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Emulsification using environmental compatible emulsifiers and de-emulsification using D.C. field and immobilized Nocardia amarae

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Abstract

As environmental compatible emulsifiers, various polysaccharides were investigated and de-emulsification methods were studied using filtration, direct current (D.C.) field, and also Nocardia amarae. 0.01% (v/v) of alginic acid, arabic gum, chitosan, and curdlan showed more than about 2 h of emulsion stability in the half-life of emulsion layer by a homogenizer and showed about twice synergic effects with other polysaccharides in emulsification activity at the ratio of 9:1 (v/v). De-emulsification by 110V D.C. field took about 1 h for the separation of oils from 1 l of oil-in-water emulsion in case of 0.01% arabic gum. Oil-water separator was designed using non-woven fabrics in filtration system and Nocardia amarae grown in n-hexadecane or kerosene was immobilized in the non-woven fabrics.

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Authors and Affiliations

  1. Department of Chemical Technology, Korea

    Jae-Chan Lee

  2. Faculty of Chemical Engineering and Biotechnology Research Institute, Chonnam National University, Kwangju , 500-757, Korea

    Ki-Young Lee

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  1. Jae-Chan Lee
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  2. Ki-Young Lee
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Lee, JC., Lee, KY. Emulsification using environmental compatible emulsifiers and de-emulsification using D.C. field and immobilized Nocardia amarae. Biotechnology Letters 22, 1157–1163 (2000). https://doi.org/10.1023/A:1005601525934

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  • DOI: https://doi.org/10.1023/A:1005601525934

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