Extraction method
US5624699A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D11/0226
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for extraction of a soluble component from a dried food material, which process includes: PA1 providing: PA2 a dried food material to be extracted, PA2 an extracting liquid, and PA2 an enriching liquid consisting essentially of a solution of the soluble component to be extracted; PA1 forming a pool of the enriching liquid at a lower end of a counter current extractor including a rotary screw conveyor mounted within an inclined or vertical housing; PA1 feeding the dried food material into the lower end of the counter current extractor to contact the pool of enriching liquid wherein enriching liquid is absorbed by the dried food material to form a hydrated, enriched food material; PA1 conveying the hydrated, enriched food material upwardly toward an upper end of the counter current extractor by means of the rotary screw conveyor whilst contacting the hydrated, enriched food material with the extracting liquid which is fed into the other end of the counter current extractor and flows downwardly under gravity to join the pool of enriching liquid; PA1 wherein the residence time of the food material in the pool enriching liquid is essentially no longer than the time taken to hy…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.