DEVELOPMENT AND PERFORMANCE EVALUATION OF PILOT MODEL FOR MECHANIZATION OF SANDESH MAKING
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Date
2003
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Publisher
AAU, Anand
Abstract
Sandesh, a traditional Indian dairy product has considerable market potential, as the milk utilized for the manufacture of sandesh is higher than the milk handled by organized dairy sectors. The organized dairy plants have shown interest for the manufacture of sandesh which requires suitable mechanized equipment for commercial application. The know-how of sandesh making has remained in the hand of halwais (Sen, 1987), and hence no adequate information has been available for processing as well as no improved equipment has been developed for mechanization of the process. Keeping these aspects in view the present work was under taken to develop a sandesh making machine and to evaluate the performance of the machine. The present work covers development of a batch type scraped surface heat exchanger (SSHE) and its components, evaluation of heat transfer behaviour and determination heat transfer co-efficients. The product prepared under different operating conditions was also evaluated for its chemical and sensory attributes. The shelf life of the product was evaluated at room temperature as well as under refrigerated conditions. The sandesh making machine consists of a SSHE, spring loaded scraper blade with Teflon edge and drive for the scraper assembly. The present design of the SSHE performs kneading of chhana-sugar mixture and cooking of the mixture in the unit. The performance of the SSHE was evaluated under different operating conditions of the machine. The effect of various parameters like initial moisture content of chhana, batch size, scraper speed on heat transfer performance and quality of the product was evaluated.
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Keywords
DAIRY ENGINEERING, DAIRYING, EVALUATION