Antifungal and antibacterial activities of Araucaria araucana (Mol.) K. Koch heartwood lignans.

Five lignans (secoisolariciresinol, pinoresinol, eudesmin, lariciresinol, and lariciresinol-4-methyl ether) were isolated from an MeOH extract from Araucaria araucana (Mol.) K. Koch wood for the first time in this species and their structures determined with spectroscopic methods.

Optimization of biomass, total carotenoids and astaxanthin production in Haematococcus pluvialis Flotow strain Steptoe (Nevada, USA) under laboratory conditions.

The microalga Haematococcus pluvialis Flotow is one of the natural sources of astaxanthin, a pigment widely used in salmon feed. This study was made to discover optimal conditions for biomass and astaxanthin production in H. pluvialis from Steptoe, Nevada (USA), cultured in batch mode.

New caffeic acid esters from Plazia daphnoides.

Two new 3,4 dihydroxycinnamic acid esters have been isolated from Plazia daphnoides. The structures were elucidated by NMR spectroscopy.