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Zhi Long Liu - One of the best experts on this subject based on the ideXlab platform.

  • Identification of Insecticidal Constituents from the Essential Oil from the Aerial Parts Stachys riederi var. japonica
    MDPI AG, 2018
    Co-Authors: Meirong Quan, Qi Zhi Liu, Zhi Long Liu
    Abstract:

    The essential oil of Stachys riederi var. japonica (Family: Lamiaceae) was extracted by hydrodistillation and determined by GC and GC-MS. A total of 40 components were identified, representing 96.01% of the total oil composition. The major compounds in the essential oil were acetanisole (15.43%), anisole (9.43%), 1,8-cineole (8.07%), geraniol (7.89%), eugenol (4.54%), caryophyllene oxide (4.47%), caryophyllene (4.21%) and linalool (4.07%). Five active constituents (acetanisole, anisole, 1,8-cineole, eugenol and geraniol) were identified by bioactivity-directed fractionation. The essential oil possessed fumigant toxicity against maize weevils (Sitophilus zeamais) and booklice (Liposcelis bostrychophila), with LC50 values of 15.0 mg/L and 0.7 mg/L, respectively. Eugenol and anisole exhibited stronger fumigant toxicity than the oil against booklice. 1,8-Cineole showed stronger toxicity, and anisole as well as eugenol exhibited the same level of fumigant toxicity as the essential oil against maize weevils. The essential oil also exhibited contact toxicity against S. zeamais adults and L. bostrychophila, with LC50 values of 21.8 µg/adult and 287.0 µg/cm2, respectively. The results indicated that the essential oil of S. riederi var. japonica and its isolates show potential as fumigants, and for their contact toxicity against grain Storage Insects

  • evaluation of insecticidal activity of nardostachys jatamansi essential oil against some grain Storage Insects
    Journal of entomology and zoology studies, 2014
    Co-Authors: Xin Chao Liu, Zhi Long Liu
    Abstract:

    Water-distilled essential oil from Nardostachys jatamansi (Caprifoliaceae) roots was analyzed by gas chromatography-mass spectrometry (GC-MS). Twenty-nine compounds, accounting for 98.1% of the total oil, were identified. The main components of the essential oil of N. jatamansi were calerene (25.9%), patchouol (10.6%), α-gurjunene (7.5%), aristolone (7.1%) and β-maaliene (6.5%) followed by spathulenol (4.3%). The essential oil had higher sesquiternoids content (85.4%) than monoterpenoids (8.5%). It exhibited contact toxicity with LC50 value of 277.05 mg/cm2 and fumigant toxicity with LC50 value of 0.74 mg/l against Liposcelis bostrychophila.The oil exhibited contact toxicity against Sitophilus zeamais and Tribolium castaneum adults with LC50 values of 70.83 and 45.38 μg/adult, respectively. This oil possessed fumigant toxicity against S. zeamais and T. castaneum adults with LC50 values of 82.13 and 53.29 mg/l. The results indicate that the essential oil of N. jatamansi has potential for development into natural insecticides or fumigants for control of Insects in stored grains.

  • chemical composition and insecticidal activity of essential oil of artemisia frigida willd compositae against two grain Storage Insects
    Tropical Journal of Pharmaceutical Research, 2014
    Co-Authors: Xin Chao Liu, Tiejuan Wang, Qing Wang, Zhi Long Liu
    Abstract:

    Purpose : To investigate the chemical composition and insecticidal activity of the essential oil of the aerial parts of Artemisia frigida against maize weevils ( Sitophilus zeamais ) and booklice ( Liposcelis bostrychophila )D Methods : Steam distillation of A. frigida aerial parts was carried out in a Clavenger apparatus to extract its volatile oil content. Gas  chromatography/mass spectrometric (GC/MS) analyses (HP-5MS column) of the essential oil were performed and its contact toxicity was determined using topical application and filter paper impregnation technique while its fumigant toxicity was evaluated using sealed-space method. Results : A total of 32 components of the essential oil were identified. The principal compounds were cis-ρ-menth-2-en-1-ol (20.8%), 1,8-cineole (12.0%), borneol (10.2%), lavandulol (9.3%), camphor (6.9%), and bicyclogermacrene (5.5%). The oil exhibited contact toxicity against adult S. zeamais and L. bostrychophila with LC 50 value of 17.97 µg/adult and 254.38 µg/cm2, respectively. The essential oils also possessed fumigant toxicity against S. zeamais and L. bostrychophila with LC 50 value of 69.46 mg/L and 1.25 mg/L air. Conclusion : The study indicates that the essential oil of A. frigida has a potential to be developed to a natural fumigant/insecticide for the control of grain Storage Insects. Keywords : Artemisia frigida, Sitophilus zeamais, Liposcelis bostrychophila, Insecticidal activity, Essential oil, Cis-ρ-Menth-2-en-1-ol; 1,8-Cineole

