Rapid analysis of amino acids in Japanese green tea by microchip electrophoresis using plastic microchip and fluorescence detection

2003 ◽  
Vol 1013 (1-2) ◽  
pp. 183-189 ◽  
Author(s):  
Masaru Kato ◽  
Yukari Gyoten ◽  
Kumiko Sakai-Kato ◽  
Toshimasa Toyo’oka
Keyword(s):  
Amino Acids ◽  
Green Tea ◽  
Fluorescence Detection ◽  
Microchip Electrophoresis ◽  
Rapid Analysis

Rapid analysis of N-phenylpropenoyl-L-amino acids (NPA) from cocoa by UPLC and CE

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
M Lechtenberg ◽  
K Henschel ◽  
U Liefländer-Wulf ◽  
B Quandt ◽  
A Hensel
Keyword(s):  
Amino Acids ◽  
Rapid Analysis

Measurement of the Ratio of Tea Polyphenols to Amino Acids in Green Tea Infusion Based on near Infrared Spectroscopy

2011 ◽  
Vol 301-303 ◽  
pp. 1093-1097 ◽  
Author(s):  
Shi Rong Ai ◽  
Rui Mei Wu ◽  
Lin Yuan Yan ◽  
Yan Hong Wu
Keyword(s):  
Amino Acids ◽  
Infrared Spectroscopy ◽  
Correlation Coefficient ◽  
Green Tea ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Nir Spectroscopy ◽  
Tea Polyphenols ◽  
Strong Absorption ◽  
Tea Infusion

This study attempted the feasibility to determine the ratio of tea polyphenols to amino acids in green tea infusion using near infrared (NIR) spectroscopy combined with synergy interval PLS (siPLS) algorithms. First, SNV was used to preprocess the original spectra of tea infusion; then, siPLS was used to select the efficient spectra regions from the preprocessed spectra. Experimental results showed that the spectra regions [7 8 18] were selected, which were out of the strong absorption of H2O. The optimal PLS model was developed with the selected regions when 6 PCs components were contained. The RMSEP value was equal to 0.316 and the correlation coefficient (R) was equal to 0.8727 in prediction set. The results demonstrated that NIR can be successfully used to determinate the ration of tea polyphenols to amino acids in green tea infusion.

Analysis of plasma amino acids by HPLC with photodiode array and fluorescence detection

2005 ◽  
Vol 354 (1-2) ◽  
pp. 83-90 ◽  
Author(s):  
Elisabeth L. Schwarz ◽  
William L. Roberts ◽  
Marzia Pasquali
Keyword(s):  
Amino Acids ◽  
Fluorescence Detection ◽  
Plasma Amino Acids ◽  
Photodiode Array

RP-LC with Fluorescence Detection of Amino Acids in Rat Brain Synaptosomes

2011 ◽  
Vol 73 (1-2) ◽  
pp. 157-163 ◽  
Author(s):  
Xiaoyuan Mao ◽  
Yonggang Cao ◽  
Dongyu Min ◽  
Feng Guo ◽  
Ni Xie ◽  
...  
Keyword(s):  
Amino Acids ◽  
Rat Brain ◽  
Fluorescence Detection ◽  
Rat Brain Synaptosomes ◽  
Brain Synaptosomes
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