Process for obtaining purified protein isolates
US4131607A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1975 |
| Grant date | Dec 26, 1978 |
| Priority date | — |
| Expiry date | Oct 23, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23J1/14
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the production of purified protein isolates. The process of the invention comprises: PA1 (1) making a suspension or a slurry of cake of a protein substance containing compounds having a mucilaginous consistency with a volume in 1. of 10 to 15 times and preferably 3 to 5 times, the weight in kg of press cake of a solution of one or more alkaline-earth metal comprising a magnesium salt and further containing Na sulphite, and adding to the suspension or slurry thus obtained a concentrated solution of an alkali in an amount sufficient to permit solubilization of the proteins, PA1 (2) separating in a known manner the protein extract from the insoluble residue, PA1 (3) acidifying the resulting clarified protein extract with an acid solution to a pH of between 4.5 and 5.5 to precipitate the proteins, and PA1 (4) separating in a known manner from the mother-liquors the protein precipitate formed, the said protein precipitate being subsequently subjected to washing. The protein isolates so obtained are light colored and have a nitrogen content of at least 16%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.