Bioscouring and bleaching of knitted cotton fabrics in one‐step process using enzymatically generated hydrogen peroxide

Abstract

This research involves the study of knitted cotton fabric bleaching using hydrogen peroxide generated enzymatically. Initially the bioscouring was performed using the enzymes cellulose (EC. 3.2.1.4), pectinase (EC. 4.2.2.2), and lipase (EC. 3.1.1.3) to remove impurities. Then bleaching was performed using hydrogen peroxide, which was enzymatically produced by glucose oxidase (EC. 1.1.3.4) during oxidation of glucose. The generation of hydrogen peroxide and bleaching were assessed using experimental designs, where it was observed that the most significant effect to generate peroxide was time and for bleaching was the concentration of hydrogen peroxide. The whiteness and hydrophilicity of the treated knitted fabric were evaluated. The whiteness index of the enzymatically bleached fabric was 52 ± 1 °Berger with good hydrophilicity, by capillarity method 5.2 cm in 10 min. The results from this work demonstrate that this process can be an alternative for the textile preparation industry. There is a large reduction in water consumption compared to the conventional process. The water consumption is four times lower than the water consumption of the conventional process.

Pectinases as promising green biocatalysts having broad‐spectrum applications: Recent trends, scope, and relevance

“…124 This process is not energy efficient, and handling of alkaline wastewater generated during this process also requires specialized techniques 125,126 . Hence, enzymatic scouring or bioscouring is an eco‐friendly method that can be used to replace the environmentally dangerous conventional scouring method 127,128 . Pectinase in association with cellulases, amylases, lipases, and hemicellulases have been used for ecologically safe desizing of cotton by minimizing the need for harmful caustic soda.…”

“…125,126 Hence, enzymatic scouring or bioscouring is an eco-friendly method that can be used to replace the environmentally dangerous conventional scouring method. 127,128 Pectinase in association with cellulases, amylases, lipases, and hemicellulases have been used for ecologically safe desizing of cotton by minimizing the need for harmful caustic soda . 129 Although alkaline pectinase has been considered most effective for bioscouring, pectinases stable at acidic and neutral pH have also been explored for this purpose .…”

Analytical Determination of the Optimal Feed Temperature for Hydrogen Peroxide Decomposition Process Occurring in Bioreactor with a Fixed-Bed of Commercial Catalase

“…Biocatalyst deactivation dependent on the substrate concentration (parallel deactivation) is a specific mechanism of deactivation and is related to catalase. This enzyme has been intensively applied for the elimination of residual HP in various domains such as textile, food, and semiconductors industries, as well as waste waters treatment and cosmetics and pharmaceutical formulations in biosensor systems [19][20][21][22].…”

Glucose Oxidase Applications and Comparison of the Activity Assays

“…2018, removal of oxygen and browning control to increase storage time of fruit juices, purees and other stored foods (Parpinello 2002, Isaaksen and Adler-Nissen 1997, Xu et al 2018, Cruz et al 2013). GOD use is also an alternative way to production of H2O2 for textile bleaching (Tzanov et al 2002, Farooq et al 2013, Reis et al 2017, Qui et al 2017 or milk processing (Zhou &Lim 2009, Cruz et al 2013, Cruz et al 2012, Szweda et al 2013, Batista et al 2015. There are several studies about gluconic acid or gluconate salt production by GOD (Huang et al 2019, Han et al 2018, Ramezani et al 2013, Mariam et al 2010, Arimatsu et al 2004, Bao et al 2003, Shah & Kothari, 1993.…”