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Subject: Plant Biochemistry × Author: HAMSALEKHA × End date: 2017 × Start date: 2012 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    BIOCHEMICAL CHARACTERIZATION OF SEED OIL AND PROVENANCE VARIATION IN SEED MORPHOMETRIC TRAITS OF Pongamia pinnata GROWN IN UTTARA KANNADA DISTRICT AND ITS BIODIESEL PRODUCTION POTENTIAL
    (University of Agricultural Sciences Dharwad, 2015-06) HAMSALEKHA; Mrs. NAGARATHNA S. O.
    Provenance influence on growth, productivity, seed quality, oil content, fatty acid profile, seed cake quality and biodiesel production of Pongamia pinnata were evaluated in Uttara Kannada district (Agro-climatic Zone-9) of Karnataka during 2014-2015. Experiments are undertaken in the already existing trees in natural forests at four different locations with varying altitudes (417-612 m) and rainfall (1176-2439 mm). There was a significant effect of site conditions on various growth and productivity parameters. The fruit, seed and kernel parameters were significantly influenced by different locations and sites. Seed oil yield varied from 18.18 to 20.58 per cent and was dark reddish brown in colour with disagreeable odour. The GC-MS chromatogram of the oil indicated the presence of 8 to 10 compounds, of which 4 to 5 were identified as the major compounds viz., oleic acid range from 10.89-56.86 per cent, linoleic acid range from 20.20-52.64 per cent, palmitic acid range from 7.66-29.32 per cent, stearic acid range from 2.08-16.19 per cent and behenic acid range from 2.96-6.04 per cent. The methyl esters (biodiesel) having kinematic viscosity of 0.758 cSt (at 40°C), density as 86 (kg/m3 at 30°C), acidity was 7.95 (mg KOH/g), specific gravity of 0.86 (at 30°C), saponification value 177, flash point of 110ºC and cetane number of 53.65 and Iodine value of 90.1 with 60-62 per cent yield was obtained under the optimal condition. The biodiesel parameters fit into the ASTM standards. Macro, micro nutrients and proximate composition of de-oiled cake differed significantly with respect to locations. P. pinnata has the potential to capture medicinal and biofuel sector, due to its high oil content, oil quality and biodiesel production potential.