Determination of free amino acids in Shaanxi glutinous rice wine with ninhydrin post-column derivatization

2011 ◽  
Author(s):  
He Xiaoxian ◽  
Yu Zehong ◽  
Chang Haishan
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Rice Wine ◽  
Glutinous Rice

scholarly journals A METHOD FOR THE DETERMINATION OF FREE AMINO ACIDS IN RAT ORGANS AND TISSUES

1950 ◽  
Vol 182 (1) ◽  
pp. 29-37
Author(s):  
P.E. Schurr ◽  
H.T. Thompson ◽  
L.M. Henderson ◽  
C.A. Elvehjem
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Rat Organs

Automated Determination of Free Amino Groups in Serum and Plasma Using 2,4,6-Trinitrobenzene Sulfonate

1969 ◽  
Vol 15 (9) ◽  
pp. 891-901 ◽  
Author(s):  
D W Palmer ◽  
T Peters
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Clinical Applications ◽  
Amino Groups ◽  
Automated Method ◽  
Total Free Amino Acids ◽  
Colored Complexes ◽  
Automated Determination

Abstract A simple automated method is described for determining the level of total free amino acids in the blood. The method utilizes the AutoAnalyzer, and is based on the formation of colored complexes by uniting free amino groups with 2,4,6-trinitrobenzene sulfonate (TNBS). Proteins do not interfere because the free amino acids are first separated by dialysis. Characteristics of the reaction and potential clinical applications of the procedure are discussed.

Determination of selected amino acids in milk using dispersive liquid–liquid microextraction and GC-MS

2019 ◽  
Vol 11 (28) ◽  
pp. 3538-3545 ◽  
Author(s):  
Andrew Quigley ◽  
Damian Connolly ◽  
Wayne Cummins
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Ethyl Chloroformate ◽  
Milk Products ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

An ethyl chloroformate derivatisation followed by dispersive liquid–liquid microextraction (DLLME) method, combined with GC-MS was developed for the analysis of free amino acids in various milk products.

A study on the degradation of arachin by proteolytic enzymes

1973 ◽  
Vol 51 (11) ◽  
pp. 2217-2222 ◽  
Author(s):  
R. B. van Huystee
Keyword(s):  
Amino Acids ◽  
Proteolytic Activity ◽  
Free Amino Acids ◽  
Free Amino ◽  
Proteolytic Enzymes ◽  
Disc Electrophoresis ◽  
Polyacrylamide Gels ◽  
Macromolecular Protein

The prime purpose of this proteolysis study was to direct attention to alternate means of measuring proteolytic activity other than the determination of free amino acids. The release of peptides from a macromolecular protein during incubation with either papain, pronase, or trypsin was determined by measuring the presence of 280-nm-absorbing molecules in the fractionation range of Sephadex G 25 eluant after incubation. The formation of larger proteinaceous constituents by proteolysis of arachin was analyzed by disc electrophoresis on polyacrylamide gels. Using these techniques it was noted that papain was the most efficient proteolytic agent for the degradation of arachin.

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