NDLI: Biomass production of Tolypothrix tenuis as a basic component of a cyanobacterial biofertilizer

Content Provider	Springer Nature Link
Author	Silva, Patricia Gisela Silva, Humberto de Jesús
Copyright Year	2013
Abstract	The influence of artificial illumination on upstream and downstream operations for biomass production of Tolypothrix tenuis as a basic component of a powdered cyanobacterial biofertilizer was studied. Cultures were operated semi-continuously for 18 months at harvesting frequencies of 4, 7, 10, and 14 days in two vertical plate photobioreactors of 1.5 and 5 cm of light path and illuminated at two different light intensities: high (290 μmol photons m$^{−2}$ s$^{−1}$) and normal (60 μmol photons m$^{−2}$ s$^{−1}$). Biomass was separated by self-flocculation and finally processed as a dried powder. The cellular concentration and volumetric productivity were superior in photobioreactors of short light path at high light intensity, while the overall areal productivity was higher in the photobioreactor of 5 cm at normal light intensity with weekly harvest frequency. The viability preservation of the dried and milled biomass was greatly enhanced by the use of halogen lamps and subsequent ionic flocculation with 10 mM MgSO$_{4}$ plus 10 mM CaCl$_{2}$. An optimum value of the retained viability index (RVI$_{10}$) was maintained for 24 months, while a sharp viability declination and cellular death were produced after 12 months with fluorescent tubes, which represents a relevant aspect in the commercialization step of this type of biofertilizer.
Starting Page	1729
Ending Page	1736
Page Count	8
File Format	PDF
ISSN	09218971
Journal	Journal of Applied Phycology
Volume Number	25
Issue Number	6
e-ISSN	15735176
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-04-23
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biofertilizer Tolypothrix tenuis Photobioreactor Flocculation Cellular viability Plant Sciences Freshwater & Marine Ecology Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science Aquatic Science

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