PHOTODYNAMIC ACTIVITY AND CONCEPTS: A DEMONSTRATIVE EXPERIMENT

Quimica nova

Silva, Ana Claudia Pedrozo da¹  Freitas, Camila Fabiano de² 

[1] Universidade Estadual de Maringá, Maringá, Brasil;Universidade Tecnológica Federal do Paraná, Apucarana, Brasil

关键词: photodynamic therapy;    methylene blue;    erythrosine B;    LED;    inactivation of microorganism.;   

DOI  :  10.21577/0100-4042.20170215

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

A simple and low cost experiment is proposed to chemistry students associating the Photodynamic Activity involving Chemical and Biochemical concepts. The inclusion of this experiment in undergraduate courses in Chemistry promotes interdisciplinarity and contextualization, combining current and relevant topics to the teaching of program content. The experiment used the Methylene Blue and Erythrosine B as dyes to demonstrate the photodynamic action of these photosensitizers in the inhibition of microbial growth. Both dyes presented satisfactory results against environmental microorganisms. The growth inhibition was caused exclusively by the photochemical processes undergone by the dye/light/oxygen, with LED light exposure.

【 授权许可】

CC BY