DefinePK

Abstract

This research presents the design and evaluation of a grape crusher-destemmer machine specifically developed for small to medium-scale grape producers. The objective was to enhance processing efficiency, reduce production costs, and improve the quality of grape products in the local wine industry. The machine was designed and developed at TEMDO and was rigorously tested for key performance metrics, including crushing efficiency, destemming accuracy, throughput capacity, and juice yield. Results indicated an average crushing efficiency of 92%, destemming accuracy of 96% and SD of 1.14, and a throughput of 800 kg of grapes per hour, all meeting or exceeding established targets. The juice yield averaged 70.35 % and a standard deviation of 0.772, demonstrating the machine’s effectiveness in maximizing extraction while minimizing waste. Economic analysis revealed that the machine, constructed using locally sourced materials, is a viable investment for grapes processors, with an estimated return on investment within two to three years. The study highlights the potential for the machine to enhance the local grape processing sector, promote sustainable practices, and support economic growth in rural areas. Recommendations for future improvements include automation features, further testing with diverse grape varieties, and establishing user training programs. This work contributes to the ongoing efforts to modernize agricultural practices in Tanzania and supports the development of a competitive local grape industry