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1.
Acta amaz ; 33(2)2003.
Article in Portuguese | LILACS-Express | LILACS, VETINDEX | ID: biblio-1454961

ABSTRACT

Essential oils from leaves and thin branches of Piper reticulatum and P. crassinervium collected in the north region of Brazil, were obtained by steam distillation and analyzed by GC/MS. The oil of P. reticulatum was dominated by -elemene (24.6%) and - caryophyllene (16.7%). The major compounds identified in the oil of P. crassinervium were - caryophyllene (17.7%), -elemene (14.4%) and b-elemene (10.9%).


Os óleos essenciais das folhas e galhos finos de Piper reticulatum e de P. crassinervium, coletados na região norte do Brasil, foram obtidos por arraste à vapor e analisados através de GC/MS. O óleo de P. reticulatum é constituido principalmente por -elemeno (24,6%) e -cariofileno (16,7%). Os principais compostos identificados no óleo de P. crassinervium foram-cariofileno (17,7%), -elemeno (14,4%) e -elemeno (10,9%).

2.
Acta amaz ; 28(2)1998.
Article in English | LILACS-Express | LILACS, VETINDEX | ID: biblio-1454641

ABSTRACT

The essential oils from leaves and thin branches of Piper amapense, Piper ducket and Piper bartlingianum were analysed by GC/MS and all volatile compounds were identified as sesquiterpenes. The main constitutents identified in the oil of P. amapense were trans-caryophyllene (25.0%), caryophyllene oxide (17.0%) and -selinene (15.0%). The oil of P. duckei was dominated by trans-caryophyllene (23.5%), caryophyllene oxide (18.4%), -eudesmol (9.4%) and a-eudesmol (9.1%). The major components found in the oil of P. bartlingianum were x-cadinol (11.2%), p-elemene (10.5%), -muurolol (9.4%), (E)-nerolidol (9.0%).


Os óleos essenciais obtidos das folhas e galhos finos de Piper amapense, Piper duckei e Piper bartlingianum foram analisados por GC/MS. Os óleos dessas espécies são constituídos na sua totalidade por sesquiterpenos. Os principais constituintes identificados no óleo de P. amapense foram trans-cariofileno (25,0%), óxido de cariofileno (17,0%) e -selineno (15,0%). O óleo de P. duckei foi dominado por trans-cariofileno (23,5%), óxido de cariofileno (18,4%), -eudesmol (9,4%) e -eudesmol (9,1%). Os mais importantes componentes encontrados em P. bartlingianum foram -cadinol (11,2%), -elemene (10,5%), -muurolol (9,4%), (E)-nerolidol (9,0%).

3.
Acta amaz ; 23(2)1993.
Article in Portuguese | LILACS-Express | LILACS, VETINDEX | ID: biblio-1454496

ABSTRACT

From the bark of Guarea carinata was isolated as main constituent a diacetilated triterpen (I) of protolimonoids type, derived from apo-tirucalol, that showed antifeedant activity in biological control of Urbanus acawoios(Lepidoptera,Hesperiidae).


Do cerne de Guarea carinata foi isolado como principal constituinte um triterpeno di-acetilado (I). do grupo dos protolimonóides, derivado do apo-tirucalol e que mostrou atividade no controle biológico das larvas de Urbanus acawoioa(WILLIAMS, R. C, 1926) (Lepidoptera Hesperiidac).

4.
Acta amaz ; 23(2)1993.
Article in Portuguese | LILACS-Express | LILACS, VETINDEX | ID: biblio-1454497

ABSTRACT

In this paper we related the identification and isolation of stearic, linolenic and palmitic acids and the isolation and structural determination of the 7-desacetoxy-7-hidroxyazadirone present in the hexan extract of the fruits of Guarea trichilioides. From the chloroform extrat of steam bark were isolated and identificated the antraquinones: chrysophanol and physcion.


Da casca da madeira de Guarea trichilioides foram isoladas e identificadas através de métodos espectrométricos as antraquinonas crisofanol e fisciona e das sementes o limonóide 7-desacetoxi-7-hidroxiazadirona. Da fração lipofílica das sementes foram ainda identificados por co-injeçao de padrões, através de cromatografia gasosa os ácidos esteárico, palmítico e linolênico.

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