Effect of Light Quality and Nitrogen Availability on the Biomass Production and Pigment Content of Palmaria palmata (Rhodophyta)

Macroalgae constitute a huge underexploited resource for compounds of interest to the health industry. External factors strongly influence the concentration of these compounds in the algal tissue. This implies a potential for optimizing the growth conditions for cultivated macro algae in order to promote production of valuable compounds. The objective of this study was to determine the influence of light spectral composition (red, blue, and white) and nutrient treatment (30 and 440 µM NO3 - ) on chlorophyll a and carotenoid concentration as well as growth rate of the red algae Palmaria palmata. The results show that the nitrogen load has a larger effect on the pigment concentration and growth rate in the algae, than the light treatments. Experiments with different light spectral composition showed the highest pigment content with white and blue light while red light was less effective. In addition, samples cultivated under white light had higher growth rates compared to red and blue light. Therefore, to increase the concentration of nutritionally valuable pigments cultivation strategies in marine production should be to use blue or white light and use high NO3 concentrations.

[1]  A. Gentili,et al.  Evaluation of a method based on liquid chromatography-diode array detector-tandem mass spectrometry for a rapid and comprehensive characterization of the fat-soluble vitamin and carotenoid profile of selected plant foods. , 2011, Journal of chromatography. A.

[2]  Susan Løvstad Holdt,et al.  Bioactive compounds in seaweed: functional food applications and legislation , 2011, Journal of Applied Phycology.

[3]  D. Kopsell,et al.  Carotenoid Pigments in Kale are Influenced by Nitrogen Concentration and Form , 2007 .

[4]  S. Lele,et al.  Carotenoid production from microalga, Dunaliella salina , 2005 .

[5]  Klaus Lüning,et al.  Tank cultivation of the red alga Palmaria palmata: Effects of intermittent light on growth rate, yield and growth kinetics , 2004, Journal of Applied Phycology.

[6]  D. Hanelt,et al.  Seasonal variation in ecophysiological patterns in macroalgae from an Arctic fjord. II. Pigment accumulation and biochemical defence systems against high light stress , 2002 .

[7]  H. Schubert,et al.  ACCLIMATION OF PALMARIA PALMATA (RHODOPHYTA) TO LIGHT INTENSITY: COMPARISON BETWEEN ARTIFICIAL AND NATURAL LIGHT FIELDS , 2000 .

[8]  H. Schubert,et al.  ACCLIMATION OF THE PHOTOSYNTHETIC APPARATUS OF PALMARIA PALMATA (RHODOPHYTA) TO LIGHT QUALITIES THAT PREFERENTIALLY EXCITE PHOTOSYSTEM I OR PHOTOSYSTEM II1 , 1995 .

[9]  F. Figueroa,et al.  Red and blue light regulation of growth and photosynthetic metabolism in Porphyra umbilicalis (Bangiales, Rhodophyta) , 1995 .

[10]  K. C. Morgan,et al.  Review of chemical constituents of the red alga Palmaria palmata (Dulse) [potential as a food source] , 1980 .

[11]  P. Raven,et al.  Biology of plants , 1971 .

[12]  J. H. Ryther,et al.  Studies of marine planktonic diatoms , 1962 .