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ISO 9648:1988

Sorghum — Determination of tannin content

Standard Details

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

Status : Published
Standard Type: Main
Document No: ISO 9648:1988
Document Year: 1988
Pages: 3
Edition: 1
  • ICS:
  • 67.060 Cereals, pulses and derived products

Life Cycle

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ISO 9648:1988
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