31 Lipid Biotechnology and Biochemistry

Anankanbil, Sampson; Suo, Fan; Jensen, Peter Ruhdal; Guo, Zheng

doi:10.1201/9781315151854-32

Cited by 1 publication

(2 citation statements)

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“…However, as the world population continues to grow energy demands increase and the amount of fossil fuels is expected to fall short of requirements in the near future. [4][5][6] Microbial biosurfactants are amphiphilic molecules, comprised of both hydrophilic and hydrophobic moieties, that have the ability to reduce surface and interfacial tension. 1 Current policies and legislation promote the exploitation of such side streams in order to make a successfull transition from petrochemical complexes to biorefineries that would have huge environmental and societal benefits.…”

Section: Introductionmentioning

confidence: 99%

“…Their triglycerides, consisting of fatty acids, can be used as precursors by several microorganisms or as initial reactants in lipase-catalyzed processes for biosurfactants' production. [4][5][6] Microbial biosurfactants are amphiphilic molecules, comprised of both hydrophilic and hydrophobic moieties, that have the ability to reduce surface and interfacial tension. Several bacteria produce them as a key mechanism to facilitate hydrocarbon uptake through micelle solubilization or pseudosolubilization.…”

Section: Introductionmentioning

confidence: 99%

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Gate‐to‐gate life cycle assessment of biosurfactants and bioplasticizers production via biotechnological exploitation of fats and waste oils

Kopsahelis

Kourmentza

Zafiri

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND This study investigated the biotransformation of fats and waste oils to glycolipid biosurfactants and bioplasticizers. The ecological performance and environmental impacts of the bioprocesses were evaluated aiming to assess their present environmental status and thus suggest future improvements using life cycle assessment (LCA) methodology. RESULTS Biosurfactants, namely rhamnolipids and sophorolipids, were obtained via fermentation. Bioplasticizers, fatty acid ethyl esters (FAEE) and monoglycerides (MAG), were developed via enzymatic catalysis with selected enzymes in mesophilic temperatures via ethanolysis and glycerolysis, respectively. The study revealed that air emissions, electricity and thermal energy requirements are the key contributors to the potential environmental impacts in the life cycle impact assessment (LCIA). More specifically, rhamnolipids production has less energetic needs compared with sophorolipids manufacturing, resulting in lower environmental impacts. The increased thermal requirements of the MAG production phase is the main contributor to their negative environmental performance, with the overall energy consumption for MAG production being 3‐fold higher than for the FAEE formation phase. CONCLUSIONS The assessment identified that among the biosurfactant production processes, sophorolipids production resulted in 22.7% higher environmental impact compared with rhamnolipids. Similarly, FAEE production can be classified as a more environment‐ friendly process compared with MAG, resulting in 67% lower environmental impact based on the environmental indicators assessed. © 2018 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%