Membrane Separation Technology for High-Quality Kale Powder Production

Membrane separation technology including ultrafiltration, ceramic membrane clarification and nanofiltration concentration has become an advanced processing solution for premium spray-dried kale powder. Traditional manufacturing often damages heat-sensitive nutrients via thermal evaporation and leaves impurities that cause sediment and bitter taste. By adopting physical screening under room temperature, membrane systems remove colloids, suspended solids and microbes while retaining chlorophyll, polyphenols and minerals. This technology improves juice clarity, enhances powder solubility, lowers production energy consumption and moderates unpleasant bitterness. It is worth noting that membrane treatment applies only to extract-based spray-dried kale powder rather than simple freeze-dried milled kale powder. For food ingredient manufacturers, membrane separation helps produce high-value green vegetable powder with stable quality and extends product shelf life.