| Autor: |
de Azevedo WM; Pharmaceutical Sciences Graduate Program, Federal University of Rio Grande do Norte, Natal-RN, Brazil., de Oliveira LFR; Department of Pharmacy, Federal University of Rio Grande do Norte, Natal-RN, Brazil., Alcântara MA; Food Science and Technology Graduate Program, Federal University of Paraiba, João Pessoa-PB, Brazil., Cordeiro AMTM; Food Science and Technology Graduate Program, Federal University of Paraiba, João Pessoa-PB, Brazil., Damasceno KSFDSC; Department of Nutrition, Federal University of Rio Grande do Norte, Natal-RN, Brazil., Assis CF; Department of Pharmacy, Federal University of Rio Grande do Norte, Natal-RN, Brazil., Sousa Junior FC; Pharmaceutical Sciences Graduate Program, Federal University of Rio Grande do Norte, Natal-RN, Brazil.; Department of Pharmacy, Federal University of Rio Grande do Norte, Natal-RN, Brazil. |
| Jazyk: |
angličtina |
| Zdroj: |
Preparative biochemistry & biotechnology [Prep Biochem Biotechnol] 2020; Vol. 50 (7), pp. 689-696. Date of Electronic Publication: 2020 Feb 17. |
| DOI: |
10.1080/10826068.2020.1728698 |
| Abstrakt: |
Cacay oil and butter were evaluated as enzymatic inducers for lipase production from Aspergillus terreus NRRL-255 by solid-state fermentation (SSF). Initially, physicochemical characteristics of agro-industrial wastes were evaluated in order to identify a potential solid substrate for lipase production. Higher water absorption index (3.65 g H 2 O/g substrate), adequate mineral content, great carbon source, and nitrogen concentration were factors that influenced the choice of wheat bran as a solid substrate. Cacay butter presented the highest lipolytic activity (308.14 U g -1 ) in the screening of lipid inducer. Then, the effects of lipid inducer concentration (cacay butter), temperature, pH, moisture, and fermentation time were evaluated on process performance using multivariate statistical methodology. Under optimal conditions, the highest lipase activity observed was 2,867.18 U g -1 . Regarding the lipase characterization, maximum relative activity was obtained at pH 7.0 and at 35 °C. An inhibitory effect was observed for Ca 2+ , Mn 2+ , Zn 2+ , Fe 2+ , and Cu 2+ ions. Lipase activity was increased with the reduction of sodium dodecyl sulfate (SDS) concentration and the increase of Triton X-100. Therefore, the use of wheat bran as a solid substrate combined with cacay butter demonstrated a substantial lipase production, indicating its biotechnological industrial potential. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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