USE OF ALGAE BIOMASS FOR THE PELLETIZATION OF Bowdichia virgilioides Kunth SEEDS

作者：Montanhim Graziela Cristina^*; Haneda Renata Natsumi; Lombardi Ana Teresa; Salgueiro Lima Maria Ines

来源：Revista Arvore, 2014, 38(5): 867-877.

• Savanna sucupira
• Chlorella sorokiniana
• Selenastrum capricornutum

Microalgae are considered promising organisms with applications in several areas, among them CO2 fixation, food industry, cosmetics and pharmaceuticals. Industrialization in the production of such organisms will generate algae residues that may be used for production cost reduction. In this research we proposed the use of microalgae as cement material in Bowdichia virgilioides Kunth seeds pelletization. This plant is a native species of the cerrado (Brazilian savanna). Microalgae biomass Selenastrum capricornutum and Chlorella sorokiniana were obtained from semi-controlled cultures kept in a greenhouse. In microalgae, the concentrations of chlorophyll a, proteins, carbohydrates and total lipidswere calculated, and pelletization biomass was obtained with the cells from stationary growth phase. As for the seeds, the treatments consisted of bare seeds, seed with agricultural gypsum, seed with agricultural gypsum and S. capricornutum or C. sorokiniana. Plant emergence and plantule development, as well as the presence of nitrogen fixing nodules were quantified. The results showed that seeds with gypsum and C. sorokiniana had 76% germination percentage, which was statistically similar to that obtained for bare seeds (86%); these were higher than the seeds pelleted with gypsum (60%) and gypsum plus S. capricornutum (62%). The best emergence percentage obtained for C. sorokiniana when compared with S. capricornutum may be related to the higher lipid content (11.4 mg L-1) and carbohydrate content (25.0 mg L-1) in C. sorokiniana, compared with S. capricornutum (2.2 mg L-1 of lipids and 0.31 mg L-1 of carbohydrate). Parameters such as mean emergence time, length and fresh and dry weight of aerial plants and roots of B. virgilioides plantules were similar for all treatments. From this research it can be concluded that C. sorokiniana biomass can have potential for application as a constituent of cement material in seed pelletization, presenting positive results that were similar to the emergence of bare seeds.

• 出版日期2014-10