| 摘要 |
Preparation of plant extracts (I) comprises (a1) extracting whole, dried or prepared plant material with a solvent in the presence of an agent (A) which improves the solubility of ≥ 1 product of extraction, increases the viscosity of the extract, affects the partial pressure of ≥ 1 extract component, reduces any enzymatic reactions, reduces any effects of sedimentation or flotation and (a2) separating any insoluble material and removing the solvent or (b1) extracting the material with a solvent, (b2) separating any insoluble material, (b3) mixing the extract with (A) and removing the solvent. The extraction is preferably effected at < 70 degrees C and the product dried or 5-20 (preferably 12-15) wt.% solvent added, preferably water, glycerol, propylene glycol or polyethylene glycol and a emulsifier, stabiliser, antioxidant, colour, flavour, dispersing agent, anticaking agent, hygroscopicity reducing agent, an inert support agent preferably polyethylene glycol, polyglycerine fatty acid esters, lecithins, silicone oils, sorbates, polysorbates, waxes, glycerides, fatty acids or paraffins. |
