Near infrared determination of the content of caffeine in tea polyphenol

	Near infrared determination of the content of caffeine in tea polyphenol
其他题名	论文其他题名
	Lu Y. J.; Chen H. C.; Lu J.; Chen X. D.
	2005
发表期刊	Spectroscopy and Spectral Analysis
ISSN	1000-0593
卷号	25 期号:8 页码:1243-1245
摘要	In the present paper the caffeine in the tea polyphenol was analysed spectrally and quantitatively by using near infrared spectroscopy. From the original absorbance of caffeine in the tea polyphenol an obvious and strong peak can be viewed. By using second derivative, MSC(multiple scatter correction) and correlation analysis the spectral characteristics of caffeine in the near infrared region can be seen very clearly, thus the robust calibration model can be set up easily. The result obtained shows that through this technique the absorptive characteristic of those primary fundamentals of caffeine can be looked through easily, meanwhile, calibration test was performed to quantitatively measure the weight percent of caffeine in the tea polyphenol, and fine precision of the result was obtained in a comparatively very large range of concentration. The SEC(standard error of calibration) is 0. 49 %, and the correlation coefficient r is 0. 993. The result shows that NIR is feasible and superior in analyzing the content of caffeine in tea polyphenol.
收录类别	SCI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/25763
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Lu Y. J.,Chen H. C.,Lu J.,et al. Near infrared determination of the content of caffeine in tea polyphenol[J]. Spectroscopy and Spectral Analysis,2005,25(8):1243-1245.
APA	Lu Y. J.,Chen H. C.,Lu J.,&Chen X. D..(2005).Near infrared determination of the content of caffeine in tea polyphenol.Spectroscopy and Spectral Analysis,25(8),1243-1245.
MLA	Lu Y. J.,et al."Near infrared determination of the content of caffeine in tea polyphenol".Spectroscopy and Spectral Analysis 25.8(2005):1243-1245.

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