Chemical constituents, quantitative analysis and insecticidal activities of plant extract and essential oil from Origanum onites L.

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  • Ramazan Erenler*1,
  • Ibrahim Demirtas2,
  • Tunay Karan3,
  • Fatih Gul2,
  • Omer Kayir4,
  • Omer Karakoc5,
  1. Department of Chemistry, Faculty of Arts and Sciences, Gaziosmanpasa University, 60240 Tokat, Turkey
  2. Department of Chemistry, Faculty of Natural Sciences, Cankiri Karatekin University, 18200, Cankiri, Turkey
  3. Department of Biology, Faculty of Arts and Sciences, Gaziosmanpasa University, 60240 Tokat, Turkey
  4. Department of Chemistry, Scientific Technical Application and Research Center, Hitit University, 19030 Çorum, Turkey
  5. Department of Crop and Animal Protection, Yaprakli Vocational School, Cankiri Karatekin University, 18100 Cankiri, Turkey

Revised: 2018-01-16

Accepted: 2018-05-26

Published in Issue 2018-06-01

How to Cite

Erenler, R., Demirtas, I., Karan, T., Gul, F., Kayir, O., & Karakoc, O. (2018). Chemical constituents, quantitative analysis and insecticidal activities of plant extract and essential oil from Origanum onites L. Trends in Phytochemical Research, 2(2), 91-96. https://oiccpress.com/tpr/article/view/11719

PDF views: 373

Abstract

Origanum, widely used for food and pharmaceutical industry, belonging to the Lamiaceae family, is an aromatic and medicinal plant. The aerial parts of the Origanum onites L. were dried at shade and was extracted with methanol. Rosmarinic acid, gentisic acid, 4-hydroxybenzoic acid, protocatechuic acid, caffeic acid, vanillic acid, 4-hydroxylbenzaldehyde, p-cumaric acid, ferullic acid, apigenin-7-glucoside, and narigenin were found in O. onites methanol extract. Quantitative analyses of these compounds were determined by LC-TOF/MS and rosmarinic acid was the main constituent (32.05 mg/100 g dried plant). The essential oil was isolated by steam distillation and compounds were identified by GC-MS analysis. The essential oil included the carvacrol (88.71%) as a main product. p-Cymene (3.09%) was found as a second chief product. The essential oil exhibited excellent insecticidal activity on Sitophilus granaries and Sitophilus oryzae pests. However, methanol extract revealed the moderate activity on S. granarius pet.

Keywords

  • Quantitative analysis,
  • <i>Origanum onites</i>,
  • Essential oil,
  • Insecticidal activity
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