 The study investigated the drying kinetics, diffusion coefficient, def, activation energy, EA, and color changes of punimuna leaves during drying using a horizontal dryer at three temperatures, 40 degrees Celsius, 50 degrees Celsius and 60 degrees Celsius, and two air velocities, 1.0 and 0.5 meters per second. The results showed that the triple exponential model best described the drying kinetics are 2 greater than 99.73%. The diffusion coefficient, def, increased with temperature and air velocity. The activation energy, EA, was found between 43.62 to 44.52 kJ per mole for speeds of 1 to 0.5 meters per second respectively. The color difference, deltii, increased with increasing temperature and lower air velocity. This article was authored by David Cho Kiesbe, Betsy Suri Ramos Pacheco, A.D. Marilu Solano-Rainoso, and others.