Supercritical Carbon Dioxide Extraction of Ginger (Zingiber officinale) Oil: A Mini‐Review

Ginger ( Zingiber officinale ) has been widely utilized for centuries as both a culinary ingredient and a medicinal agent due to its diverse pharmacological properties, including antimicrobial and anti‐carcinogenic activities. This review synthesizes recent advances in the extraction methods of ginger's bioactive compounds, with a particular focus on gingerol, a thermally sensitive, non‐polar constituent. Conventional extraction techniques often suffer from limitations such as high solvent consumption, lengthy processing times, and the need for extensive post‐extraction separation. In contrast, supercritical carbon dioxide (SCCO 2 ) extraction has emerged as a promising green technology, offering advantages, such as low thermal degradation, high selectivity, and minimal environmental impact. This article critically examines the principles, applications, and comparative advantages of SCCO 2 extraction in the context of ginger processing while also reviewing alternative extraction methods reported in the literature. The review aims to provide a comprehensive understanding of current extraction technologies and highlights future directions for optimizing the recovery of ginger's functional compounds.