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1991 (1)
1Author    Koshi SaitoRequires cookie*
 Title    Acceleration of Enzyme-Dependent Carthamin Formation by Manganese with Diversed Valence States  
 Abstract    Effect of manganese with three different valence states on carthamin formation was studied by using freshly collected flowers from dyer's saffron (C. tinctorius) capitula. A t 1 -10 hm con­ centration, these cations accelerated markedly the carthamin formation induced by endoge­ nous enzyme(s) in the detached floral tissues. The acceleration was obviously dependent on the valence state o f the test metals, more pronounced by M n (V II) or M n (III) than by M n (II) at a series o f given ionic strengths. O n a 1 |aM level, M n (V II) and M n (III) accelerated the pigment accumulation by faster o f 9 and 8, resp. than M n (II) during 5 min incubation at 30 °C. M n (V II) and M n (III) acted on both fresh and boiled florets, while M n (II) exerted preferential­ ly its activity on intact materials. Possible im plication of manganese ions on the enzyme-cata-lyzed carthamin formation are discussed. 
  Reference    Z. Naturforsch. 46c, 1011—1016 (1991); received M ay 28/July 25 1991 
  Published    1991 
  Keywords    Carthamus tinctorius, Cartham in Form ation, Manganese, Diversed Valence State 
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 TEI-XML for    default:Reihe_C/46/ZNC-1991-46c-1011.pdf 
 Identifier    ZNC-1991-46c-1011 
 Volume    46