Table 6.
Bioactivities of C. odorata essential oils and extracts.
| Bioactivities | Part used | Type of extracts | Dosage/Results | Suggested constituents with respective activities | References |
|---|---|---|---|---|---|
| Antimicrobial (i) Antibacterial (ii) Antifungal (iii) Antiprotozoal |
(i) Whole plant (ii) Bark (iii) Leaf |
(i) Essential oil (ii) n-Hexane (iii) Ethyl acetate (iv) Ethanolic (v) Methanolic (vi) Cyclohexane (vii) Petroleum ether (viii) Chloroform |
(i) Well diffusion assay: 100–400 µg/well tested against variety of Gram-positive, Gram-negative bacteria and fungi | (i) Linalool (ii) Linalyl acetate (iii) Liriodenine (iv) O-Methylmoschatoline (v) 3,4-Dihydroxybenzoic acid (vi) Methyl eugenol (vii) n/a (viii) n/a |
[26] |
| (ii) Disc diffusion assay: 200–400 μg/disc tested against variety of Gram-positive, Gram-negative bacteria and fungi | [28] | ||||
| (iii) 0.23 mg/mL (MIC90%) against S. aureus | [32] | ||||
| (iv) 12.5 ± 3.9 µg/mL (IC50) against P. falciparum FcB1 strain | [33] | ||||
|
| |||||
| Antibiofilm | Flower | Essential oil | (i) 0.01% (v/v) showed 80% inhibition against biofilm for S. aureus ATCC 6538 | (i) cis-Nerolidol (ii) trans-Nerolidol |
[5] |
| (ii) Inhibit adherence phase of both clinical strains of S. aureus and K. pneumonia (2 logs reduction) | |||||
|
| |||||
| Antioxidant | (i) Bark (ii) Leaf (iii) Flower |
(i) Ethyl acetate (ii) Methanolic (iii) Essential oil |
(i) 79% DPPH inhibition tested at 50 ppm | (i) n/a | [26] |
| (ii) 290.0 ± 13.1% of ferric reducing power at 0.5 µg/mL | (ii) n/a | [34] | |||
| (iii) 63.8 ± 0.45% of DPPH inhibition | (iii) n/a | [30] | |||
| (iv) 75.5 ± 0.51% inhibition in the β-carotene bleaching test (v) DPPH radical scavenging activity (80.06 ± 0.02%) |
|||||
|
| |||||
| Insecticidal (i) A. aegypti (ii) C. quinquefasciatus (iii) An. Dirus (mosquitoes) |
Flower | Essential oil | (i) Tested 1%, 5%, and 10% (w/v) on A. aegypti, C. quinquefasciatus, and An. Dirus, LC50 values of 9.77%, 8.82%, and 4.99%, respectively | (i) n/a | [35] |
| (ii) 10% in soybean oil exhibited oviposition-deterrent and ovicidal activities | (ii) n/a | [36] | |||
| (iii) 0.1 mg/mL showed larvicidal activity against A. aegypti | (iii) n/a | [37] | |||
| (iv) LD50 at 52.96 ppm against immature stage of A. aegypti | (iv) n/a | [38] | |||
| (iv) Musa domestica (housefly) | (v) Prepared in ethyl alcohol, LT50 of 52.08 hours, and LC50 of 29.36% towards Musa domestica | (v) n/a | [39] | ||
| (v) R. speratus (termite) | (vi) 2 mg/filter showed 18.0 ± 5.8% and 94.0 ± 4.0% mortalities after 2 and 7 days of exposure | (vi) n/a | [40] | ||
| (vi) S. zeamais (agriculture pest) | (vii) LD50 value of 33.14 μg/adult | (vii) Linalool | [41] | ||
| (viii) LD50 value of 14.77 mg/L (vapour phase toxicity bioassay) | |||||
|
| |||||
| Insect repellent (i) A. aegypti (ii) C. quinquefasciatus (iii) An. dirus (mosquitoes) (iv) T. castaneum (beetle) |
(i) Flower (ii) Leaf |
Essential oil | (i) Prepared in soybean oil, ED50 of 0.045, 2.149, and <0.003 mg/cm2against A. aegypti, A. dirus,and C. quinquefasciatus,respectively | (i) Linalool | [42] |
