Enzymatic Modification of Proteins in Foodstuffs

Enzymatic modification of proteins with a geranylgeranyl isoprenoid.

The prenylation of several proteins involved in oncogenesis and signal transduction plays an essential role in regulating their biological activities. Two distinct isoprenoids are known to be involved in this modification, the 15-carbon farnesyl and 20-carbon geranylgeranyl groups. Thus far, identified farnesylated proteins contain methionine or serine at the COOH terminus, while those modified...

Detection of Genetic Modification 'ac2' in Potato Foodstuffs

The genetic modification 'ac2' is based on the insertion and expression of ac2 gene, originally found in seeds of amaranth (Amaranthus caudatus), into the genome of potatoes (Solanum tuberosum). The purpose of the present study is to develop a PCR method for the detection of the mentioned genetically modified potatoes in various foodstuffs. The method was used to test twenty different potato-ba...

Enzymatic modification of phospholipids Identification

Enzymatic Modification of Paper Fibres

The enzymatic mode of action in paper fibre upgrading is still uncertain. In an attempt to clarify how enzymes modify pulp and paper properties, several parameters were analysed in the present work: (i) thermal analysis of the water–solid surface interactions; (ii) fibre cake permeability; (iii) particle size analysis. The results obtained suggest that enzymes modify the interfacial properties ...

Enzymatic Modification of Polyethersulfone Membranes

Enzymatic modification of polyethersulfone (PES) membranes has been found not only feasible, but also an environmentally attractive way to vary surface properties systematically. In this paper, we summarize the effect of modification layers on protein adsorption and bacterial adhesion on PES membranes and surfaces. The enzyme laccase was used to covalently bind (poly)phenolic acids to the membr...