کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2449706 | 1554092 | 2015 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Differential abundance of sarcoplasmic proteome explains animal effect on beef Longissimus lumborum color stability Differential abundance of sarcoplasmic proteome explains animal effect on beef Longissimus lumborum color stability](/preview/png/2449706.png)
• Proteome basis of animal-to-animal variation in beef color stability was examined.
• Glycolytic enzymes were over-abundant in color-stable Longissimus lumborum steaks.
• Three glycolytic enzymes were positively correlated to redness and color stability.
• Differences in sarcoplasmic proteome contribute to beef color stability variations.
The sarcoplasmic proteome of beef Longissimus lumborum demonstrating animal-to-animal variation in color stability was examined to correlate proteome profile with color. Longissimus lumborum (36 h post-mortem) muscles were obtained from 73 beef carcasses, aged for 13 days, and fabricated to 2.5-cm steaks. One steak was allotted to retail display, and another was immediately vacuum packaged and frozen at − 80 °C. Aerobically packaged steaks were stored under display, and color was evaluated on days 0 and 11. The steaks were ranked based on redness and color stability on day 11, and ten color-stable and ten color-labile carcasses were identified. Sarcoplasmic proteome of frozen steaks from the selected carcasses was analyzed. Nine proteins were differentially abundant in color-stable and color-labile steaks. Three glycolytic enzymes (phosphoglucomutase-1, glyceraldehyde-3-phosphate dehydrogenase, and pyruvate kinase M2) were over-abundant in color-stable steaks and positively correlated (P < 0.05) to redness and color stability. These results indicated that animal variations in proteome contribute to differences in beef color.
Journal: Meat Science - Volume 102, April 2015, Pages 90–98