Lopez, Crisziel C. <br/><br/>
Development of heat–induction machine for optimized calabash juice extraction/ 
Crisziel C. Lopez, Irish Kimberly E. Carlos,  John Michael S. De Guzman, Moel Jr. L. Dequiña, and Czar Jahn L. Pangindian.-- 
 - Manila:  Technological University of the Philippines:  2025. 
 - xiv, 148pages:  29cm. 
<br/><br/> Bachelor's thesis 
<br/><br/>College of Engineering.-- 
<br/><br/>Includes bibliographic references and index. 
<br/><br/> This study aimed to design, fabricate, and evaluate a heat–induction-based machine<br/>specifically developed to optimize juice extraction from Crescentia cujete (calabash) fruit. The<br/>primary objective was to integrate traditional calabash juice processing methods with modern<br/>mechanical and thermal technologies to enhance juice yield, reduce labor, and ensure nutrient<br/>preservation. The research employed a developmental research design with prototyping<br/>techniques, encompassing machine conceptualization, fabrication, performance testing, nutritional<br/>analysis, and economic evaluation.<br/>The prototype consisted of a cooking vessel with a stirrer and induction heating system, a<br/>screw press for juice extraction, a strainer, and a structural frame. Performance testing across three<br/>trials showed that the machine could consistently process 10 kilograms of calabash pulp within 40<br/>minutes and extract an average of 7.95 liters of juice, surpassing the 75% target yield. Nutritional<br/>analysis confirmed the presence and retention of bioactive compounds such as alkaloids,<br/>flavonoids, and polyphenols, indicating minimal nutrient degradation due to controlled heating.<br/>The economic evaluation revealed a profit of ₱3,226.88 per batch and a payback period of<br/>approximately 11.6 months, confirming the machine’s financial viability.<br/>The developed heat-induction calabash juice extraction machine proved technically<br/>feasible, nutritionally reliable, and economically sustainable. The system offers a practical and<br/>scalable solution for local juice processors and small agribusinesses, especially in rural<br/>communities. The study recommends future improvements in automation, waste utilization, and<br/>adaptation for other indigenous fruits to expand the machine's applicability and impact. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calabash fruit processing machine<br/>Calabash fruit<br/>Small scale juice producers
<br/><br/><label>LC Class. No.: </label>BTH TJ 145   / L67 2025