title: [Study on the backward extraction of cellulase in rhamnolipid reverse micelles].
abstract: This paper studied the backward extraction of cellulase in RL/isooctane/n-hexanol reverse micelles system. Several key parameters influencing the backward extraction efficiency and activity recovery of cellulase were investigated, including stripping aqueous pH, stripping time, salt type and ionic strength, and addition of alcohols. The experiment results indicated that the optimal parameter values as follows: stripping aqueous pH 7.0, stripping time 30 min, 0.15 mol x L(-1) of KCl, dosage of n-butanol 2%. Under above optimum conditions, the backward extraction efficiency and activity recovery were up to 76.22% and 93.39%, respectively. The backward extraction of cellulase using reverse micelles based on biosurfactant RL performs well. Furthermore, RL has many advantages such as high biodegradability, low critical micelle concentration, etc. The application prospects of RL reverse micelles are extensive.
authors.forename: Yan-Ge
authors.initials: YG
authors.lastname: Zhao
authors.forename: Xing-Zhong
authors.initials: XZ
authors.lastname: Yuan
authors.forename: Hua-Jun
authors.initials: HJ
authors.lastname: Huang
authors.forename: Kai-Long
authors.initials: KL
authors.lastname: Cui
authors.forename: Xin
authors.initials: X
authors.lastname: Peng
authors.forename: Zi-Yuan
authors.initials: ZY
authors.lastname: Peng
authors.forename: Guang-Ming
authors.initials: GM
authors.lastname: Zeng
mesh_terms: D020001:1-Butanol; D001673:Biodegradation, Environmental; D002480:Cellulase / Q000737:chemistry*; D006017:Glycolipids / Q000737:chemistry*; D000441:Hexanols; D006863:Hydrogen-Ion Concentration; D008823:Micelles; D009795:Octanes; D009994:Osmolar Concentration; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D006017:Glycolipids; D000441:Hexanols; D008823:Micelles; D009795:Octanes; D013501:Surface-Active Agents; C418382:rhamnolipid; C036260:1-hexanol; D020001:1-Butanol; D002480:Cellulase; C045798:2,2,4-trimethylpentane