Precipitation of αl-glutamic acid: determination of growth kinetics

2007 ◽  
Vol 136 ◽  
pp. 247 ◽  
Author(s):  
Jochen Schöll ◽  
Christian Lindenberg ◽  
Lars Vicum ◽  
Jörg Brozio ◽  
Marco Mazzotti
Keyword(s):  
Glutamic Acid ◽  
Growth Kinetics ◽  
Acid Determination

Precipitation of L-Glutamic Acid: Determination of Nucleation Kinetics

2006 ◽  
Vol 29 (2) ◽  
pp. 257-264 ◽  
Author(s):  
J. Schöll ◽  
L. Vicum ◽  
M. Müller ◽  
M. Mazzotti
Keyword(s):  
Glutamic Acid ◽  
Nucleation Kinetics ◽  
Acid Determination

Improved Cleanup and Derivatization for Gas Chromatographic Determination of Monosodium Glutamate in Foods

1983 ◽  
Vol 66 (6) ◽  
pp. 1528-1531 ◽  
Author(s):  
Hiroshi Nakanishi
Keyword(s):  
Glutamic Acid ◽  
Acid Derivative ◽  
Monosodium Glutamate ◽  
Chromatographic Determination ◽  
Flame Ionization Detection ◽  
Gas Chromatograph ◽  
Flame Ionization ◽  
Acetone Water ◽  
Chromatographic Procedure

Abstract A gas chromatographic procedure is described for determining monosodium glutamate (MSG) in several types of food. A sample is extracted with acetone- water (1 + 1). Acetone is evaporated and an aliquot of the extract is buffered with 1M NH4OH-1M NH4CI pH 9 solution, and chromatographed directly on a column of QAE Sephadex A-25 that has been pretreated with the same buffer. MSG is eluted with 0.1N HC1, and a portion of the eluate is evaporated to dryness and reacted with dimethylformamide( DMF)-dimethylacetal to form the glutamic acid derivative, which is injected into a gas chromatograph and measured by flame ionization detection. Recoveries of MSG from sample fortified at 5-500 mg ranged from 92.8 to 100%.

scholarly journals Determination of free amino acids in plants by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS)

2015 ◽  
Vol 7 (18) ◽  
pp. 7574-7581 ◽  
Author(s):  
Magdalena M. Dziągwa-Becker ◽  
Jose M. Marin Ramos ◽  
Jakub K. Topolski ◽  
Wiesław A. Oleszek
Keyword(s):  
Mass Spectrometry ◽  
Amino Acids ◽  
Liquid Chromatography ◽  
Amino Acid ◽  
Tandem Mass Spectrometry ◽  
Free Amino ◽  
Tandem Mass ◽  
Amino Acid Determination ◽  
Acid Determination

Free amino acid determination in plants by LC-MS/MS.

scholarly journals THE DETERMINATION OF d(-)- AND l(+)-GLUTAMIC ACID IN PROTEIN HYDROLYSATES

1947 ◽  
Vol 168 (1) ◽  
pp. 43-49 ◽  
Author(s):  
Max S. Dunn ◽  
Merrill N. Camien ◽  
Camien S. Shankman ◽  
Harriette Block
Keyword(s):  
Glutamic Acid ◽  
Protein Hydrolysates

scholarly journals Simultaneous determination of nucleation and crystal growth kinetics of struvite using a thermodynamic modeling approach

2013 ◽  
Vol 215-216 ◽  
pp. 903-912 ◽  
Author(s):  
Mary Hanhoun ◽  
Ludovic Montastruc ◽  
Catherine Azzaro-Pantel ◽  
Béatrice Biscans ◽  
Michèle Frèche ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Simultaneous Determination ◽  
Thermodynamic Modeling ◽  
Growth Kinetics ◽  
Modeling Approach ◽  
Crystal Growth Kinetics ◽  
Kinetics Of

scholarly journals Determination of 3,4,5-Trihydroxybenzoic Acid Exploiting a Visible-Light-Driven Photoelectrochemical Platform: Application in Wine and Tea Samples

2022 ◽  
Author(s):  
Kayni Lima ◽  
Ridvan Fernandes ◽  
Clenilton dos Santos ◽  
Flavio Damos ◽  
Rita de Cássia Luz
Keyword(s):  
Light Emitting Diode ◽  
Glass Slide ◽  
Experimental Conditions ◽  
Amperometric Determination ◽  
Light Emitting ◽  
Promising Tool ◽  
Visible Light Driven ◽  
Photoelectrochemical Method ◽  
Acid Determination

The present work is based on the development and application of a photoelectrochemical method for the amperometric determination of 3,4,5-trihydroxybenzoic acid in different samples. The method is based on the use of a photoelectrochemical platform based on a glass slide coated with fluorine-doped tin oxide, which has been modified with cadmium sulfide and poly(D-glucosamine) and subjected to a light-emitting diode (LED) lamp. The photoelectrochemical platform was sensitive to the increase of the concentration of the antioxidant 3,4,5-trihydroxybenzoic acid in the solution. Under the optimized experimental conditions, the photoelectrochemical method presented a linear response for a 3,4,5-trihydroxybenzoic acid concentration ranging from 0.2 up to 500 μmol L-1. The method was applied to 3,4,5-trihydroxybenzoic acid determination in samples of wines and teas with recoveries between 95.88 and 101.72%. The results obtained suggest that the developed platform is a promising tool for quantifying the 3,4,5-trihydroxybenzoic acid.

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