Abstract
Eucalyptus grandis × E. urophylla was a unique hybridization in China. However, the chemical and pharmacological properties were rarely reported. Therefore, in this work, we used a steam distillation method to obtain essential oils from leaves of E. grandis × E. urophylla, and further evaluated the antioxidant, antimicrobial, and phytotoxic potential of the essential oil. Gas chromatography mass spectrometry (GC-MS) was applied to investigate the chemical composition of E. grandis × E. urophylla essential oil (EEO) and the results showed that the main components of EEO were monoterpenes followed by sesquiterpenes. Among them, α-pinene accounted about 17.02%. EEO could also well scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2, 2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) free radicals showing a good free radical clearance ability. In addition, EEO efficiently inhibited the growth of six kinds of bacteria as well as seven kinds of plant pathogens, especially Salmonella typhimurium and Colletotrichum gloeosporioides. Moreover, the seedling germination of Raphanus sativus, Lactuca sativa, Lolium perenne, and Bidens pilosa was significantly suppressed by EEO, thus, indicating essential oils from eucalyptus possessed an excellent phytotoxic activity. This study may give a better understanding on EEO and provide a pharmacological activities analysis contributing to the further research of EEO as a functional drug in agronomic and cosmetic industries.
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Claims 9
Claim · model-written summary
Monoterpenes were the main constituents of eucalyptus leaf essential oil, followed by sesquiterpenes.
- Taxon
- Eucalyptus grandis × E. urophylla
Eucalyptus grandise1 - Outcome
- main components of EEO were monoterpenes followed by sesquiterpenese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the main components of EEO were monoterpenes followed by sesquiterpenes”
e1“Eucalyptus grandis × E. urophylla was a unique hybridization in China”
Claim · model-written summary
α-Pinene accounted for about 17.02% of eucalyptus essential oil.
- Taxon
- Eucalyptus grandis × E. urophyllaEucalyptus grandise1
- Outcome
- α-pinenee0
- Value
- 17.02%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“α-pinene accounted about 17.02%”
e1“Eucalyptus grandis × E. urophylla was a unique hybridization in China”
Claim · model-written summary
Eucalyptus essential oil scavenged DPPH and ABTS free radicals.
- Taxon
- Eucalyptus grandis × E. urophyllaEucalyptus grandise1
- Outcome
- scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2, 2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) free radicalse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EEO could also well scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2, 2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) free radicals”
e1“Eucalyptus grandis × E. urophylla was a unique hybridization in China”
Claim · model-written summary
Eucalyptus essential oil inhibited growth of six bacterial kinds, especially Salmonella typhimurium.
- Taxon
- Eucalyptus grandis × E. urophyllaEucalyptus grandise1
- Interactor
- Salmonella typhimurium
Salmonella enterica subsp. enterica serovar Typhimuriume0other - Outcome
- growth of six kinds of bacteriae0
- Direction
- inhibitede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EEO efficiently inhibited the growth of six kinds of bacteria as well as seven kinds of plant pathogens, especially Salmonella typhimurium and Colletotrichum gloeosporioides”
e1“Eucalyptus grandis × E. urophylla was a unique hybridization in China”
Claim · model-written summary
Eucalyptus essential oil inhibited seven plant pathogens, especially Colletotrichum gloeosporioides.
- Taxon
- Eucalyptus grandis × E. urophyllaEucalyptus grandise1
- Interactor
- Colletotrichum gloeosporioides
Colletotrichum gloeosporioidese0pathogen - Outcome
- seven kinds of plant pathogense0
- Direction
- inhibitede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EEO efficiently inhibited the growth of six kinds of bacteria as well as seven kinds of plant pathogens, especially Salmonella typhimurium and Colletotrichum gloeosporioides”
e1“Eucalyptus grandis × E. urophylla was a unique hybridization in China”
Claim · model-written summary
Eucalyptus essential oil significantly suppressed Raphanus sativus seedling germination.
- Taxon
- Raphanus sativus
Raphanus sativuse0 - Treatment
- EEOe0
- Outcome
- seedling germinatione0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seedling germination of Raphanus sativus, Lactuca sativa, Lolium perenne, and Bidens pilosa was significantly suppressed by EEO”
Claim · model-written summary
Eucalyptus essential oil significantly suppressed Lactuca sativa seedling germination.
- Taxon
- Lactuca sativa
Lactuca sativae0 - Treatment
- EEOe0
- Outcome
- seedling germinatione0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seedling germination of Raphanus sativus, Lactuca sativa, Lolium perenne, and Bidens pilosa was significantly suppressed by EEO”
Claim · model-written summary
Eucalyptus essential oil significantly suppressed Lolium perenne seedling germination.
- Taxon
- Lolium perenne
Lolium perennee0 - Treatment
- EEOe0
- Outcome
- seedling germinatione0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seedling germination of Raphanus sativus, Lactuca sativa, Lolium perenne, and Bidens pilosa was significantly suppressed by EEO”
Claim · model-written summary
Eucalyptus essential oil significantly suppressed Bidens pilosa seedling germination.
- Taxon
- Bidens pilosa
Bidens pilosae0 - Treatment
- EEOe0
- Outcome
- seedling germinatione0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seedling germination of Raphanus sativus, Lactuca sativa, Lolium perenne, and Bidens pilosa was significantly suppressed by EEO”
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See all 271 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.