The extract yield increased with temperature and achieved a
maximum at 50 C. The initial increase is most likely due to the
reduction in viscosity and surface tension with temperature, and
thus increases solubility and diffusion from the cell wall to the
liquid phase (Carr et al., 2011; Chemat and Cravotto, 2013;
Samavati, 2013; Ye and Jiang, 2011).