Determination Of Mineral Contents And Proximate Analysis Of “Tella” Residue Collected From Traditional “Tella” Brewers In Jimma City

Abstract

There are different byproducts of local brewery in Ethiopia. Among these “Tella”residue is one of the byproduct of local brewery beverage which people used as feed for animals like cattle, sheep for fatten up, growth get energy as well as for increase milk productions. The objective of this research was to analyze the physico-chemical, nutrients content and mineral content of Tella residue available in Jimma city. Tella residue samples were collected purposively from five different sites of Jimma city: Ajip Sefer, Kochi Sefer, Sar Sefer, Mentina Sefer, and Dawro Ber. 200 mL of Tella residue was randomly collected from each neighbor Tella vender’s houses of Ajip Sefer, Kochi Sefer, Sar Sefer, Mentina Sefer, and Dawro Ber and totally sampled from 25 Tella venders’ houses. Then composited in one liter polyethylene bag and recorded as Ajip Sefer, Kochi Sefer, Sar Sefer, Mentina Sefer, and Dawro Ber separately on polyethylene bag contain Tella residue. The physico-chemical properties were determined by using Digital pH meter and conductivity meter. Proximate analysis were determined by using the Association of Official Analytical Chemists (AOAC) methods. The proximate analysis of Tella residues were performed in analytical chemistry laboratory, Jimma University. The mineral contents (Ca, Mg, Fe, Cu, Cr, Pb, etc) of the Tella residue were investigated by using atomic absorption spectrometry (AAS). All analysis were made in replicates. The pH and Temperature (ºC) values of sample obtained from Kochi Sefer, Sar Sefer, Dawro Ber, Mentina and Ajip Sefer were (3.36 and 20.20), (3.86 and 19.83), (4.13 and 19.63), (3.94 and 19.7),(4.23 and 19.26), respectively. The conductivity value obtained from Kochi Sefer, Sar Sefer, Dawro Ber, Mentina Sefer and Ajip Sefer was (124.1, 130.66, 153.5, 138 and 130.66) μs/cm respectively. The obtained results were reported in (g/100g) for proximate value and (mg/Kg) for mineral analysis. The Tella residue samples from Kochi Sefer, Sar Sefer, Dawro Ber, Mentina Sefer and Ajip Sefer was (20.16, 18.83, 18.72, 19.50, and 15.75) Moisture content, (20.16, 18.83, 18.72, 19.50, and 15.75) crude protein, (5.43, 3.93, 3.73, 4.30 and 4.73) Crude fat ,(17.83, 15.51, 19.73, 19.20, and 16.73) crude fiber, (3.58, 3.71, 4.21, 3.88, and 4.46) Total ash, (36.51, 40.50, 35.46, 35.01, and 39.14) g/100g carbohydrate content, (255.44, 267.40, 247.98, 247.41,and 271.13) Kcal/g gross energy contents, respectively. While the mineral content of Tella residue samples contained of Calcium, Magnesium, Iron, Copper, Chromium and Lead was (656.70, 274.74,79.16, 7.73,1.55, and 0.40) mg/Kg respectively. One way of ANOVA (P< 0.05) showed the presence of significant variation among Tella residue samples collected from different sites.