Coloração da gordura e qualidade da carne de ovelhas de descarte abatidas em distintos estágios fisiológicos

Pinheiro, Rafael Silvio Bonilha; Jorge, A. M.; Souza, Hirasilva Borba Alves de; Boiago, M. M.

doi:10.1590/s0102-09352010000200029

Cited by 15 publications

(15 citation statements)

References 12 publications

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“…Lower WRC of fillets from fishes reared in cages implies loss of nutritional value due to the exudate released, which results in drier meat and compromised tenderness (MORENO et al, 2008). In this process, protein denaturation occurs (GOÑI; SALVADORI, 2010) while the opposite is observed with meats with higher water holding capacity (PINHEIRO et al, 2010) as observed in fish production in ponds.…”

Section: Resultsmentioning

confidence: 99%

Quality attributes and properties of surubim (Pseudoplatystoma spp.) meat

et al. 2015

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The aim of this study was to evaluate the quality attributes and properties of fillets from surubins (Pseudoplatystoma spp.) reared in cages and fishponds. The design of the study was completely randomized, with two treatments (cage and fishpond) and 16 replicates each. The fillets from fishes reared in cage and fishpond had a mean total weight of 134.71 ± 33.11 g and 151.56 ± 18.56 g, respectively.The following parameters were analyzed: pH, water retention capacity (WRC), color (L* brightness), (a* red), (b* yellow), and shear force (SF). The data were subjected to analysis of variance and the means were compared by Tukey's and Mann-Whitney (nonparametric) tests. Statistically significant differences (p<0.05) were observed for WRC, SF, and pH variables. Only for color attributes (L*), (a*), (b*), no statistically significant difference (p>0.05) was detected between the treatments. A lower pH (6.17 ± 0.23) was observed in fillets from surubins reared in cage. As this is close to the isoelectric point of myofibrillar proteins, it reduces their net charge and, consequently, their capacity to retain water. Lower WRC of fillets obtained from fishes reared in cage (61.46 ± 1.62%) implies loss of nutritional value through the exudate released which results in drier fillets and compromised tenderness. In fillets from cage production, SF (1.06 ± 0.22 kgf) was higher than those from fishpond, i.e., the higher the shear force, the lower the tenderness of the fillet. On the basis of the observation that fillets from fishes reared in fishponds were more tender, this study confirmed that the quality of surubin fillets is influenced by the production system. e viveiro, respectivamente, apresentavam peso total médio de 134,71 ± 33,11 g e 151,56 ± 18,56 g. Os parâmetros analisados foram: pH, capacidade de retenção de água (CRA), cor (L* luminosidade), (a* vermelho), (b* amarelo) e força de cisalhamento (FC). Os dados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey e Mann-Whitney (não paramétrico). Foram verificadas diferença estatística (p<0,05) para as variáveis CRA, FC e pH. Apenas para a variável cor (L*), (a*), (b*) não foi verificado diferença estatística (p>0,05) entre os tratamentos. Filés de surubins produzidos em tanque-rede apresentaram menor pH (6,17 ± 0,23), que, se aproxima do ponto isoelétrico das proteínas miofibrilares, reduzindo a sua carga líquida e, consequentemente, sua capacidade de reter água. A menor CRA da carne nos peixes produzidos em taque-rede (61,46 ± 1,62 %) implica perdas do valor nutritivo pelo exudato liberado, resultando em carne mais seca e com maciez comprometida. O resultado de FC da produção em tanque-rede (1,06 ± 0,22 kgf) foi maior em relação a produção em viveiro e, quanto maior a força dispensada menor é a maciez apresentada pelo corte de carne. A qualidade da carne de surubins é influenciada pelo sistema de criação. Os peixes produzidos em viveiros apresentaram carne mais macia.

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Section: Resultsmentioning

confidence: 99%

Quality attributes and properties of surubim (Pseudoplatystoma spp.) meat

et al. 2015

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“…Pinheiro et al (40) também relataram que valores maiores ou menores para força de cisalhamento da carne ovina podem existir em função de interações entre diferentes taxas de deposição de colágeno e de gordura entremeada no músculo. O fator individual pode ter contribuído para esta diferença estatística, uma vez que não foi encontrada diferença significativa em nenhum outro parâmetro estudado, e os animais foram abatidos passando pelas mesmas condições de manejo pré-abate, bem como a metodologia utilizada foi a mesma para todos os animais.…”

