Prediction of the chemical composition of mutton with near infrared reflectance spectroscopy
| dc.contributor.author | Viljoen M. | |
| dc.contributor.author | Hoffman L.C. | |
| dc.contributor.author | Brand T.S. | |
| dc.date.accessioned | 2011-05-15T16:00:29Z | |
| dc.date.available | 2011-05-15T16:00:29Z | |
| dc.date.issued | 2007 | |
| dc.description.abstract | Near infrared reflectance spectroscopy (NIRS) was evaluated as a tool to predict the chemical composition of freeze-dried mutton. Samples used for the ash, dry matter (DM), crude protein (CP) and fat calibrations consisted of M. longissimus dorsi (eye muscle) from 19-month-old Merino sheep, while mineral calibrations were developed with M. semimembranosus from Merino crossbreed lambs slaughtered at a live weight of 40 kg. Samples were minced, freeze-dried and analysed according to standard laboratory procedures. Samples were scanned (1100-2500 nm) and partial least-squares regression (PLSR) was used to predict the chemical and mineral composition. Multiple correlation coefficients (r) and standard error of performance (SEP) for chemical composition constituents were: ash (0.97; 0.15%), DM (0.96; 0.38%), CP (1.00; 0.92%) and fat (1.00; 0.43%), respectively. K, P, Na, Mg, Fe and Zn showed acceptable SEP values of 600, 900, 77.89, 40, 3.15 and 3.59 mg/kg, respectively. The r values ranged from 0.86 for Zn and K to 0.92 for Mg. Very low r values (0.26-0.49) were obtained for Cu, B, Mn, Ca and Al. It was concluded that NIRS could be used as a rapid tool for predicting proximate chemical composition and certain minerals in freeze-dried mutton. © 2006 Elsevier B.V. All rights reserved. | |
| dc.description.version | Article | |
| dc.identifier.citation | Small Ruminant Research | |
| dc.identifier.citation | 69 | |
| dc.identifier.citation | 03-Jan | |
| dc.identifier.issn | 9214488 | |
| dc.identifier.other | 10.1016/j.smallrumres.2005.12.019 | |
| dc.identifier.uri | http://hdl.handle.net/10019.1/11720 | |
| dc.subject | Ovis aries | |
| dc.title | Prediction of the chemical composition of mutton with near infrared reflectance spectroscopy | |
| dc.type | Article |