  • composition and insecticidal activity of the essential oil of pelargonium hortorum flowering aerial parts from china against two grain Storage Insects
    Journal of Medicinal Plants Research, 2013
    Co-Authors: Xin Chao Liu, Kai Yang, Zhi Long Liu, Shu Ying Wang, Xuan Gao Wang, Jun Cheng
    Abstract:

    The aim of this research was to determine chemical composition and insecticidal activity of the essential oil of Pelargonium hortorum Bailey (Geraniaceae) flowering aerial parts against the booklouse (Liposcelis bostrychophila Badonnel) and maize weevils (Sitophilus zeamais Motschulsky). The essential oil of P. hortorum flowering aerial parts was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 36 components of the essential oil were identified. The principal compounds in the essential oil were 1,8-cineole (23.01%), α-terpineol (13.22%), α-pinene (8.13%) and camphor (8.12%) followed by 4-terpineol (4.63%), β-myrcene (4.56%) and β-caryophyllene (4.08%). The essential oil exhibited contact toxicity against L. bostrychophila and S. zeamais with LD50 values of 149.78 μg/cm2 and 14.41 µg/adult, respectively. The essential oil also possessed fumigant toxicity against L. bostrychophila and S. zeamais adults with LC50 values of 1.31 mg/L air and 7.22 mg/L air, respectively. The results indicated that the essential oil of P. hortorum showed potential in terms of contact and fumigant toxicity against grain Storage Insects. Key words: Pelargonium hortorum, Liposcelis bostrychophila, Sitophilus zeamais, contact toxicity, fumigant, essential oil composition.

  • chemical composition and insecticidal activity of the essential oil derived from phlomis umbrosa against two grain Storage Insects
    Journal of Essential Oil Bearing Plants, 2013
    Co-Authors: Sha Sha Chu, Qi Zhi Liu, Guo Huang Jiang, Zhi Long Liu
    Abstract:

    Water-distilled essential oil from Phlomis umbrosa Turcz. (Lamiaceae) flowering aerial parts was analyzed by gas chromatography-mass spectrometry (GC-MS). Forty-one compounds, accounting for 97.0 % of the oil, were identified and the main components of the essential oil of P. umbrosa flowering aerial parts were geranial (16.5 %), linalool (13.3 %), cis-geraniol (7.4 %), β-caryophyllene (6.3 %), β-myrcene (6.2 %), 1,8-cineol (5.3 %), 4-terpineol (5.1 %) and myristicin (5.0 %). The essential oil of P. umbrosa possessed contact and fumigant toxicity against two grain Storage Insects, Sitophilus zeamais and Tribolium castaneum adults (for contact toxicity LD values were 23.76 µg/adult and 10.52 µg/adult; for fumigant toxicity LC50 values were 8.15 mg/L and 5.62 mg/L air against S. zeamais and T. castaneum, respectively).

Zhi Wei Deng - One of the best experts on this subject based on the ideXlab platform.

  • chemical composition and insecticidal activity of the essential oil of illicium pachyphyllum fruits against two grain Storage Insects
    Molecules, 2012
    Co-Authors: Peng Liu, Xin Chao Liu, Zhi Long Liu, Huiwen Dong, Zhi Wei Deng
    Abstract:

