Composition of the Leaf Volatile Oil ofMurray a koenigiiGrowing in Nigeria

Onayade, O. A.; Adebajo, AC

doi:10.1300/j044v07n04_07

Cited by 21 publications

(18 citation statements)

References 14 publications

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“…The possible mechanism of preventing insects to attack the grains have been described as the reduction of insect movement and death through occlusion of their spiracles, thereby, preventing respiration via trachea (Onayade, 2000;Raina et al, 2002;Semnani et al, 2006). The reduction in eclosion could either be due to egg mortality or larval mortality or even reduction in the hatching of the egg.…”

Section: Introductionmentioning

confidence: 99%

Toxicity and persistence of Boscia senegalensis Lam. (Ex Poir.) (Capparaceae) leaves on Callosobruchus maculatus Fab. (Coleoptera:Bruchidae)

Doumma¹,

Alfari²,

Sembène³

et al. 2012

Int. J. Bio. Chem. Sci

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In this study, we examined the toxicity and persistence of ground fresh leaves of B. senegalensis on the development of Callosobruchus maculatus, major insect pest of cowpea (V. unguiculata) in the sahelian area. The effect of the product has been evaluated over the three developmental stages (egg, larvae and adult) of C. maculatus. At high concentration (4 g/l of ground leaves), 100 % of adults were killed within 24 h of exposure to the leaf extract, and the development of newly laid eggs and neonate larvae was also inhibited. However, the ground leaves of B. senegalensis have a variable efficacy against the bruchid instars larva. The 2nd larvae stage (L2) of C. maculatus developing inside the seeds have proved to be highly susceptible while the 4th larval stage was relatively tolerant. The study of the toxicity persistence of the leaves of B. senegalensis showed that whatever its concentration, the efficacy of crushed leaves of B. senegalensis decreased with the storage time. At a concentration of 20 g/l, the effect of B. seneglensis can persist up to 7 days.

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Section: Introductionmentioning

confidence: 99%

Toxicity and persistence of Boscia senegalensis Lam. (Ex Poir.) (Capparaceae) leaves on Callosobruchus maculatus Fab. (Coleoptera:Bruchidae)

Doumma¹,

Alfari²,

Sembène³

et al. 2012

Int. J. Bio. Chem. Sci

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“…Fifty-eight compounds are present at <1.0% (Table 2). Variations in the diversity and chemical composition can result from climatic differences among locations (Onayade & Adebajo, 2000).…”

Section: Essential Oil Constituent Diversity Among the Locationsmentioning

confidence: 99%

“…a-Selinene was not reported earlier as dominant or major component of curry leaf essential oil. Sesquiterpenoid rich essential oils, with caryophyllene as the dominant compound, were reported (Hiremath et al, 1996;MacLeod & Pieris, 1982;Onayade & Adebajo, 2000;Raina et al, 2002).…”

Section: Essential Oil Composition and Chemotypesmentioning

confidence: 99%

“…b-Caryophyllene carries a nice, sweet and flowery fragrance as well as a fixative property (Ohloff, 1978) that may be responsible for the long lasting aroma and the use of curry leaf as a spice (Onayade & Adebajo, 2000). In addition to bcaryophyllene, terpene constituents contribute to the flavour (Chowdhury, 2000).…”

Section: Odour Characteristics Of the Essential Oilsmentioning

confidence: 99%

“…In addition to essential oils, carbazole and indole alkaloids with biological activities have been reported from various parts of the tree (Kumar et al, 1999). The chemical compositions of leaf essential oils were published from India (Hiremath, Madelgeri, & Masarkar 1996;Mallavarapu et al 2000), Bangladesh (Chowdhury, Bhuiyan, & Yusuf, 2008), China (Li et al, 1988;Zhu & Ding, 1991), Malaysia (Wong & Tie, 1993), Nigeria (Onayade & Adebajo, 2000) and Sri Lanka (MacLeod & Pieris, 1982). Variations induced by different locations in essential, trace and toxic elements in M. koenigii were reported (Choudhury & Garg, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Chemical diversity in curry leaf (Murraya koenigii) essential oils

Rao

Rajput

Mallavarapu³

2011

Food Chemistry

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Phytochemical Diversity of Murraya koenigii (L.) Spreng. from Western Himalaya

Verma

Chauhan

Padalia

et al. 2013

Chemistry & Biodiversity

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Murraya koenigii (L.) Spreng. (Rutaceae), commonly known as 'curry leaf tree', is a popular spice and condiment of India. To explore the diversity of the essential-oil yield and aroma profile of curry leaf, growing wild in foot and mid hills of north India, 58 populations were collected during spring season. M. koenigii populations were found to grow up to an altitude of 1487 m in north India. Comparative results showed considerable variations in the essential-oil yield and composition. The essential-oil yield varied from 0.14 to 0.80% in shade-dried leaves of different populations of M. koenigii. Analysis of the essential oils by GC and GC/MS, and the subsequent classification by statistical analysis resulted in four clusters with significant variations in their terpenoid composition. Major components of the essential oils of investigated populations were α-pinene (2; 4.5-71.5%), sabinene (3; <0.05-66.1%), (E)-caryophyllene (11; 1.6-18.0%), β-pinene (4; <0.05-13.6%), terpinen-4-ol (9; 0.0-8.4%), γ-terpinene (8; 0.2-7.4%), limonene (7; 1.1-5.5%), α-terpinene (6; 0.0-4.5%), (E)-nerolidol (14; 0.0-4.1%), α-humulene (12; 0.6-3.5%), α-thujene (1; 0.0-2.5%), β-elemene (10; 0.2-2.4%), β-selinene (13; 0.2-2.3%), and myrcene (5; 0.5-2.1%). Comparison of the present results with those in earlier reports revealed new chemotypes of M. koenigii in investigated populations from Western Himalaya. The present study documents M. koenigii populations having higher amounts of sabinene (3; up to 66.1%) for the first time.

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Composition of the Leaf Volatile Oil ofMurray a koenigiiGrowing in Nigeria

Cited by 21 publications

References 14 publications

Toxicity and persistence of <em>Boscia senegalensis</em> Lam. (Ex Poir.) (Capparaceae) leaves on <em>Callosobruchus maculatus</em> Fab. (Coleoptera:Bruchidae)

Toxicity and persistence of <em>Boscia senegalensis</em> Lam. (Ex Poir.) (Capparaceae) leaves on <em>Callosobruchus maculatus</em> Fab. (Coleoptera:Bruchidae)

Chemical diversity in curry leaf (Murraya koenigii) essential oils

Phytochemical Diversity of Murraya koenigii (L.) Spreng. from Western Himalaya

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