Amino acid contents in raw materials can be precisely analyzed in a global network of near-infrared spectrometers:: Collaborative trials prove the positive effects of instrument standardization and repeatability files

被引：11

作者：

Fontaine, J ^{[1
]}

Hörr, J ^{[1
]}

Schirmer, B ^{[1
]}

机构：

[1] Degussa AG, Feed Addit, Appl Technol, D-63403 Hanau, Germany

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2004年 / 52卷 / 04期

关键词：

collaborative trial; ring test; standardization of NIR spectrometer; repeatability file; NIRS calibration; check cell; WinISI; master NIRS; host NIRS; precision; reproducibility; amino acids; crude protein; methionine; cystine; lysine; threonine; tryptophan;

D O I：

10.1021/jf030555o

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

Four international ring trials for NIRS amino acid analysis of feed raw materials have demonstrated for the first time that the calibrations developed by Degussa allow reliable and precise predictions of essential amino acids in up to 44 NIR spectrometers. Different standardization techniques were compared, and the effectiveness of using spectra of the host instruments as repeatability files was studied. The ultimately achieved reproducibility of 2-3% CV for almost all analyses in the network is considerably better than ring trial results for wet chemical amino acid analysis.

引用

页码：701 / 708

页数：8

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