TOMBUL FINDIK ÇEŞİDİNDE YAĞ OKSİDASYONUNU AZALTACAK KURUTMA YÖNTEMİNİN BELİRLENMESİ

Abstract

Bu çalışma güneşte kurutma (beton harman ve çimen harman; BH, ÇH, sırasıyla) ve suni kurutma (SK) yöntemlerinin depolama süresince fındığın kimyasal özellikleri üzerine etkisini belirlemek amacıyla yürütülmüştür. Protein oranı, yağ oranı, nem oranı, su aktivitesi, aflatoksin, yağ asitleri kompozisyonu, toplam yağ asitleri ve yağ oksidasyon parametreleri 2014-2016 yılları arasında 18 ay ortam şartlarında (20–25°C ve %70–90 nisbi nem) muhafaza süresince incelenmiştir. Çalışma sonucunda tekli doymamış yağ asitleri (TDY) ana grubu oluşturmuş (%81.36–84.46), onu çoklu doymamış yağ asitleri (%9.41–12.18) ve doymuş yağ asitleri (%5.74–7.31) izlemiştir. SK ortamında güneşte kurutmaya göre daha yüksek TDY (%84.46) tespit edilmiştir. Ayrıca SK ortamında daha düşük iyot değeri ve daha yüksek oleik/linoleik değeri bulunmuştur. Bu yüzden SK “Tombul” fındık çeşidinin kurutulması için yeni bir potansiyel olabilir. 

Keywords

• Depolama,kurutma,yağ asitleri kompozisyonu,yağ oksidasyonu

DETERMINATION OF DRYING METHOD FOR REDUCING OIL OXIDATION OF TOMBUL (CV) HAZELNUT

Abstract

This work was carried out to evaluate the effects of sun–dried (concrete ground and grass ground; CG, GG, respectively) and artificial dried (DM) on chemical properties of hazelnut during storage. The following parameters were measured; protein, lipid and moisture content, water activity, aflatoxin, fatty acid composition, total fatty acids, and oil oxidation along 18 months storage (2014–2016) at 20–25 °C and 70–90% relative humidity. The results showed that monounsaturated fatty acid (MUFA) was the main fatty acid group (81.36–84.46%) followed by polyunsaturated (9.41–12.18%) and saturated fatty acids (5.74–7.31%). Samples dried in DM had more MUFA (84.46%) than those sun–dried samples. Furthermore, the lowest iodine value and the highest oleic/linoleic acidity ratio were found in DM. Hence, DM could be as the new potential for Tombul (cv) hazelnut drying.

Keywords

• Storage,drying,fatty acid composition,oil oxidation

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