Assessment of Some Compositional and Chemical Properties of Oils Obtained from Groundnut Varieties Grown in Osmaniye Conditions

Yıl 2019, Cilt: 29 Sayı: 1, 52 - 60, 29.03.2019

Okşan Uçkun , İhsan Karabulut , Gökhan Durmaz

https://doi.org/10.29133/yyutbd.448513

Cited By: 3

Öz

The
fat content and fatty acid composition, oxidative stability, tocopherol
composition, antioxidant capacity and carotenoid content of 12 different
domestic and imported groundnut varieties grown in Osmaniye conditions were
determined. Cultivars were found to contain oil ranging from 45.5% to 51.6% and
Halisbey was found to be the richest in oil. Brantley and Batem cultivars were
found to be high oleic acid varieties and have higher oxidative stability. It
has been determined that the oil samples are rich in a and g-tocopherols and other tocopherol isomers were at low
concentrations. In the antioxidant capacity test using the FD-ABTS method, parallel
results were obtained with the total tocopherol content and the highest
antioxidant capacity was measured in Georgia Green variety. It has been
determined that the carotenoid content of the groundnut oil varies between 1.66
and 2.88 mg/kg.

Anahtar Kelimeler

Oxidative stability, Tocopherols, Oil, Groundnut

Osmaniye Koşullarında Yetiştirilen Yerfıstığı Çeşitlerinden Elde Edilen Yağların Bazı Bileşimsel ve Kimyasal Özellikleri

Öz

Osmaniye koşullarında
yetiştirilen yerli ve yabancı kökenli 12 farklı yerfıstığı çeşidinin yağ oranı
ve bu yağların yağ asidi bileşimi, oksidatif stabilitesi, tokoferol bileşimi,
antioksidan kapasitesi ve karotenoid miktarı belirlenmiştir. Çeşitlerin % 45.5-51.6
arasında değişen oranlarda yağ içerdiği ve en yüksek yağ oranına sahip çeşidin
Halisbey olduğu belirlenmiştir. Çalışılan çeşitlerden Brantley ve Batem isimli çeşitlerin
yüksek oleik asitli çeşitler olduğu ve oldukça yüksek oksidatif stabiliteye
sahip oldukları saptanmıştır. Yerfıstığı yağlarının a ve g-tokoferol bakımından zengin
olduğu, diğer tokoferol vitamerlerinin ise düşük düzeyde bulunduğu
belirlenmiştir. FD-ABTS metoduyla yapılan antioksidan kapasite testinde, toplam
tokoferol miktarına paralel sonuçlar elde edilmiş ve en yüksek antioksidan
kapasiteye sahip olan çeşidin Georgia Green olduğu belirlenmiştir. Kullanılan
yerfıstığı yağlarının karotenoid içeriğinin ise 1.66 ile 2.88 mg/kg arasında
değiştiği belirlenmiştir.

Anahtar Kelimeler

Oksidatif stabilite, Tokoferol, Yağ, Yerfıstığı

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