Yield and Shear Values of Pectoralis Superficialis after Tumbling in Various Solutions

Effects of breast piece weight (thickness) on yield after tumbling in water and aqueous solutions of acetic acid, NaCl, and soybean oil for 10 and 20 min were determined. Thickness of the piece had no affect on yield when the samples were tumbled in water but addition of acetic acid, NaCl, or oil to the tumbling solution resulted in significant (P<.05) correlations in many cases. Increased sample thickness resulted in smaller cooking loss in those samples tumbled in 10% acetic acid, .5 and 1% NaCl, or 5 and 10% soybean oil. This resulted in improved net yield as sample weight increased. Addition of NaCl (.5 or 1.0%), acetic acid (5 or 10%), or soybean oil (5 or 10%) to the tumbling solution did not affect peak values but addition of 5 or 10% soybean oil reduced shear values in the samples after 10 min tumbling. Oil in the solution had no affect after tumbling for 20 min. Increasing the tumbling time from 10 to 20 min produced lower peak values and shear values in samples tumbled in water, NaCl, and oil. Combination of .5% NaCl, 5% acetic acid, and 5% soybean oil to produce various tumbling solutions resulted in no changes in peak values or shear values and when tumbling time was increased from 10 to 20 min, shear parameters were not reduced. Net yield was higher when samples were tumbled in solutions containing acetic acid. Increasing tumbling time from 10 to 20 min also increased net yield in these samples.