Immobilization of lipase Eversa Transform 2.0 on poly(urea–urethane) nanoparticles obtained using a biopolyol from enzymatic glycerolysis

• Published in: Bioprocess and biosystems engineering Vol. 43; no. 7; pp. 1279 - 1286
• Main Authors: Bresolin, Daniela, Hawerroth, Beatriz, de Oliveira Romera, Cristian, Sayer, Claudia, de Araújo, Pedro Henrique Hermes, de Oliveira, Débora
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-07-2020; Springer Nature B.V
• Subjects: Biotechnology; Catalysts; Chemistry; Chemistry and Materials Science; Environmental Engineering/Biotechnology; Enzymatic activity; Ethyl carbamate; Fluorescence; Fluorescence microscopy; Food Science; Hydroxyl groups; Immobilization; Industrial and Production Engineering; Industrial Chemistry/Chemical Engineering; Lipase; Microscopy; Nanoparticles; NMR; Nuclear magnetic resonance; Palmitic acid; Research Paper; Stabilizers (agents); Transmission electron microscopy; Urea; Miniemulsion polymerization; Lipase Eversa; Transform 2.0; Enzymatic glycerolysis; Environmental biotechnology; Lipase immobilization; Lipase Eversa® Transform 2.0
• ISSN: 1615-7591; 1615-7605
• DOI: 10.1007/s00449-020-02324-6

In this work, the free lipase Eversa
®
Transform 2.0 was used as a catalyst for enzymatic glycerolysis reaction in a solvent-free system. The product was evaluated by nuclear magnetic resonance (
1
H NMR) and showed high conversion related to hydroxyl groups. In sequence, the product of the glycerolysis was used as stabilizer and biopolyol for the synthesis of poly(urea–urethane) nanoparticles (PUU NPs) aqueous dispersion by the miniemulsion polymerization technique, without the use of a further surfactant in the system. Reactions resulted in stable dispersions of PUU NPs with an average diameter of 190 nm. After, the formation of the PUU NPs in the presence of concentrated lipase Eversa
®
Transform 2.0 was studied, aiming the lipase immobilization on the NP surface, and a stable enzymatic derivative with diameters around 231 nm was obtained. The hydrolytic enzymatic activity was determined using
ρ
-nitrophenyl palmitate (
ρ
-NPP) and the immobilization was confirmed by morphological analysis using transmission electron microscopy and fluorescence microscopy.