Nutritional evaluation of single-cell protein produced by Aphanothece microscopica Naegeli

The aim of this research was to evaluate the nutritional characteristics of Aphanothece microscopica Naegeli microalgae developed in the effluent of parboiled rice. The biomass was biologically evaluated by rat growth, during 10 days for nitrogen balance studies and 28 days for blood analysis. The f...

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Bibliographic Details
Published in:Bioresource technology 2010-09, Vol.101 (18), p.7107-7111
Main Authors: Zepka, Leila Queiroz, Jacob-Lopes, Eduardo, Goldbeck, Rosana, Souza-Soares, Leonor Almeida, Queiroz, Maria Isabel
Format: Article
Language:English
Subjects:
Aphanothece
Aphanothece microscopica
Oryza sativa
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Summary:The aim of this research was to evaluate the nutritional characteristics of Aphanothece microscopica Naegeli microalgae developed in the effluent of parboiled rice. The biomass was biologically evaluated by rat growth, during 10 days for nitrogen balance studies and 28 days for blood analysis. The feeding of Aphanothece biomass diets resulted in a nitrogen balance of 1.42 g/rat/day, an apparent biological value of 73.33%, an apparent digestibility of 82.12%, an apparent net protein utilization of 60.21% and a net protein retention of 2.40. Significant differences between the glycemic indices of rats fed with the Aphanothece and those fed with the control diet were not observed. However, the total cholesterol levels in the plasma of rats fed the test diet proved to be significantly lower. These results suggest the use of A. microscopica Naegeli developed in parboiled rice effluent as a potential source of single-cell protein.
ISSN:0960-8524
DOI:10.1016/j.biortech.2010.04.001