Quality Characteristics of Some Essential Oil Plants Grown Under Conventional and Organic Farming Conditions”


Karik Ü., Tunçtürk M. , Çınar O.

The Sixth International Mediterranean Symposium on Medicinal and Aromatic Plants, İzmir, Turkey, 15 - 17 October 2020, pp.44

  • Publication Type: Conference Paper / Summary Text
  • City: İzmir
  • Country: Turkey
  • Page Numbers: pp.44

Abstract

This study was carried out to determine the quality characteristics of some medicinal and aromatic

plants grown under conventional and organic farming conditions. In the study, Anatolian sage (Salvia

fruticosa Mill.), Turkish oregano (Origanum onites L.), lavandin (Lavandula xintermedia L.),

lavander (Lavandula angustifolia L.), spearmint (Mentha spicata L.) and pepermint (Mentha piperita

L.) species are used as a plant material. Among the plant materials included in the study, organic

farming ones were grown in accordance with the principles in the organic farming regulation. Plants

were harvested in full bloom, dried in an oven, and their essential oils were extracted by water

distillation. The chemical composition of the essential oils obtained was analyzed by GC/MS.

Essential oil yield in conventional and organic farming conditions varied between, 3,2% -2,8% in

Anatolian sage, 3,8% -3,5% in Turkish oregano, 6,3%-5,4% in lavandin, 3,4%-3,1%, in lavander,

2,2%-1,7% in spearmint and 2,4%-2,1% in pepermint respectively. In the content analysis of essential

oils, 21 components in Anatolian sage, 24 in Turkish oregano, 16 in lavandin, 20 in lavander, 19 in

spearmint and 19 in pepermint were determined. The main components and ratios of essential oils in

samples obtained from conventional and organic agriculture; 1,8-cineole 42,92%-44,52% in

Anatolian sage, 46,84-42,47% carvacrol in Turkish oregano, linalool 34,69%- 35,84%, in lavandin,

linalyl-acetate 38,03-36,28% in lavander, carvone 59,51-58,64% in spearmint and menthone 39,32-

40,86% in peppermint respectively. As a result, it was determined that the essential oil yields of all

the species studied were decreased in organic farming conditions. However, no significant change

occurred in the proportions of the main components in essential oils in organic and conventional

agricultural conditions.