Publications by authors named "G G Mafi"

The National Beef Quality Audit ()-2022 serves as a benchmark of the current market cow and bull sectors of the U.S. beef industry and allows comparison to previous audits as a method of monitoring industry progress.

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Dysregulated muscle glycogen metabolism preslaughter contributes to aberrant postmortem muscle pH (>5.8) in dark-cutting beef phenotypes. However, the underlying mechanisms have remained elusive.

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: Limited knowledge is currently available on the effects of modified atmospheric packaging (MAP) on the metabolite profiles of cooked beef. The objective was to evaluate the impact of packaging on the cooked color and cooked metabolite profile of normal-pH (normal bright-red color) and atypical-dark-cutting beef (inherently slightly dark-colored) muscle. : Normal-pH (pH 5.

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Article Synopsis
  • Reflectance-based oxygen consumption measurement relies on the conversion of oxymyoglobin to deoxymyoglobin in meat, but this process is influenced by the meat's age and display time, potentially leading to inaccurate results.* -
  • This study aimed to assess how measuring metmyoglobin during oxygen consumption affects the understanding of beef color stability, using two types of muscles: psoas major (less stable color) and longissimus (more stable color).* -
  • Results showed that metmyoglobin levels were higher on the oxygen-exposed surface compared to the interior, especially in the psoas major, suggesting that including metmyoglobin in oxygen consumption assessments can provide a clearer picture of meat color stability.*
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The National Beef Quality Audit - 2022 serves as a benchmark of the current fed steer and heifer population of the U.S. beef industry and allows comparison to previous audits as a method of monitoring industry progress.

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