查找使用阿拉丁产品的科研文献

Analysis of the Essential Oil of Elsholtzia ciliate Aerial Parts and Its Insecticidal Activities against Liposcelis bostrychophila

Mei Ping Zhao,Xin Chao Liu,Daowan Lai,Ligang Zhou,Zhi Long Liu

Water-distilled essential oil from Elsholtzia ciliate (Labiatae) aerial parts at flowering stage was analyzed by gas chromatography/mass spectrometry (GC/MS). Thirty-six compounds, accounting for 98.3% of the total oil content, were identified, and the main components of the essential oil were dehydroelsholtzia ketone (26.5%), ( R )-carvone (16.6%), elsholtzia ketone (14.6%), and D -limonene (4.1%). The essential oil contained higher amounts of monoterpenoids (83.4%) than of sesquiternoids (8.3%). Bioactivity-directed chromatographic separation of the essential oil on repeated silica gel columns led to the isolation of three monoterpenoids. The essential oil possessed fumigant toxicity against the booklice ( Liposcelis bostrychophila ) with an LC 50 value of 475.2 μg/l, while the isolated constituents, ( R )-carvone, dehydroelsholtzia ketone, and elsholtzia ketone had LC 50 values of 417.4, 658.2, and 547.3 μg/l, respectively. The essential oil also exhibited contact toxicity against L. bostrychophila with an LC 50 value of 145.5 μg/cm 2 . ( R )-Carvone, dehydroelsholtzia ketone, and elsholtzia ketone exhibited acute toxicity against the booklice with LC 50 values of 57.0, 151.5, and 194.1 μg/cm 2 , respectively. The results indicated that the essential oil and the isolated constituents have potential for the development into natural insecticides/fumigants for the control of insects in stored grains.

Identification of Insecticidal Constituents of the Essential Oil of Acorus calamus Rhizomes against Liposcelis bostrychophila Badonnel

Xin Chao Liu,Li Gang Zhou,Zhi Long Liu,Shu Shan Du

The aim of this research was to determine the chemical composition of the essential oil ofAcorus calamusrhizomes, its insecticidal activity against the booklouse, (Liposcelis bostrychophila) and to isolate any insecticidal constituents from the essential oil. The essential oil ofA. calamusrhizomes was obtained by hydrodistillation and analyzed by GC-FID and GC-MS. A total of 32 components of the essential oil ofA. calamusrhizomes was identified and the principal compounds in the essential oil were determined to be α-asarone (50.09%), (E)-methylisoeugenol (14.01%), and methyleugenol (8.59%), followed by β-asarone (3.51%), α-cedrene (3.09%) and camphor (2.42%). Based on bioactivity-guided fractionation, the three active constituents were isolated from the essential oil and identified as methyleugenol, (E)-methylisoeugenol and α-asarone. The essential oil exhibited contact toxicity againstL. bostrychophilawith an LD50value of 100.21 µg/cm2while three constituent compounds, α-asarone, methyleugenol, and (E)-methylisoeugenol had LD50values of 125.73 µg/cm2, 103.22 µg/cm2and 55.32 µg/cm2, respectively. Methyleugenol and (E)-methylisoeugenol possessed fumigant toxicity againstL. bostrychophilaadults with LC50values of 92.21 μg/L air and 143.43 μg/L air, respectively, while the crude essential oil showed an LC50value of 392.13 μg/L air. The results indicate that the essential oil ofA. calamusrhizomes and its constituent compounds have potential for development into natural fumigants/insecticides for control of the booklice.Keywords:Acorus calamus;Liposcelis bostrychophila;fumigant;contact toxicity;essential oil composition

Isolation of Insecticidal Constituents from the Essential Oil of Ageratum houstonianum Mill. against Liposcelis bostrychophila Badonnel

Xiao Nan Lu,Xin Chao Liu,Qi Zhi Liu,Zhi Long Liu

The aim of this research was to determine chemical composition and insecticidal activities of the essential oil of Ageratum houstonianum Mill. aerial parts against booklice, Liposcelis bostrychophila Badonnel, and to isolate any insecticidal constituents from the oil. Essential oil of A. houstonianum was obtained by hydrodistillation and analyzed by GC-MS. A total of 35 components in the essential oil were identified. The major compounds were precocene II (62.68%), precocene I (13.21%), and β-caryophyllene (7.92%). Based on bioactivity-guided fractionation, precocene II and precocene I were isolated and identified as the active constituents. The essential oil exhibited contact toxicity against L. bostrychophila with an LC50 value of 50.8 g/cm2. Precocene II (LC50 = 30.4 g/cm2) exhibited stronger acute toxicity than precocene I (LC50 = 64.0 g/cm2) against the booklice. The essential oil and the two isolated constituents also possessed strong repellent activity against L. bostrychophila. The results indicated that the essential oil and its constituent compounds have potential for development into natural insecticides or repellents for control of insects in stored grains.

