Response surfaces of hazelnut oil yield in supercritical carbon dioxide

Ozkal S., Yener M. E. , Salgin U., Mehmetoglu U.

EUROPEAN FOOD RESEARCH AND TECHNOLOGY, cilt.220, sa.1, ss.74-78, 2005 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 220 Konu: 1
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1007/s00217-004-1013-3
  • Sayfa Sayıları: ss.74-78


Response Surface Methodology was used to determine the effects of solvent flow rate (1, 3 and 5 g/ min), pressure (300, 375 and 450 bar) and temperature (40, 50 and 60 degreesC) on hazelnut oil yield in supercritical carbon dioxide (SC-CO2). Oil yield was represented by a second order response surface equation (R-2 = 0.997) using Box-Bhenken design of experiments. Oil yield increased with increasing SC-CO2 flow rate, pressure and temperature. The maximum oil yield was predicted from the response surface equation as 0.19 g oil/g hazelnut (34% of initial oil) when 4 g hazelnut particles (particle diameter < 0.85 mm) were extracted with 5 g/min SC-CO2 flow rate at 450 bar, and 60 degreesC for 10 min. Total extraction time at these conditions was predicted to be 35 min.