    The aim of this research was to determine chemical composition and insecticidal activity of the essential oil of Illicium pachyphyllum fruits against two grain Storage Insects, Sitophilus zeamais and Tribolium castaneum, and to isolate any insecticidal constituents from the essential oil. The essential oil of I. pachyphyllum fruits was obtained by hydrodistillation and analyzed by GC-MS. A total of 36 components of the essential oil were identified, with the principal compounds in the essential oil being trans-ρ-mentha-1(7),8-dien-2-ol (24.56%), D-limonene (9.79%), caryophyllene oxide (9.32%), and cis-carveol (5.26%) followed by β-caryophyllene (4.63%) and bornyl acetate. Based on bioactivity-guided fractionation, the three active constituents were isolated and identified as trans-ρ-mentha-1(7),8-dien-2-ol, D-limonene and caryophyllene oxide. The essential oil of I. pachyphyllum fruits exhibited contact toxicity against S. zeamais and T. castaneum adults, with LD(50) values of 17.33 μg/adult and 28.94 μg/adult, respectively. trans-p-Mentha-1(7),8-dien-2-ol (LD(50) = 8.66 μg/adult and 13.66 μg/adult, respectively) exhibited stronger acute toxicity against S. zeamais and T. castaneum adults than either caryophyllene oxide (LD(50) = 34.09 μg/adult and 45.56 μg/adult) and D-limonene (LD(50) = 29.86 μg/adult and 20.14 μg/adult). The essential oil of I. pachyphyllum possessed fumigant toxicity against S. zeamais and T. castaneum adults with LC(50) values of 11.49 mg/L and 15.08 mg/L, respectively. trans-p-Mentha-1(7),8-dien-2-ol exhibited stronger fumigant toxicity against S. zeamais and T. castaneum adults, respectively, with LC(50) values of 6.01 mg/L and 8.14 mg/L, than caryophyllene oxide (LC(50) = 17.02 mg/L and 15.98 mg/L) and D-limonene (LC(50) = 33.71 mg/L and 21.24 mg/L). The results indicate that the essential oil of I. pachyphyllum fruits and its constituent compounds have potential for development into natural insecticides or fumigants for the control of Insects in stored grains.

  • essential oil composition and insecticidal activity of evodia lepta spreng merr root barks from china against two grain Storage Insects
    Journal of Medicinal Plants Research, 2012
    Co-Authors: Cai Hong Jiang, Zhi Wei Deng, Qi Zhi Liu, Zhi Long Liu
    Abstract:

    In our screening program for new agrochemicals from local wild plants and Chinese medicinal herbs, the essential oil of Evodia lepta (Rutaceae) root barks was found to possess strong insecticidal activity against the maize weevil, Sitophilus zeamais Motsch. and red flour beetle, Tribolium castaneum Herbst. Essential oil of E. lepta root barks was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 35 components of the essential oil were identified. The main components of the essential oil were α-pinene (26.68%), borneol (7.24%) and trans-pinocarveol (6.82%) followed by evodionol (4.71%), α-terpineol (4.56%) and α-campholenal (4.15%). The essential oil of E. lepta possessed strong fumigant toxicity against S. zeamais and T. castaneum adults with LC50 values of 25.05 and 12.09 mg/L air, respectively. The essential oil also showed contact toxicity against S. zeamais and T. castaneum adults with LD50values of 125.21 and 166.94 μg/adult, respectively.   Key words: Evodia lepta, Sitophilus zeamais, Tribolium castaneum, contact toxicity, fumigant, essential oil composition.

  • Chemical Composition and Insecticidal Activity Against <em>Sitophilus zeamais</em> of the Essential Oils Derived from <em>Artemisia giraldii</em> and <em>Artemisia subdigitata</em>
    MDPI AG, 2012
    Co-Authors: Zhi Long Liu, Zhi Wei Deng, Sha Sha Chu
    Abstract:

    The aim of this research was to determine the chemical composition and insecticidal activity of the essential oils derived from flowering aerial parts of <em>Artemisia giraldii </em>Pamp. and <em>A. subdigitata</em> Mattf. (Family: Asteraceae) against the maize weevil (<em>Sitophilus zeamais</em> Motsch.). Essential oils of aerial parts of <em>A. giraldii</em> and <em>A. subdigitata</em> were obtained from hydrodistillation and investigated by GC and GC-MS. A total of 48 and 33 components of the essential oils of <em>A. giraldii</em> and <em>A. subdigitata</em> were identified, respectively. The principal compounds in <em>A. giraldii</em> essential oil were β-pinene (13.18%), <em>iso</em>-elemicin (10.08%), germacrene D (5.68%), 4-terpineol (5.43%) and (<em>Z</em>)-β-ocimene (5.06%). 1,8-Cineole (12.26%) and α-curcumene (10.77%) were the two main components of the essential oil of <em>A. subdigitata</em>, followed by β-pinene (7.38%), borneol (6.23%) and eugenol (5.87%). The essential oils of <em>A. giraldii</em> and <em>A. subdigitata</em> possessed fumigant toxicity against the maize weevils with LC<sub>50</sub> values of 6.29 and 17.01 mg/L air, respectively. The two essential oils of <em>A. giraldii</em> and <em>A. subdigitata</em> also exhibited contact toxicity against <em>S. zeamais</em> adults with LD<sub>50</sub> values of 40.51 and 76.34 µg/adult, respectively. The results indicated that the two essential oils show potential in terms of fumigant and contact toxicity against grain Storage Insects

