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Isolation and recovery of microbial polyhydroxyalkanoates.

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Title: Isolation and recovery of microbial polyhydroxyalkanoates.
Authors: Kunasundari, B.1, Sudesh, K.1 ksudesh@usm.my
Source: Express Polymer Letters. 2011, Vol. 5 Issue 7, p620-634. 15p. 1 Color Photograph, 1 Diagram, 4 Charts.
Subjects: Poly-beta-hydroxyalkanoates, Plastic scrap, Plastics, Polymers, Synthetic products
Abstract: The deleterious environmental impacts caused by plastic wastes have attracted worldwide concern. The biobased and biodegradable polyhydroxyalkanoate (PHA) appears to be one of the potential candidates to replace some conventional plastics. However, high production cost of PHAs has limited their market penetration. The major cost absorbing factors are the upstream fermentation processes and the downstream PHA recovery technologies. The latter significantly affects the overall process economics. Various recovery technologies have been proposed and studied in small scales in the laboratory as well as in industrial scales. These include solvent extraction, chemical digestion, enzymatic treatment and mechanical disruption, supercritical fluid disruption, flotation techniques, use of gamma irradiation and aqueous two-phase system. This paper reviews all the recovery methods known to date and compares their efficiency and the quality of the resulting PHA. Some of the large-scale production of PHA and the strategies employed to reduce the production cost are also discussed. [ABSTRACT FROM AUTHOR]
Copyright of Express Polymer Letters is the property of Budapest University of Technology & Economics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Isolation and recovery of microbial polyhydroxyalkanoates.
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  Data: <searchLink fieldCode="AR" term="%22Kunasundari%2C+B%2E%22">Kunasundari, B.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sudesh%2C+K%2E%22">Sudesh, K.</searchLink><relatesTo>1</relatesTo><i> ksudesh@usm.my</i>
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  Data: <searchLink fieldCode="JN" term="%22Express+Polymer+Letters%22">Express Polymer Letters</searchLink>. 2011, Vol. 5 Issue 7, p620-634. 15p. 1 Color Photograph, 1 Diagram, 4 Charts.
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  Data: <searchLink fieldCode="DE" term="%22Poly-beta-hydroxyalkanoates%22">Poly-beta-hydroxyalkanoates</searchLink><br /><searchLink fieldCode="DE" term="%22Plastic+scrap%22">Plastic scrap</searchLink><br /><searchLink fieldCode="DE" term="%22Plastics%22">Plastics</searchLink><br /><searchLink fieldCode="DE" term="%22Polymers%22">Polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Synthetic+products%22">Synthetic products</searchLink>
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  Label: Abstract
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  Data: The deleterious environmental impacts caused by plastic wastes have attracted worldwide concern. The biobased and biodegradable polyhydroxyalkanoate (PHA) appears to be one of the potential candidates to replace some conventional plastics. However, high production cost of PHAs has limited their market penetration. The major cost absorbing factors are the upstream fermentation processes and the downstream PHA recovery technologies. The latter significantly affects the overall process economics. Various recovery technologies have been proposed and studied in small scales in the laboratory as well as in industrial scales. These include solvent extraction, chemical digestion, enzymatic treatment and mechanical disruption, supercritical fluid disruption, flotation techniques, use of gamma irradiation and aqueous two-phase system. This paper reviews all the recovery methods known to date and compares their efficiency and the quality of the resulting PHA. Some of the large-scale production of PHA and the strategies employed to reduce the production cost are also discussed. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Express Polymer Letters is the property of Budapest University of Technology & Economics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3144/expresspolymlett.2011.60
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        Text: English
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        PageCount: 15
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      – SubjectFull: Poly-beta-hydroxyalkanoates
        Type: general
      – SubjectFull: Plastic scrap
        Type: general
      – SubjectFull: Plastics
        Type: general
      – SubjectFull: Polymers
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      – SubjectFull: Synthetic products
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      – TitleFull: Isolation and recovery of microbial polyhydroxyalkanoates.
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