Biodegradable products by lipase biocatalysis

Chemoenzymatic synthesis of oleic acid‐based polyesters for use as highly stable biomaterials

“…There is a possibility that oleic acid epoxide can be polymerized through ring opening polymerization of the epoxy group and leads to a polyether. 18 In our work, formation of polyester was dominant according to 1 H-NMR spectra when the reaction was conducted under 120 8C as can be seen from the disappearance of the epoxide group (proton shown at 2.9 ppm) and the debut of the ester group (4.8 ppm). Nevertheless, the occurrence of the small peaks between 3.2 and 3.6 ppm in the 1 H-NMR spectra suggested the existence of ether bond in the polymer (Fig.…”

“…Whereas demands for new biomedical polymeric materials continue to grow, needs for renewable and biodegradable alternatives of traditional polymers to embrace the challenges in environmental protection and future shortage of petroleum supplies are fueling a new phase of development of the area. [1][2][3] As a result, many biological and chemical processes have hitherto been demonstrated powerful for production of polymers, fuels and chemicals from biorenewable resources, with the utilization of carbohydrates as a major interest. [4][5][6][7][8] Lipids constitute another important class of renewable resources, and can afford products of properties that are different from carbohydrate-based materials.…”

Role of Biotechnology in the Treatment of Polyester Fabric

“…Among these the most important are the esterases, lipases and cutinases. The enzymatic hydrolysis of polyester linkages produces polar hydroxyl and carboxylic groups on the surface [19,20]. Heish and Gram [21] also reported the production of hydroxyl and carboxylic groups due to the hydrolysis of ester linkages in PET and that the enzymatic surface hydrolysis has the advantage of maintaining mechanical stability because the enzyme cannot penetrate the fiber and hence is restricted to reacting on the surface only, thereby increasing the fabric surface wettability.…”

First Generation Biodiesel

“…The transesterification is typically catalyzed by lipases such as Candida antarctica (Watanabe et al, 2002), Candida rugasa (Linko et al, 1998), Pseudomonas cepacia (Shah & Gupta, 2007), Pseudomonas spp. (Lai et al, 1999) or Rhizomucar miehei (Lai et al, 1999).…”