| (ii) Protection time towards A. aegypti, A. dirus, and C. quinquefasciatus (8.4, 24.0, and 60.0 minutes, resp.) | |||||
| (iii) Prepared in ethyl alcohol, protection time against A. aegypti, and C. quinquefasciatus (86.67 ± 10.40 and 126.0 ± 15.77 minutes) at 0.33 µL/cm2 | (ii) n/a | [43] | |||
| (iv) Strongest repellent effect at 5 μL/g of oats | (iii) n/a | [3] | |||
| (v) 98% repellency after 2 and 4 hours exposure | |||||
|
| |||||
| Antimelanogenesis | (i) Flower bud | Methanolic | (i) Inhibition on melanin production in B16 melanoma 4A5 cells | (i) Canangaterpenes I (ii) (3R,3aR,8aS)-3-Isopropyl-8a-methyl-8-oxo-1,2,3,3a,6,7,8,8a-octahydroazulene-5-carbaldehyde |
[8] |
| (ii) Terpenoid derivatives, canangaterpenes I (IC50 = 3.6 µM), and (3R,3aR,8aS)-3-isopropyl-8a-methyl-8-oxo-1,2,3,3a,6,7,8,8a-octahydroazulene-5-carbaldehyde (IC50 = 2.5 µM) | |||||
| (ii) Seed | (iii) Inhibition on tyrosinase protein expression in mouse B16 melanoma cells | (iii) N-trans-Feruloyltyramine | [18] | ||
|
| |||||
| Anti-inflammatory | (i) n/a (ii) Leaf (iii) Fruit |
(i) Essential oil (ii) Methanolic (iii) Ethanolic |
(i) Strong lipoxygenase inhibitory effect (~80%) at 0.5 μg/mL | (i) Linalool | [6] |
| (ii) Inhibition on nitric oxide release in RAW264.7 (97.9 ± 14.6%) at 50 µg/mL | (ii) Linalyl acetate | [34] | |||
| (iii) In carrageenan induced paw edema model, paw volume inhibition of 62.9% at 100 mg/kg | (iii) n/a | [44] | |||
|
| |||||
| Sedative, relaxing, and harmonizing effect | n/a | Essential oil | (i) Reduced systolic and diastolic BP through sniffing | (i) n/a | [45] |
| (ii) Decreased pulse rate and stress level | |||||
| (iii) Increased alertness | |||||
| (iv) Transdermal administration resulted decrease in both physiological and behavioural level | (ii) n/a | [46] | |||
|
| |||||
| Effect on mood and cognitive performance | n/a | Essential oil | Reduced alertness mood and calmness but without increased cognitive performance | n/a | [47] |
|
| |||||
| Spermatotoxic | Root bark | Ethanolic | (i) Immobilized rat's sperm within seconds | (i) A 52 kd protein | [48] |
| (ii) 50 mg/100 g body weight/day reduced sperm motility | (ii) n/a | [49] | |||
| (iii) 100 mg/100 g body weight/day caused 94% abnormal sperm morphology | |||||
|
| |||||
| Antihyperglycemic | (i) Leaf and stem (ii) Flower buds |
(i) Dichloromethane (ii) Methanolic |
(i) Alpha-amylase inhibitory effect with 22.6 ± 1.3% (leaf) and 25.3 ± 3.3% (stem) inhibition at 7.8 μg/mL | (i) n/a | [7] |
| (ii) Aldose reductase inhibitory effect, IC50 at 1.2, 1.5, and 0.8 μM by canangaterpene I, (E)-[(1R,3R,5S,6S,8S)-6-hydroxy-1,3-dimethoxy-2-oxaspiro[4,5]decan-8-yl]methyl] caffeate, and canangafruiticoside E respectively | (ii) Canangaterpene I (iii) (E)-[(1R,3R,5S,6S,8S)-6-Hydroxy-1,3-dimethoxy-2-oxaspiro[4,5]decan-8-yl]methyl] caffeate (iv) Canangafruiticoside E |
[23] | |||
IC50: half maximal inhibitory concentration.
LD50: median lethal dose.
LT50: median lethal time.
ED50: median effective dose.
n/a: not available.