• português (Brasil)
    • English
    • español
  • English 
    • português (Brasil)
    • English
    • español
  • Login
About
  • Policies
  • Instructions to authors
  • Contact
    • Policies
    • Instructions to authors
    • Contact
View Item 
  •   Home
  • Centro de Ciências Exatas e de Tecnologia - CCET
  • Programas de Pós-Graduação
  • Química - PPGQ
  • Teses e dissertações
  • View Item
  •   Home
  • Centro de Ciências Exatas e de Tecnologia - CCET
  • Programas de Pós-Graduação
  • Química - PPGQ
  • Teses e dissertações
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsAdvisorTitlesSubjectsCNPq SubjectsGraduate ProgramDocument TypeThis CollectionBy Issue DateAuthorsAdvisorTitlesSubjectsCNPq SubjectsGraduate ProgramDocument Type

My Account

Login

Análises de meroterpenos produzidos por Penicillium brasilianum

Thumbnail
View/Open
2027.pdf (9.673Mb)
Date
2008-02-14
Author
Eugênio, Patrícia de Fátima Menegoci
Metadata
Show full item record
Abstract
This work describes the use of the high performance liquid cromatography (HPLC) technic coupled to the mass spectrometry technique for the analysis of fungal extracts, and the main purpose was the detection of meroterpens produced by P. Brasilianum. The fungal species P. Brasilianum was cultivated in a variety of artificial culture media: rice, wheat, maize, rice broth, solid decanted from rice broth and liquid medium Czapeck. In all the culture media tested the fungus presented a very good development, and also, the ions related to the meroterpens in study were detected in all the fungal extracts produced by these cultivations, except in Czapeck medium. The atmospheric pressure chemical ionization (APCI) was compared to the electrospray ionization, for the meroterpens analysis, and the result obtained was a great increase in detection power for this class of compounds, with the use of APCI. The P. brasilianum fungus was cultivated in Czapeck medium in the presence of Pinus taeda resin, alizarin, oleanolic, benzoic, salicylic, 2,5-dihydroxybenzoic, 2,6-dihydroxy-4-methyl-benzoic, 3,5-dinitrosalicylic, 3,5-dinitrobenzoic and ferulic acids, and 2 ,4 ,6 -trihydroxyacetophenone. The presence of these exogenous aditives modified the fungal metabolic profile, because the cromatographic profiles of the extracts produced showed a differentiation, in comparation to the fungal extract without aditive. Only the fungal extract produced in the presence of ferulic acid presented the meroterpens PSP-3 and PSP-8. The fungal extracts produced without any aditive also did not present meroterpens.
URI
https://repositorio.ufscar.br/handle/ufscar/6419
Collections
  • Teses e dissertações

UFSCar
Universidade Federal de São Carlos - UFSCar
Send Feedback

UFSCar

IBICT
 

 


UFSCar
Universidade Federal de São Carlos - UFSCar
Send Feedback

UFSCar

IBICT