This Fermented Kratom sample (often botanically classified as Bentuangie) is obtained through a strictly controlled anaerobic fermentation process of the leaves from the Mitragyna Speciosa tree. This specific process alters the chemical structure and the ratios of the present alkaloids, such as mitragynine and 7-hydroxymitragynine. Consequently, this powder is highly valuable for comparative studies on natural oxidation, enzymatic conversion, and the stability of botanical compounds. The finely ground powder has a homogeneous structure, allowing for consistent sampling for accurate microscopic analysis, phytochemical screening, and complex laboratory evaluations of fermented plant tissues.