Abstract
The chemical composition of the essential oils of Pereskia aculeata Mill. and P. grandifolia Haw. (Cactaceae), grown in Brazil, was studied by means of GC and GC-MS. In all, 37 compounds were identified, 30 for P. aculeata and 15 for P. grandifolia. Oxygenated diterpenes are the main constituents, both in the oil ofP. grandifolia (55.5%) and in that ofP. aculeata (29.4%). The essential oils were evaluated for their in vitro phytotoxic activity against germination and initial radicle growth of Raphanus sativus L., Sinapis arvensis L., and Phalaris canariensis L. seeds. The essential oil of P. grandifolia, at all doses tested, significantly inhibited the radicle elongation of R. sativus. Moreover, the antimicrobial activity of the essential oils was assayed against ten bacterial strains. The essential oils showed weak inhibitory activity against the Gram-positive pathogens.
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Claims 6
Claim · model-written summary
30 essential oil compounds were identified for P. aculeata.
- Taxon
- P. aculeata
.jpg?width=60)
Pereskia aculeatae0 - Outcome
- compounds were identifiede0
- Value
- 30e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“In all, 37 compounds were identified, 30 for P. aculeata and 15 for P. grandifolia.”
Claim · model-written summary
15 essential oil compounds were identified for P. grandifolia.
- Taxon
- P. grandifolia
Pereskia grandifoliae0 - Outcome
- compounds were identifiede0
- Value
- 15e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In all, 37 compounds were identified, 30 for P. aculeata and 15 for P. grandifolia.”
Claim · model-written summary
Oxygenated diterpenes were the main oil constituents in P. grandifolia (55.5%).
- Taxon
- P. grandifoliaPereskia grandifoliae0
- Outcome
- Oxygenated diterpenes are the main constituentse0
- Value
- 55.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oxygenated diterpenes are the main constituents, both in the oil ofP. grandifolia (55.5%) and in that ofP. aculeata (29.4%).”
Claim · model-written summary
Oxygenated diterpenes were the main oil constituents in P. aculeata (29.4%).
- Taxon
- P. aculeataPereskia aculeatae0
- Outcome
- Oxygenated diterpenes are the main constituentse0
- Value
- 29.4%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oxygenated diterpenes are the main constituents, both in the oil ofP. grandifolia (55.5%) and in that ofP. aculeata (29.4%).”
Claim · model-written summary
P. grandifolia oil significantly inhibited R. sativus radicle elongation at every tested dose.
- Taxon
- R. sativus
Raphanus sativuse0 - Treatment
- essential oil of P. grandifoliae0
- Interactor
- P. grandifoliaPereskia grandifoliae0other
- Outcome
- radicle elongation of R. sativuse0
- Direction
- inhibitede0
- Qualifier
- at all doses testede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The essential oil of P. grandifolia, at all doses tested, significantly inhibited the radicle elongation of R. sativus.”
Claim · model-written summary
The oils weakly inhibited Gram-positive pathogens in vitro.
- Interactor
- Gram-positive pathogense0pathogen
- Outcome
- weak inhibitory activity against the Gram-positive pathogense0
Not reportedTaxon
Verbatim
e0“The essential oils showed weak inhibitory activity against the Gram-positive pathogens.”
The same questions in other papers
botanical · growth · Raphanus sativus (radish)Positive and negative results
52 papers in the same direction as this paper · 99 in the opposite direction
- negative
- negative
- no effect
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See all 152 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.