pH Variations in the Gastrointestinal Tract of Drosophila melanogaster and Gut Absorption by Natural Fruit Colorants

abolic regulation and nutrient assimilation, using Drosophila melanogaster as a model organism. It focuses on the absorption dynamics of naturally pigmented fruits selected from the VIBGYOR color spectrum, including guava (Psidium guajava), blueberry (Vaccinium spp.), banana (Musa spp.), orange (C.sinensis), strawberry (Fragaria × ananassa), and black plum (Syzygium cumini). The research examines the stability of biological molecules, the nutritional composition of fruits, pigment distribution, and enzymatic activity, particularly catalase activity in Drosophila gut tissues. Bananas were found to be the highest in energy and carbohydrates,