May 2026

oils

How is pigment powder made?

How is pigment powder made? Pigments are made from inorganic (metals and some* minerals) or organic raw materials (plants & animals) and are transformed into colouring compounds using a range of different techniques which use both mechanical and chemical procedures. However, most of the pigments used today are either synthetic organic ones or inorganic. Synthetic

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oils

What separation methods are used to separate plant pigments?

What separation methods are used to separate plant pigments? The technique of paper chromatography is commonly used to separate plant pigments based on their molecular weight. Plant pigments include chlorophyll-b, chlorophyll-a, carotenoid, and xanthophyll, which all have various molecular weights, colours, and absorption maxima. High-performance liquid chromatography (HPLC) has been commonly used as method of

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oils

What are the 7 methods of extraction?

What are the 7 methods of extraction? In general, extraction procedures include maceration, digestion, decoction, infusion, percolation, soxhlet extraction, superficial extraction, ultrasound-assisted, and microwave-assisted extractions. It defines extraction as separating medicinally active plant or animal tissues from inactive components using selective solvents. Several specific extraction methods are described, including maceration, digestion, decoction, percolation, soxhlet extraction,

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