  • feeding deterrents against two grain Storage Insects from euphorbia fischeriana
    Molecules, 2011
    Co-Authors: Zhu Feng Geng, Zhi Long Liu, Cheng Fang Wang, Qi Zhi Liu, Sheng Min Shen, Zi Mu Liu, Zhi Wei Deng
    Abstract:

    The screening of several Chinese medicinal herbs for insecticidal principles showed that Euphorbia fischeriana roots possessed significant feeding deterrent activity against two stored-product Insects (Tribolium castaneum and Sitophilus zeamais). From ethanol extract, four feeding deterrents were isolated by bioassay-guided fractionation. The compounds were identified as jolkinolide B, 12-deoxyphorbol 13-(9Z)-octadecenoate 20-acetate, 17-hydroxyjolkinolide A and B on the basis of their phytochemical and spectral data. Jolkinolide B and 17-hydroxyjolkinolide B possessed strong feeding deterrent activities against S. zeamais (EC₅₀ = 342.1 and 543.9 ppm, respectively) and T. castaneum adults (E₅₀ = 361.4 and 551.5 ppm, respectively). 17-Hydroxyjolkinolide A and 12-deoxyphorbol 13-(9Z)-octadecenoate 20-acetate A also exhibited feeding deterrent activity against the two grain Storage Insects with EC₅₀ values of 631.9 and 884.3 ppm for S. zeamais and 656.5 and 1058.4 ppm for T. castaneum adults.

  • insecticidal activity of essential oil of carum carvi fruits from china and its main components against two grain Storage Insects
    Molecules, 2010
    Co-Authors: Rui Fang, Cai Hong Jiang, Xiu Yi Wang, Hai Ming Zhang, Zhi Long Liu, Ligang Zhou, Zhi Wei Deng
    Abstract:

    During our screening program for agrochemicals from Chinese medicinal herbs and wild plants, the essential oil of Carum carvi fruits was found to possess strong contact toxicity against Sitophilus zeamais and Tribolium castaneum adults, with LD50 values of 3.07 and 3.29 mg/adult, respectively, and also showed strong fumigant toxicity against the two grain Storage Insects with LC50 values of 3.37 and 2.53 mg/L, respectively. The essential oil obtained by hydrodistillation was investigated by GC and GC-MS. The main components of the essential oil were identified to be (R)-carvone (37.98%) and D-limonene (26.55%) followed by α-pinene (5.21), cis-carveol (5.01%) and b-myrcene (4.67%). (R)-Carvone and D-limonene were separated and purified by silica gel column chromatography and preparative thin layer chromatography, and further identified by means of physicochemical and spectrometric analysis. (R)-Carvone and D-limonene showed strong contact toxicity against S. zeamais (LD50 = 2.79 and 29.86 mg/adult) and T. castaneum (LD50 = 2.64 and 20.14 mg/adult). (R)-Carvone and D-limonene also possessed strong fumigant toxicity against S. zeamais (LC50 = 2.76 and 48.18 mg/L) and T. castaneum adults (LC50 = 1.96 and 19.10 mg/L).

Rui Fang - One of the best experts on this subject based on the ideXlab platform.

  • insecticidal activity of essential oil of carum carvi fruits from china and its main components against two grain Storage Insects
    Molecules, 2010
    Co-Authors: Rui Fang, Cai Hong Jiang, Xiu Yi Wang, Hai Ming Zhang, Zhi Long Liu, Ligang Zhou, Zhi Wei Deng
    Abstract:

