Thesis (Ph.D)--Baylor University, 2007. / Includes bibliographical references (p. 137-142).

Thesis (M.S.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains vii, 60 p. : ill. Includes abstract. Includes bibliographical references.

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Within the framework of this diploma thesis, the sorptive capability of a lignite as a natural adsorbent was applied on an aqueous solution of pentachlorophenol. The aqueous solution of this substance, which is very dangerous for the environment, was prepared in various concentration ranges according to reached solubility. The solubility is noticed in different literatures variously and then is not applicable. That is why it was necessary to find out the ”real“ solubility. The aqueous solution of pentachlorophenol of given concentration was subsequently put to adsorption with exactly defined quantity of the lignite and as a result the adsorptive isotherms were obtained. These isotherms represent the adsorption capability in dependence on the adsorption duration, quantity of used lignite and concentration of pentachlorophenol solution. By the adsorption with duration longer than one hour, the quantity of adsorbed PCP does not increase markedly.

This diploma thesis is focused on the study of conditions of benzo[a]pyrene, one of the major contaminant of foods, photodegradation under different conditions (solvents with different polarity, light sources, presence of antioxidants). In another part of the thesis, the degradation process of benzo[a]pyrene at various concentrations was studied, in order to characterise the kinetic aspects of photoinduced degradation. The attempt to identify the products of benzo[a]pyrene photodegradation was performed involving methods of gas chromatography and high performance liquid chromatography coupled with mass detectors, as well.

Neste trabalho realizou-se triagem para oxidação de sulfetos a sulfóxidos utilizandose fungos Basidiomicetos, os quais são denominados fungos da podridão branca, uma vez que decompõem a lignina presente na madeira, causando o apodrecimento e em lguns casos, a morte da planta. A triagem foi realizada utilizando-se quatro sulfetos aromáticos (Fig.1) e 6 fungos Basidiomicetos: Pycnoporus sanguineos CCB 501, Trametes versicolor CCB 202, Trametes rigida CCB 285, Trichaptum byssogenum CCB 203, Trametes villosa CCB 291, Irpex lacteus CCB 196. Na Tabela 1 são mostrados alguns resultados obtidos na oxidação com os microrgamsmos: (Ver PDF) Na segunda parte deste trabalho, com a finalidade de aplicar a biocatálise em moléculas mais complexas, realizou-se a síntese de 8 compostos bi-funcionalizados com grupos selênio, sulfeto e carbonila (cetona) (Esquema 1), as quais reagiram quimiosseletivamente frente às enzimas. (Ver PDF) Na última parte deste trabalho foi desenvolvido um novo método de síntese de biciclos [3.2.1] (32) (Esquema 2) (Ver PDF). / In the first part of this dissertation, we reported the screening of Basidiomycetes fungus for the oxidation of the sulfides into sulfoxides. The Basidiomycetes fungs are known as white rot fungus, because promote the degrade of lignin in wood, causing the death of the plant. The screening was reported with four aromatic sulfides (Table I) and six Basidiomycetes fungus: Pycnoporus sanguineos CCB 501, Trametes versicolor CCB 202, Trametes rigida CCB 285, Trichaptum byssogenum CCB 203, Trametes villosa CCB 291, Irpex lacteus CCB 196. Table 1. Oxidation of aromatic sulfides by whole fungal cells. (See PDF) In the second part of this dissertation, we synthesized eight bi-funcionalizated compounds with sulfide, selenide and ketone groups (Scheme 1). Theses compounds were submitted to the action of enzymatic system ofBasidiomycetes fungi. (See PDF) In the last part of this dissertation it is reported a new method for the synthesis of bicycle [3.2.1] (32) (Scheme 2). (See PDF)

Neste trabalho realizou-se triagem para oxidação de sulfetos a sulfóxidos utilizandose fungos Basidiomicetos, os quais são denominados fungos da podridão branca, uma vez que decompõem a lignina presente na madeira, causando o apodrecimento e em lguns casos, a morte da planta. A triagem foi realizada utilizando-se quatro sulfetos aromáticos (Fig.1) e 6 fungos Basidiomicetos: Pycnoporus sanguineos CCB 501, Trametes versicolor CCB 202, Trametes rigida CCB 285, Trichaptum byssogenum CCB 203, Trametes villosa CCB 291, Irpex lacteus CCB 196. Na Tabela 1 são mostrados alguns resultados obtidos na oxidação com os microrgamsmos: (Ver PDF) Na segunda parte deste trabalho, com a finalidade de aplicar a biocatálise em moléculas mais complexas, realizou-se a síntese de 8 compostos bi-funcionalizados com grupos selênio, sulfeto e carbonila (cetona) (Esquema 1), as quais reagiram quimiosseletivamente frente às enzimas. (Ver PDF) Na última parte deste trabalho foi desenvolvido um novo método de síntese de biciclos [3.2.1] (32) (Esquema 2) (Ver PDF). / In the first part of this dissertation, we reported the screening of Basidiomycetes fungus for the oxidation of the sulfides into sulfoxides. The Basidiomycetes fungs are known as white rot fungus, because promote the degrade of lignin in wood, causing the death of the plant. The screening was reported with four aromatic sulfides (Table I) and six Basidiomycetes fungus: Pycnoporus sanguineos CCB 501, Trametes versicolor CCB 202, Trametes rigida CCB 285, Trichaptum byssogenum CCB 203, Trametes villosa CCB 291, Irpex lacteus CCB 196. Table 1. Oxidation of aromatic sulfides by whole fungal cells. (See PDF) In the second part of this dissertation, we synthesized eight bi-funcionalizated compounds with sulfide, selenide and ketone groups (Scheme 1). Theses compounds were submitted to the action of enzymatic system ofBasidiomycetes fungi. (See PDF) In the last part of this dissertation it is reported a new method for the synthesis of bicycle [3.2.1] (32) (Scheme 2). (See PDF)

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