Identification of Insecticidal Constituents from the Essential Oil of Valeriana jatamansi Jones against Liposcelis bostrychophila Badonnel

Xin Chao Liu,Ligang Zhou,Zhi Long Liu

The aim of this research was to determine chemical composition and insecticidal activities of the essential oil of Valeriana jatamansi Jones roots against booklice, Liposcelis bostrychophila Badonnel, and to isolate insecticidal constituents from the oil. Essential oil of V. jatamansi was obtained by hydrodistillation and analyzed by GC-MS. A total of 27 components in the essential oil were identified. The major compounds were patchoulol (24.3%), α-bulnesene (13.8%), isovaleric acid (12.9%), α-guaiene (8.7%), and 3-methylvaleric acid (8.4%). Based on bioactivity-guided fractionation, isovaleric acid, 3-methylvaleric acid, and patchoulol were isolated and identified as the active constituents. The essential oil exhibited contact toxicity against L. bostrychophila with an LC50 value of 236.4  g/cm2. Patchoulol (LC50 = 61.35  g/cm2) exhibited stronger acute toxicity than 3-methylvaleric acid (LC50 = 210.69  g/cm2) against the booklice. The essential oil also possessed fumigant toxicity against L. bostrychophila with an LC50 value of 6.0 mg/L, while 3-methylvaleric acid and isovaleric acid had LC50 values of 5.53 mg/L and 5.67 mg/L against the booklice, respectively. The results indicated that the essential oil and its constituent compounds have potential to develop into natural insecticides or fumigants for control of insects in stored grains.

Evaluation of the toxicity of the essential oils of some common Chinese spices against Liposcelis bostrychophila

Na Na Zhao,Ligang Zhou,Zhi Long Liu,Shu Shan Du,Zhi Wei Deng

Fourteen essential oils of common spices in China were evaluated for insecticidal activities against the booklouse, Liposcelis bostrychophila . Five essential oils ( Allium sativum , Cinnamomum cassia , Foeniculum vulgare, Illicium verum , and Perilla frutescens ) exhibited strong contact toxicity against the booklice at a concentration of 0.16   μL/cm 2 while only C. cassia , F . vulgare and P. frutescens essential oils possessed fumigant toxicity at a concentration of 0.04   μL/L. Based on bioactivity-directed fractionation, estragole, trans -anethole and fenchone were isolated from the essential oil of F . vulgare . Estragole and trans -anethole exhibited contact toxicity against the booklouse with LD 50 values of 49.95   μg/cm 2 and 57.98   μg/cm 2 , respectively while F . vulgare essential oil had an LD 50 value of 90.36   μg/cm 2 . trans -Anethole (LC 50   =   15.96   μg/L) possessed stronger fumigant toxicity against the booklouse than fenchone (LC 50   =   73.23   μg/L), estragole (LC 50   =   160.33   μg/L) and the essential oil of F . vulgare (LC 50   =   34.07   μg/L).

Identification of Insecticidal Constituents of the Essential Oil of Curcuma wenyujin Rhizomes Active against Liposcelis bostrychophila Badonnel

Zhi Long Liu,Ligang Zhou,Shu Shan Du

The aim of this research was to determine the chemical composition and insecticidal activity of the essential oil ofCurcuma wenyujinY.H. Chen et C. Ling rhizomes against the booklouseLiposcelisbostrychophilaBadonnel and to isolate any insecticidal constituents from the essential oil. The essential oil ofC. wenyujinrhizomes was obtained by hydrodistillation and analyzed by GC-MS. A total of 43 components of the essential oil were identified and the principal compounds in the essential oil were 1,8-cineole (15.26%), camphor (10.12%), germacrone (6.86%), β-elemene (6.33%), curzerene (6.70%), and β-elemenone (5.23%). followed by curzerenone (4.52%), curdione (4.45%) and linalool (4.43%). Based on bioactivity-guided fractionation, the two main active constituents were isolated from the essential oil and identified as 1,8-cineole and camphor. The essential oil ofC. wenyujinrhizomes exhibited contact toxicity againstL. bostrychophilawith an LD50value of 208.85 µg/cm2. Camphor (LD50= 207.26 µg/cm2) exhibited stronger contact toxicity than 1,8-cineole (LD50= 1048.75 µg/cm2) against booklouse. The essential oil ofC. wenyujin(LC50= 2.76 mg/L air) also possessed fumigant toxicity againstL. bostrychophila, while the two constituents, camphor and 1,8-cineole had LC50values of 1.03 mg/L air and 1.13 mg/L air, respectively. The results indicate that the essential oil ofC. wenyujinrhizomes and its constituent compounds have potential for development as natural insecticides or fumigants for control of insects in stored grains.Keywords:Liposcelisbostrychophila;Curcuma wenyujin;contact toxicity;fumigant;essential oil composition;1,8-cineole;camphor

