ABSTRACT

 Kunun-zaki was prepared using millet and sorghum. The sample was divided into four portions. The first portion was preserved with benzoic acid (KBA); the second portion was preserved with sodium metabisulphite (KSM); the third portion was preserved with combination of benzoic acid and sodium metabisulphite (KBS) and the last portion was the control (KCO). Proximate composition and physicochemical properties were evaluated on the fresh and preserved samples after 7 days of storage at ambient temperature (27±2°C). Fresh kunun sample was packaged in different types of polyethylene bags and plastic containers and presented to a consumer panel for sensory evaluation. The sample packaged with low density polyethylene was the least likes in terms of appearance and was statistically different from others (p<0.05). Sample packaged with plastic bottle was the least liked in terms of taste and was also statistically different from others. The protein content for KBA, KSM respectively of the fresh samples with different preservatives were 0.92, 0.73, 0.70 and 0.60% which decreased to 0.72, 0.64, 0.60 and 0.44% and were not statistically different after seven days of storage. The ash content of the fresh samples were 0.52, 0.46, 0.41 and 0.37% whiçth decreased to 0.42, 0.34, 0.34, and 0.33% after 7 days of storage. The values were not statistically different (p>O.05). The fat content was 0.46, 0.40, 0.34 and 0.30% for the fresh sample and decreased to 0.40, 0.34, 0.33 and 0.25% after 7 days of storage. Samples KBA and KCO were statistically different. Moisture content values were 84.80% in the fresh F sample which increased to 87.43% and was statistically different in the preserved sample. The carbohydrate content of the fresh samples (KBA and KCO) were 12.65% and 12.40% which decreased to 10.03% and 7.16% On storage and were statistically different (pO.05). The TTA ranged from 0.32 to 0.42% in KSM and were statistically different from the fresh sample. The TSS of samples decreased from 10.36, 9.30, 8.41 and 6.32 to 7.20, 6.85, 4.56 and 2.65% which were not statistically different. Sample KBS had the lowest microbial load of 2.Ox 105cfu!ml and F 2.6x105cfu1m1 whole KCO had the highest count of 8.6xl06cfulml in the fresh sample while the microbial load in the stored sample became too numerous to count.