utilization of microwave energy for bio-oil extraction from bauhinia variegata seeds: a short-time technology

The oil extraction from bauhinia variegata seeds to produce biodiesel was performed using microwave-assisted extraction. about, 9 combinations of solvents were employed, and found that hexane-acetone (80:20 ml) gave a better yield, and the maximum bio-oil yield was found to be 29.03±0.61 % at the optimal condition of 9 min of processing time with a supply of 240 w and 12 ml/g of solvent volume. the presence of functional groups in the bauhinia variegata seed oil was identified using ft-ir analysis and the fatty acid composition was analyzed using gc-fid. the results reveal a predominant fatty acid (c18:2) present in the group was linoleic (about 43.4%). from scanning electron microscopy analysis it was observed that the microwave treatment promoted rapid extraction of oil, as a structure of raw materials was ruptured. the physicochemical properties of the oil were determined as per astm d6751 and found that a free fatty acids value of less than one can be directly treated for the transesterification process. the results from this study suggest that mae is an efficient and eco-friendly method to extract oil from bauhinia variegata seeds in bio-diesel production.