Open AccessEffect of soybean/cassava flour blend on the proximate composition of Ethiopian traditional bread prepared from quality protein maize
Author(s) -
W Mesfin,
AUTHOR_ID,
A Shimelis
Publication year - 2013
Publication title -
african journal of food, agriculture, nutrition and development
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.22
H-Index - 11
eISSN - 1684-5374
pISSN - 1684-5358
DOI - 10.18697/ajfand.59.11535
Subject(s) - proximate , food science , protein quality , chemistry , composition (language) , corn flour , wheat flour , moisture , raw material , bran , philosophy , linguistics , organic chemistry
The effect of soybean and cassava flour blend on the proximate composition of Ethiopian traditional bread prepared from quality protein maize (QPM) was tested . Normal maize and quality protein maize grains were dried , cleaned and milled using a laboratory -scale mill. Similarly, soybean seeds were roasted, boiled, decorticated, and milled into the required particle size flour sample. Cassava tubers were also peeled, chopped, dried and milled in a similar fashion. Eventually, the soybean and cassava flour samples were blended individually with the quality protein maize flour in three different proportions : 5:95, 10:90 and 15:85, respectively. Normal maize flour was used as a control for the quality protein maize flour . Then bread samples were prepared from the respective composite flours using the sponge and dough method of bread making commonly used in the country . Both the composite flours and t he respective bread samples were then analyzed for their proximate compositions : moisture, ash, crude protein, crude fat, crude fibre and carbohydrate. The proximate analyses indicated that there is a significant difference ( p ≤ 0.05 ) in proximate composition of the plain quality protein maize bread (QPMB) and the soybean- or cassava -supplemented quality protein maize bread samples (SSBs and CSBs). The ash, crude protein, crude fat and crude fibre contents of the soybean -supplemented breads increased with progressive increase in the proportion of soybean flour addition. In the case of the cassava- supplemented bread samples , the highest proximate composition values were recorded for the 10% substitution. Moreover, highest values of carbohydrate , 39.83% and 44.08% , were obtained for the 10% soybean - supplemented breads and 10% cassava- supplemented bread s, respectively. The use of these locally available and easily produced grains through blending technology of flours can contribute to combat the widespread protein- energy malnutrition (PEM) in Ethiopia. This approach can also serve as an alternative means for having balanced diet especially for the low -income groups of the most food- insecure people in the country .