Comparative Study of Chemical Profiles of Leaf, Root and Seed Essential Oils of Clausena anisata (Willd.) Hook

Larayetan, Rotimi; Ilecholubo, Awodi Patience; Okoh, Omobola O.; Okoh, Anthony I.

doi:10.14233/ajchem.2018.20867

Cited by 2 publications

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References 11 publications

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“…e plants from the genus Clausena are abundant in natural resource and possess many important sources of phytochemicals, particularly alkaloids, coumarins, limonoids, and essential oils (EOs) [1,3]. Some EOs have pleasant odor [5][6][7][8][9] and have been reported to have potential for using as effective insecticides [5,10].…”

Section: Introductionmentioning

confidence: 99%

Essential Oils from Clausena Species in China: Santalene Sesquiterpenes Resource and Toxicity against Liposcelis bostrychophila

Guo

Wang

Chen

et al. 2018

Journal of Chemistry

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To develop natural product resources from the Clausena genus (Rutaceae), the essential oils (EOs) from four Clausena plants (Clausena excavata, C. lansium, C. emarginata, and C. dunniana) were analyzed by GC-MS. Their lethal (contact toxicity) and sublethal effects (repellency) against Liposcelis bostrychophila (LB) adults were also evaluated. Santalene sesquiterpene was the precursor substance of santalol, a valuable perfumery. It was found that plenty of α-santalol (31.7%) and α-santalane (19.5%) contained in C. lansium from Guangxi Province and α-santalene (1.5%) existed in C. emarginata. Contact toxicity of the four EOs was observed, especially C. dunniana (LD50 = 37.26 µg/cm2). Santalol (LD50 = 30.26 µg/cm2) and estragole (LD50 = 30.22 µg/cm2) were the two most toxic compounds. In repellency assays, C. excavate, C. lansium, and C. emarginata exhibited repellent effect at the dose of 63.17 nL/cm2 2 h after exposure (percentage repellencies were 100%, 98%, and 96%, respectively). Four Clausena EOs and santalol had an excellent potential for application in the management of LB. Clausena plants could be further developed to find more resources of natural products.

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Section: Introductionmentioning

confidence: 99%

Essential Oils from Clausena Species in China: Santalene Sesquiterpenes Resource and Toxicity against Liposcelis bostrychophila

Guo

Wang

Chen

et al. 2018

Journal of Chemistry

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Effect of Seasonal Variation on the Secondary Metabolites and Antioxidant Activity of Callistemon citrinus (Curtis) Skeels (Myrtaceae) Grown in Eastern Cape of South Africa

2020

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Callistemon citrinus belong to the kingdom plantae, family Myrtaceae and genus Callistemon. It grows in Australia but has been naturalized in South Africa. It is used as traditional herb to combat both gastro-intestinal and respiratory diseases, pain, diseases caused by bacteria and fungi infection. About 500 g of the air-dried leaves were pulverized each month and subjected to hydro-distillation using a modified Clevenger apparatus. Hydro-distillation of the fresh leaves of C. citrinus gave a pale yellow volatile oil with a strong scenty fragrance, about 97 components were identified in the 12 treatments analyzed each month. The key components were pinocarvone (1.25-6.17 %), pinocarveol (0.10-9.56 %), α-terpineol (5.24-9.94 %), α-pinene (7.45-22.75 %), limonene (24.08) and eucalyptol (14.69-72.35 %). The compositional profile of the leaves of C. citrinus varied between (January-December). Treatments under investigation revealed markedly qualitatively and quantitatively differences. Antioxidant capacity of the volatile oil of C. citrinus leaves evaluated also demonstrated significance influence of seasonal variation on its activity. The most exigent activity for DPPH free radical scavenging was recorded in the month of September (spring) with an IC50 of 0.50 ± 0.04 mg mL-1, while the most paramount activity for the ABTS assay was 0.94 ± 0.02 mg mL-1 in January (summer).The lowest activity were observed in the June (winter) collection with IC50 of 1.45 ± 0.00 mg mL-1 and 2.19 ± 0.05 mg mL-1 for DPPH and ABTS assays, respectively. Results show that seasonal variations affected the chemical compositions, oil yield as well as antioxidant activities of the volatile oil of the leaves of (C. citrinus); therefore, it is important to consider such effects for industrial and therapeutic purposes.

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Comparative Study of Chemical Profiles of Leaf, Root and Seed Essential Oils of Clausena anisata (Willd.) Hook

Cited by 2 publications

References 11 publications

Essential Oils from Clausena Species in China: Santalene Sesquiterpenes Resource and Toxicity against Liposcelis bostrychophila

Essential Oils from Clausena Species in China: Santalene Sesquiterpenes Resource and Toxicity against Liposcelis bostrychophila

Effect of Seasonal Variation on the Secondary Metabolites and Antioxidant Activity of Callistemon citrinus (Curtis) Skeels (Myrtaceae) Grown in Eastern Cape of South Africa

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