Section: Ribeiro Et Al (28)unclassified

Características De Carcaça E Qualidade Da Carne De Cordeiros Alimentados Com Diferentes Teores De Torta De Soja Em Substituição Ao Farelo De Soja

et al. 2016

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ResumoObjetivou-se avaliar a substituição do farelo de soja pela torta de soja sobre as características de carcaça e qualidade da carne de cordeiros Santa Inês. Foram utilizados 29 machos inteiros, com 23,63 ± 2,44 kg de peso vivo, 80 dias de idade, distribuídos de maneira inteiramente casualizada, submetidos a cinco dietas, sendo que as dietas variaram nos teores de substituição do farelo de soja pela torta de soja de 0, 25, 50, 75 e 100%. Para cada teor de substituição foram utilizados seis animais, mas no teor de 25%, cinco animais. Foram realizadas avaliações das carcaças e retirou-se o Longissimus dorsi para análises da qualidade da carne. As características da carcaça não foram afetadas pelos diferentes teores de torta de soja. Observou-se efeito quadrático para a força de cisalhamento e efeito linear decrescente para a intensidade de odor, mas não foram observadas diferenças nos demais parâmetros. A substituição do farelo de soja pela torta de soja pode ser realizada sem prejuízo à maioria das características da carcaça e de carne e altos teores de torta de soja na dieta podem resultar em benefícios às qualidades sensoriais da carne de cordeiros recebendo dietas concentradas. Palavras-chave: análise sensorial; biodiesel; força de cisalhamento; morfometria; Santa Inês. AbstractThe objective of this study was to evaluate the replacement of soybean meal by soybean cake on carcass characteristics and meat quality of Santa Ines lambs. Twenty-nine intact males were used, weighing 23.63 ± 2.44 kg, at 80 days of age, distributed randomly, submitted to five diets, with the diets differing in the levels of substitution of soybean meal by soybean cake (0, 25, 50, 75 and 100%). Each diet was provided to six animals, except the 25% diet, in which five animals were used. Carcass characteristics were evaluated, and the Longissimus dorsi was removed for meat quality analysis. The different levels of soybean cake did not affect carcass characteristics. Regarding the characteristics of meat, there was a quadratic effect for the shear force and negative linear effect on flavor intensity, but no significant differences on the other parameters were observed. Replacement of soybean meal for soybean cake can be made without affecting most of the carcass and meat characteristics, and

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“…Although the treatment with 80 g kg -1 of crude glycerin produced a less expressive color (4.35) (Table 4), this value was considered satisfactory (Mancini and Hunt, 2005). This outcome confirmed that the substitution did not alter the color attribute of goat meat or cause rejection by the tasters and that the acceptance of color depends on several factors, among them regional consumption habits and customs (Pinheiro et al, 2010).…”

Section: Discussionmentioning

confidence: 68%

Fatty acid profile, chemical composition, and sensory effects of crude glycerin on the longissimus dorsi of crossbred Boer goat kids

Rocha

Parente

et al. 2015

R. Bras. Zootec.

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-The objectives of this trial were to evaluate the fatty acid profile, chemical composition, and sensory effects of crude glycerin on the longissimus dorsi muscle of crossbred Boer goat kids. Twenty crossbred Boer goat kids (20.8±2.9 kg of BW at slaughter) were used in a completely randomized block design to determine the effect of partial replacement of corn by crude glycerin on chemical composition, longissimus dorsi muscle fatty acid profile, and sensory characteristics of meat. Kids were penned individually for 51 d and fed an isonitrogenous (140.0±2.0 g.kg -1 CP, DM basis) diet composed of 700 g.kg -1 concentrate and 300 g.kg -1 Tifton (Cynodon sp.) hay. Increasing levels of crude glycerin (80.0 g/100 g glycerol, DM basis) were 0, 40, 80 or 120 g.kg -1 . There was no effect on the moisture, protein, or total lipids in the longissimus dorsi; however, the ash content decreased linearly with glycerin addition. Linear decrease for linoleic acid (3.57, 2.84, 3.76, and 2.33) and ω6:ω3 ratio (10.61, 9.71, 7.26, and 7.18 for CG0, CG40, CG80 and CG120, respectively) was observed with crude glycerin inclusion. Saturated, monounsaturated, and polyunsaturated fatty acids were not affected by treatments. In the sensory assessment, crude glycerin changed the toughness, color intensity, and overall appreciation of the longissimus dorsi muscle. The partial replacement of corn by crude glycerin has a low impact on chemical composition and meat fatty acid profile. Based on the overall appreciation, it is recommended to include 80 g.kg -1 crude glycerin in the diet.

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Coloração da gordura e qualidade da carne de ovelhas de descarte abatidas em distintos estágios fisiológicos

Cited by 15 publications

References 12 publications

Quality attributes and properties of surubim (Pseudoplatystoma spp.) meat

Quality attributes and properties of surubim (Pseudoplatystoma spp.) meat

Características De Carcaça E Qualidade Da Carne De Cordeiros Alimentados Com Diferentes Teores De Torta De Soja Em Substituição Ao Farelo De Soja

Fatty acid profile, chemical composition, and sensory effects of crude glycerin on the longissimus dorsi of crossbred Boer goat kids

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