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Evaluation of goose down and duck’s down’s content by NIR method

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2007 ASAE Annual Meeting  073063.(doi:10.13031/2013.23181)
Authors:   Ying Zhou, Huirong Xu, Yibing Ying, Xiaoying Niu
Keywords:   NIR, goose down, duck down, PCA, DPLS

Down products have large market share, especially in China, but it’s hard to distinguish goose down and duck down by visual appraisal. The traditional method is using microscope to attain the goal. But there are some problems such as limited samples and low accuracy. The objective of this study was to discriminate goose down and duck down with different pureness using Fourier transform (FT) near infrared (NIR) spectroscopy. In this study, 4 groups of goose down and duck down with different proportion were prepared. Group 1 and group 2 are made up of pure goose down and pure duck down, separately. Group 3 is made up of 1/3 goose down and 2/3 duck down, and group 4 is made up of 2/3 goose down and 1/3 duck down. NIR instrument was used to scan every sample in order to acquire spectrum. This research was based on the hardware of NEXUS intelligent FT-IR spectrometer, with using fiber optic diffuse reflectance accessory. Spectrum of each sample was acquired using diffuse reflectance mode. Chemometrics methods including PCA and DPLS were used to analyse the spectrum attained. Various pre-treatment of experimental data such as MSC and derivative were also used to make better model. The result shows that NIR is a fast and effective method to discriminate between goose down and duck down even in mixture.

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