Astaxanthin, a natural red pigment that belongs to the carotenoid group, has been known as super antioxidant due its very strong activity (65 times higher than vitamin C, 54 more potent -carotene, and 14 E). Haematococcus pluvialis is microalgae with high astaxanthin content. The benefit of in health issues mainly potential treatment for degenerative diseases caused by reactive oxygen or nitrog...

Microalgal bioremediation of recirculating aquaculture system (RAS) wastewater represents an alternative for treatment with the potential to generate valuable biomass. This study evaluated effects removing biological contamination and suspended solids from Nordic area RAS through filtration 0.45 μm filters on performance nutritional value microalgae. All three tested green microalgae (Haematoco...

NatuRose algae meal is safe natural source of astaxanthin derived from a unique strain of the microalgae, Haematococcus pluvialis. The majority of the NatuRose carotenoid fraction is astaxanthin, with about 15% of the remaining fraction consisting of canthaxanthin, lutein and beta-carotene. NatuRose is spray dried and formulated into a fine dark red powder and is currently used worldwide as a c...

The influence of inorganic fertilizer media at different concentrations on the growth and biochemical composition of Haematococcus pluvialis microalgae was evaluated. Microalgae were placed in a bath culture with inorganic fertilizer (NPK) medium and WC medium during 28 days, Growth and biological aspects of microalgae between the media were compared. Mineral concentrations affected the physiol...

The unicellular microalga Haematococcus pluvialis has emerged as a promising biomass feedstock for the ketocarotenoid astaxanthin and neutral lipid triacylglycerol. Motile flagellates, resting palmella cells, and cysts are the major life cycle stages of H. pluvialis. Fast-growing motile cells are usually used to induce astaxanthin and triacylglycerol biosynthesis under stress conditions (high l...

Nonlinear optical microscopy was used to image the localization of astaxanthin accumulation in the green alga, Haematococcus pluvialis. Polarization-in, polarization-out (PIPO) second harmonic generation (SHG) and third harmonic generation (THG) microscopy was applied to study the crystalline organization of astaxanthin molecules in light-stressed H. pluvialis in vivo. Since astaxanthin readily...

The unicellular green alga Haematococcus pluvialis is used as a biological production system for astaxanthin. It accumulates large amounts of this commercially interesting ketocarotenoid under a variety of environmental stresses. Here we report the identification and expression of three different beta-carotene ketolase genes (bkt) that are involved in the biosynthesis of astaxanthin in a single...