ISO 5566-1982 Turmeric Determination of colouring power Spectrophotometric method《姜黄 着色力的测定 分光光度法》.pdf

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1、Norme internationale INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWlEXQHAR OP!-AHbl3AlWlR Il0 CTAH D est la dilution de lextrait, savoir : 100 250 5. -= -x 100 5 E % , cm est Iabsorbance spcifique dune solution 1 % de curcumine, mesure 425 nm, dans des cuves de parcours optique de 1 cm, soit 1 607;

2、 m est la masse, en grammes, de la prise dessai. NOTE - Les rsultats peuvent tre exprims sur sec au moyen de la formule : A x 50 x 100 x 100 1607 x m x (100 - H) o H est la teneur en eau, en pourcentage en masse, de lchantillon. 10 Procs-verbal dessai Le procs-verbal dessai doit indiquer la mthode u

3、tilise et les rsultats obtenus. II doit en outre mentionner tous les dtails opratoires non prvus dans la prsente Norme internationale ou considrs comme facultatifs, ainsi que les incidents ven- tuels susceptibles davoir agi sur les rsultats. Le procs-verbal dessai doit donner tous les renseignements ncessaires lidentification complte de lchantillon.

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