Extraction of Oil from Fluted Pumpkin Seed (Telfairia Occidentalis) by Solvent Extraction Method
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Date
2015
Journal Title
Journal ISSN
Volume Title
Publisher
Valahia University of Targoviste, Romania
Abstract
Fluted pumpkin seeds (Telfairia Occidentalis) contain valuable edible oil. A study of oil extraction from the seed was
conducted using a 3 x 4 factorial experiment in a Randomized Complete Block Design (RCBD). Fluted pumpkin seed
pods were procured from National Horticultural Research Institute (NIHORT), Ibadan, Nigeria. Some of the major
equipment used were: laboratory test sieve (RO-TAP: ASTME11, AASHTOM92, HUMBOLDT, standard sieve) and
digital weighing balance (OHAUS 3001, accuracy: 0.001).Three different solvents with four levels (100%, 80%, 60%
and 40%) and three replicates were used. The solvent used were petroleum ether, n-hexane and methanol. AOAC
(2002) standard was used for quality analysis of oil. Data obtained for oil yield, extraction efficiency, extraction loss,
acid value, iodine value, saponification value, peroxide value, refractive index and viscosity were analyzed using
(ANOVA) at (P ≤ 0.05). The values obtained for oil yield, extraction efficiency, extraction loss, acidic value, peroxide
value, iodine value, saponification value, refractive index and viscosity at 100% levels were 16.446%, 79.9%, 2.857%,
3.16Mg/KOH/g, 0.84Meq/g, 103.2Mg/I/g, 154.2Mg/KOH/g, 1.4323, 1.88cm/s respectively for petroleum ether,
20.185%, 96.7%, 4.153%, 4.20Mg/KOH/g, 0.79Meq/g, 104.4Mg/I/g, 147.3Mg/KOH/g, 1.4235, 1.92cm/s for n-hexane
and 8.994%, 43.8%, 2.571%, 14.10Mg/KOH/g, 0.90Meq/g, 92.6Mg/I/g, 87.4Mg/KOH/g, 1.3987, 1.60cm/s for methanol.
The results obtained showed that all the solvents used performed better at 100% level; and the lower the level of
solvents the lower the output parameters in terms of oil yield, extraction efficiency, extraction loss and oil qualities(acid
value, iodine value, saponification value, peroxide value, refractive index and viscosity).
Description
Keywords
Quality, Extraction, Fluted Pumpkin Seed, Solvent, levels