ASSESSMENT OF THE EFFECT OF HEAT ON ALKALOID LEVELS IN TALINUM TRIANGULARE (WATER LEAF)

Student: Sandra Oshama Emeka
Supervisor: Dr Etinosa Peter
HOD: Dr Eka Moses Eso
Department of Biochemistry
Physical Sciences
University of Cross River State, Calabar

Abstract

The stability of plant alkaloids during thermal processing is a critical factor in food safety, nutrition, and phytochemical preservation. This study investigated the effect of temperature on alkaloid content in Talinum triangulare leaves across four temperature points: 25°C, 50°C, 75°C, and 100°C. Samples were analyzed in triplicate, and alkaloid percentage was quantified using standard extraction and analytical methods. Data were subjected to statistical analysis using the independent t-test to establish degree of significance among temperature treatments (P 0.95) between temperature and alkaloid content. The observed result aligns with existing reports indicating that many plant alkaloids are heat-sensitive and degrade through hydrolysis, oxidation, or volatilization under elevated temperature. Minimizing heat exposure during postharvest handling, drying, or extraction help preserve bioactive alkaloids for nutritional or pharmacological use, whereas controlled heating can be applied when the goal is for detoxification or alkaloid reduction for safety uses. These findings provide information for optimizing processing methods of Talinum. triangulare and related species to meet specific health, safety, and product-quality goals. (Word count 222)

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