Antioxidant activity, volatile compounds and fatty acid compositions of &lt;em&gt;Cephalaria syriaca&lt;/em&gt; seeds obtained from different regions in Turkey

C Kavak,A BaştüRk

doi:10.3989/gya.0913192

Abstract

Crude oil yield, fatty acid composition, volatile compounds, antioxidant activity and some characteristics of Cephalaria syriaca seeds collected from different locations in Turkey were studied. Antioxidant capacity was determined by DDPH and ABTS tests and the results were in the range of 18.8-67.3% and 0.0-41.8 mmol Trolox eq g-1 DW, respectively; while total phenolic contents were between 4339-11907 mg GAE kg-1. The average α-tocopherol content was found to be in the range of 54-467 mg kg-1. Oil yield was between 11.2-24.0%. Oleic and linoleic acids were the predominant fatty acids. A total of 30 different volatile compounds were identified in the samples, mostly consisting of alcohols and aldehydes. The results of this study showed that Cephalaria syriaca seeds can be considered as alternative raw material in the production of edible oil, and can be used as a source of natural antioxidants and food additives.

Highlights

The interest in different edible oils, including plant seeds with high nutrition value, industrial and pharmaceutical significance, has recently increased
The results obtained in this study revealed that Cephalaria syriaca L. (CS) seeds were high in oil content, varying in the range of 11.2-24.0%, which seems to be a significant source of oleic and linoleic acids
Extraction yield of the oil samples varied according to location, and CS1 and CS11 samples in particular are significantly different form all the other samples

Summary

Introduction

The interest in different edible oils, including plant seeds with high nutrition value, industrial and pharmaceutical significance, has recently increased. It has been reported that Cephalaria species have various biological properties including antibacterial, antifungal, antioxidant and cytotoxic activities (Kirmizigül et al, 1996; Mustafaeva et al, 2008; Pasi et al, 2009; Sarıkahya and Kırmızıgül, 2010). It is used in medicine, agriculture and veterinary medicine (Kayce and Kirmizigül, 2010). (CS), pelemir in Turkish, is predominantly found in the southeastern region of Turkey as a weed in cereal fields The oil of this plant seed is sometimes extracted and used in the baking industry to enhance the quality of bakery products (Yazicioğlu et al, 1978). There is no extensive study on the antioxidant activity, volatile compound or fatty acid composition of CS seeds, which are widely grown in Turkey

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