The volatile constituents of the scent gland reservoir of the fruit-spotting bug, Amblypelta nitida

1972 ◽  
Vol 25 (2) ◽  
pp. 393 ◽  
Author(s):  
JT Baker ◽  
JD Blake ◽  
JK Macleod ◽  
DA Ironside ◽  
IC Johnson
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Aldol Condensation ◽  
Specific Interest ◽  
Scent Gland ◽  
Volatile Constituents ◽  
Dehydration Product

Using combined gas chromatography and mass spectrometry, ten components of the scent-gland complex of the coreoid Amblypelta nitida Stal have been identified. Of specific interest is the presence in the gland reservoir of 2-n-butyloct-2-enal, the aldol condensation-dehydration product of hexanal.

γ-butyrolactone from the black stink bug: aethus indicus westwood (hemiptera: pentatomidae)

1984 ◽  
Vol 39 (3-4) ◽  
pp. 313-314 ◽  
Author(s):  
T. O. Olagbemiro ◽  
M. N. Khan ◽  
A. Mohammed
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Carbon Chain ◽  
Gas Chromatography Mass Spectrometry ◽  
Stink Bug ◽  
Scent Gland ◽  
Volatile Constituents ◽  
Chromatography Mass Spectrometry

The volatile constituents of the black stink bug, Aethus indicus Westwood (Hemiptera: Pentatomidae) from Nigeria has been examined by combined gas chromatography- mass spectrometry. γ-Butyrolactone along with with several straight carbon-chain aliphatic materials have been identified in the scent gland complex

scholarly journals Volatile Constituents of Three Piper Species from Vietnam

2015 ◽  
Vol 10 (11) ◽  
pp. 1934578X1501001
Author(s):  
Le D. Hieu ◽  
Tran M. Hoi ◽  
Tran D. Thang ◽  
Isiaka A. Ogunwande
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Compositions ◽  
Flame Ionization Detection ◽  
Volatile Oils ◽  
Benzyl Benzoate ◽  
Volatile Constituents ◽  
Flame Ionization ◽  
Germacrene D ◽  
Leaf Oil

The chemical compositions of the essential oils obtained by hydrodistillation of three Piper plants grown in Vietnam are reported. The analysis was achieved by means of gas chromatography with flame ionization detection (GC-FID) and gas chromatography coupled with mass spectrometry (GC-MS). The main constituents of the leaf oil of Piper majusculum Blume were β-caryophyllene (20.7%), germacrene D (18.6%) and β-elemene (11.3%). The quantitatively significant compounds of the volatile oils of P. harmandii C. DC were sabinene (leaves, 14.5%; stems, 16.2%), benzyl benzoate (leaves, 20.0%; stems, 29.40%) and benzyl salicylate (leaves, 14.1%; stems, 24.3%). Also, α-cadinol (17.0%) was identified in large proportion in the leaf oil. However, sabinene (leaves, 17.9%; stems, 13.5%), benzyl benzoate (leaves, 20.5%; stems, 32.5%) and β-eudesmol (leaves, 13.8%; stems, 8.4%) were the main constituents of P. brevicaule C. DC. This is the first report on the volatile constituents of both P. harmandii and P. brevicaule.

Volatile Constituents of the Ligarine Extract of Eupatoriurn odoraturn

2013 ◽  
Vol 726-731 ◽  
pp. 245-249
Author(s):  
Zhong Liang Sun ◽  
Feng Xia Liu ◽  
Xian Qun Luo ◽  
Yu Cang Zhang ◽  
Jing Xu
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Radical Scavenging ◽  
Acid Methyl Ester ◽  
Eicosatrienoic Acid ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Constituents ◽  
Aerial Parts ◽  
Chromatography Mass Spectrometry ◽  
Main Components

Eupatoriurn odoratumaerial parts were extracted with ligarine and the volatile constituents isolated were analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). Volatile constituents were isolated from the ground aerial parts ofE. odoratumby ligarine extraction and analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). As a result, a total of fifteen compounds represented all of the extract were identified, amongst nine of fifteen compounds were sesquiterpenes. Esters and sesquiterpenes were found to compose three major chemotype accounted for 58.58% and 30.80% of the constituents, respectively. The main components was demonstrated to be dibutyl phthalate (39.73%), 11,14,17-eicosatrienoic acid, methyl ester (13.20%), (S)-spiro [4.nona-1,6-diene (6.80%), 1,2-benzenedicarboxylic acid, bis (2-methylpropyl) ester (5.65%) andcis-Z-α-bisabolene epoxide (5.56%). In addition, some pharmaceutical components such as α-cadinol and germacrene D were discovered. Antioxidant activity of the extract was assessed by the free radical scavenging (DPPH). The study offers theoretic basis for pharmaceutical utilization of the medicinal plantE. odoratum.

The Scent Glands and Their Chemicals in the Aposematic Cotton Harlequin Bug, Tectocoris-Diophthalmus (Heteroptera, Scutelleridae)

1987 ◽  
Vol 35 (3) ◽  
pp. 227 ◽  
Author(s):  
BW Staddon ◽  
MJ Thorne ◽  
DW Knight
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Investigation ◽  
Gas Chromatography Mass Spectrometry ◽  
Scent Glands ◽  
Scent Gland ◽  
Metathoracic Scent Gland ◽  
Developmental Fate ◽  
Dorsal Gland ◽  
Gland System

In describing differences in morphology, developmental fate and secretion composition in the scent glands of the cotton harlequin bug Tectocoris diophthalmus we have sought to extend comparative knowledge of the scent gland system in the pentatomoid families within the Hemiptera-Heteroptera. Chemical investigation of the secretions was undertaken by coupled gas chromatography-mass spectrometry (GC-MS). The following volatiles were detected: 2-hexenal, 2-hexenyl acetate and 2- octenyl acetate from the metathoracic scent gland (an adult gland); nonanal from the abdominal dorsal first gland (the divided dorsal gland) in the adults; 2-hexenal, 2-octenal, 4-oxohex-2-enal, dodecane and tridecane from the abdominal dorsal second and third glands (the undivided dorsal glands) in fifth-instar nymphs. Secretory units are sparse, opener muscles absent, and secretion scarcely, if at all, present in the second and third dorsal abdominal scent glands in the adults. T. diophthalmus is an addition to the small but growing list of pentatomoids in which biochemical divergence of the abdominal dorsal first gland from the abdominal dorsal second and third glands has been reported. The metathoracic scent gland in T. diophthalmus is comparatively small, as it is in many other aposematic species within the Hemiptera-Heteroptera.

scholarly journals Volatile Constituents of the Leaves of Kalanchoe pinnata From the Venezuelan Andes

2019 ◽  
Vol 14 (5) ◽  
pp. 1934578X1984270
Author(s):  
Ysbelia Obregón-Díaz ◽  
Alida Pérez-Colmenares ◽  
Karelys Obregón-Alarcón ◽  
Rosa Aparicio-Zambrano ◽  
Luis Rojas-Fermín ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Essential Oil ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Constituents ◽  
Chromatography Mass Spectrometry ◽  
Kalanchoe Pinnata

The essential oil from the leaves of Kalanchoe pinnata (Lam.) Pers. (Crassulaceae), collected in the Venezuelan Andes, was obtained by hydrodistillation and its composition determined by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). Nineteen compounds were identified, representing 95.2% of the oil. The most abundant components were α-curcumene (44.7%), 1-octen-3-ol (18.1%), β-curcumene (4.9%), and β-caryophyllene (3.7%).

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