A twin-screw extruder for oil extraction: I. Direct expression of oleic sunflower seeds

作者: Corinne Dufaure , Juliette Leyris , Luc Rigal , Zéphirin Mouloungui

DOI: 10.1007/S11746-999-0206-0

关键词: Sunflower oilScrew pressExtraction (chemistry)BotanyWater contentSunflowerExtrusionChemistryOil millFood scienceSunflower seed

摘要: Lipids are traditionally removed from seeds by mechanical crushing and solvent extraction. During the process oilseed is cleaned, cracked, flaked, cooked before entering a screw press. Seventy-five percent of oil sunflower can be extracted crushing, fatty cake then contains about 15% oil. The levels remaining in reduced to less than 2% However, crude has refined as it many impurities approximately 600 ppm phosphorus. A new process, which pressed twin-screw extruder, examined here. profile was first optimized. Oleic were crushed 80% removed. resultant good quality, with acid numbers below 2 mg KOH/g total phosphorus contents 100 ppm. influence pressing temperature fresh seed moisture content determined. High low improved quality meal through solubilization its proteins alkaline water at 50°C. remained quite soluble, therefore one assume that they still relatively close their native conformation. oleaginous material extruder provides option traditional processes.

参考文章(1)
S. Isobe, F. Zuber, K. Uemura, A. Noguchi, A new twin-screw press design for oil extraction of dehulled sunflower seeds Journal of the American Oil Chemists' Society. ,vol. 69, pp. 884- 889 ,(1992) , 10.1007/BF02636338