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The Relative Roles Of Initial And Residual Sodium Nitrite On Germination Of Clostridium Botulinum Spores In Meat, Orchid Mettanant
The Relative Roles Of Initial And Residual Sodium Nitrite On Germination Of Clostridium Botulinum Spores In Meat, Orchid Mettanant
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Four levels of NaNO2 (0 ppm, 50 ppm, 100 ppm, and 156 ppm) were tested for antibotulinal activity in ground pork inoculated with spores of Clostridium botulinum either at the time of formulation or after cooking. Samples formulated with less than 156 ppm sodium nitrite received additional nitrite to adjust the residual nitrite equal to that found after cooking in samples formulated with 156 ppm nitrite. All samples were subjected to abusive storage at 27 C. Inoculating the spores at the time of formulation resulted in a faster rate of swelling. Heating C. botulinum spores for 30 min. at …
Protein Bodies In Dormant, Imbibed And Germinated Sunflower Cotyledons, R. D. Allen, H. J. Arnott
Protein Bodies In Dormant, Imbibed And Germinated Sunflower Cotyledons, R. D. Allen, H. J. Arnott
Food Structure
Scanning electron microscopy was used to observe the morphology and structure of protein bodies in dormant and imbibed sunflower cotyledons and to document the morphological changes in protein bodies during germination and seedling growth. In order to clearly visualize dormant seed structure, anhydrous fixation techniques were employed. Definite differences in cellular structure are seen in comparisons of dry and imbibed seed tissues. As germination proceeds, protein bodies lose their smooth spherical shape and become indented and pitted. Protein body coalescence and fusion precedes the formation of a central protein vacuole. As protein is hydrolyzed, protein vacuole density decreases, and its …