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      Efeito do cozimento na qualidade do músculo Semitendinosus Translated title: Effect of cooking on the quality of beef Semitendinosus muscle

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          Abstract

          O presente experimento foi realizado para determinar a efetividade do tratamento térmico em água e vapor a 80 °C tendo como objetivo a inativação do Clostridium botulinum tipo E, utilizando-se amostras de Semintendinosus. Foram realizadas ainda a avaliação da maciez objetiva, utilizando-se a análise de força de cisalhamento, e a avaliação sensorial dos atributos de suculência, maciez subjetiva, "flavor" e presença de colágeno. O tratamento a 80 °C foi efetivo na eliminação do microrganismo, contudo não houve diferença significativa no atributo maciez objetiva (força de cisalhamento) avaliado nos dois tratamentos utilizados. A avaliação sensorial apresentou correlação positiva entre os atributos maciez e suculência, enquanto o colágeno apresentou correlação negativa com a maciez. O "flavor" não apresentou correlação com os atributos maciez, suculência e presença de colágeno.

          Translated abstract

          The purpose of the experiment reported here was to determine the effectiveness of heat treatments in water and in steam at 80 °C to inactivate the bacterium Clostridium botulinum type E in samples of beef Semitendinosus muscle. The product’s tenderness was evaluated based on a Warner-Bratzler Shear Force (WBSF) analysis and its attributes of juiciness, subjective tenderness, flavor and connective tissue were evaluated sensorially. The treatment at 80 °C effectively killed the bacterium, but no significant difference was found in the attribute of objective tenderness (shear force) evaluated after the two treatments. The sensorial analysis indicated a positive correlation between the attributes of juiciness and tenderness, while the connective tissue showed a negative correlation to tenderness. Flavor proved uncorrelated with tenderness, juiciness and connective tissue.

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          Most cited references17

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          Effects of heat on meat proteins - Implications on structure and quality of meat products.

          E Tornberg (2005)
          Globular and fibrous proteins are compared with regard to structural behaviour on heating, where the former expands and the latter contracts. The meat protein composition and structure is briefly described. The behaviour of the different meat proteins on heating is discussed. Most of the sarcoplasmic proteins aggregate between 40 and 60 °C, but for some of them the coagulation can extend up to 90°C. For myofibrillar proteins in solution unfolding starts at 30-32°C, followed by protein-protein association at 36-40°C and subsequent gelation at 45-50°C (conc.>0.5% by weight). At temperatures between 53 and 63°C the collagen denaturation occurs, followed by collagen fibre shrinkage. If the collagen fibres are not stabilised by heat-resistant intermolecular bonds, it dissolves and forms gelatine on further heating. The structural changes on cooking in whole meat and comminuted meat products, and the alterations in water-holding and texture of the meat product that it leads to, are then discussed.
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            Sensory aspects of consumer choices for meat and meat products.

            The topics discussed in this paper are the changing demand for meat and the factors that influence this demand. These factors include increased health concerns, change in demographics, the need for convenience, changes in the distribution of meat, and price. Finally, the paper covers the meat industry's need for understanding the consumer and the measurement methods used to assess consumer preferences.
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              Effect of marbling degree on beef palatability in Bos taurus and Bos indicus cattle.

              This study was designed to evaluate the relationship between marbling score and breed-type (Bos taurus vs .05) from Modest or Moderate marbling. In addition, variation in shear force was lower (P .05) by marbling score in either Bos taurus or Bos indicus cattle. Percentage yield of retail product decreased (P .05) to shear force or tenderness rating.(ABSTRACT TRUNCATED AT 250 WORDS)
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                Author and article information

                Journal
                cta
                Food Science and Technology
                Food Sci. Technol
                Sociedade Brasileira de Ciência e Tecnologia de Alimentos (Campinas, SP, Brazil )
                0101-2061
                1678-457X
                September 2007
                : 27
                : 3
                : 441-445
                Affiliations
                [01] São Paulo SP orgnameMinistério de Agricultura, Pecuária e Abastecimento, Serviço de Inspeção Federal no Estado de São Paulo Brasil
                [02] Piracicaba SP orgnameEscola Superior de Agricultura ‘Luiz de Queiroz’ orgdiv1Departamento de Agroindústria, Alimentos e Nutrição Brasil ccastill@ 123456esalq.usp.br
                [03] Piracicaba SP orgnameEscola Superior de Agricultura ‘Luiz de Queiroz’ orgdiv1Departamento de Ciências Exatas Brasil
                Article
                S0101-20612007000300003 S0101-2061(07)02700303
                67af9ef3-f924-4552-8b7e-51f38d821176

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 02 February 2006
                : 18 July 2007
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 23, Pages: 5
                Product

                SciELO Brazil


                tenderness,beef,thermobacteriology,Clostridium botulinum type E,cozimento,qualidade,carne,maciez,Clostridium botulinum tipo E,termobacteriologia,quality,cooking

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