Akademik Veri Yönetim Sistemi
International Journal of Agriculture, Forestry and Life Sciences, cilt.5, sa.1, ss.94-100, 2021 (Hakemli Dergi)
In this study, six Turkish local walnuts (Juglans regia L.) cultivars grown in the Pozantı district of Adana province of Turkey
were characterized in terms of fat, fatty acids, and tocopherols content. Total lipid and fatty acid content were analysed using
Gas Chromatography Flame Ionization Technique (GC/FID) while, tocopherol content was analysed by High-Performance
Liquid Chromatography (HPLC) technique. The total fatty acid levels varied between 62.54% (Yalova-4) to 70.20% (Yalova2). Three saturated fatty acids were identified and quantified as stearic acid ranging from 1.96 to 3.25%, myristic acid ranging
from 0.05 to 0.07% and palmitic acid ranging from 5.98 to 6.84%. As for the unsaturated fatty acids; linoleic acid which a
predominant fatty acid (54.13-62.51%), followed by oleic acid (18.82-27.09%), a-linoleic acid (9.83-12.7%), and palmitoleic
acid (0.04-0.09%) were detected respectively. In this study, the spectrum of tocopherols comprised of three isoforms; α, β, γ
were also identified and quantified by HPLC technique. However, δ-tocopherol isoform was not detected. In the all examined
walnut cultivars, the total tocopherol content varied from 67.18 (Bilecik) to 173.81 µg/g (Yalova-2). γ-tocopherol, a-tocopherol
and β- tocopherol content were found between 61.1 to 164.51 µg/g, 5.43 to 11.53 µg/g and 0.60 to 5.82 µg/g, respectively.
Yalova-2 was the most promising cultivar in terms of total oil content and total tocopherol content.