Topic overview

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The process begins with authenticated, contaminant-screened botanical material harvested at a suitable growth stage. Cleaning, controlled drying, and milling prepare it for extraction. Solvent polarity and operating variables—including solvent-to-solid ratio, temperature, time, pH, and agitation—influence extraction yield and selectivity. Conventional methods such as maceration and percolation sit alongside intensified approaches, while scalable extractor designs support production. Before purification, defatting, decolorization, and vacuum concentration help prepare and protect extracts. Liquid–liquid partitioning separates constituents by polarity; chromatographic methods and crystallization can further purify selected compounds. Final drying and quality checks address stability, contaminants, and consistency. The preview outlines this workflow; the full lesson develops the methods and controls in greater detail.