2 publications
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Published Subscription
Isolation of Amylase Producing Bacteria from Tella and Analysis of the Contribution of Their Amylases in ‘Tella’ (Ethiopian Local Beer) ProductionBy Berhanu Tsehai Andualem, Amare Gessesse, Mulugeta Aemero
Abstract: Abstract: ‘Tella’ is an Ethiopian home-brewed beer which is made up of different cereals and Rhamnus prinoides as bittering agent. The objective of this study was to identify efficient amylase producing bacteria isolates form ‘tella’ and compare their amylase with amylase from malt. Four potentially amylase producing bacteria (designated A, B, C, and D) were isolated and compared their amylase activities with amylase from malt using standard methods. The concentration …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 5, Issue 1, 2015 · pp. 18–27 Read article →
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Published Subscription
Methods for Removal of Rotenone from Brebra (Millettia ferruginea) Seed, Oil and Defatted Flour under Different Treatment ConditionsBy Berhanu Tsehai Andualem, Amare Gessesse
Abstract: The main objective was to develop and determine the rotenone removal methods from different samples of defatted flour and refined oil. To remove rotenone, ethanol, pH gradient treatment, cooking and roasting were used and rotenone was determined by HPLC analysis. Most of the rotenone (0.701%) from non-defatted flour is lost during defatting (0.37%) and refinery process of oil (0.02%). From raw seed, 84.1, 85.1 and 97.3% rotenone was removed by …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 3, Issue 3, 2013 · pp. 5–11 Read article →