Effect of inclusion complex on nitrous acid reaction with flavonoids

2011 ◽  
Vol 81 (1) ◽  
pp. 661-665 ◽  
Author(s):  
Lida Khalafi ◽  
Mohammad Rafiee ◽  
Sajjad Sedaghat
Keyword(s):  
Inclusion Complex ◽  
Nitrous Acid ◽  
Acid Reaction

scholarly journals HISTOCHEMICAL DIFFERENTIATION BETWEEN TYROSINE AND CHLOROGENIC ACID IN PLANT TISSUES I. NITROUS ACID REACTIONS AND METAL CHELATION OF NITROSOTYROSINE

1968 ◽  
Vol 16 (3) ◽  
pp. 191-198 ◽  
Author(s):  
R. M. REEVE
Keyword(s):  
Amino Acids ◽  
Chlorogenic Acid ◽  
Nitrous Acid ◽  
Metal Chelate ◽  
Ultrastructural Localization ◽  
Plant Tissues ◽  
Metal Chelation ◽  
Copper Chelation ◽  
Acid Reaction ◽  
Color Reactions

Copper chelation of nitrosotyrosine has been found useful for histochemical localization for tyrosine in thick, fresh sections of large celled plant tissues. The nitrous acid reaction for ortho-dihydroxyphenolics also has been found useful for localization of chlorogenic acid, caffeic acid and dihydroxyphenylalanine in plant tissues. Application of these tests separately to serially adjacent sections demonstrated the distribution of tyrosine and chlorogenic acid in different plant tissues. Tests tube reactions on known substances verified specificity and also demonstrated that the presence of other amino acids and phenolics did not interfere with the positive test for tyrosine. The color reactions are sufficiently intense for stereoscopic microscopy and tested sections may be measured photometrically. Further adaptability of the nitrosotyrosine-metal chelate reaction to procedures for ultrastructural localization is suggested.

ChemInform Abstract: Kinetic Study of the Phenylurea-Nitrous Acid Reaction: Evidence for an O-Nitrosation Initial Step.

ChemInform ◽  
1988 ◽  
Vol 19 (14) ◽  
Author(s):  
F. MEIJIDE ◽  
J. VAZQUEZ TATO ◽  
J. CASADO ◽  
A. CASTRO ◽  
M. MOSQUERA
Keyword(s):  
Kinetic Study ◽  
Nitrous Acid ◽  
Initial Step ◽  
Acid Reaction

Symmetry of the intermediate in the hydroxylamine-nitrous acid reaction

1983 ◽  
Vol 22 (9) ◽  
pp. 1389-1391 ◽  
Author(s):  
Francis T. Bonner ◽  
John Kada ◽  
Kieran G. Phelan
Keyword(s):  
Nitrous Acid ◽  
Acid Reaction
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