Abstract
Electrical stimulation speeds the rate of pH decline in beef muscle. A study was conducted to evaluate an electrical stimulation (ES) method for beef sides and its effect on pH decline compared to non-stimulated control counterparts using nonlinear modeling. The pH of each carcass in the study was measured at selected times over a 24-hour time period postmortem. A statistical methodology is described for comparing two treatments based on the mean pH decline over time. The repeated measures structure of the data is incorporated into the statistical procedure. A nonlinear exponential decay model is used to characterize the mean pH decline. Various comparisons of the mean response to treatment are made based on the nonlinear model.
Keywords
Linear models; Non-linear models; Repeated measures analysis
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Recommended Citation
Schwenke, James R. and Kastner, Curtis L.
(1989).
"NONLINEAR MODELING OF pH DECLINE IN BEEF CARCASSES,"
Conference on Applied Statistics in Agriculture.
https://doi.org/10.4148/2475-7772.1448
NONLINEAR MODELING OF pH DECLINE IN BEEF CARCASSES
Electrical stimulation speeds the rate of pH decline in beef muscle. A study was conducted to evaluate an electrical stimulation (ES) method for beef sides and its effect on pH decline compared to non-stimulated control counterparts using nonlinear modeling. The pH of each carcass in the study was measured at selected times over a 24-hour time period postmortem. A statistical methodology is described for comparing two treatments based on the mean pH decline over time. The repeated measures structure of the data is incorporated into the statistical procedure. A nonlinear exponential decay model is used to characterize the mean pH decline. Various comparisons of the mean response to treatment are made based on the nonlinear model.
