Effect of Acidity of a Medium on Riboflavin Photodestruction


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Abstract

Effect of acidity of a medium on the spectroscopic characteristics of riboflavin aqueous solutions is investigated by the method of fluorescent and absorption spectroscopy. Significant deformation of the electronic spectra of riboflavin aqueous solutions irradiated with unfiltered light of a PRK-2 lamp is observed. It is established that riboflavin photostability in an acid medium is about twice as much as the photostability in a neutral medium, which is caused by the formation of a protonated species.

About the authors

S. Kh. Astanov

Bukhara Engineering Technological Institute

Author for correspondence.
Email: s.h.ostonov@rambler.ru
Uzbekistan, Bukhara

M. Turdiev

Bukhara Engineering Technological Institute

Email: s.h.ostonov@rambler.ru
Uzbekistan, Bukhara

M. Z. Sharipov

Bukhara Engineering Technological Institute

Email: s.h.ostonov@rambler.ru
Uzbekistan, Bukhara

É. N. Kurtaliev

Samarkand State University Named after Alisher Navoi

Email: s.h.ostonov@rambler.ru
Uzbekistan, Samarkand

N. N. Nizomov

Samarkand State University Named after Alisher Navoi

Email: s.h.ostonov@rambler.ru
Uzbekistan, Samarkand

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