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Acta Amazonica
Print version ISSN 0044-5967On-line version ISSN 1809-4392
Acta Amaz. vol.18 no.1-2 Manaus Mar./June 1988
https://doi.org/10.1590/1809-43921988182066
QUÍMICA
A presença de substâncias inorgânicas tóxicas no gênero Humirianthera (Icacinaceae)
1Instituto Nacional de Pesquisas da Amazônia - INPA, Manaus - AM
Neste trabalho relata-se o isolamento de cristais de tiocianato e de nitrato e nitrito de sódio e potássio no tubérculo e caule de Humirianthera ampla. Determinou-se ainda o teor de nitrato e nitrito nas folhas de H. ampla e H. rupestris, nas idades jovem e adulta. Os teores máximos de N-NO-3 observados para H. ampla e H. rupestris foram, res pectivamente, 8.828 mg% e 6.422 mg%.
In this paper we relate the isolation of crystals of sodium and potassium thio-cyanates, nitrates and nitrites from the tubers and stem of Humiranthera ampla. We have also determined the amounts of nitrate and nitrite in young and matures leaves of H. ampla and H. rupesiris. The maximum amounts of N-NO-3 observed in H. ampla and H. rupesiris were 8,828 mg% and 6,422 mg%, respectively.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
