Thiamine
Mostrando 25-36 de 361 artigos, teses e dissertações.
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25. Biochemical characterization of the biosynthesis of thiamine (Vitamin B1) in Plasmodium falciparum. / Caracterização bioquímica da biossíntese de tiamina (vitamina B1) em Plasmodium falciparum .
Nesta dissertação, foi caracterizada a via de biossíntese de tiamina (Vitamina B1) nas três formas intraeritrocitárias de P. falciparum. Foram realizadas marcações metabólicas, utilizando diferentes precursores radioativos envolvidos na biossíntese de tiamina, já descritos para outros organismos. A utilização do precursor [1-14C] acetato de sódi
Publicado em: 2007
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26. Simultaneous determination and classification of riboflavin, thiamine, nicotinamide and pyridoxine in pharmaceutical formulations, by UV-visible spectrophotometry and multivariate analysis
Soft Independent Modeling of Class Analogy (SIMCA) e Regressão por Mínimos Quadrados Parciais foram usados nesse trabalho para a identificação e quantificação de tiamina, riboflavina, nicotinamida e piridoxina, por espectrofotometria UV-Vis, sem realizar os procedimentos analíticos de separação e pré-concentração. Para a quantificação, os inter
Journal of the Brazilian Chemical Society. Publicado em: 2006-08
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27. Efeito neurodegenerativos causados pela deficiência de vitamina B1
Oxidative stress, selective neuronal loss, and diminished activity of thiaminedependent enzymes is assumed to characterize most of the neurodegenerative diseases. Thiamine deficiency (TD) models have been used to produce selective neurodegeneration basically because of the mild impairment of oxidative metabolism. In the present study, we report that TD elici
Publicado em: 2006
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28. "Infusion of glucose and thiamine in rats treated with acute dose of ethanol" / "Infusão de glicose e tiamina em ratos tratados com dose aguda de etanol"
Postula-se que o metabolismo do etanol gera substâncias de alta reatividade como o acetaldeído e radicais livres, que promovem o estresse oxidativo pelo excessivo consumo de substâncias do sistema antioxidante. Embora não haja consenso na literatura, o uso intravenoso de glicose em casos de intoxicação aguda por álcool é prática rotineira visando re
Publicado em: 2006
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29. Análise proteômica da embriogênese somática e da aquisição de competência embriogência de Ocotea catharinensis Mez (Lauraceae)
Ocotea catharinensis is a forest tree species from Mata Atlântica that has economic importance due to its wood and essential oils. O. catharinensis became an endangered species mostly because of its intense exploitation and its low seed production and viability. The objective of this work was to study O. catharinensis somatic embryogenesis through the compa
Publicado em: 2006
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30. Técnicas de cultivo in vitro e microenxertia ex vitro visando a eliminação do Cowpea Aphid-Borne Mosaic virus em Maracujazeiro-Azedo
The sour passion fruit plant (Passiflora edulis Sims f. flavicarpa Deg.) is one of the most important Brazilian fruitbearings and its cultivation presents good perspectives of expansion. The culture development has been made more difficult by diseases, specially the fruit hardening disease, caused by the Cowpea aphid-borne mosaic virus (CABMV). The virus eli
Publicado em: 2006
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31. Modelamento matematico do processo de esterilização de alimentos condutivos em embalagem de vidro / Mathematical model of the process of conductive food sterilization in glass packing
The aim of this work was to build a mathematical model of the heat transfer during the sterilization process of a conductive baby food packed in glass container. The 3-dimensional model was built using the finite element technique. The model considered the thermal properties of food, glass, headspace and metal cap individually. The sample initial temperature
Publicado em: 2004
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32. Production, purificação, characterization and study of the alkaline application of one protease produced by 191 Cellulosimicrobium cellulans. / Produção, purificação, caracterização e estudo da aplicação de uma protease alcalina produzida por Cellulosimicrobium cellulans 191.
Cellulosimicrobium cellulans 191 is a microorganism that produces an enzyme complex capable of disrupting yeast cell walls, which is composed of b-1,3-glucanase, protease and chitinase. This microorganism adheres to yeast cell walls and than lyses them. It was isolated from industrial fermentation sludge. Dried Saccharomyces cerevisiae cells were used in the
Publicado em: 2004
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33. Caracterização da localização subcelular da proteína THI1 de Arabidopsis thaliana. / Characterization of the subcellular localization of arabidopsis thaliana thip.
Arabidopsis thaliana thi1 gene product is probably involved in both thiamine biosynthesis as well as protection of organellar DNA from damage. Studies of thiamine biosynthesis in plants suggest a plastid location for the pathway, which is in agreement with the predicted THI1 N-terminal chloroplastic transit peptide (TP). On the other hand, thiamine is synthe
Publicado em: 2002
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34. Estudo da degradação de polimeros sinteticos de importancia industrial por linhagens fungicas
This work describes the action of basidiomycetes fungi on the degradability of the four main synthetic polymers used in food packaging: polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC) and another synthetic polymer, a polyurethane foam (PU). The microorganisms were grown in the salts liquid medium, pH 6.8, cont
Publicado em: 2001
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35. Interceptação nucleofilica do intermediario 5-(2-furoil)-2-penteno-4-inal a partir da monotosilhidrazona de furila : sintese de sistemas ciclicos e heterociclicos a partir de animais e hidrazinas
In this work we developed a new "on step" metlhod for the synthesis of furil from furfural, which employs thiamine (vitamin B-1) as the catalys. This method proved to be very promissing in that, preliminary studies indicate that several other diazoketones 2,2 -pyridil [55], 2.2 -thenil [56] and benzyl [57] can be obtained efficiently by the same approach. Al
Publicado em: 1994
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36. Regeneração de plantas de alho (cv. Chonan), via suspensão celular
Garlic (Allium sativum L.) is a vegetable that is propogated exclusively by vegetative means and it is difficult therefore, to establish a classical breeding programme with genetic recombination through meiotic processes. Hence, in this specie, tissue culture is viewed as a viable alternative to induce and detect variability anel/or mutations. Among the tiss
Publicado em: 1991