Extraction of sweet compounds from Stevia rebaudiana Bertoni
US5972120A · kind A · utility
119Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Jul 17, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23L27/36
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
The invention disclosed relates to a process for the extraction of sweet compounds from Stevia rebaudiana Bertoni, by column extraction, followed by purification by filtration. The extraction is at temperatures in the range of 0 to 25.degree. C. Preferably, a pre-treatment step of microfiltration is used to clarify the extract. Purification is by ultrafiltration followed by nanofiltration. The filtration conditions are controlled to optimize the recovery of the sweet compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.