This study aimed to evaluate the relationship between instrumental colour measurements of m. longissimus lumborum (LL) beef steaks and microbial profile. A total of 128 LL were used in this study, kept under simulated retail display and measured for colorimetrics (L*, a*, b*) and the ratio of absorbance at 630 nm and 580 nm (R630/580) at 1 day intervals over 3 day display periods (0, 1, 2 and 3 days). LL samples were taken at the commencement of the display period (day 0) and analysed for lactic acid bacteria (LAB) and Enterobacteriaceae (ENT) loading. LAB was significantly correlated to all colorimetric measures – with the exception of L*. The strength of these correlations generally increased with display period. Only ΔE (the change in colorimetric measures over the display period) was correlated with ENT. Insufficient loading of other microbial types limited further comparisons. These results suggest that colorimetrics may have potential for monitoring beef microbial content, although the strengths of these correlations severely restrict its practical adoption. Thus, the basis of these correlations and their robustness should be further explored.
|Number of pages||2|
|Publication status||Published - 2016|
|Event||31st Biennial Conference of the Australian Society of Animal Production: Animal Production 2016 - Stamford Grand Adelaide, Glenelg, Australia|
Duration: 04 Jul 2016 → 07 Jul 2016
https://www.publish.csiro.au/an/content/ResearchFronts?id=2882 (Invited published papers in Animal Production Science)
|Conference||31st Biennial Conference of the Australian Society of Animal Production|
|Period||04/07/16 → 07/07/16|