The effect of different filter aid materials and winterization periods on the oxidative stability of sunflower and corn oils

GÜNÇ ERGÖNÜL P., Nergiz C.

CYTA - Journal of Food, cilt.13, sa.2, ss.174-180, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 13 Sayı: 2
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1080/19476337.2014.931889
  • Dergi Adı: CYTA - Journal of Food
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.174-180
  • Anahtar Kelimeler: free fatty acid, filter aid materials, oxidative stability, trace metals, vegetable oils, winterization
  • Manisa Celal Bayar Üniversitesi Adresli: Evet

Özet

The effects of different filter aid materials at different ratios (0.3% or 0.6%, w/w) and three different (6 h, 12 h, 24 h) winterization times, on free fatty acid (FFA), peroxide, iodine, p-anisidine and conjugated diene values and copper (Cu), iron (Fe), nickel (Ni) levels of sunflower and corn oils were studied. FFA amounts of both sunflower and corn oils showed no significant changes during winterization process. However, peroxide, p-anisidine and conjugated diene values increased during winterization due to the holding time in winterized tank and atmospheric conditions. Iodine values of oils increased as unsaturation rises. In respect of trace metals, the increase in copper and iron levels was found higher than the increase of nickel level.