Fig nbsp xA Effect of the thermal treatment
  • Different emulsifier effects on enzymatic activity are dependent on their specific nature and physical properties (Mine et?al., 2000 and Mine et?al., 2001). Different experiences have shown that BYK 49187 emulsifiers present some negative effects, behaving as an inhibitor, or deactivating agent if used in high concentrations. For instance, Mogensen, Sehgal, and Otzen (2005) have reported that T. lanuginosus lipase was activated by SDS around the critical micellar concentration (CMC) value (0.57 g L−1) but then the activity declined above the CMC level. Salameh and Wiegel (2010) observed that the non ionic detergent (Triton X-100, Tween 20 and Tween 80) slightly activated the lipases at concentration below their CMC levels (0.15, 0.07 and 0.01 g L−1, respectively), followed by a gradual decline in activity to a plateau that was similar to the one without added detergent. These authors suggested that the activity profiles of non ionic detergents and SDS are similar based on the fact that the activation started at low concentrations below their CMC values and therefore does not involve micelles, but maximal activation as well as inhibition occurred in the presence of micelles.

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