Abstract
A variety of 4-aryl- and 4-alkyl-3-(substituted benzylthio)-4H-1,2,4-triazoles were prepared and evaluated for their bleaching activity by the lettuce seedling test. Among the series of tested compounds, 4-(3-fluorophenyl)-3-(4-trifluoromethylbenzylthio)-4H-1,2,4-triazole (39) exhibited the highest bleaching activity, causing complete bleaching symptoms at 10 μM. In the dark condition, compound 39 inhibited the formation of such carotenoids as β-carotene, violaxanthin, neoxanthin and lutein, resulting in the formation of ζ-carotene, phytoene, phytofluene and β-zeacarotene, which were not detected in the untreated control. Treatment by compound 39 at 50 μM resulted in the amount of accumulated ζ-carotene being seven-fold higher than that of phytoene, phytofluene and β-zeacarotene. These results suggest that compound 39 might have interfered with desaturation, especially ζ-carotene desaturation, during carotenoid biosynthesis.
Original language | English |
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Pages (from-to) | 1671-1676 |
Number of pages | 6 |
Journal | Bioscience, Biotechnology and Biochemistry |
Volume | 66 |
Issue number | 8 |
DOIs | |
Publication status | Published - Jan 1 2002 |
All Science Journal Classification (ASJC) codes
- Biotechnology
- Analytical Chemistry
- Biochemistry
- Applied Microbiology and Biotechnology
- Molecular Biology
- Organic Chemistry