Abstract
The feasibility of using a compact, economical NIR instrument to predict moisture content (MC) and total fat content (TFC) in minced pork was demonstrated. The instrument was evaluated using two different interactance geometries of the measuring head. Results were compared with those from the NIRS6500, which is commonly used as a standard NIR research instrument. Minced pork samples were prepared from loin, ham, bacon and shank muscles. PLS calibration indicated that using spectra from the short wavelength region from 700 nm to 1050 nm provided similar results between instruments. The standard error of cross validation (SECV) for MC and TFC were 2.4 % W/W and 2.5% W/W dry weight. The ratio of the standard deviation of the reference data to the standard error of cross validation (RPD) was 3.8 for MC and 4.3 for TFC, indicating that the compact NIR instrument is suitable for screening applications. NIR instruments are routinely used in the food industry to determine quality characteristics such as MC and TFC. However, the equipment is typically expensive. This research demonstrates that compact, economical NIR instruments have the potential for alleviating the issue.
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