Comparison of Round and Square Cores in the Determination of Beef Tenderness by Warner- Bratzler and Instron

Seven rib-eye rolls, lip on (112A), were each cut into eight 2.54 centimeter thick steaks starting from the blade end. Steaks were randomly assigned to one of four treatment groups; 1) round versus square cores using Instron [inst1], 2) round versus square cores using Warner- Bratzler [inst2], 3) Instron versus Warner-Bratzler using round cores [rdsq1], and 4) Instron versus Warner- Bratzler using square cores [rdsq2]. Subsequently, steaks from each group were broiled in a General Electric industrial broiler grill to an internal temperature of 63 §C. Steaks were held overnight at 2 §C. Two steaks from each rib were placed into each instrument/core treatment group. Steaks were then divided into three sections identified as: a) lateral, b) medial, and c) central. Three 1.27 centimeter cores from each section were taken from each steak for a total of nine cores per steak and sheared once through the center. The results indicated that there was a significant difference ( p> .05) between round and square cores for both Warner- Bratzler and Instron. In all mean groups tested, square cores had higher shear values than did round cores. There was no indication of differences between instruments, and no significant interactions between instruments and core types.

The 1960s: A Bibliography

The time period covered by this bibliography is circa 1960 to 1974, an unusual "decade," to be sure. But because the Civil Rights movements and Watergate framed this era, it became impossible to compile a bibliography on the 1960s without entering the 1970s. The Vietnam War did not end until 1975, which would seem a logical place to end the decade. However, Nixon's resignation sparked more public interest and energy than did the anti-climax of the end of the war. Thus, the time period covered. Although there are some key books on the Civil Rights Movement, which started in the late 1950s, that movement has been adequately covered in other resources.