Reyes Tristan M, Wagoner Madison P, Zorn Virginia E, Coursen Madison M, Wilborn Barney S, Bonner Tom, Brandebourg Terry D, Rodning Soren P, Sawyer Jason T
Department of Animal Sciences, Auburn University, Auburn, AL 36849, USA.
Winpak Ltd., 100 Saulteaux Crescent, Winnipeg, MB R3J 3T3, Canada.
Foods. 2022 Feb 11;11(4):520. doi: 10.3390/foods11040520.
Packaging technology is evolving, and the objectives of this study were to evaluate instrumental surface color, expert color evaluation, and lipid oxidation (TBARS) on beef steaks packaged in vacuum-ready packaging (VRF) or polyvinyl chloride (PVC) overwrap packaging. Paired strip loins (Institutional Meat Purchasing Specifications # 180) were cut into 2.54-cm-thick steaks and assigned randomly to one of two packaging treatments, VRF or PVC. Steaks packaged in VRF were lighter in color ( < 0.05) as the display period increased, whereas steaks packaged in PVC became darker ( < 0.05). Redness (a*) values were greater ( < 0.05) for PVC steaks until day 5, whereas VRF steaks had a greater ( < 0.05) surface redness from day 10 to 35 of the display period. Calculated spectral values of red to brown were greater ( < 0.05) for steaks in VRF than PVC. In addition, expert color evaluators confirmed VRF steaks were less brown and less discolored ( < 0.05) from day 5 to 35 of the display. Nonetheless, lipid oxidation was greater ( < 0.05) for PVC steaks from day 10 through day 35 of the display. Results from this study suggest that the use of vacuum packaging for beef steaks is plausible for maintaining surface color characteristics during extended display periods.
包装技术在不断发展，本研究的目的是评估真空预包装（VRF）或聚氯乙烯（PVC）外包装包装的牛排的仪器表面颜色、专家颜色评估和脂质氧化（硫代巴比妥酸反应物，TBARS）情况。将成对的腰大肌（符合机构肉类采购规格#180）切成2.54厘米厚的牛排，并随机分配到两种包装处理之一，即VRF或PVC。随着展示期的延长，采用VRF包装的牛排颜色变浅（P<0.05），而采用PVC包装的牛排颜色变深（P<0.05）。直到第5天，PVC包装的牛排的红色度（a*值）更高（P<0.05），而在展示期的第10天到35天，VRF包装的牛排表面红色度更高（P<0.05）。计算得出的VRF包装牛排的红棕色光谱值高于PVC包装牛排（P<0.05）。此外，专家颜色评估人员确认，在展示期的第5天到35天，VRF包装的牛排棕色更浅，变色更少（P<0.05）。尽管如此，在展示期的第10天到35天，PVC包装的牛排的脂质氧化程度更高（P<0.05）。本研究结果表明，对牛排采用真空包装在延长展示期内保持表面颜色特征是可行的。
