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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 95 (1973), S. 2058-2059 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 20 (1973), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Adenosylmethionine decarboxylase from rat brain has been found to be similar to the same enzyme isolated from other rat tissues in regard to kinetic parameters, pH optimum, putrescine requirement, and subcellular location. Evidence is presented that pyridoxal phosphate is not the functional cofactor in enzymatic decarboxylation by the rat brain preparation. The capacity for spermidine synthesis in developing rat brain was determined by measurement of the activity of adenosylmethionine decarboxylase. The activity increased dramatically after 10 days of postnatal age. This increase occurred after the period of maximum nucleic acid synthesis, an observation which suggests that spermidine may have a role in the functional development of the brain.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 17 (1970), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— The composition of sphingolipids and phospholipids of mouse brain during myelination was determined in normal animals and in mice with a genetically-determined disorder of myelin formation. Myelination was normally characterized by a two-fold increase in total phospholipids of brain, a four-fold increase in total sphingolipids, and a six-fold increase in cerebrosides. The Jimpy mutant, with defective formation of myelin in the central nervous system, demonstrated a marked deficiency of cerebrosides and a significantly lower content of total sphingolipids, without alteration of the composition of phospholipids. The increasing content of cerebrosides in the brains of the leucodystrophic mutant at the time in development when myelination is most active and the subsequent relative deficit suggest that the failure of myelin formation is not the result of a defect in biosynthesis of cerebrosides.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 94 (1972), S. 6776-6779 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 182 (1971), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
    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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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 36 (1971), 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: SUMMARY The muscles of stress-susceptible animals exhibit an extremely rapid rate of glycolysis when subjected to either excision or exsanguination anoxia. The adaptation of the whole-body perfusion technique to the intact animal makes it possible to study the influence of a wide variety of reagents while maintaining the structural integrity of the musculature. This paper outlines the perfusion technique as applied in this laboratory to adult pigs, and in addition describes a biopsy procedure which permits the use of one longissimus muscle as an untreated control for the other, thereby overcoming the problem of wide inter-animal variability. Results are presented of experiments designed to validate the perfusion and biopsy routines, and an account is given of preliminary investigations of the effects of added calcium and magnesium ions.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 35 (1970), 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: Concentrations of phosphocreatine (PC), adenosine triphosphate (ATP) and lactic acid were determined in longissimus muscle from 7 “stress-resistant” Chester White pigs and 8 “stress-susceptible” Poland China pigs at several intervals during the loss of extensibility postmortem. Calcium-binding ability of the sarcoplasmic reticulum and postmortem tension development of longissimus muscle also ware determined. Loss of extensibility was completed sooner in longissimus muscle from stress-susceptible pigs than from stress-resistant pigs. For the most part, longissimus muscle samples from stress-susceptible pigs had lower (P 〈.05) levels of PC and ATP and higher (P 〈 .05) levels of lactic acid at identical stages of change in extensibility than did samples from stress-resistant pigs. At identical stages of change in extensibility in “fast” and “slow-glycolyzing” muscles, there were no significant differences in the ability of the sarcoplasmic reticulum preparations to bind calcium or in the muscle's ability to develop isometric tension.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 5 (1970), S. 0 
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: A study has been made to determine if organoleptically and microbiologically acceptable beef could be produced by pre-rigor excision followed by rigor setting and short-term aging of bovine muscle. Six carcasses (three steers, two young bulls and one old bull) were subjected to each of three treatments: (1) the control side of each carcass was chilled at 9°C for 24 hr; (2) one sample (PRE-24) from each of five sites on the other side of each carcass was removed pre-rigor and stored at 15°C for 24 hr; (3) one sample (PRE-48) from each of five sites was stored at 15°C for 48 hr.Although the PRE-24 samples of the middle of the biceps femoris, anterior longissimus, and posterior longissimus were generally assessed to be similar to their controls in tenderness and other organoleptic properties a further 24 hr storage at 15°C resulted in a significant tenderization of the PRE-48 samples from these locations relative to their controls (P 〈 0.05). There was no treatment effect on the semimembranosus, whereas the semitendinosus toughened after being excised pre-rigor. Mean bacterial numbers were held within the range 102−105/cm2 muscle surface after 48 hr storage at 15°C in a sealed, gas-impermeable bag.The investigation shows that a procedure for the pre-rigor excision of bovine muscle can produce organoleptically acceptable beef of a satisfactory microbiological standard.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 29 (1973), S. 141-142 
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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