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Evaluating the performance of a miniaturized NIR spectrophotometer for predicting intramuscular fat in lamb: A comparison with benchtop and hand-held Vis-NIR spectrophotometers

This study compares a miniaturized spectrophotometer to benchtop and hand-held Vis-NIR instruments in the spectral range of 900–1700 nm for prediction of intramuscular fat (IMF) content of freeze-dried ground lamb meat; and their ability to differentiate fresh lamb meat based on animal age (4 vs 12 months). The performance of the miniaturized spectrophotometer was not affected by sample temperature equilibration time. Partial Least Square regression models for IMF showed Rcv2 = 0.86–0.89 and RMSECV = 0.36–0.40 values for all instruments. Day-to-day instrumental variation adversely affected performance of the miniaturized spectrophotometer (R2p = 0.27, RMSEP = 1.28). This negative effect was overcome by representing day-to-day variation in the model. The benchtop spectrophotometer and miniaturized spectrophotometer differentiated lamb meat by animal age. The miniaturized spectrophotometer has potential to be a fast, ultra-compact and cost-effective device for predicting IMF in freeze-dried ground lamb meat and for age classification of fresh lamb meat.

History

Rights statement

© 2020 Elsevier Ltd. All rights reserved.

Publication date

2019-11-28

Project number

  • Non revenue

Language

  • English

Does this contain Māori information or data?

  • No

Publisher

Elsevier

Journal title

Meat Science

ISSN

0309-1740

Citation

Dixit, Y., Pham, H. Q., Realini, C. E., Agnew, M. P., Craigie, C. R., & Reis, M. M. (2020). Evaluating the performance of a miniaturized NIR spectrophotometer for predicting intramuscular fat in lamb: A comparison with benchtop and hand-held Vis-NIR spectrophotometers. Meat Science, 162, 108026. doi:10.1016/j.meatsci.2019.108026

Funder

Ministry of Business Innovation & Employment

Contract number

A23377

Job code

67320

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