Examining the relationship between colorimetric measurements and microbial loading of beef meat

Cassius Coombs, Benjamin Holman, Damian Collins, Michael Friend, David Hopkins

    Research output: Other contribution to conferenceAbstractpeer-review

    Abstract

    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.
    Original languageEnglish
    Pages206-207
    Number of pages2
    Publication statusPublished - 2016
    Event31st Biennial Conference of the Australian Society of Animal Production: Animal Production 2016 - Stamford Grand Adelaide, Glenelg, Australia
    Duration: 04 Jul 201607 Jul 2016
    https://www.publish.csiro.au/an/content/ResearchFronts?id=2882 (Invited published papers in Animal Production Science)

    Conference

    Conference31st Biennial Conference of the Australian Society of Animal Production
    Country/TerritoryAustralia
    CityGlenelg
    Period04/07/1607/07/16
    Internet address

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