caa a22 4500 465795625 CHVBK 20180323112037.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF02631384 doi (NATIONALLICENCE)springer-10.1007/BF02631384 Solvent extraction of the oils of rubber, melon, pumpkin and oilbean seeds [Elektronische Daten] [J. Attah, J. Ibemesi] Solvents of differing dielectric constant were used to extract oils from the seeds of: rubber [Hevea brasiliensis (Kunth) Muell. Arg.], melon [Colocynthis vulgaris Schrad], fluted pumpkin [Telfairia occidentalis Hook f.] and oilbean [Pentaclethra macrophylla Benth]. The aim was to examine the effect of solvent polarity on oil yield and oil properties. The oils were extracted under Soxhlet conditions with the following solvents: petroleum benzene (60-80°C), cyclohexane, isopropyl ether, ethyl acetate, tetrahydrofuran, propan-2-ol and acetone. The oils were characterized by acid number, iodine value and color intensity determinations. The oil yields of each seed in different solvents ranged as follows: 58.0-64.4% (pumpkin), 56.1-59.1% (melon), 40.6-48.8% (rubber) and 35.4-43.3% (oilbean). The equilibrium extracting capacity of each solvent was found to depend on two factors, namely, the nature of the oil and the polarity of the solvent. Both factors were found to determine the acid number, iodine value and color intensity of each oil. The American Oil Chemists' Society, 1990 Attah J. Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Anambra State, Nigeria aut Ibemesi J. Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Anambra State, Nigeria aut Journal of the American Oil Chemists Society Springer-Verlag 67/1(1990-01-01), 25-27 0003-021X 67:1<25 1990 67 11746 https://doi.org/10.1007/BF02631384 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02631384 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Attah J. Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Anambra State, Nigeria aut NATIONALLICENCE 700 1- Ibemesi J. Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Anambra State, Nigeria aut NATIONALLICENCE 773 0- Journal of the American Oil Chemists Society Springer-Verlag 67/1(1990-01-01), 25-27 0003-021X 67:1<25 1990 67 11746 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer