A COMPARATIVE STUDY OF THE IMPACT OF CONTINUOUS AND BATCH PROCESSES ON THE DIASTATIC (THERAPEUTIC) ACTIVITIES OF TSIRO
Uhiara S. Ngozi*, Yelmi M. Bitrus, Jacob G. Anayo and Adeosun F. Florence
ABSTRACT
The diastatic indices (TSS, R-index, pH and water absorption capacity) of malted rice grains (24 – 120h sprouting, giving samples A – E respectively for each day) were measured after mixing each with 10g of whole maize flour and 150ml distilled water followed by incubation for 120min at 500C. Following the result of this preliminary work, four portions (2g each) of sample D (sprouted for 96h) were weighed out and each added to separate 150ml of wet milled sorghum (at the point of loading of tsiro) for kunu production. They were all incubated at 500C for 60, 80, 100 and 120min. These (batch process) experiments were repeated at 40, 45 and 550C. Employing a device for continuous conversion process, designed and fabricated for this research, the experiments with sample D above were done all over. All kunu samples were subjected to (TSS, solubility pH and spectrophotometry) tests, with those from continuous operation experiments further subjected to sensory evaluation with a 20 man trained panelist. From the preliminary work, sample D (sprouted for 96h) recorded 0Brix and refractive index of 10 and 1347 respectively. The portions of sample D used in kunu production under continuous process at 55 and 400C (each for 120min i.e. 120C) separately recorded TSS of 13 compared to 12 for counterpart sample (120B) under the batch process The result of sensory evaluation also shows sample 120C (processed at 400C) had the highest acceptability, suggesting significantly higher diastatic activity) conversion rate of the continuous process perhaps an indication of effectiveness of the device. Starch conversion, Therapeutic, Metabolism, Infant, and Aged.
Keywords: TSS, solubility pH and spectrophotometry.
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