Day 3 :
Location: Abu Dhabi
Anteneh Assefa (B.Pharm, MSc), is a Lecturer of Pharmaceutics & Pharmacology, Wachemo University. He is the expertise in pharmaceutical dosage form design and drug supply chain management. He has due experience of delivering pharmaceutical service to patients at hospitals, forecasting, quantifying and distribution of pharmaceuticals and medical equipment to health facilities and delivering/ instructing and training students and health care providers. Currently, he is offering various pharmaceutics and pharmacology courses to the pharmacy and other medical students; besides he is working on various basic and applied researchers. He is serving as Head of School of Pharmacy.
Starch from the tubers of Ethiopian potato (Plectranthus edulis) (Fam. Lamiaceae) has been isolated and examined for its chemical composition, amylose content and physicochemical properties. The yield of starch was about 80.4% on a dry weight basis. The proximate composition of the starch on the dry weight basis was found to be 0.14% ash, 0.21% lipid, 0.43% protein, and 99.22% starch. The amylose content was 30.6%. Its true density and moisture content values were 1.47 g/ml and 11.2%, respectively. Scanning electron microscopy (SEM) of the starch granules showed characteristic morphology that was by large oblong (elliptical) with some oval-shaped granules. The starch has normal granule size distribution with a mean particle size of 36.20 µm. The DSC thermograms of P. edulis starch obtained from starch-water mixtures (1:1), exhibited higher T(69.2 C), T(74.3 C) and T(83.3 C) values than those of potato starch. X-ray diffraction pattern of the starch was typical B-type with a distinctive maximum peak at 17.5 2θ. The starch possesses higher swelling power and moisture sorption pattern but lower solubility values than those of potato starch at all temperatures studied. Considering the high yield value and some similar physicochemical properties to those of potato starch, P. edulis (Ethiopian potato) can be explored as an alternative source of starch for various applications.