Biology and Life Sciences
Received: 18 Aug 2018 , Published: 23 August 2018
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This study was aimed to analyze the nutritional and sensory quality variations of biscuits prepared from composite flour which consist of sprouted sorghum, soybean and finger millet during 12 weeks (3 months) of storage period. Based on the physical, nutritional and sensory analysis of preliminary studies, most preferred biscuit samples were selected for storage studies. Three replications were prepared for each treatment for the evaluation. Those were, T1 – 70% Sprouted Sorghum + 20% Soybean + 10% Finger millet, T2 – 60% Sprouted Sorghum + 30% Soybean + 10% Finger millet, T3 – 50% Sprouted Sorghum + 40% Soybean + 10% Finger millet. These treatments were packed in sealed laminated aluminium foil for storage studies. Packed biscuits were stored under ambient condition of 300C average temperature and 70% - 80% relative humidity for 12 weeks. Nutritional analyses of the biscuits were carried out at two weeks’ interval throughout the storage period. The results of nutritional analysis showed that, there were significance differences (p<0.05) between the tested treatments. These results revealed the declining trends in protein, fat, fiber, ash and total sugar and an increasing trend in moisture content of the biscuits. The organoleptic analysis carried out at the end of 12 weeks revealed that there were significant (p<0.05) differences for the organoleptic characters between the formulations. From the overall acceptability rating, the biscuit sample prepared from composite flour with 60% sprouted sorghum flour, 30% soybean flour and 10% finger millet flour had the highest mean value compared with other treatments. There were no remarkable changes in organoleptic qualities observed up to 12 weeks of storage at 300 C and RH of 70%-80% in this treatment. Microbial Analysis was done after 12 weeks of storage. Products were not affected by any microbial activities. There was no harmful effect during storage on the quality of the product due to microbial growth at ambient temperature. Therefore, it is safe for the consumption upon 12 weeks of storage. Based on the nutritional, organoleptic and microbial qualities, the biscuit sample prepared from composite flour with 60% Sprouted Sorghum flour, 30% Soybean flour and 10% Finger millet was the best treatment compared to other combinations at the end of storage period.
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