Carthamin Extracted from Petals of Safflower
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چکیده
منابع مشابه
Enzymatic conversion of precarthamin to carthamin by a purified enzyme from the yellow petals of safflower.
Precarthamin, a yellow precursor of carthamin, was efficiently isolated from the yellow petals of safflower (Carthamus tinctorius L. ) with Sephadex LH-20 column chromatography and preparative HPLC, and identified with UV-vis and NMR spectrometry. The UV-vis spectrum of precarthamin showed lambda(max) of 238 and 406 nm in MeOH. The molar extinction coefficients of precarthamin at 406 nm in MeOH...
متن کاملDecomposition and Analysis of Carthamin in Safflower - Dyed Textiles
Carthamin from safflower petals has been used for centuries in Asia as a red colorant for dyes and cosmetics. Carthamin is unstable, however, both in hot, aqueous solutions, which causes difficulties in its analysis in textiles, and to light, which results in fading of dyed textiles. We have found, using HPLC and mass spectrometric analysis, that carthamin undergoes a reverse aldol condensation...
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Catalytic activity o f the enzyme which mediates the synthesis o f carthamin was examined in the etiolated hypocotyl tissues o f Carthamus tinctorius L. The enzyme was optim ally active at pH 5.2 in citrate buffer. The activity o f the enzyme was highest in the extract from 2-day-old seedlings after sowing and it declined sharply with tissue ageing. The enzyme activity was localized in the apic...
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ژورنال
عنوان ژورنال: Sen'i Gakkaishi
سال: 2004
ISSN: 0037-9875,1884-2259
DOI: 10.2115/fiber.60.p_547