Rapid Quantification of Vitamin C in Navel Oranges by Near-Infrared Diffuse Reflectance Spectroscopy

Abstract

In this paper, NIR diffuse reflectance spectroscopy as well as the PLS method was adopted for rapid determination of vitamin C in navel oranges. The GN method was employed to select calibration and validation samples. The spectral data in the region 900-1600nm were used for modeling. The coefficient of determination of the validation set is 0.8690, and RMSECV is 1.039mg/100g. The results suggest that NIR diffuse reflectance spectroscopy may serve as a strong tool for developing an on-line fruit sorting system.

Development of Detection System with Low Predictive Errors for Determining Vitamin C Content of Indian Jujube

“…For example, Yang et al [12] used a PLS model to determine vitamin C content based on Fourier transform near-infrared (FT-NIR) and FT-Raman spectra. Liao [13] used PLS regression to construct a model for quantifying the vitamin C content of navel oranges via NIR diffuse reflectance spectroscopy. In addition, Qing et al [14] and Zude et al [15] used PLS models to calculate fruit soluble solid content (SSC) and fruit flesh firmness.…”