Enzymatic Process for <i>Cystoseira barbata</i> Valorization: Ethanol Production and Additional By-Products
The aim of this study is to evaluate the potential of dried <i>Cystoseira barbata</i> alga for ethanol production through alcoholic fermentation. The influence of the main factors affecting the fermentation are studied in the frame of a 2<sup>3</sup> factorial experimental pl...
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doaj-7a8d0856f59f468486b97e29282285cf2021-04-22T23:04:55ZengMDPI AGProcesses2227-97172021-04-01974174110.3390/pr9050741Enzymatic Process for <i>Cystoseira barbata</i> Valorization: Ethanol Production and Additional By-ProductsDoinita-Roxana Cioroiu Tirpan0Ancaelena Eliza Sterpu1Claudia Irina Koncsag2Alina Georgiana Ciufu3Tănase Dobre4Chemical and Biochemical Engineering Department, University “Politehnica” of Bucharest, 1-7 Gheorghe Polizu Str., 011061 Bucharest, RomaniaChemistry and Chemical Engineering Department, Ovidius University of Constanta, 124 Mamaia Blvd., 900527 Constanta, RomaniaChemistry and Chemical Engineering Department, Ovidius University of Constanta, 124 Mamaia Blvd., 900527 Constanta, RomaniaChemical and Biochemical Engineering Department, University “Politehnica” of Bucharest, 1-7 Gheorghe Polizu Str., 011061 Bucharest, RomaniaChemical and Biochemical Engineering Department, University “Politehnica” of Bucharest, 1-7 Gheorghe Polizu Str., 011061 Bucharest, RomaniaThe aim of this study is to evaluate the potential of dried <i>Cystoseira barbata</i> alga for ethanol production through alcoholic fermentation. The influence of the main factors affecting the fermentation are studied in the frame of a 2<sup>3</sup> factorial experimental plan. The main factors influencing the process are the fermentation temperature (<i>t</i> from 25 °C to 35 °C), the solid to liquid ratio (<i>S/L</i> from 0.040 g/g to 0.080 g/g), and the cellulase ratio (<i>R</i> from 8 U/g d.m to 16 U/g d.m.). The maximum volatile compounds yield of 0.2808 g/g d.m and ethanol yield of 0.0158 g/g d.m were favored by the following experimental conditions: process temperature of 35 °C, solid to liquid ratio of 0.0415, and enzyme ratio of 16 U/g d.m. A statistical model was used to correlate the product yield with the process factors. Additionally, 19 interesting bioactive compounds were found in the enzymatic hydrolysis and alcoholic fermentation broths which seem likely to maintain natural defence mechanisms against diseases and physical disorders.https://www.mdpi.com/2227-9717/9/5/741<i>Cystoseira barbata</i>alcoholic fermentationbioactive compoundsstatistical model |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Doinita-Roxana Cioroiu Tirpan Ancaelena Eliza Sterpu Claudia Irina Koncsag Alina Georgiana Ciufu Tănase Dobre |
spellingShingle |
Doinita-Roxana Cioroiu Tirpan Ancaelena Eliza Sterpu Claudia Irina Koncsag Alina Georgiana Ciufu Tănase Dobre Enzymatic Process for <i>Cystoseira barbata</i> Valorization: Ethanol Production and Additional By-Products Processes <i>Cystoseira barbata</i> alcoholic fermentation bioactive compounds statistical model |
author_facet |
Doinita-Roxana Cioroiu Tirpan Ancaelena Eliza Sterpu Claudia Irina Koncsag Alina Georgiana Ciufu Tănase Dobre |
author_sort |
Doinita-Roxana Cioroiu Tirpan |
title |
Enzymatic Process for <i>Cystoseira barbata</i> Valorization: Ethanol Production and Additional By-Products |
title_short |
Enzymatic Process for <i>Cystoseira barbata</i> Valorization: Ethanol Production and Additional By-Products |
title_full |
Enzymatic Process for <i>Cystoseira barbata</i> Valorization: Ethanol Production and Additional By-Products |
title_fullStr |
Enzymatic Process for <i>Cystoseira barbata</i> Valorization: Ethanol Production and Additional By-Products |
title_full_unstemmed |
Enzymatic Process for <i>Cystoseira barbata</i> Valorization: Ethanol Production and Additional By-Products |
title_sort |
enzymatic process for <i>cystoseira barbata</i> valorization: ethanol production and additional by-products |
publisher |
MDPI AG |
series |
Processes |
issn |
2227-9717 |
publishDate |
2021-04-01 |
description |
The aim of this study is to evaluate the potential of dried <i>Cystoseira barbata</i> alga for ethanol production through alcoholic fermentation. The influence of the main factors affecting the fermentation are studied in the frame of a 2<sup>3</sup> factorial experimental plan. The main factors influencing the process are the fermentation temperature (<i>t</i> from 25 °C to 35 °C), the solid to liquid ratio (<i>S/L</i> from 0.040 g/g to 0.080 g/g), and the cellulase ratio (<i>R</i> from 8 U/g d.m to 16 U/g d.m.). The maximum volatile compounds yield of 0.2808 g/g d.m and ethanol yield of 0.0158 g/g d.m were favored by the following experimental conditions: process temperature of 35 °C, solid to liquid ratio of 0.0415, and enzyme ratio of 16 U/g d.m. A statistical model was used to correlate the product yield with the process factors. Additionally, 19 interesting bioactive compounds were found in the enzymatic hydrolysis and alcoholic fermentation broths which seem likely to maintain natural defence mechanisms against diseases and physical disorders. |
topic |
<i>Cystoseira barbata</i> alcoholic fermentation bioactive compounds statistical model |
url |
https://www.mdpi.com/2227-9717/9/5/741 |
work_keys_str_mv |
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