Eed oil of 57.five CTm at the identical temperature (Catarelli et al. 1993). It has

July 29, 2023

Eed oil of 57.five CTm at the identical temperature (Catarelli et al. 1993). It has density and certain gravity of 0.942 and 0.926 at 20 , respectively. The specific gravity of this study is reduce than the certain gravity of cashew nut (0.964) (Aremu et al., 2006) and NK2 Antagonist supplier caster seed oil (0.958) (Akpan et al. 2007). The refractive index of this study (1.473) is in close agreement with 1.465 (Aremu et al. 2006), 1.462 (Akintayo and Bayer 2002) and 1.468 (Akpan et al. 2007) of castor, akee pulp and cashew nut seed oils, respectively. This β-lactam Chemical medchemexpress implied that brebra oil is less thicker than most of drying oils whose refractive indices range from 1.475 to 1.485 (Duel and Tr 1951). The saponification value with the oil in this study was 174.95 mg KOH/gm. This was decrease than the values for some common oils like castor seed oil (185.83) (Akpan et al. 2007), palm oil (196-205 mgKOH/g), groundnut oil (188-196 mgKOH/g), corn oil (187-196 mgKOH/g) as reported by Akinhanmi et al. (2008), coconut oil (253 mg KOH/gm) and palm kernel oil (247 mg KOH/ gm) (Pearson, 1976). Having said that, this saponification value is inside exactly the same range of some edible oils reported by Eromosele and Paschal (2002). Furthermore, saponification value (174.95) from the oil within this investigation is pretty much within the range of (17587) ASTM (2002) specification for oils. Based on Pearson (1976), oils with reduced saponification values include higher quantity of lengthy chain fatty acids. Therefore, the value obtained for brebra seed oil contained higher quantity of larger fatty acids (because it is presented on Table 6, fatty acids 18 carbonAndualem and Gessesse SpringerPlus 2014, 3:298 http://springerplus/content/3/1/Page 6 ofTable 5 Brebra oil chemical and physical characteristicsOil physicochemical characteristics Colour Density at 20 Precise gravity at 20 Kinematic Viscosity at 40 Acid worth pH value Saponification value Refractive index at 40 Iodine worth Peroxide worth Ester valueAll values are mean value of triplicates.Unit Kg/m3 kg/l mm2/s mg KOH/gValues Pale-yellow color limpid liquid 0.942 0.926 40.59 0.39 KOH/g174.95 1.gI2/100 gm mEq/Kg104.48 6.88 174.chain accounts 92.eight ). The worth of viscosity of brebra oil was 40.49 mm2/s (as pointed out above) is found to become much less than the viscosity of cashew nut oil (56 mm2/s) (Akinhanmi et al. 2008). For production of biodiesel, consequently, transesterification reaction is definitely the very best approach to reduce the viscosity of the oil. The oil beneath investigation has pretty low acid value of 0.39 mg KOH/g when compared with cashew nut oil (0. 82 mg KOH/g) (Aremu et al. 2006), refined castor oil (0.869) and crude castor oil (1.148) (Akpan et al. 2007), plukenetia conophoora (11.five mg KOH/g) as reported by Akintayo and Bayer (2002), aenniseed (47.six ) by Ohsodi (1992). The acid value within this oil is below the maximum limit (two.0 mg KOH/g) of DIN EN ISO 660 and nearly within the range of ASTM specification (0.4 – four.0) of castor oil (ASTM 2002).Table 6 Fatty acid composition of fatty acid of brebra oil (FAs = fatty acids)No 1 2 three 4 five Fatty acids Unsaturated FAs Oleic Linoleic Linolenic Arachidonic Eurcic Total Saturated FAs six 7 eight 9 Palmitic Stearic Arachidic Behenic Total C16:0 C18:0 C20:0 C22:0 7.two 1.9 3.3 six.9 19.three C18:1 C18:two C18:3 C20:four C22:1 0.6 48.two 27.7 0.8 three.four 80.7 Carbon number Quantity ( )The low saponification worth and acid value imply that the oil is a lot more suitable for biodiesel since the oil acid value for biodiesel, which is less than 1 . The iodine value of brebra o.