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  • Digitale Medien  (16)
  • 1975-1979  (10)
  • 1970-1974  (6)
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  • Digitale Medien  (16)
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  • 1
    Digitale Medien
    Digitale Medien
    ADENYLATE CYCLASE AND CYCLIC 3′,5′-NUCLEOTIDE PHOSPHODIESTERASE ACTIVITIES IN MUSCLES FROM STRESS-SUSCEPTIBLE AND CONTROL PIGS (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Recent results from our laboratory indicate that muscles obtained at 3 min postmortem from stress susceptible (SS) pigs have slightly higher levels of cyclic AMP (c-AMP) than muscles from control (C) pigs. Since c-AMP affects glycogenolysis and an abnormality of this process is a characteristic of SS pigs, this research was conducted to determine whether the elevation in c-AMP level is due to an increase in the rate of synthesis or to a decrease in the rate of c-AMP degradation. Specific activities of adenylate cyclase, the synthetic enzyme, were 146 f 62 (SD) for SS and 168 ± 46 pmoles/min/mg protein for-C; this difference was not significant (P = 0.05). Specific activities of cyclic 3′,5′-nucleo-tide phosphodiesterase, the degradative enzyme, were 403 ± 58 for SS and 415 ± 66 pmoles/min/mg protein for C; this difference was not significant (P = 0.05).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1977.tb01231.x
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  • 2
    Digitale Medien
    Digitale Medien
    RELATIONSHIP OF CYCLIC-AMP AND PHOSPHORYLASE a IN STRESS-SUSCEPTIBLE AND CONTROL PIGS (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Muscles from stress-susceptible (SS) pigs are often characterized by a rapid rate of glycogenolysis, but the mechanism which is responsible for this abnormality is unknown. As part of an effort to define the mechanism, we determined the relationship between cyclic AMP (c-AMP) and phosphorylase a activity in SS and control (C) pigs. Longissimus muscles were obtained from SS and C uias at 3. 30. 60 and 120 min postexsanguination. At 3 mm, c-AMP levels were 1555 ? 94 and 1309 ± 29 pica moles/g muscle from SS and C, respectively, and differed significantly (P = 0.05). Levels at ofher times were not significantly different. Ratios of phosphorylase a to a±b (total) activities at 3 min were 0.303 ± 0.047 and 0.157 ± 0.028 for SS and C, respectively, and differed significantly (P = 0.05). Differences were not significant after 3 min. Total activities at 3 min were 0.617 ± 0.119 and 0.535 ± 0.047 mg phosphorus liberated/10 min/mg protein. These results, without accounting for ofher mechanisms which might regulate phosphorylase activation, indicate that higher c-AMP levels at 3 min could produce higher phosphorylase a levels in SS than in C pigs. Whether this difference is adequate to explain the difference in rate of glycogenolysis needs further clarification.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1977.tb01230.x
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  • 3
    Digitale Medien
    Digitale Medien
    PALATABILITY AND VISUAL ACCEPTANCE OF DARK, NORMAL AND PALE COLORED PORCINE M. LONGISSIMUS (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Pork loins from carcasses weighing 68–75 kg were compared for quality characteristics. A total of 120 loins, with equal numbers of pale and watery, normal and dark colored loins, were evaluated. Pale chops had a significantly higher cooking loss than normal or dark colored chops. The consumer panel scored the pale chops significantly lower in organoleptic acceptability than normal or dark chops. The trained panel gave a similar rating for the organoleptic evaluation. When the consumer panel selected pork chops from a retail display case, the normal colored chops received the highest rating and the pale, watery chops the lowest. The pale chops were the most unstable and developed a greenish-gray cast after 2–3 days' storage. The normal colored chops had significantly more intramuscular fat and less protein than either pale or dark chops.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1976.tb00685.x
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  • 4
    Digitale Medien
    Digitale Medien
    ADENOSINE 3′,5′-CYCLIC MONOPHOSPHATE IN NORMAL PORCINE MUSCLES (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 39 (1974), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: As part of a study to define the etiology of pale, soft and exudative pork and porcine stress syndrome, some properties of cyclic AMP, a compound which mediates the action of epinephrine, were studied. Results show that cyclic AMP is uniformly distributed in hog skeletal muscles both within and between muscles and is unstable at 2° but stable at - 20°C and below. Under the conditions of the experiments, no simple relationship is obvious between rate of glycogen breakdown and concentration of cyclic AMP.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1974.tb17988.x