    During our screening program for agrochemicals from Chinese medicinal herbs and wild plants, the essential oil of Carum carvi fruits was found to possess strong contact toxicity against Sitophilus zeamais and Tribolium castaneum adults, with LD50 values of 3.07 and 3.29 mg/adult, respectively, and also showed strong fumigant toxicity against the two grain Storage Insects with LC50 values of 3.37 and 2.53 mg/L, respectively. The essential oil obtained by hydrodistillation was investigated by GC and GC-MS. The main components of the essential oil were identified to be (R)-carvone (37.98%) and D-limonene (26.55%) followed by α-pinene (5.21), cis-carveol (5.01%) and b-myrcene (4.67%). (R)-Carvone and D-limonene were separated and purified by silica gel column chromatography and preparative thin layer chromatography, and further identified by means of physicochemical and spectrometric analysis. (R)-Carvone and D-limonene showed strong contact toxicity against S. zeamais (LD50 = 2.79 and 29.86 mg/adult) and T. castaneum (LD50 = 2.64 and 20.14 mg/adult). (R)-Carvone and D-limonene also possessed strong fumigant toxicity against S. zeamais (LC50 = 2.76 and 48.18 mg/L) and T. castaneum adults (LC50 = 1.96 and 19.10 mg/L).

  • insecticidal activity of essential oil of carum carvi fruits from china and its main components against two grain Storage Insects
    Molecules, 2010
    Co-Authors: Rui Fang, Cai Hong Jiang, Xiu Yi Wang, Hai Ming Zhang, Zhi Long Liu, Ligang Zhou, Zhi Wei Deng
    Abstract:

    Abstract: During our screening program for agrochemicals from Chinese medicinal herbs and wild plants, the essential oil of Carum carvi fruits was found to possess strong contact toxicity against Sitophilus zeamais and Tribolium castaneum adults, with LD 50 values of 3.07 and 3.29 g/adult, respectively, and also showed strong fumigant toxicity against the two grain Storage Insects with LC 50 values of 3.37 and 2.53 mg/L, respectively. The essential oil obtained by hydrodistillation was investigated by GC and GC-MS. The main components of the essential oil were identified to be ( R )-carvone (37.98%) and D- limonene (26.55%) followed by α-pinene (5.21), cis -carveol (5.01%) and -myrcene (4.67%). ( R )-Carvone and D- limonene were separated and purified by silica gel column chromatography and preparative thin layer chromatography, and further identified by means of physicochemical and spectrometric analysis. ( R )-Carvone and D- limonene showed strong contact toxicity against S. zeamais

Qi Zhi Liu - One of the best experts on this subject based on the ideXlab platform.

  • Identification of Insecticidal Constituents from the Essential Oil from the Aerial Parts Stachys riederi var. japonica
    MDPI AG, 2018
    Co-Authors: Meirong Quan, Qi Zhi Liu, Zhi Long Liu
    Abstract:

    The essential oil of Stachys riederi var. japonica (Family: Lamiaceae) was extracted by hydrodistillation and determined by GC and GC-MS. A total of 40 components were identified, representing 96.01% of the total oil composition. The major compounds in the essential oil were acetanisole (15.43%), anisole (9.43%), 1,8-cineole (8.07%), geraniol (7.89%), eugenol (4.54%), caryophyllene oxide (4.47%), caryophyllene (4.21%) and linalool (4.07%). Five active constituents (acetanisole, anisole, 1,8-cineole, eugenol and geraniol) were identified by bioactivity-directed fractionation. The essential oil possessed fumigant toxicity against maize weevils (Sitophilus zeamais) and booklice (Liposcelis bostrychophila), with LC50 values of 15.0 mg/L and 0.7 mg/L, respectively. Eugenol and anisole exhibited stronger fumigant toxicity than the oil against booklice. 1,8-Cineole showed stronger toxicity, and anisole as well as eugenol exhibited the same level of fumigant toxicity as the essential oil against maize weevils. The essential oil also exhibited contact toxicity against S. zeamais adults and L. bostrychophila, with LC50 values of 21.8 µg/adult and 287.0 µg/cm2, respectively. The results indicated that the essential oil of S. riederi var. japonica and its isolates show potential as fumigants, and for their contact toxicity against grain Storage Insects

  • chemical composition and insecticidal activity of the essential oil derived from phlomis umbrosa against two grain Storage Insects
    Journal of Essential Oil Bearing Plants, 2013
    Co-Authors: Sha Sha Chu, Qi Zhi Liu, Guo Huang Jiang, Zhi Long Liu
    Abstract:

