The finite, depleting and unsustainable nature of fossil fuels remained a global concern. This had continued to stir up an urgent need to consider cheaper renewable and sustainable alternative. Consequently, the assay of proximate and physico-chemical potentials of crude kernel oil extracts of Canarium schweinfurthii Engl. was conducted. This was intended to evaluate the nutritional and some of the inherent biodiesel properties. The procedure according to Association of Official and Analytical Chemist (AOAC) were deployed to analyze the proximate, physico-chemical and fatty acids contents of the crude kernel oil extracted of the test plant. It was found that the oil sample of the test plant had 9.25±0.05% (moisture content), 6.10±0.09% (crude fiber), 23.62±0.02% (crude protein), 44.35 ±0.04% (crude lipid), 10.35±0.04% (ash) and 6.33±0.03% (carbohydrate). The physico – chemical assay of the oil revealed promising biodiesel properties with relative density (0.966±0.01g/cm3), refractive index (1.465±0.05 at 30°C), calorific value (38.93±0.13MJ/kg), viscosity value (150.1±0.70 mm2/s), saponification value (220.30±0.98 mgKOH/g), peroxide value (4.26 ± 0.08meq/Kg), acid value (2.49±0.04 mgKOH/g), iodine value (64.70±0.10 g/100g) and cetane number (56.52±0.68). Furthermore, 14-methyl Pentadecanoic acid, methyl ester (C17H34O2), 13,16-Octadecanoic acid, methyl ester (C19H34O2) and Heptacosanoic acid, methyl ester (C28H56O2) were the assayed fatty acids content of crude kernel oil extract of C. schweinfurthii. These had relative percentage abundance (RPA) of 25.80±0.04%, 67.60±0.30% and 6.60±0.03%. The findings clearly elucidated the biodiesel potential of the kernel oil sample of C. schweinfurthii and consequently recommended its incorporation. In this regard, it became imperative for concerted afforestation efforts that would guarantee its sustainable utilization.

The present study was aimed at determining the potential in the uptake and translocation of essential trace elements by Amaranthus hybridus L. seedlings and the effects of added 0.0025M DTPA as a bioremediation technology to increase the contents of trace elements in edible parts. Four week old Amaranthus hybridus L. seedlings were transplanted in hydroponic solution treated with copper and zinc and then monitored in a greenhouse for 72 hr where significant changes in fresh weights were observed. The study was divided into two experiments first batch contains chelate and second batch contain unchelated treatments in three different combination of copper, zinc and Cu/Zn treatments. Cu2+ was restricted in the roots and no significant changes (p>0.05) in the accumulation of Cu2+ was observed with respect to addition of DTPA to different concentration compared to unchelated treatments. However, accumulation and transportation of Zn2+ from roots to shoots was increased significantly (p<0.05) to 2-3 fold after DTPA application compared to unchelated treatments as it helped to increase the metal bioavailability. Furthermore, in Cu/Zn combination, unchelated Cu2+ was found to accumulate more when compared to the chelated with the same Cu2+ concentration. Likewise, unchelated Zn2+ was significantly translocated as compared with chelate-assisted treatments of same zinc concentration. This indicates that in the presence of copper, zinc uptake was favorably translocated. Translocation factor was calculated to find relation with metal uptake in Amaranth hybridus L. seedlings. Keywords: Essential elements, DTPA amendment, hydroponic, Amaranthus hybridus L.