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  • 1975-1979  (4)
  • 1977  (4)
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  • 1975-1979  (4)
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  • 1
    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: The study was designed to determine if two types of thermocouples give the same readings when placed in the same steak and if not, which thermocouple actually gives the more accurate temperature measurement. The larger thermocouple was made of 23 gauge (0.048 cm diam) copper/constantan wire; the smaller, 40 gauge (0.008 cm diam). Results indicate cooking times will be shorter in small steaks if the larger thermocouples are used. There is evidence the larger thermocouples conduct heat into small steaks whereas the smaller thermocouples do not; the smaller thermocouples give a better indication of the internal temperature of the meat than do the larger thermocouples.
    Type of Medium: Electronic Resource
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  • 2
    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: Twelve batches of frankfurters were prepared to contain 10, 25 or 40% mechanically deboned (MDB) meat from each of four sources (young goat, old goat, mutton and pork) and compared to a control frankfurter batch comprised of manually deboned beef and pork. MDB pork (derived from neckbones, vertebrae and ribs which had been previously debohed manually) contained less (P 〈 0.05) moisture and protein as well as more (P 〈 0.05) fat, ash and calcium than old goat, young goat and mutton (all of which were obtained by mechanically deboning whole carcasses). There were no major differences in moisture, fat or protein among the 13 batches of frankfurters. Processing characteristics (extent of fatting-out, ease of peelability, external surface color) differed very little when frankfurters containing MDB goat or MDB mutton were compared with control frankfurters. Frankfurters containing 10% MDB pork were acceptable in processing traits, but those containing 25% or 40% of MDB pork were very susceptible to mechanical deformation. Consumer panelists (n = 95) generally preferred or did not dislike the flavor, juiciness and texture of frankfurters containing 10, 25 or 40% MDB goat (young or old); 10, 25 or 40% MDB mutton; or 10% MDB pork when compared to control frankfurters. Frankfurters containing 25% or 40% MDB pork were assigned lower (P 〈 0.05) palatability ratings than were control frankfurters. Data suggest than desirability of MDB meat for use in processed meats may depend more on the proportion of bone in the meat that is mechanically deboned than upon differences in species.
    Type of Medium: Electronic Resource
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  • 3
    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: The effect of electrical stimulation (100 volts, 5 amps for approx 84–100 set) of beef, lamb and goat carcasses on meat palatability was evaluated. Twenty-nine steers, 14 lambs and 11 goats were slaughtered, split into sides and one side from each carcass was electrically-stimulated immediately before chilling by use of a commercial stunning device. Taste panel evaluation and Warner-Bratzler shear values indicated that longissimus muscle samples from electrically stimulated sides of all three species were significantly more tender than samples from the untreated sides. Tenderness ratings for samples from the legs of lamb and goat carcasses indicated that the differences between treated and control samples were not of the same magnitude as those for samples of the longissimus. Flavor ratings for samples from electrically stimulated sides were significantly higher (P 〈 0.01) for beef; however, no significant differences were observed between samples from treated and cqntrol sides of lamb and goat carcasses. These data suggest that electrical stimulation can be utilized to improve the tenderness of beef, lamb and goat carcasses.
    Type of Medium: Electronic Resource
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  • 4
    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: Bovine muscle samples were fractionated and assayed to assess the effects of high postmortem temperatures on lysosomal enzymes and muscle fragmentation values. Samples of the longissimus dorsi muscle were excised from both sides of six animals. One muscle was held at 37°C (HT) and the other was maintained at 2°C as control (C). The pH of the muscles was determined at 1, 4, and 12 hr postmortem. After 12 hr the muscles were homogenized and centrifuged to separate sedimen-table and unsedimentable fractions which were assayed for β-glucuronidase and cathepsin C activities. A fragmentation value was also determined for each sample. The pH of the HT samples dropped more rapidly and was significantly lower at both 4 and 12 hr. No detectable difference in total β-glucuronidase activity was observed between HT and C samples but the distribution was markedly altered as shown by significant differences in the percent of total activity that was unsedimentable (HT 〉 C, P 〈 0.025) and specific activities of the sedimen-table (HT 〉 C, P 〈 0.025) and unsedimentable (HT 〉 C, P 〈 0.025) fractions. For cathepsin C there was a significant drop in total enzyme activity (HT 〉 C, P 〈 0.005) resulting from an apparent degradation of the unsedimentable enzyme which had been released by the HT treatment. The fragmentation values were significantly different showing that the HT samples had probably undergone limited proteolysis resulting in a reduction of muscle fragment size after homogenization. These results add support for the role of lysosomal enzymes in postmortem tenderization.
    Type of Medium: Electronic Resource
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