% RH) for 2 hours. Simultaneously, the non-stressed broilers (NS) were kept in thermoneutral environment (22ºC, 83 ± 6.6% RH) within the crates in the same density. After... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler; Heat stress; Lightness; Fragmentation index; Shear force. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000500002 |
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