ISO 5566:1982 PDF
Turmeric — Determination of colouring power — Spectrophotometric method
Turmeric — Determination of colouring power — Spectrophotometric method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 ноября 1982 г.
- Издание:
- ISO IS 5566 edition 1 version 1
- ICS:
- 67.220.10
Describes a method based on the extraction of the pigments of turmeric with hot ethanol, dilution of the extract and spetrophotometric measurement at the wavelenghth of maximum absorption. The result of the measurement is expressed as curcumin as a percentage by mass.
Abstract
Overview
ISO 5566:1982 specifies a standardized spectrophotometric method to determine the . The procedure quantifies curcuminoid content and expresses the result as . The method is based on pigment extraction with hot ethanol, controlled dilution, and absorbance measurement at the wavelength of maximum absorption (425 nm).
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