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Your search keyword '"Jun-Yu Liang"' showing total 6 results
Start Over Author "Jun-Yu Liang" Topic tribolium
6 results on '"Jun-Yu Liang"'

1. Insecticidal and acetylcholine esterase inhibition activity of

Author

Jun-Yu, Liang, Ying-Ying, Yang, Yue, An, Ya-Zhou, Shao, Chun-Yu, He, Ji, Zhang, and Ling-Yun, Jia

Subjects
Coleoptera, Lethal Dose 50, Insecticides, Sesquiterpenes, Germacrane, Tribolium, Rhododendron, Insect Repellents, Oils, Volatile, Animals, Insect Proteins, Cholinesterase Inhibitors
Abstract

In this work, we investigated the bioactivities of the essential oil (EO) extracted from the

Published
2021

2. Chemical constituents isolated from stems of

Author

Shan-Shan, Guo, Xue, Pang, Yang, Wang, Zhu-Feng, Geng, Ju-Qin, Cao, Jun-Yu, Liang, Zhi-Wei, Deng, and Shu-Shan, Du

Subjects
Cyclooctanes, Structure-Activity Relationship, Tribolium, Plant Stems, Animals, Polycyclic Compounds, Dioxoles, Feeding Behavior, Sesquiterpenes, Lignans, Triterpenes, Schisandra
Abstract

One new sesquiterpene (α-iso-cubebenol acetate

Published
2019

3. Insecticidal Activities and Chemical Composition of the Essential Oils of Ajania nitida and Ajania nematoloba from China

Author

Yuan, Li, Shan-Shan, Yan, Jing-Jing, Wang, Ling-Yan, Li, Ji, Zhang, Kui, Wang, and Jun-Yu, Liang

Subjects
Coleoptera, China, Insecticides, Tribolium, Insect Repellents, Oils, Volatile, Animals, Plant Oils, Asteraceae
Abstract

In this work, we investigated insecticidal and repellent activities of the essential oils extracted from Ajania nitida and Ajania nematoloba against Tribolium castaneum and Lasioderma serricorne adults. The components of essential oils were analyzed by GC-MS. The main components of A. nitida oil were camphor (20.76%), thujone (18.64%), eucalyptol (13.42%), borneol (8.32%) and those of A. nematoloba oil were β-pinene (34.72%), eucalyptol (24.97%) and verbenol (20.39%). The results showed that the two essential oils possessed insecticidal and repellent activities against two species of insects. A. nitida oil possessed contact and fumigant toxicity against T. castaneum (LD

Published
2018

4. Bioactivities and Chemical Constituents of Essential Oil Extracted from Artemisia anethoides Against Two Stored Product Insects

Author

Jun-Yu, Liang, Wen-Ting, Wang, Yan-Fei, Zheng, Di, Zhang, Jun-Long, Wang, Shan-Shan, Guo, Wen-Juan, Zhang, Shu-Shan, Du, and Ji, Zhang

Subjects
Coleoptera, Insecticides, Tribolium, Artemisia, Dose-Response Relationship, Drug, Oils, Volatile, Animals
Abstract

The chemical constituents of the essential oil extracted from Artemisia anethoides and the bioactivities of essential oil against Tribolium castaneum and Lasioderma serricorne were investigated. The main components of the essential oil were 1,8-cineole (36.54%), 2-isopropyl-5-methyl-3-cyclohexen-1-one (10.40%), terpinen-4-ol (8.58%), 2-isopropyltoluene (6.20) and pinocarveol (5.08%). The essential oil of A. anethoides possessed contact and fumigant toxicities against T. castaneum adults (LD

Published
2016

5. Essential Oil of Amomum maximum Roxb. and Its Bioactivities against Two Stored-Product Insects

Author

Shan-Shan, Guo, Chun-Xue, You, Jun-Yu, Liang, Wen-Juan, Zhang, Kai, Yang, Zhu-Feng, Geng, Cheng-Fang, Wang, Shu-Shan, Du, and Ning, Lei

Subjects
Flame Ionization, Polycyclic Sesquiterpenes, China, Insecticides, Tribolium, Gas Chromatography-Mass Spectrometry, Lethal Dose 50, Bridged Bicyclo Compounds, Fumigation, Fruit, Insect Repellents, Monoterpenes, Oils, Volatile, Animals, Plant Oils, Amomum, Sesquiterpenes, Asia, Southeastern, Bicyclic Monoterpenes, Distillation
Abstract

Amomum maximum Roxb. is a perennial herb distributed in South China and Southeast Asia. The objective of this work was to analyze the chemical constituents and assess insecticidal and repellent activities of the essential oil from Amomum maximum fruits against Tribolium castaneum (Herbst) and Liposcelis bostrychophila (Badonnel). The essential oil was obtained by hydrodistillation and analyzed by gas chromatography-flame ionization detector and gas chromatography-mass spectrometry. The main components of the essential oil were identified to be β-pinene (23.39%), β-caryophyllene (16.43%), α-pinene (7.55%), sylvestrene (6.61%) and ç-cadinene (4.19%). It was found that the essential oil of A. maximum fruits possessed contact and fumigant toxicities against T. castaneum adults (LD50 = 29.57 μg/adult and LC(50) = 23.09 mg/L air, respectively) and showed contact toxicity against L. bostrychophila (LD(50) = 67.46 μg/cm(2)). Repellency of the crude oil was also evaluated. After 2 h treatment, the essential oil possessed 100% repellency at 78.63 nL/cm(2) against T. castaneum and 84% repellency at 63.17 nL/cm(2) against L. bostrychophila. The results indicated that the essential oil of A. maximum fruits had the potential to be developed as a natural insecticide and repellent for control of T. castaneum and L. bostrychophila.

Published
2015

6. Chemical Constituents of Murraya tetramera Huang and Their Repellent Activity against Tribolium castaneum.

Author

Chun-Xue You, Shan-Shan Guo, Wen-Juan Zhang, Zhu-Feng Geng, Jun-Yu Liang, Ning Lei, Shu-Shan Du, and Zhi-Wei Deng

Subjects
RED flour beetle, TRIBOLIUM, NUCLEAR magnetic resonance, REPELLENTS, GREY relational analysis
Abstract

Sixteen compounds were isolated from the leaves and stems of Murraya tetramera Huang. Based on the NMR and MS spectral results, the structures were determined. It was confirmed that the isolated compounds included three new compounds (9, 10 and 13) and one new natural product (8), which were identified asmurratetra A (9), murratetra B (10), murratetra C (13) and [2-(7-methoxy-2-oxochromen-8-yl)-3-methylbut-2-enyl]3-methylbut-2-enoate (8), respectively. Meanwhile, the repellent activity against Tribolium castaneum was investigated for 13 of these isolated compounds. The results showed that the tested compounds had various levels of repellent activity against T. castaneum. Among them, compounds 1 (4(15)-eudesmene-1β,6α-diol), 11 (isoferulic acid) and 16 (2,3-dihydroxypropyl hexadecanoate) showed fair repellent activity against T. castaneum. They might be considered as potential leading compounds for the development of natural repellents. [ABSTRACT FROM AUTHOR]

Published
2017
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