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ISO 9648:1988

Current Revision

Sorghum -- Determination of tannin content

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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.


SDO ISO: International Organization for Standardization
Document Number ISO 9648
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 34/SC 4
Publish Date Document Id Type View
Not Available ISO 9648:1988 Revision