This standard was last reviewed and confirmed in 2009. Therefore this version remains current.
Abstract Preview
The method consists in extraction by shaking with dimethylformamide, then after centrifuging, addition of ferric ammonium citrate and ammonia to an aliqiot part of the supernatant liquid and spectrometric determination, at 525 nm, of the absorbance of the solution thus obtained, and determing of the tannic content using a calibration curve prepared using tannic acid.
General information
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Status : PublishedPublication date : 1988-12
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Edition : 1Number of pages : 3
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- ICS :
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Cereals, pulses and derived products
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| Format | Language | |
|---|---|---|
| Paper |
- CHF38
Life cycle
A standard is reviewed every 5 years
Revisions / Corrigenda
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Now under review
ISO 9648:1988 -
Will be replaced by
ISO/CD 9648
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