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  • 5
    Digitale Medien
    Digitale Medien
    LYSOSOMAL-TYPE ENZYMES IN BEEF LONGISSIMUS DORSI MUSCLE (1970)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 35 (1970), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Biochemical evidence for the presence of lysosomes in bovine longissimus dorsi muscle has been presented. Comparisons of enzymatic activities among lysosomal fractions from rat liver, bovine liver and bovine I. dorsi muscle indicate that there are specific as well as organic differences with respect to the activities of some of the enzymes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1970.tb12153.x
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  • 6
    Digitale Medien
    Digitale Medien
    CYCLIC AMP IN LONGISSIMUS MUSCLE FROM CONTROL AND STRESS SUSCEPTIBLE PIGS (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: As part of a continuing study to define the etiology of porcine stress syndrome and pale, soft, exudative pork, cyclic AMP (c-AMP) levels in longissimus muscle from stress susceptible (SS) and control (C) pigs were compared. At 3 min postmortem, levels of c-AMP were significantly higher for SS than for C pigs; thereafter differences were not significant. Variations in initial levels of glycogen affected lactate, pH and color of the postmortem muscles but did not affect c-AMP levels. Initial levels of glycogen were higher for SS pigs killed in the morning than for those killed in the afternoon. Results of this study indicate that further study, using greater numbers of pigs, is warranted to establish whether the 3 min postmortem level of c-AMP can be used as an objective measure of stress susceptibility.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1976.tb01113.x
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  • 7
    Digitale Medien
    Digitale Medien
    A Research Note. LYSOSOMAL ENZYME ACTIVATION AND PROTEOLYSIS OF BOVINE MUSCLE (1971)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 36 (1971), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1971.tb03322.x
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  • 8
    Digitale Medien
    Digitale Medien
    CHEMICAL COMPOSITION OF CHOPS FROM PALE, SOFT, EXUDATIVE (PSE) AND NORMAL PORK LOINS (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Chops from normal or pale, soft and exudative (PSE) pork loins were displayed under simulated retail conditions, and drip was collected. During display, drip from chops was greater for PSE than normal loins, but the drip from both types of chops contained similar concentration of protein, free amino acids, total amino acids, sodium, potassium, calcium and magnesium. However, loss per kg lean was higher in the PSE chops for protein (P 〈 0.01) and potassium, calcium and magnesium (P 〈 0.05). The lean tissue from PSE chops contained more protein but less ether extract and energy than did lean from normal chops. Differences between PSE and normal chops were not significant for dry matter, ash, sodium, potassium, calcium, magnesium, phosphorus, iron, copper, zinc, free amino acids or total amino acids.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1979.tb08474.x
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  • 9
    Digitale Medien
    Digitale Medien
    Humoral autoregulation of blood flow and blood pressure (1972)
    Springer
    Cellular and molecular life sciences 28 (1972), S. 528-530 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Zusammenfassung Vasoaktive Substanzen im arteriellen Blut können charakteristische Reaktionen des lokalen Strömungswiderstandes hervorrufen. Die einfachsten Beispiele dieser humoralen Autoregulation können durch intraarterielle Infusion von Acetylcholin (Autoregulation der Strömung) oder Noradrenalin (Autoregulation des Drucks) demonstriert werden. Es wird angenommen, dass der humoralen Autoregulation Bedeutung bei der normalen und pathologischen Kreislaufregulation zukommt.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01931859
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  • 10
    Digitale Medien
    Digitale Medien
    A nonlinear property of the renal autoregulation (1972)
    Springer
    Cellular and molecular life sciences 28 (1972), S. 527-528 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Zusammenfassung Die A. renalis von Hunden wurde mit arteriellem Blut mittels einer peristaltischen Pumpe durchströmt. Wir fanden hierbei eine bemerkenswerte Druckantwort auf kurze Strömungspulse, die spezifisch für die Niere zu sein scheint. Eine anschauliche Deutung der Reaktion konnte mit Hilfe einer einfachen Analogsimulation gegeben werden.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01931858
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