Utilization of seaweed (Gracilaria sp.) liquid as cost- effective macronutrients and micronutrients for bioethanol production
Seaweed liquid waste from filter-squeezed drying process of Gracilaria sp. causes an unpleasant odour to the environment. Although this waste can partially be used as biofertilizer and heavy metals adsorbent, a bigger portion of the waste remains unutilized thus causing a problem to the environmen...
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Main Authors: | , , , , , , , , |
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Format: | Article |
Language: | English English |
Published: |
AIDIC-Italian Association of Chemical Engineering
2023
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Subjects: | |
Online Access: | http://irep.iium.edu.my/109740/7/109740_Utilization%20of%20seaweed%20%28Gracilaria%20sp.%29%20liquid%20as%20cost-.pdf http://irep.iium.edu.my/109740/13/109740_Utilization%20of%20seaweed%20%28Gracilaria%20sp.%29%20liquid%20as%20cost-%20effective%20macronutrients%20and%20micronutrients%20for%20bioethanol%20production_Scopus.pdf http://irep.iium.edu.my/109740/ https://www.cetjournal.it/index.php/cet/article/view/CET23106227 https://doi.org/10.3303/CET23106227 |
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Summary: | Seaweed liquid waste from filter-squeezed drying process of Gracilaria sp. causes an unpleasant odour to the
environment. Although this waste can partially be used as biofertilizer and heavy metals adsorbent, a bigger
portion of the waste remains unutilized thus causing a problem to the environment. The present study aimed to
utilize seaweed liquid waste as a supplement in fermentation media. To achieve this aim, Saccharomyces
cerevisiae as a famous bioethanol producer was used to examine the ability of seaweed liquid to supply
macronutrients and micronutrients in the media to produce ethanol. Interestingly, when used as a supplement
in the fermentation media to produce ethanol, the liquid boosted ethanol production three folds from 200 mg/L
of 2 % glucose alone to 600 mg/L of 2 % glucose in liquid. Additionally, the liquid was able to substitute yeast
extract and peptone within YPD media to produce 647.48 mg/L ethanol as compared to only 542.39 mg/L with
normal YPD which contains yeast extract and peptone. For that reason, the utilization of seaweed liquid as the
supplement in the medium should be considered as an alternative cost-effective media for enhancing ethanol
production without the addition of other nutrients. |
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