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Headspace gas chromatography-mass spectrometry: a fast approach to the identification and determination of 2-alkyl-3- methoxypyrazine pheromones in ladybugs.
Analyst. 2005 Feb; 130(2):152-5.A

Abstract

Static headspace sampling technique coupled with gas chromatography and mass spectrometry was used to investigate the presence of volatile 2-alkyl-3-methoxypyrazines in three different species of ladybugs of the Coccinellidae family. The species investigated were Coccinella septempunctata, Harmonia axyridis and Hippodemia convergens. 2-isopropyl-3-methoxypyrazine (IPMP) was identified in all three species with detectable levels of 2-sec-butyl-3-methoxypyrazine (SBMP) and 3-isobutyl-2-methoxypyrazines (IBMP) in only Hippodemia convergens and Harmonia axyridis species. Relative amounts of 2-alkyl-3-methoxypyrazines based on body mass showed that Hippodemia convergens had the highest levels of all three methoxypyrazines and Coccinella septempunctata the least.

Authors+Show Affiliations

Chemistry Department, Brock University, St. Catharines, Ontario, L2S 3A1, Canada.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15665967

Citation

Cudjoe, Erasmus, et al. "Headspace Gas Chromatography-mass Spectrometry: a Fast Approach to the Identification and Determination of 2-alkyl-3- Methoxypyrazine Pheromones in Ladybugs." The Analyst, vol. 130, no. 2, 2005, pp. 152-5.
Cudjoe E, Wiederkehr TB, Brindle ID. Headspace gas chromatography-mass spectrometry: a fast approach to the identification and determination of 2-alkyl-3- methoxypyrazine pheromones in ladybugs. Analyst. 2005;130(2):152-5.
Cudjoe, E., Wiederkehr, T. B., & Brindle, I. D. (2005). Headspace gas chromatography-mass spectrometry: a fast approach to the identification and determination of 2-alkyl-3- methoxypyrazine pheromones in ladybugs. The Analyst, 130(2), 152-5.
Cudjoe E, Wiederkehr TB, Brindle ID. Headspace Gas Chromatography-mass Spectrometry: a Fast Approach to the Identification and Determination of 2-alkyl-3- Methoxypyrazine Pheromones in Ladybugs. Analyst. 2005;130(2):152-5. PubMed PMID: 15665967.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Headspace gas chromatography-mass spectrometry: a fast approach to the identification and determination of 2-alkyl-3- methoxypyrazine pheromones in ladybugs. AU - Cudjoe,Erasmus, AU - Wiederkehr,Tara B, AU - Brindle,Ian D, Y1 - 2004/12/08/ PY - 2005/1/25/pubmed PY - 2005/9/15/medline PY - 2005/1/25/entrez SP - 152 EP - 5 JF - The Analyst JO - Analyst VL - 130 IS - 2 N2 - Static headspace sampling technique coupled with gas chromatography and mass spectrometry was used to investigate the presence of volatile 2-alkyl-3-methoxypyrazines in three different species of ladybugs of the Coccinellidae family. The species investigated were Coccinella septempunctata, Harmonia axyridis and Hippodemia convergens. 2-isopropyl-3-methoxypyrazine (IPMP) was identified in all three species with detectable levels of 2-sec-butyl-3-methoxypyrazine (SBMP) and 3-isobutyl-2-methoxypyrazines (IBMP) in only Hippodemia convergens and Harmonia axyridis species. Relative amounts of 2-alkyl-3-methoxypyrazines based on body mass showed that Hippodemia convergens had the highest levels of all three methoxypyrazines and Coccinella septempunctata the least. SN - 0003-2654 UR - https://www.unboundmedicine.com/medline/citation/15665967/Headspace_gas_chromatography_mass_spectrometry:_a_fast_approach_to_the_identification_and_determination_of_2_alkyl_3__methoxypyrazine_pheromones_in_ladybugs_ DB - PRIME DP - Unbound Medicine ER -