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  • 1975-1979  (41)
  • 1970-1974  (19)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 39 (1974), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 39 (1974), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 38 (1973), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 39 (1974), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 38 (1973), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Steaks from 58 beef carcasses were used to determine the effects of antemortem injections of proteolytic enzyme in increasing tenderness and/or in reducing tenderness variability among bullock carcasses. Sensory panel ratings indicated that steaks from the carcasses of treated bullocks did not differ significantly from steaks from treated steer carcasses in tenderness or overall satisfaction, but were significantly more tender and satisfactory overall than steaks from untreated bullocks. Variation in tenderness scores within the group of steaks from treated bullocks was reduced to a level more nearly comparable to that of steaks from treated steers. Since antemortem injections of papain increased tenderness and reduced the variability in tenderness among steaks from bullock carcasses, such treatment could be used to more effectively merchandise beef from young bulls.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A comparison of changes in tenderness in response to heat was made between meat from three animals that had one side suspended from the achilles tendon and the other side suspended from the obturator foramen. There was a decrease in tenderness due to heating muscles to higher internal temperatures as evidenced by higher shear force values and lower sensory panel scores for all muscles, except for shear of the longissimus, biceps femoris, and psoas major and ease of fragmentation for the longissimus and the gluteus medius. Analysis of the regression lines of shear and fragmentation versus mean temperature at a given cooking time indicated there was more toughening due to higher internal temperatures in a majority of muscles that were allowed to shorten than there was in those that had been prevented from shortening. These data indicate that muscles which are tenderized by prevention of shortening are less susceptible to toughening when cooked to greater degrees of doneness.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The control (C) side of 23 animals was placed in a 2°C chill room at 1 hr postmortem, while the other side was high temperature cdnditioned (HT) at approximately 22°C for 4 hr postmortem, at 12°C for an additional 8 hr and was then placed in the 2°C chill room. The activity of cathepsin C and β-glucuronidase was measured on the nuclear, micro somal, and unsedimentable fractions at 12, 18 and 24 hr postmortem in order to determine the amount of sedimentable and free enzyme activity at these postmortem times. High temperature conditioning enhances the disruption of the lysosomal membrane as evidenced by a significant increase in percent of free enzyme activity at 12 hr postmortem for both cathepsin C and β-glucuronidase. There was also a significant decrease in total activity for both enzymes of the HT group at 12 hr postmortem due to autolysis of the free enzyme. These differences were not present at 18 and 24 hr postmortem (except for decreased total activity of cathepsin C at 18 hr), indicating that differences caused by high temperature conditioning take place very early postmortem and that the differences in enzyme activities are not detectable at later postmortem times. These results indicate that some of the differences in tenderness produced by HT treatments are possibly associated with the increased level of free lysosomal enzymes during the first 12 hr postmortem.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The effect of freezing on the mechanical properties of lamb chops was evaluated. Fresh and frozen lamb chops (20 pairs) were cooked, cooled and tested in a constant loading rate, pneumatically operated testing machine with output fed into an X-Y plotter. Core samples (1.27 cm diam) from the longissimus dorsi muscle of the cooked lamb chops were sheared at the rate of 5 cm/min by use of a Warner-Bratzler shearing device in the testing machine. From the force-deformation curves, the following values were determined: (1) force, stress, deformation and strain at point of inflection, bioyield and rupture points; (2) area under the curve; (3) apparent modulus of elasticity; and (4) secant modulus. The values for apparent modulus of elasticity, deformation, strain, secant modulus and area under the force-deformation curve to the point of inflection were significantly (P 〈 0.05) different for fresh and frozen chops. Analysis of force data and stress values indicated that these values were not influenced significantly by freezing and subsequent frozen storage.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Boneless strip loins (n = 90) and inside rounds (n = 90) from Heavy-Choice, Heavy-Good and Light-Good carcasses were randomly assigned to one of six treatments representing combinations of storage interval (7 or 14 days), blade tenderization (prior to or following storage) and packaging (vacuum packages or polyethylene bags). Vacuum packaging was much more satisfactory than polyethylene packaging for maintaining appearance of subprimal cuts following storage and for assuring desirable overall appearance of steaks during retail display. Subprimal cuts should be blade tenderized after, rather than prior to, storage to minimize weight losses of subprimals during storage, but time of blade tenderization did not affect retail caselife or palatability traits. Light-Good beef was not generally inferior to that from Heavy-Choice or Heavy-Good carcasses in storage-life, retail caselife or palatability if subprimal cuts were stored in vacuum packages. However, Light-Good strip loins which were blade tenderized prior to storage and stored in polyethylene bags were discolored and unattractive following storage and produced steaks which had very limited retail caselife. Blade tenderization increased tenderness above that achieved by aging alone but did not otherwise affect palatability.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Ground beef with added beef plasma protein concentrate was evaluated mechanically and organoleptically to measure the effect on the binding forces in the cooked meat. The meat patties were cooked, cooled and tested in a constant loading rate, pneumatically operated testing machine with output fed into an X-Y plotter. From the force-deformation curves, the following values were determined: (1) force, stress and deformation at the bioyield point; (2) area under the curve to represent work performed; (3) initial tangent modulus; (4) tangent modulus; and (5) secant modulus. A special holding device was developed to permit tension loading of the patties at a rate of 5 cm/min until rupture of the meat occurred. Treatments consisted of: (1) all meat (control); (2) addition of 1% plasma protein; (3) 2% plasma protein added; (4) addition of 1% plasma protein rehydrated to equivalent moisture content of control; and (5). addition of 2% plasma protein rehydrated to equivalent moisture content of control. Treatments 2, 3, 4 and 5 were significantly higher (P 〈 0.01) than the control group for force and stress at bioyield and area under the curve. Significant differences (P 〈 0.05) among treatments were obtained for deformation at bioyield and tangent modulus. Companion samples from the above treatments were evaluated for elasticity and toughness by a taste panel. The sensory panel ratings for toughness were significantly and positively correlated (P 〈 0.01) with values obtained in the mechanical tests for force at bioyield point, tangent modulus and area under the curve. Sensory evaluations for the elasticity property of the patties were not significantly influenced by the formulation treatments nor was elasticity (sensory panel rating) sigkcantly associated with the mechanical properties considered in the current study.
    Type of Medium: Electronic Resource
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