| 摘要 |
<p>The present invention relates to an improved process for the preparation of Caralluma extract; said process comprises i) shade drying of Caralluma plant material; ii) treating the dried Caralluma plant material by at least one operation selected from a group consisting of sorting, cleaning and sizing to obtain Caralluma plant material meant for extraction; iii) iteratively extracting the Caralluma plant material with a first solvent for at least two initial iterations followed by at least two subsequent iterations with a second solvent at controlled temperature to obtain a diluted extract; iv) removing the solvent from the diluted extract by distillation at a temperature below 40°C to obtain a concentrate; v)chilling the concentrate at a temperature of about 6 to10°C for a period of about 7 to 8 hours to obtain a chilled concentrate; vi) filtering the chilled concentrate to obtain a filtrate; vii)concentrating the filtrate at a temperature below 60°C to obtain a viscous liquid containing 20% solid; viii) spray drying the concentrated viscous liquid to obtain a powder; and ix) pulverizing and sifting the dried powder to obtain a Caralluma extract.</p> |
