CROMATOGRAFIA GASOSA E AVALIAÇÃO DA ATIVIDADE ALELOPÁTICA DAS FRAÇÕES HEXANO, DICLOROMETANO E ACETATO DE ETILA DE Aster lanceolatus Willd. (ASTERACEAE)

Abstract

RESUMOAster lanceolatus é uma planta de corte conhecida como margarida-de-são-miguel, áster arbustiva e monte cassino. Por meio de cromatografia gasosa das amostras de frações hexano de Aster lanceolatus, verificou-se a presença de β-sitosterol nas respectivas frações. Esta substância ainda não havia sido relatada na espécie em estudo. O ensaio alelopático realizado com extrato bruto e frações das flores de Aster lanceolatus evidenciou a fração hexano, e o ensaio realizado com extrato bruto e frações dos caules e folhas de Aster lanceolatus, a fração acetato de etila.Palavras-chaves: Fitoquímica; Cromatografia Gasosa; Aster lanceolatus. ABSTRACTAster lanceolatus is a cut plant known as margarida-de-são-miguel, áster arbustiva and monte cassino. Through gaseous chromatography of the samples of hexane fractions from Aster lanceolatus, the β-sitosterol presence has been verified in the respective fractions. This substance still had not been told in the species in study. The allelophatic rehearsal accomplished with crude extract and fractions of the flowers from Aster lanceolatus evidenced the hexane fraction, and the rehearsal accomplished with crude extract and fractions of the stems and leaves of Aster lanceolatus, the fraction ethil acetate.

Potential allelopathic and antibacterial activity from Alternanthera philoxeroides

“…These results are similar to those observed by Dias et al (2007), who studying the effect of crude extract and fractions hexane, methylene chloride and ethyl acetate of stems, leaves and flowers of Aster lanceolatus in lettuce seeds, found that the ethyl acetate extract of stems and leaves adversely affected the response of the first count test.…”

Effectiveness of Asteraceae extracts on Trichostrongylidae eggs development in sheep

“…The first species to be selected was Aster lanceolatus Willd., commonly known as the panicled aster, tall white aster or white field aster (LORENZI; SOUZA, 1995), which presents antibacterial activity against Streptococcus pyogenes, Salmonella typhimurium and Staphylococcus aureus (DIAS et al, , 2006; fungicidal activity against Fusarium oxysporum and Cylindrocladium spathulatum (DIAS et al, 2006); and allelopathy against germination and growth of Lactuca sativa (DIAS et al, 2007).…”