| Full text | |
| Author(s): |
Klaic, Rodrigo
[1]
;
Gava Junior, Marcelo
[2]
;
Florencio, Camila
[3]
;
Ribeiro, Caue
[3]
;
Farinas, Cristiane Sanchez
[3]
Total Authors: 5
|
| Affiliation: | [1] Univ Fed Sao Carlos, Programa Posgrad Engn Quim, Rodovia Washington Luiz, Km 235, Caixa Postal 676, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Tecnol Fed Parana, Dept Engn Alimentos, Campus Medianeira, Ave Brasil, 4-232, BR-85884000 Medianeira, PR - Brazil
[3] Embrapa Instrumentacao, Rua 15 Novembro, 1-452, Ctr, Caixa Postal 741, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Pesquisa Agropecuária Brasileira; v. 56, 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Abstract: The objective of this work was to evaluate the solubilization of phosphorus from a phosphate rock by Aspergillus niger, under solid-state cultivation (SSC) in sugarcane (Saccharum officinarum) bagasse, by maximizing the efficiency of citric acid production. The phosphate rock (IPR) chosen for the study is a type of igneous rock with a very low phosphorus solubility, obtained from the Itafós company, in Arraias, in the state of Tocantins, Brazil. The rotatable central composite design (RCCD) was used as a statistical tool to evaluate the effect of the concentrations of the carbon source (sucrose) and of the IPR on the SSC medium as a strategy to improve P solubilization. In the process without the IPR, there was a citric acid production of up to 300 g per kilogram of substrate. The experiments in the RCCD showed that the addition of the IPR affected citric acid production, with values of solubilized P ranging from 1.44 to 2.72 g per kilogram of substrate and of solubilized P yield from 12.96 to 48.94%. The analysis of the solubilized P/sucrose ratio showed favorable conditions for P solubilization and citric acid production. The obtained solubilized P values are promising considering that the IPR has a very low solubilization, with only 8.6% P2O5. Overall, these findings could contribute to the development of biotechnological processes for producing eco-friendly phosphate fertilizers, as an alternative for a more sustainable agriculture. (AU) | |
| FAPESP's process: | 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales |
| Grantee: | Roberto de Campos Giordano |
| Support Opportunities: | Program for Research on Bioenergy (BIOEN) - Thematic Grants |