Enhancement of Hydrocarbon Productivity of Botryococcus braunii by an Adenine Type Phytohormone

Abstract:

This study examined the effects of an adenine-type cytokinin 6-benzylaminopurine (6-BA) on the growth and metabolism characteristics of Botryococcus braunii, one of the most promising oil-rich algae for biofuel production. The results showed that 6-BA of low dose (0.1-1.0 mg L^-1) would enhance the algal growth rate and biochemical synthesis, whereas too much (5.0 mg L-1) would be lethally toxic for B. braunii. Noticingly, though the maximum algal growth rate, chlorophyll and β-carotenoid content were observed in the treatment with 0.5 and/or 1.0 mg L^-1 6-BA, both the maximum algal hydrocarbon content and the highest hydrocarbon productivity were observed in the treatment with 0.1 mg L^-1 6-BA, which were respectively 2.45 and 3.48 times of the control (39.1% vs. 16.0%, 546 mg L^-1 vs. 157 mg L^-1). This finding has great implications for improving algae biofuels production by phytohormone.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 397-400
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.397
• Online since: May 2012
• Authors: Jun Zhi Liu, Ya Ming Ge, Guang Ming Tian
• Keywords: Biofuel, Chlorophyll, Hydrocarbon, Microalgae, Phytohormone, β-Carotenoid

References

[1] R.H. Wijffels and M.J. Barbosa: Science. Vol. 329 (2010), p.796

[2] P.M. Bradley: J Phycol. Vol. 27 (1991), p.317

[3] P. Metzger and C. Largeau: Appl. Microbiol. Biotechnol. Vol. 66 (2005), p.486

[4] A. Banerjee, R. Sharma, Y. Chisti and U.C. Banerjee: Crit. Rev. Biotechnol. Vol.22(2002), p.245

[5] Y. Ge, J. Liu and G. Tian: Biores. Technol. Vol.102(2011), p.130

[6] S. Sawayama, T. Minowa, Y. Dote and S. Yokoyama S: Appl. Microbiol. Biotechnol.Vol.38(1992), p.135

[7] D.A. Meloni, M.A. Oliva, G.A. Martinez and J. Cambraia J: Environ. Exp. Bot. Vol. 49(2003), p.69

[8] M.L. Costa, P.M. Civello, A.R. Chaves and G.A. Martinez GA: Postharvest Biol. Technol. Vol. 35(2005), p.191

[9] T.G. Owens, J.C. Gallagher and R.S. Alberte: J. Phycol. Vol. 23(1987), p.79