ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Changes in the solubility of the primary muscle proteins attributable to the presence and growth of Pseudomonas perolens were increases in the extractability of myofibrillar and nonprotein nitrogen components at the expense of the sarcoplasmic and stroma proteins. Initiation of the production of high levels of proteolytic enzyme by Pseudomonas perolens in inoculated pork occurred concurrently with a rapid rise in pH and the peak of the bacterial growth curve. Incubation of porcine muscle at 3°C with or without bacterial cells resulted in minor ultrastructural changes. The purified proteolytic enzyme extract produced by Pseudomonas perolens appeared to cause the removal of the Z line and M line after as little as 4 days incubation. Fragmentation of the myofibrils and disintegration of actin filaments was evident after 8 days. Those samplcs containing bacterial cells exhibited varying degrees of ultrastructural damage after 8 days incubation. Localized disruption of myofibrils was observed and may have been due to localized growth or enzyme claboration of bacterial cells.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1974.tb17987.x
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