    Water-distilled essential oil from Phlomis umbrosa Turcz. (Lamiaceae) flowering aerial parts was analyzed by gas chromatography-mass spectrometry (GC-MS). Forty-one compounds, accounting for 97.0 % of the oil, were identified and the main components of the essential oil of P. umbrosa flowering aerial parts were geranial (16.5 %), linalool (13.3 %), cis-geraniol (7.4 %), β-caryophyllene (6.3 %), β-myrcene (6.2 %), 1,8-cineol (5.3 %), 4-terpineol (5.1 %) and myristicin (5.0 %). The essential oil of P. umbrosa possessed contact and fumigant toxicity against two grain Storage Insects, Sitophilus zeamais and Tribolium castaneum adults (for contact toxicity LD values were 23.76 µg/adult and 10.52 µg/adult; for fumigant toxicity LC50 values were 8.15 mg/L and 5.62 mg/L air against S. zeamais and T. castaneum, respectively).

  • essential oil composition and insecticidal activity of evodia lepta spreng merr root barks from china against two grain Storage Insects
    Journal of Medicinal Plants Research, 2012
    Co-Authors: Cai Hong Jiang, Zhi Wei Deng, Qi Zhi Liu, Zhi Long Liu
    Abstract:

    In our screening program for new agrochemicals from local wild plants and Chinese medicinal herbs, the essential oil of Evodia lepta (Rutaceae) root barks was found to possess strong insecticidal activity against the maize weevil, Sitophilus zeamais Motsch. and red flour beetle, Tribolium castaneum Herbst. Essential oil of E. lepta root barks was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 35 components of the essential oil were identified. The main components of the essential oil were α-pinene (26.68%), borneol (7.24%) and trans-pinocarveol (6.82%) followed by evodionol (4.71%), α-terpineol (4.56%) and α-campholenal (4.15%). The essential oil of E. lepta possessed strong fumigant toxicity against S. zeamais and T. castaneum adults with LC50 values of 25.05 and 12.09 mg/L air, respectively. The essential oil also showed contact toxicity against S. zeamais and T. castaneum adults with LD50values of 125.21 and 166.94 μg/adult, respectively.   Key words: Evodia lepta, Sitophilus zeamais, Tribolium castaneum, contact toxicity, fumigant, essential oil composition.

  • chemical composition and toxicity of the essential oil of cayratia japonica against two grain Storage Insects
    Journal of Essential Oil Research, 2012
    Co-Authors: Zhi Long Liu, Kai Yang, Qi Zhi Liu, Fan Huang, Ligang Zhou
    Abstract:

    During our screening program for new agrochemicals from Chinese medicinal herbs, essential oil of Cayratia japonica aerial parts was found to possess strong insecticidal activities against Sitophilus zeamais and Tribolium castaneum. A total of 37 components of the essential oil were identified by gas chromatography (GC) and GC–mass spectrometry (GC–MS). Linalool (19.4%), trans-α-ionene (11.4%), α-terpineol (7.9%), dihydroactinolide (7.8%) and geranial (5.8%) were the main components of the essential oil. The essential oil exhibited strong fumigant toxicity against S. zeamais and T. castaneum adults with LC50 values of 10.05 and 15.67 mg/L air, respectively. Cayratia japonica essential oil also possessed contact toxicity against S. zeamais and T. castaneum adults with LD50 values of 32.06 and 44.49 mg/adult, respectively. The essential oil C. japonica may have potential to be developed as a new natural fumigant/insecticide for the control of stored-product Insects.

  • chemical composition and toxicity of essential oil of boenninghausenia sessilicarpa rutaceae against two grain Storage Insects
    Journal of Medicinal Plants Research, 2012
    Co-Authors: Zhi Long Liu, Kai Yang, Sha Sha Chu, Shao Liang Liu, Qi Zhi Liu
    Abstract:

    The aim of this research was to determine acute toxicity of the essential oil derived from aerial parts of Boenninghausenia sessilicarpa Levl. (Rutaceae) against two grain Storage Insects, maize weevils ( Sitophilus zeamais Motsch.) and red flour beetles ( Tribolium castaneum Herbst.). Essential oil of B. sessilicarpa aerial parts was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 42 components of the essential oil were identified. The principal compounds in the essential oil were αcadinol (11.97%), carvacrol (8.77%), germacrene D (6.17%), o-cymene (6.13%), 4-terpineol (5.71%), and αpinene (5.53%). The essential oil exhibited strong contact toxicity against S. zeamais and T. castaneum adults with LD 50 value of 15.25 and 6.02 µg/adult, respectively. The results indicated that the essential oil B. sessilicarpa aerial parts showed potential in terms of acute toxicity against grain Storage Insects.

