Role Of Microalgal Organic Matterderived Biocoating Towards Cell Deposition In Natural Biofilm Formation
Biofilm-based algal cultivation is gaining popularity as a viable platform for algal production, wastewater treatment and as a feedstock source for microalgae-based biorefinery initiatives. However, the interaction between cells and biocoatings are poorly understood. In this paper, the degree of...
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| Main Author: | |
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| Format: | Monograph |
| Language: | English |
| Published: |
Universiti Sains Malaysia
2022
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| Subjects: | |
| Online Access: | http://eprints.usm.my/55208/1/Role%20Of%20Microalgal%20Organic%20Matterderived%20Biocoating%20Towards%20Cell%20Deposition%20In%20Natural%20Biofilm%20Formation.pdf http://eprints.usm.my/55208/ |
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| Summary: | Biofilm-based algal cultivation is gaining popularity as a viable platform for algal
production, wastewater treatment and as a feedstock source for microalgae-based
biorefinery initiatives. However, the interaction between cells and biocoatings are
poorly understood. In this paper, the degree of adhesion Navicula incerta on
commercial microporous polyvinylidene fluoride (PVDF) membrane strip surface
before and after coating with AOM namely bounded extracellular polymeric
substances (bEPS), the soluble extracellular polymeric substances (sEPS) and
intracellular organic matter (IOM) extracted from Navicula sp. was studied.
Furthermore, the polysaccharide, protein and hydrophobicity of the sEPS, bEPS and
IOM of Navicula sp. on pristine and pre-treated PVDF membrane surfaces were
investigated. The findings showed that microalgal cell adhesion had higher adhesion
on coated membrane PVDF strips than pristine membranes. This was because EPS on
the pre-coated membranes provided a gel-like network to form a strong biofilm
adhesion to surfaces. It was found out that surfaces with higher hydrophobicity and
surface roughness provided better cell adhesion and stronger biofilm formation. The
productivity of sEPS polysaccharide was higher than the productivity of sEPS protein.
Also, the bEPS had higher productivity of polysaccharide than of protein. However,
the protein in IOM exhibited practically consistent concentration on four different
coated membrane strips. Carbohydrates and proteins are the required elements for the
biofilm formation. Surface wettability of EPS also influences cell attachment. |
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