Repellent and Insecticidal Effects of the Essential Oil of Kaempferia galanga Rhizomes to Liposcelis bostrychophila (Psocoptera: Liposcelidae)

Liu Xin Chao,Liang Yan,Shi Wang Peng,Liu Qi Zhi,Zhou Ligang,Liu Zhi Long

The aim of this research was to determine chemical composition and repellent and insecticidal activities of the essential oil of Kaempferia galanga L. rhizomes against the booklouse, Liposcelis bostrychophila Badonnel, and to isolate insecticidal or repellent constituents from the oil. The essential oil was obtained by hydrodistillation and analyzed by gas chromatography–mass spectrometry. Twenty-eight components of the oil were identified. The major compounds in the oil were ethyl-ρ-methoxycinnamate (38.6%), ethyl cinnamate (23.2%), 1,8-cineole (11.5%), trans-cinnamaldehyde (5.3%), and borneol (5.2%). Based on bioactivity-guided fractionation, four active constituents were isolated from the oil and identified as 1,8-cineole, ethyl cinnamate, ethyl ρ-methoxycinnamate, and trans-cinnamaldehyde. The essential oil exhibited contact toxicity against the booklouse with an LC50 value of 68.6 μg/cm2. Ethyl cinnamate (LC50 = 21.4 μg/cm2) exhibited stronger contact toxicity than ethyl ρ-methoxycinnamate and trans-cinnamaldehyde (LC50 = 44.6 and 43.4 μg/cm2, respectively) while 1,8-cineole showed weak acute toxicity. The essential oil also possessed fumigant toxicity against the booklouse with a LC50 value of 1.5 mg/liter air. 1,8-Cineole and trans-cinnamaldehyde (LC50 = 1.1 and 1.3 mg/liter, respectively) possessed stronger fumigant toxicity against the booklouse than ethyl cinnamate and ethyl ρ-methoxycinnamate (LC50 = 10.2 and 10.2 mg/liter air, respectively). trans-Cinnamaldehyde was strongly repellent to booklice, whereas ethyl cinnamate and ethyl ρ-methoxycinnamate were weakly repellent and 1,8-cineole did not repel booklice. The results indicate that the essential oil and its constituent compounds have potential for development into natural insecticides or fumigants and repellents for control of insects in stored grains.

Chemical composition and insecticidal properties of the essential oil of Bidens frondosa L (Asteraceae) against booklice (Liposcelis bostrychophila)

Heng Yu Li,Xu Bo Chen,Qi Zhi Liu,Zhi Long Liu

Insecticidal activity of essential oil of Cinnamomum cassia and its main constituent, trans-Cinnamaldehyde, against the booklice, Liposcelis bostrychophila

XC Liu,J Cheng,NN Zhao,ZL Liu

Analysis of the Essential Oil of Illicium henryi Diels Root Bark and Its Insecticidal Activity against Liposcelis bostrychophila Badonnel

Xin Chao Liu,Zhi Long Liu

Water-distilled essential oil from Illicium henryi (Illiciaceae) root bark was analyzed by gas chromatography–mass spectrometry. Thirty-four compounds, accounting for 97.86% of the total oil, were identified. The main components of the essential oil of I. henryi root bark were safrole (46.12%), myristicin (20.39%), and 1,8-cineole (6.17%), followed by a-cadinol (3.784%) and linalool (3.22%). The essential oil had higher levels of phenylpropanoids (66.89%) than of monoterpenoids (14.83%) and sesquiternoids (16.14%). Three constituents were isolated from the oil based on bioactivity fractionation. The essential oil possessed fumigant toxicity against booklice ( Liposcelis bostrychophila ), with a 50% lethal concentration (LC 50 ) of 380.39 mg/liter of air, while the two isolated constituents myristicin and safrole had LC 50 s of 121.95 and 322.54 μg/liter, respectively. Another constituent, 1,8-cineole, showed weaker toxicity, with an LC 50 of 1,120.43 μg/liter. The essential oil also exhibited contact toxicity against L. bostrychophila, with an LC 50 of 96.83 μg/cm 2 . Myristicin (LC 50 , 18.74 μg/cm 2 ) and safrole (LC 50 , 69.28 μg/cm 2 ) exhibited stronger acute toxicity than 1,8-cineole (LC 50 , 1,049.41 μg/cm 2 ) against the booklice. The results indicated that the essential oil and its constituent compounds have potential for development into natural insecticides for control of psocids in stored grains.

