Abstract
In present study, eight compounds were isolated from the Aloe vera L. var. chinensis Haw. Berg. grown in Vietnam from the methanolic extract. The isolated compounds were elucidated for their structures on the basis of NMR spectroscopic data and found to aloe emodin, emodin, 2-hydroxy-1- methoxy-anthraquinone, 1,6-dihydroxy-2-methylanthraquinone, kaempferol 3-O-α-Larabinofuranoside, kaempferol 3-O-gentibioside, β-amyrin and ursolic acid. Antibacterial activity of Aloe vera gel extract showed strong effects on Gram-positive bacteria than Gram-negative stains, except Escherichia coli. At low concentration 50 μg/mL, the crude extract did not showed the inhibition. Four of the five Gram-positive bacteria were inhibited at 100 μg/mL of methanol extract. At 400 μg/mL, the maximum zone of inhibition was observed against Bacilluss pumilus (17 mm), Escherichia coli (15 mm), Sarcina lurtea (13 mm) and Vibrio cholera (12 mm).
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Claims 11
Claim · model-written summary
Eight compounds were isolated from methanolic extract of Aloe grown in Vietnam.
- Taxon
- Aloe vera L. var. chinensis Haw. Berg.
Aloe vera var. chinensise0 - Outcome
- eight compounds were isolatede0
- Setting
- Vietname0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In present study, eight compounds were isolated from the Aloe vera L. var. chinensis Haw. Berg. grown in Vietnam from the methanolic extract.”
Claim · model-written summary
Aloe constituents included aloe emodin, emodin and 2-hydroxy-1- methoxy-anthraquinone.
- Taxon
- Aloe vera L. var. chinensis Haw. Berg.Aloe vera var. chinensist0
- Outcome
- aloe emodin, emodin, 2-hydroxy-1- methoxy-anthraquinonee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“found to aloe emodin, emodin, 2-hydroxy-1- methoxy-anthraquinone”
t0“Aloe vera L. var. chinensis Haw. Berg.”
Claim · model-written summary
Aloe constituents included 1,6-dihydroxy-2-methylanthraquinone and two kaempferol glycosides.
- Taxon
- Aloe vera L. var. chinensis Haw. Berg.Aloe vera var. chinensist0
- Outcome
- 1,6-dihydroxy-2-methylanthraquinone, kaempferol 3-O-α-Larabinofuranoside, kaempferol 3-O-gentibiosidee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1,6-dihydroxy-2-methylanthraquinone, kaempferol 3-O-α-Larabinofuranoside, kaempferol 3-O-gentibioside”
t0“Aloe vera L. var. chinensis Haw. Berg.”
Claim · model-written summary
Aloe constituents included β-amyrin and ursolic acid.
- Taxon
- Aloe vera L. var. chinensis Haw. Berg.Aloe vera var. chinensist0
- Outcome
- β-amyrin and ursolic acide0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“β-amyrin and ursolic acid”
t0“Aloe vera L. var. chinensis Haw. Berg.”
Claim · model-written summary
Aloe gel antibacterial effects were stronger for Gram positive bacteria than Gram negative strains except E. coli.
Verbatim
e0“Antibacterial activity of Aloe vera gel extract showed strong effects on Gram-positive bacteria than Gram-negative stains, except Escherichia coli.”
Claim · model-written summary
Crude Aloe extract at 50 μg/mL did not inhibit bacteria.
Verbatim
e0“At low concentration 50 μg/mL, the crude extract did not showed the inhibition.”
e1“Gram-positive bacteria than Gram-negative stains”
Claim · model-written summary
Four of five Gram positive bacteria were inhibited at 100 μg/mL methanol extract.
- Taxon
- Gram-positive bacteriae0
- Treatment
- 100 μg/mL of methanol extracte0
- Outcome
- inhibitede0
- Value
- Four of the fivee0
Not reportedDirection
Verbatim
e0“Four of the five Gram-positive bacteria were inhibited at 100 μg/mL of methanol extract.”
Claim · model-written summary
At 400 μg/mL the maximum inhibition zone for Bacilluss pumilus was 17 mm.
Verbatim
e0“At 400 μg/mL, the maximum zone of inhibition was observed against Bacilluss pumilus (17 mm)”
Claim · model-written summary
At 400 μg/mL the maximum inhibition zone for Escherichia coli was 15 mm.
- Taxon
- Escherichia coli
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Escherichia colie0 - Treatment
- 400 μg/mLe0
- Outcome
- zone of inhibitione0
- Direction
- maximume0
- Value
- 15 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“At 400 μg/mL, the maximum zone of inhibition was observed against Bacilluss pumilus (17 mm), Escherichia coli (15 mm)”
Claim · model-written summary
At 400 μg/mL the maximum inhibition zone for Sarcina lurtea was 13 mm.
Verbatim
e0“At 400 μg/mL, the maximum zone of inhibition was observed against Bacilluss pumilus (17 mm), Escherichia coli (15 mm), Sarcina lurtea (13 mm)”
Claim · model-written summary
At 400 μg/mL the maximum inhibition zone for Vibrio cholera was 12 mm.
- Taxon
- Vibrio cholera
Vibrio choleraee0 - Treatment
- 400 μg/mLe0
- Outcome
- zone of inhibitione0
- Direction
- maximume0
- Value
- 12 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 400 μg/mL, the maximum zone of inhibition was observed against Bacilluss pumilus (17 mm), Escherichia coli (15 mm), Sarcina lurtea (13 mm) and Vibrio cholera (12 mm).”