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/lp/wiley/production-of-luteolin-extracts-from-reseda-luteola-and-assessment-of-A0uYQ0FerJ
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- Publisher
- Wiley
- Copyright
- © 2002 Society of Chemical Industry
- ISSN
- 0022-5142
- eISSN
- 1097-0010
- DOI
- 10.1002/jsfa.1160
- Publisher site
- See Article on Publisher Site
Abstract
In this work, several experiments were performed sequentially in 50 cm3 shaken tubes and a 1 dm3 stirred extractor, thus allowing methanol to be selected as the most appropriate leaching solvent for luteolin from leaves, stems and flowers of weld (Reseda luteola). The extraction capability of methanol at 25 °C was found to be about 7 times greater than that of boiling water at pH 10. A composite design experiment allowed the effects of particle size and liquid/solid ratio to be determined, thus resulting in an optimal luteolin extraction yield of 8.6 ± 0.2 g kg−1 dried weld material when leaching plant particles sieved through 0.5 mm openings with 40 dm3 methanol kg−1. Preliminary dyeing tests on pre‐mordanted raw cotton and wool standard specimens gave rise to dyed specimens with the same greenish‐yellow hue but greater or smaller values of lightness and chroma respectively. Despite all dyed specimens exhibiting a minimum resistance to a simulated acid perspiration solution, the resistance to fading of dyed wool specimens was generally greater than that of cotton ones. © 2002 Society of Chemical Industry
Journal
Journal of the Science of Food and Agriculture – Wiley
Published: Aug 1, 2002