Ageing-freezing/thaw process affects blooming time and myoglobin forms of lamb meat during retail display

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Abstract

Loins from fifty-six lambs were allocated to 2 ageing times (6 and 12 days post mortem) and a Frozen treatment (6 days of ageing followed by freeze/thaw process). Instrumental colour parameters, chroma, hue angle, 630/580 and myoglobin isoforms were assessed repeatedly every 5 min during the first 40 min and every 10 min from 40 to 120 min after surface cutting. Colour stability was measured instrumentally during 4 consecutive days of simulated retail display. L* values were lower for Frozen treatment compared to meat aged for 6 and 12 days. Redness increased at a lower rate for Frozen treatment compared to samples aged for 6 days up to the breakpoint and took a longer time to stabilize. Meat subjected to the ageing-freezing/thaw process required a longer time to reach a fully bloomed status than meat aged up to 12 days post mortem. The ageing-freezing/thaw process improved the redness of lamb meat displayed for 4 days in cold storage.

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Alvarenga, T. I. R. C., Hopkins, D. L., Ramos, E. M., Almeida, A. K., & Geesink, G. (2019). Ageing-freezing/thaw process affects blooming time and myoglobin forms of lamb meat during retail display. Meat Science, 153, 19–25. https://doi.org/10.1016/j.meatsci.2019.02.016

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