ISO 5506:1988
Soya bean products; determination of urease activity
- Standard No.
- ISO 5506:1988
- Release Date
- 1988
- Published By
- International Organization for Standardization (ISO)
- Status
- Replace By
- ISO 5506:2018
- Latest
- ISO 5506:2018
- Scope
- The method allows inadequate cookingof the products to be detected. It applies to products having a urease activity of less than 1 mg of nitrogen per gram of product as received. For more active products the mass of test may be reduced. The principle consists in mixing of a ground test portion with a buffered urea solution, after keeping the mixture for 30 min at 30 C, neutralization of the ammonia liberated, with an exess of hydrochloric acid solution, and back-titration with standard volumetric hydroxide solution.
ISO 5506:1988 history
- 2018 ISO 5506:2018 Soya bean products - Determination of urease activity
- 1988 ISO 5506:1988 Soya bean products; determination of urease activity
- 1978 ISO 5506:1978 Soya-bean products — Determination of urease activity
