Abstract
A study was conducted to determine the chemical composition and the antibacterial activity of essential oils from Bocageopsis multiflora (Mart.) R.E. Fr., Ephedranthus amazonicus R.E. Fr., Guatteria blepharophylla Mart. and Xylopia aromatica (Lam.) Mart . The essential oils were obtained from the leaves by hydrodistillation and analyzed by GC-FID and GC-MS. The chromatograms showed the predominance of sesquiterpenoids. Spathulenol was the major constituent of oils of B. inultiflora (20.3%), X aromatica (21.5%) and E. amazonicus (16.9%); followed by caryophyllene oxide of G. blepharophylla (55.7%). Other constituents with significant percentages were the sesquiterpenes P-bisabolene (11.9%) in the samples oil of B. multiflora, humulene epoxide 11 (16.3%) -of E. amazonicus, the monoterpenes trans-pinocarveol (10.2%) and dihydrocarveol (11.6%) of X aromatica. The essential oils of X. aromatica and G. blepharophylla showed strong activity against Gram-positive bacteria Streptococcus sanguinis by microdilution method. The antimicrobial activity against Staphylococcus aureus also was detected by G. blepharophylla essential oil.
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Claims 12
Claim · model-written summary
Sesquiterpenoids predominated in the essential oils.
- Taxon
- AnnonaceaeAnnonaceaet0
- Outcome
- predominance of sesquiterpenoidse0
Verbatim
e0“The chromatograms showed the predominance of sesquiterpenoids”
t0“Four Species of Annonaceae”
Claim · model-written summary
Spathulenol was the major oil constituent of B. inultiflora at 20.3%.
Verbatim
e0“Spathulenol was the major constituent of oils of B. inultiflora (20.3%)”
Claim · model-written summary
Spathulenol was the major oil constituent of X aromatica at 21.5%.
- Taxon
- X aromatica
Xylopia aromaticae0 - Outcome
- Spathulenol was the major constituente0
- Value
- 21.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spathulenol was the major constituent of oils of B. inultiflora (20.3%), X aromatica (21.5%)”
Claim · model-written summary
Spathulenol was the major oil constituent of E. amazonicus at 16.9%.
- Taxon
- E. amazonicusEphedranthus amazonicuse0
- Outcome
- Spathulenol was the major constituente0
- Value
- 16.9%e0
Verbatim
e0“Spathulenol was the major constituent of oils of B. inultiflora (20.3%), X aromatica (21.5%) and E. amazonicus (16.9%)”
Claim · model-written summary
Caryophyllene oxide constituted 55.7% of G. blepharophylla oil.
- Taxon
- G. blepharophyllaGuatteria blepharophyllae0
- Outcome
- caryophyllene oxidee0
- Value
- 55.7%e0
Verbatim
e0“caryophyllene oxide of G. blepharophylla (55.7%)”
Claim · model-written summary
P-bisabolene constituted 11.9% of B. multiflora oil.
- Taxon
- B. multifloraBocageopsis multiflorae0
- Outcome
- P-bisabolenee0
- Value
- 11.9%e0
Verbatim
e0“P-bisabolene (11.9%) in the samples oil of B. multiflora”
Claim · model-written summary
Humulene epoxide 11 constituted 16.3% of E. amazonicus oil.
- Taxon
- E. amazonicusEphedranthus amazonicuse0
- Outcome
- humulene epoxide 11e0
- Value
- 16.3%e0
Verbatim
e0“humulene epoxide 11 (16.3%) -of E. amazonicus”
Claim · model-written summary
Trans-pinocarveol constituted 10.2% of X aromatica oil.
- Taxon
- X aromaticaXylopia aromaticae0
- Outcome
- trans-pinocarveole0
- Value
- 10.2%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“trans-pinocarveol (10.2%) and dihydrocarveol (11.6%) of X aromatica”
Claim · model-written summary
Dihydrocarveol constituted 11.6% of X aromatica oil.
- Taxon
- X aromaticaXylopia aromaticae0
- Outcome
- dihydrocarveole0
- Value
- 11.6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“trans-pinocarveol (10.2%) and dihydrocarveol (11.6%) of X aromatica”
Claim · model-written summary
X. aromatica oil showed strong activity against Streptococcus sanguinis.
- Taxon
- X. aromaticaXylopia aromaticae0
- Outcome
- strong activity against Gram-positive bacteria Streptococcus sanguinise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The essential oils of X. aromatica and G. blepharophylla showed strong activity against Gram-positive bacteria Streptococcus sanguinis”
Claim · model-written summary
G. blepharophylla oil showed strong activity against Streptococcus sanguinis.
- Taxon
- G. blepharophyllaGuatteria blepharophyllae0
- Outcome
- strong activity against Gram-positive bacteria Streptococcus sanguinise0
Verbatim
e0“The essential oils of X. aromatica and G. blepharophylla showed strong activity against Gram-positive bacteria Streptococcus sanguinis”
Claim · model-written summary
G. blepharophylla oil showed antimicrobial activity against Staphylococcus aureus.
- Taxon
- G. blepharophyllaGuatteria blepharophyllae0
- Outcome
- antimicrobial activity against Staphylococcus aureuse0
Verbatim
e0“The antimicrobial activity against Staphylococcus aureus also was detected by G. blepharophylla essential oil”