Potential of a novel thermotolerant lipase Bacillus stearothermophilus nr22 (Lip.nr-22) as additive in high temperature operated-neutral pH liquid detergent

• Published in: Key Engineering Materials
• Main Author: Him N.R.N.; Azmi N.S.
• Format: Conference paper
• Language: English
• Published: Trans Tech Publications Ltd 2017
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019708789&doi=10.4028%2fwww.scientific.net%2fKEM.735.136&partnerID=40&md5=eefec8d5e4d8997d258bba704dbba11a

Enzyme-added detergent must have the capability to operate at high temperature to support the enzyme proteins to clean soiled-fabrics at optimum conditions. Lipase from Bacillus stearothermophilus nr22 (Lip.nr-22) has improved the oil removal from soiled-cotton fabric by 38.8-51.4% in 4 types of local commercial detergents. The later was the oil removal from an unrevealed detergent. The optimum conditions were 108U/ml Lip.nr-22 in 0.1M, pH 7.0, washing temperature and washing time interval as 80°C and 40 min, respectively; shaking wash at 300 rpm and percentage of detergent concentration as 0.5. Lip.nr-22 is a very potential enzyme in high temperature-neutral pH operated laundry detergent formulations. It has exhibited a very excellent thermostability at 80°C, was very stable with surfactants, commercial detergents as well as with oxidizing agents (H2O2, NaBO3H2O and NaClO). Lip.nr-22 as additive in detergent formulation is a promise for better detergent formulation. © 2017 Trans Tech Publications.