This standard was last reviewed and confirmed in 2021.
Therefore this version remains current.
Abstract
PreviewThe 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.
-
Status: PublishedPublication date: 1988-12
-
Edition: 1Number of pages: 3
-
- ICS :
- 67.060 Cereals, pulses and derived products
Buy this standard
en
| Format | Language | |
|---|---|---|
| std 1 40 | ||
| std 2 40 | Paper |
- CHF40
Life cycle
Got a question?
Check out our FAQs
Customer care
+41 22 749 08 88
Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)