Preliminary Investigation of Dry Matter, Total Carbohydrates and Fatty Acid Compositions of Rose Apple (Syzygium Samarangense)

This study investigates the dry matter content, total carbohydrates, and fatty acid composition of Syzygium samarangense (Rose apple), a tropical fruit commonly grown in Southeast Asia. Samples were collected from a garden in Dhaka, Bangladesh, and analyzed for moisture, ash, fat, and carbohydrate content, as well as fatty acid composition. The dry matter content was determined to be 7.28%, with a moisture content of 92.72%, and ash content at 4.35%. The average fat content across samples was 0.29%. Gas Chromatography-Flame Ionization Detection (GC-FID) revealed that the predominant fatty acids were eicosenoic acid (25.59%), behenic acid (21.93%), and arachidic acid (19.16%). The total carbohydrate content was found to be 65 mgkg,-1 was confirmed through a modified Molisch test and calibration curve analysis. Glucose presence in the fruit was verified via thin-layer chromatography. These findings provide a comprehensive nutritional profile of Rose apple, contributing to its potential as a functional food with benefits in hydration, energy provision, and cardiovascular health. This research lays a foundation for future studies on the nutritional and health benefits of this underexplored tropical fruit.