Drying and physico-chemical characterization of brewers spent grain for productivity improvement of Philippine smallholderanimal production

摘要

Brewers spent grain produced in Misamis Oriental, Philippines was disposed, transported, stored, and utilized in its wet form. Drying was rarely practiced. A solar energy- or biomass-powered batch dryer was designed and fabricated. Initial tests showed that it can reduce the moisture content from 71% to 10%, wet basis, in about 2 h, using a biomass furnace at an initial sample weight of 10 kg. Solar drying, however, took about 5.5 - 6 h and may not be practical to use under the present design. Basicphysical attributes, proximate composition, and moisture sorption characteristics of the dried BSG were also assessed. Proposed measures to improve the performance of the prototype dryer and to encourage the use of drying and other spoilage prevention methods were also presented.