Ligang Zhou - One of the best experts on this subject based on the ideXlab platform.

  • chemical composition and toxicity of the essential oil of cayratia japonica against two grain Storage Insects
    Journal of Essential Oil Research, 2012
    Co-Authors: Zhi Long Liu, Kai Yang, Qi Zhi Liu, Fan Huang, Ligang Zhou
    Abstract:

    During our screening program for new agrochemicals from Chinese medicinal herbs, essential oil of Cayratia japonica aerial parts was found to possess strong insecticidal activities against Sitophilus zeamais and Tribolium castaneum. A total of 37 components of the essential oil were identified by gas chromatography (GC) and GC–mass spectrometry (GC–MS). Linalool (19.4%), trans-α-ionene (11.4%), α-terpineol (7.9%), dihydroactinolide (7.8%) and geranial (5.8%) were the main components of the essential oil. The essential oil exhibited strong fumigant toxicity against S. zeamais and T. castaneum adults with LC50 values of 10.05 and 15.67 mg/L air, respectively. Cayratia japonica essential oil also possessed contact toxicity against S. zeamais and T. castaneum adults with LD50 values of 32.06 and 44.49 mg/adult, respectively. The essential oil C. japonica may have potential to be developed as a new natural fumigant/insecticide for the control of stored-product Insects.

  • insecticidal activity of essential oil of carum carvi fruits from china and its main components against two grain Storage Insects
    Molecules, 2010
    Co-Authors: Rui Fang, Cai Hong Jiang, Xiu Yi Wang, Hai Ming Zhang, Zhi Long Liu, Ligang Zhou, Zhi Wei Deng
    Abstract:

    During our screening program for agrochemicals from Chinese medicinal herbs and wild plants, the essential oil of Carum carvi fruits was found to possess strong contact toxicity against Sitophilus zeamais and Tribolium castaneum adults, with LD50 values of 3.07 and 3.29 mg/adult, respectively, and also showed strong fumigant toxicity against the two grain Storage Insects with LC50 values of 3.37 and 2.53 mg/L, respectively. The essential oil obtained by hydrodistillation was investigated by GC and GC-MS. The main components of the essential oil were identified to be (R)-carvone (37.98%) and D-limonene (26.55%) followed by α-pinene (5.21), cis-carveol (5.01%) and b-myrcene (4.67%). (R)-Carvone and D-limonene were separated and purified by silica gel column chromatography and preparative thin layer chromatography, and further identified by means of physicochemical and spectrometric analysis. (R)-Carvone and D-limonene showed strong contact toxicity against S. zeamais (LD50 = 2.79 and 29.86 mg/adult) and T. castaneum (LD50 = 2.64 and 20.14 mg/adult). (R)-Carvone and D-limonene also possessed strong fumigant toxicity against S. zeamais (LC50 = 2.76 and 48.18 mg/L) and T. castaneum adults (LC50 = 1.96 and 19.10 mg/L).

  • insecticidal activity of essential oil of carum carvi fruits from china and its main components against two grain Storage Insects
    Molecules, 2010
    Co-Authors: Rui Fang, Cai Hong Jiang, Xiu Yi Wang, Hai Ming Zhang, Zhi Long Liu, Ligang Zhou, Zhi Wei Deng
    Abstract:

    Abstract: During our screening program for agrochemicals from Chinese medicinal herbs and wild plants, the essential oil of Carum carvi fruits was found to possess strong contact toxicity against Sitophilus zeamais and Tribolium castaneum adults, with LD 50 values of 3.07 and 3.29 g/adult, respectively, and also showed strong fumigant toxicity against the two grain Storage Insects with LC 50 values of 3.37 and 2.53 mg/L, respectively. The essential oil obtained by hydrodistillation was investigated by GC and GC-MS. The main components of the essential oil were identified to be ( R )-carvone (37.98%) and D- limonene (26.55%) followed by α-pinene (5.21), cis -carveol (5.01%) and -myrcene (4.67%). ( R )-Carvone and D- limonene were separated and purified by silica gel column chromatography and preparative thin layer chromatography, and further identified by means of physicochemical and spectrometric analysis. ( R )-Carvone and D- limonene showed strong contact toxicity against S. zeamais