TL;DR: In this article, the application of natural dyes extracted from the seeds of the achiote shrub (Bixa orellana L.) in dye-sensitized solar cells (DSCs) was explored.
TL;DR: The organic extract of Annatto leaves appears to possess a narrow spectrum of antimicrobial activity, being effective against only the Gram-positive bacteria used in the authors' study.
Abstract: An organic extract of Annatto (Bixa orellana) leaves obtained in 95% ethanol was examined for in vitro antifungal and antibacterial activity using the agar diffusion and tube dilution methods. The ...
TL;DR: Diegodendron humbertii Capuron (Diegodendraceae Capuron) is endemic to Madagascar and analysis of rbcL sequence data indicates a close re- lationship to Bixa.
Abstract: Summary Diegodendron humbertii Capuron (Diegodendraceae Capuron) is endemic to Madagascar. The family is monospecific, and whereas various affinities have been suggested, its phylo- genetic position has remained unclear. Analysis of rbcL sequence data indicates a close re- lationship to Bixa. Together these taxa form a monophyletic group with a somewhat more distant relationship to other groups of Malvales s.l. including Cochlospermaceae. Cochlo- spermaceae (Cochlospermum and Amoreuxia) should be maintained as a family distinct from Bixaceae but if Bixaceae are expanded to include Cochlospermaceae they should also include Diegodendron. DNA extraction from herbarium specimens, involving modifications to the standard extraction and amplification techniques, is described.
TL;DR: The ethanol:ethyl acetate and ethyl acetate extracts of annatto seeds, which presented the highest levels of hypolaetin and bixin, respectively, were the extracts with the highest antioxidant capacity, although bixIn standard presented the lowest IC(50) values.
TL;DR: Three new flavone bisulphates have been found in the leaves of Bixa orellana and they have been identified as the 7-bisulphate-3-glucuronides of kaempferol, quercetin and isorhamnetin; the identities of the first two have been confirmed by synthesis.