Permeabilization of baker's yeast with N-lauroyl sarcosine.
N-Lauroyl sarcosine (LS), a cationic, non-toxic and biodegradable detergent readily permeabilized whole cells of baker's yeast (Saccharomyces cerevisiae). Permeabilization was carried out to increase assayable cellular catalase activity, an enzyme of great physiological and industrial importance, and to release 5'-nucleotides which find food/nutritional applications. The event of permeabilization was concentration, time and temperature dependent. Maximum permeabilization of yeast cells were observed when 1 g wet weight (0.2 g dry wt) of cells were permeabilized with 1.0 ml of 2% LS at 45 degrees C for 15 min. LS-permeabilized cells showed 350-fold increase in catalase activity and the supernatant obtained after permeabilization was rich in 5'-nucleotides. LS-permeabilized baker's yeast cells can be used as a source of biocatalyst and to isolate valuable by-products.
Abraham
Jessy
J
Department of Biochemistry and Nutrition, Central Food Technological Research Institute, Mysore, 570013, India. jessy1994@yahoo.com
Bhat
S G
SG
D002375:Catalepsy / Q000378:metabolism; D002463:Cell Membrane Permeability / Q000187:drug effects*; D003902:Detergents / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D009711:Nucleotides / Q000302:isolation & purification; D012441:Saccharomyces cerevisiae / Q000187:drug effects*; D029701:Saccharomyces cerevisiae Proteins / Q000378:metabolism; D012521:Sarcosine / Q000031:analogs & derivatives* / Q000494:pharmacology; D013696:Temperature; D013997:Time Factors
D003902:Detergents; D009711:Nucleotides; D029701:Saccharomyces cerevisiae Proteins; C025231:sarkosyl; D012521:Sarcosine