EQA - Escola de Química e Alimentos
URI permanente desta comunidadehttps://rihomolog.furg.br/handle/1/1610
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2 resultados
Resultados da Pesquisa
- ItemVertical tubular photobioreactor for semicontinuous culture of Cyanobium sp(2011) Henrard, Adriano Seizi Arruda; Morais, Michele Greque de; Costa, Jorge Alberto VieiraWe evaluated the kinetic culture characteristics of the microalgae Cyanobium sp. grown in vertical tubular photobioreactor in semicontinuous mode. Cultivation was carried out in vertical tubular photobioreactor for 2 L, in 57 d, at 30 °C, 3200 Lux, and 12 h light/dark photoperiod. The maximum specific growth rate was found as 0.127 d−1, when the culture had blend concentration of 1.0 g L−1, renewal rate of 50%, and sodium bicarbonate concentration of 1.0 g L−1. The maximum values of productivity (0.071 g L−1 d−1) and number of cycles (10) were observed in blend concentration of 1.0 g L−1, renewal rate of 30%, and bicarbonate concentration of 1.0 g L−1. The results showed the potential of semicontinuous cultivation of Cyanobium sp. in closed tubular bioreactor, combining factors such as blend concentration, renewal rate, and sodium bicarbonate concentration
- ItemPilot scale semicontinuous production of spirulina biomass in southern Brazil(2009) Morais, Michele Greque de; Radmann, Elisangela Martha; Souza, Michele da Rosa Andrade Zimmermann de; Teixeira, Gilson Gonçalves; Brusch, Lucio Renato de Fraga; Costa, Jorge Alberto VieiraWe evaluated the feasibility of the pilot scale production of Spirulina strain LEB-18 in southern Brazil and assessed the quality of biomass produced in relation to its kinetics characteristic, nutritional value, heavy metal content and microbial content. The maximum mean biomass concentration was 1.24 g L− 1 and the maximum productivity was 69.16 g m− 2 d− 1. The biomass showed 84.0% digestibility, 86.0% (w/w) protein and 3.3% (w/w) lipid content. Analyses showed that the concentration (mg kg− 1) of heavy metals (As, 0.28 ± 0.01; Cd, < 0.05; Hg, < 0.01; and Pb, 0.17) and the microbial load (7.1 × 105 colony forming units per gram) were lower than the internationally accepted standards. These results show that pilot scale cultivation of Spirulina LEB-18 in southern Brazil is feasible and that the biomass produced is within the internationally recognized standards for use as a food additive for increasing the nutritional potential of conventional products.