Jurnal Kimia (Journal of Chemistry)
Vol. 5, No. 2 Juli 2011

PREDIKSI KADAR FLAVONOID TOTAL TEMPUYUNG (Sonchus arvensis L.) MENGGUNAKAN KOMBINASI SPEKTROSKOPI IR DENGAN REGRESI KUADRAT TERKECIL PARSIAL

E. Rohaeti (Unknown)
R. Heryanto (Unknown)
M. Rafi (Unknown)
A. Wahyuningrum (Unknown)
L. K. Darusman (Unknown)



Article Info

Publish Date
14 Nov 2012

Abstract

The potency of Fourier transformed infrared spectroscopy (FTIR) combined with chemometric method for determining the total flavonoid content of tempuyung (Sonchus arvensis L) has been investigated. Partial least squares regression (PLSR) was used to build a prediction model based on the relationship between concentration of total flavonoids obtained from the reference method (AlCl3) and FTIR spectrum. Application of PLSR in the determination of total flavonoids content in tempuyung gave moderate value for goodness of fit of the model with r calibration = 0974, r validation = 0742, Standard Error Calibration = 0023, Root Mean Square Error Calibration = 0023, Standard Error Prediction = 0078, Root Mean Square Prediction Error = 0076, and bias = -0001 using FTIR derivative spectrum segment 1. From these results, combination of FTIR spectrum and PLSR can be used for the prediction of total flavonoids content in tempuyung.

Copyrights © 2011






Journal Info

Abbrev

jchem

Publisher

Subject

Chemistry

Description

Jurnal Kimia (Journal of Chemistry) publishes papers on all aspects of fundamental and applied chemistry. The journal is naturally broad in scope, welcomes submissions from across a range of disciplines, and reports both theoretical and experimental ...