Chemical Composition and Insecticidal Activities of the Essential Oil of Clinopodium chinense (Benth.) Kuntze Aerial Parts against Liposcelis bostrychophila Badonnel

Heng Yu Li,Xin Chao Liu,Xu Bo Chen,Qi Zhi Liu,Zhi Long Liu

Water-distilled essential oil from Clinopodium chinense (Labiatae) aerial parts at the flowering stage was analyzed by gas chromatography-mass spectrometry. Thirty-five compounds, accounting for 99.18% of the total oil, were identified, and the main components of the essential oil of C. chinense were spathulenol (18.54%), piperitone (18.9%), caryophyllene (12.04%), and bornyl acetate (8.14%). Based on bioactivity-directed fractionation, bornyl acetate, caryophyllene, and piperitone were identified from the essential oil. The essential oil possessed fumigant toxicity against booklice (Liposcelis bostrychophila) with a 50% lethal concentration (LC 50 ) value of 423.39 μg/liter, while the isolated constituents, bornyl acetate and piperitone, had LC 50 values of 351.69 and 311.12 μg/liter against booklice, respectively. The essential oil also exhibited contact toxicity against L. bostrychophila with an LC 50 value of 215.25 μg/cm 2 . Bornyl acetate, caryophyllene, and piperitone exhibited acute toxicity against booklice with LC 50 values of 321.42, 275.00, and 139.74 μg/cm 2 , respectively. The results indicated that the essential oil and its isolated constituents have potential for development into natural insecticides or fumigants for control of insects in stored grains.

Identification of Repellent and Insecticidal Constituents of the Essential Oil of Artemisia rupestris L. Aerial Parts against Liposcelis bostrychophila Badonnel

Xin Chao Liu,Yin Ping Li,He Qin Li,Zhi Wei Deng,Ligang Zhou,Zhi Long Liu,Shu Shan Du

The aim of this research was to determine the chemical composition and insecticidal and repellent activity of the essential oil ofArtemisia rupestrisL. aerial parts against the bookliceLiposcelis bostrychophilaBadonnel and isolation of insecticidal and repellent constituents from the essential oil. The essential oil ofA. rupestriswas obtained by hydrodistillation and analyzed by GC-MS. A total of 30 components of the essential oil ofA. rupestriswas identified and the principal compounds in the essential oil were α-terpinyl acetate (37.18%), spathulenol (10.65%), α-terpineol (10.09%), and linalool (7.56%), followed by 4-terpineol (3.92%) and patchoulol (3.05%). Based on bioactivity-guided fractionation, the four active constituents were isolated from the essential oil and identified as α-terpineol, α-terpinyl acetate, 4-terpineol and linalool. The essential oil ofA. rupestrisexhibited contact toxicity againstL. bostrychophilawith LD50value of 414.48 µg/cm2. α-Terpinyl acetate (LD50= 92.59 µg/cm2) exhibited stronger contact toxicity against booklice than α-terpineol (LD50= 140.30 µg/cm2), 4-terpineol (LD50= 211.35 µg/cm2), and linalool (LD50= 393.16 µg/cm2). The essential oil ofA. rupestris(LC50= 6.67 mg/L air) also possessed fumigant toxicity againstL. bostrychophilawhile the four constituents, 4-terpineol, α-terpineol, α-terpinyl acetate and linalool had LC50values of 0.34, 1.12, 1.26 and 1.96 mg/L air, respectively. α-Terpinol and α-terpinyl acetate showed strong repellency againstL. bostrychophila, while linalool and 4-terpinol exhibited weak repellency. The results indicate that the essential oil ofA. rupestrisaerial parts and its constituent compounds have potential for development into natural insecticides or fumigants as well as repellents for control of insects in stored grains.Keywords:Liposcelis bostrychophila;Artemisia rupestris;contact toxicity;fumigant toxicity;repellency;essential oil composition