Development of lard detection in crude palm oil (Cpo) using ftir combined with chemometrics analysis

Abstract

Objective: The aim of this research to detect lard in crude palm oil (CPO) using FTIR spectroscopy combined with partials least square (PLS). Methods: Development of analysis method of lard in CPO using FTIR combined with PLS to quantification of lard in CPO. Data processing in this study is looking for correlation about actual value and FTIR predicted value. The good correlation will give the higher coefficient of determination (R2value), and lowest of root mean square error calibration (RMSEC), and root means square error cross validation (RMSECV). Results: The results showed that the analysis method using FTIR spectroscopy to detect lard in a combination of the fingerprint spectrum at wave number 1481-999 cm-1with wave number 1749-1650 cm-1. This research resulted good correlation about actual value and predicted value at combination of wave number 1481.22-999.05 and 1793.67-1650.95 with R2value is 0.998. The detection error is lowest because it has a smaller of RMSEC and RMSECV value with 1.291% (v/v), 0.838% (v/v) respectively. Conclusion: The characteristic of lard in CPO can be detected using FTIR spectroscopy combined with PLS at wave number 1481.22-999.05 and 1793.67-1650.95 with R2value is 0.998 and RMSEC, RMSECV value with 1.291% (v/v), 0.838% (v/v) respectively.