Effect of photocatalytic pretreatment of potato starch for bioethanol production using Saccharomyces cerevisiae during simultaneous saccharification-fermentation (SSF)
In this study, the effect of the photocatalytic (PC) pre-treatment with TiO2 during gelatinization (GE) stage in a simultaneous saccharification-fermentation process (SSF) of potato starch for bioethanol production was evaluated. Maximum amount of reducing sugars was 119.3, 114.6 and 104.8 g l-1 for...
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Universidad Nacional de Colombia
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doaj-bcc5ff45ffd748df9b793303533215a92020-11-25T01:39:57ZengUniversidad Nacional de Colombia Dyna0012-73532346-21832019-01-018620825125610.15446/dyna.v86n208.7269550479Effect of photocatalytic pretreatment of potato starch for bioethanol production using Saccharomyces cerevisiae during simultaneous saccharification-fermentation (SSF)Andrés Felipe López Vásquez0Martha Isabel Cobo Angel1Jose Daniel Convers Sánchez2Universidad de La SabanaUniversidad de La SabanaUniversidad de La SabanaIn this study, the effect of the photocatalytic (PC) pre-treatment with TiO2 during gelatinization (GE) stage in a simultaneous saccharification-fermentation process (SSF) of potato starch for bioethanol production was evaluated. Maximum amount of reducing sugars was 119.3, 114.6 and 104.8 g l-1 for PC→GE, GE→PC and reference (without PC), respectively while bioethanol concentration it increased gradually up to a maximum amount of 128.21, 106.74 and 85.91 g l-1 after 30 h, for PC→GE, GE→PC and reference (without PC), respectively. These results were consistent with the reducing sugars concentration, because bioethanol concentration increased slightly during 18–30 h of fermentation. Although enzymatic activity (ʋmax) for reactions was similar, in reference (without PC pre-treatment) it not promoted quick substrate conversion into ethanol, despite showing the higher affinity enzyme-substrate (Km). Considering traditional potato starch hydrolysis, PC pre-treatment shortened the reaction time of the biological reactions. Thus, the PC pre-treatment of potato starch for bioethanol production could be an environmentally feasible process without acid and alkali addition.https://revistas.unal.edu.co/index.php/dyna/article/view/72695bioethanolphotocatalytic pretreatmentpotato starch. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Andrés Felipe López Vásquez Martha Isabel Cobo Angel Jose Daniel Convers Sánchez |
spellingShingle |
Andrés Felipe López Vásquez Martha Isabel Cobo Angel Jose Daniel Convers Sánchez Effect of photocatalytic pretreatment of potato starch for bioethanol production using Saccharomyces cerevisiae during simultaneous saccharification-fermentation (SSF) Dyna bioethanol photocatalytic pretreatment potato starch. |
author_facet |
Andrés Felipe López Vásquez Martha Isabel Cobo Angel Jose Daniel Convers Sánchez |
author_sort |
Andrés Felipe López Vásquez |
title |
Effect of photocatalytic pretreatment of potato starch for bioethanol production using Saccharomyces cerevisiae during simultaneous saccharification-fermentation (SSF) |
title_short |
Effect of photocatalytic pretreatment of potato starch for bioethanol production using Saccharomyces cerevisiae during simultaneous saccharification-fermentation (SSF) |
title_full |
Effect of photocatalytic pretreatment of potato starch for bioethanol production using Saccharomyces cerevisiae during simultaneous saccharification-fermentation (SSF) |
title_fullStr |
Effect of photocatalytic pretreatment of potato starch for bioethanol production using Saccharomyces cerevisiae during simultaneous saccharification-fermentation (SSF) |
title_full_unstemmed |
Effect of photocatalytic pretreatment of potato starch for bioethanol production using Saccharomyces cerevisiae during simultaneous saccharification-fermentation (SSF) |
title_sort |
effect of photocatalytic pretreatment of potato starch for bioethanol production using saccharomyces cerevisiae during simultaneous saccharification-fermentation (ssf) |
publisher |
Universidad Nacional de Colombia |
series |
Dyna |
issn |
0012-7353 2346-2183 |
publishDate |
2019-01-01 |
description |
In this study, the effect of the photocatalytic (PC) pre-treatment with TiO2 during gelatinization (GE) stage in a simultaneous saccharification-fermentation process (SSF) of potato starch for bioethanol production was evaluated. Maximum amount of reducing sugars was 119.3, 114.6 and 104.8 g l-1 for PC→GE, GE→PC and reference (without PC), respectively while bioethanol concentration it increased gradually up to a maximum amount of 128.21, 106.74 and 85.91 g l-1 after 30 h, for PC→GE, GE→PC and reference (without PC), respectively. These results were consistent with the reducing sugars concentration, because bioethanol concentration increased slightly during 18–30 h of fermentation. Although enzymatic activity (ʋmax) for reactions was similar, in reference (without PC pre-treatment) it not promoted quick substrate conversion into ethanol, despite showing the higher affinity enzyme-substrate (Km). Considering traditional potato starch hydrolysis, PC pre-treatment shortened the reaction time of the biological reactions. Thus, the PC pre-treatment of potato starch for bioethanol production could be an environmentally feasible process without acid and alkali addition. |
topic |
bioethanol photocatalytic pretreatment potato starch. |
url |
https://revistas.unal.edu.co/index.php/dyna/article/view/72695 |
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