Antioxidative Activity of Lysine/13-Hydroperoxy-9(Z),11(E)-octadecadienoic Acid Reaction Products

1996 ◽  
Vol 44 (12) ◽  
pp. 3946-3949 ◽  
Author(s):  
Ishtiaque Ahmad ◽  
Manuel Alaiz ◽  
Rosario Zamora ◽  
Francisco J. Hidalgo
Keyword(s):  
Antioxidative Activity ◽  
Octadecadienoic Acid ◽  
Reaction Products ◽  
Acid Reaction

Effect of Oxidized Lipid/Amino Acid Reaction Products on the Antioxidative Activity of Common Antioxidants

1998 ◽  
Vol 46 (9) ◽  
pp. 3768-3771 ◽  
Author(s):  
Ishtiaque Ahmad ◽  
Manuel Alaiz ◽  
Rosario Zamora ◽  
Francisco J. Hidalgo
Keyword(s):  
Amino Acid ◽  
Antioxidative Activity ◽  
Reaction Products ◽  
Acid Reaction

Interactions ofStreptomyces griseus aminopeptidase with amino acid reaction products and their implications toward a catalytic mechanism

2001 ◽  
Vol 44 (4) ◽  
pp. 490-504 ◽  
Author(s):  
R. Gilboa ◽  
A. Spungin-Bialik ◽  
G. Wohlfahrt ◽  
D. Schomburg ◽  
S. Blumberg ◽  
...  
Keyword(s):  
Amino Acid ◽  
Catalytic Mechanism ◽  
Reaction Products ◽  
Acid Reaction

Antimutagenic Effect of Maillard Reaction Products Prepared from Glucose and Tryptophan

1992 ◽  
Vol 55 (8) ◽  
pp. 615-619 ◽  
Author(s):  
GOW-CHIN YEN ◽  
JEN-DAN LII
Keyword(s):  
Maillard Reaction ◽  
Antioxidative Activity ◽  
Reducing Power ◽  
Molar Ratio ◽  
Maillard Reaction Products ◽  
Alkaline Ph ◽  
Reaction Products ◽  
Reaction Conditions ◽  
Antimutagenic Effect ◽  
Effect Of Glucose

The antimutagenicity of Maillard reaction products (MRPs) prepared by refluxing D-glucose and L-tryptophan under various reaction conditions was determined by means of the Ames test. The dose of MRPs with 5 mg per plate showed no toxicity, and mutagenicity to Salmonella typhimurium TA98 and TA100 was used for antimutagenic assay. The mutagenicity of 2-amino-3-methylimidazo (4,5-f) quinoline (IQ) and 2-amino-6-methyldipyrido (1,2-a:3′,2′-d) imidazole (Glu-P-1) toward TA98 was markedly reduced by the addition of glucose-tryptophan MRPs, whereas the mutagenicity of 4-nitroquinoline-N-oxide (NQNO) was not inhibited. The mutagenicity of IQ, Glu-P-1, and NQNO toward TA100 was also markedly reduced by glucose-tryptophan MRPs, but the mutagenicity of NQNO was only slightly inhibited. Greater antimutagenic effects of glucose-tryptophan MRPs were found when these materials were prepared at an alkaline pH. The optimum combinations of reaction conditions for obtaining antimutagenic MRPs to IQ were glucose-tryptophan molar ratio = 0.5:0.25 at pH 9.0 for 5 and 10 h, molar ratio = 0.5:0.5 at pH 11.0 for 10 h, and molar ratio = 1.0:0.25 at pH 7.0 for 15 h and at pH 11.0 for 15 h. The antimutagenic effect of glucose-tryptophan MRPs to IQ and Glu-P-1 was well correlated with their browning intensity, reducing power, and antioxidative activity. The antimutagenicity of glucose-tryptophan MRPs might be due to both desmutagenic and bio-antimutagenic effects.

Effect of β-sitosterol in the antioxidative activity of oxidized lipid–amine reaction products

2009 ◽  
Vol 42 (8) ◽  
pp. 1215-1222 ◽  
Author(s):  
Francisco J. Hidalgo ◽  
M. Mercedes León ◽  
Rosario Zamora
Keyword(s):  
Antioxidative Activity ◽  
Reaction Products

Vibration-spectral studies of compounds formed by the combination of methylformamide and dimethylformamide with some strong acids

1966 ◽  
Vol 19 (11) ◽  
pp. 2091 ◽  
Author(s):  
E Spinner
Keyword(s):  
Hydrochloric Acid ◽  
Sulphuric Acid ◽  
Infrared Spectra ◽  
Spectral Studies ◽  
Ionic Form ◽  
Reaction Products ◽  
Unknown Structure ◽  
Acid Reaction ◽  
Strong Acids

A determination of the infrared spectra of the solid hydrochlorides of methylformamide and dimethylformamide and of the Raman spectra of their aqueous solutions showed that certain spectral features change with the medium used. The infrared spectra of the two amides in concentrated and in aqueous sulphuric acid, and in concentrated hydrochloric acid (HCl and DCl), are consistent with the existence of two amide/acid reaction products for each amide: one (certainly ionic) form predominates in sulphuric acid solutions; a second form, of unknown structure, is present in the solid hydrochlorides, and in hydrochloric acid the two forms coexist in equilibrium.

Antioxidative activity of heterocyclic compounds formed in Maillard reaction products

2002 ◽  
Vol 1245 ◽  
pp. 335-340 ◽  
Author(s):  
Kenichi Yanagimoto ◽  
Kwang-Geun Lee ◽  
Hirotomo Ochi ◽  
Takayuki Shibamoto
Keyword(s):  
Maillard Reaction ◽  
Heterocyclic Compounds ◽  
Antioxidative Activity ◽  
Maillard Reaction Products ◽  
Reaction Products

Antioxidative Activity of (E)-2-Octenal/Amino Acids Reaction Products

1995 ◽  
Vol 43 (3) ◽  
pp. 795-800 ◽  
Author(s):  
Manuel Alaiz ◽  
Rosario Zamora ◽  
Francisco J. Hidalgo
Keyword(s):  
Amino Acids ◽  
Antioxidative Activity ◽  
Reaction Products
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