Thermostable bacterial laccase for sustainable dyeing using plant phenols.

RSC Adv

Enzyme Technology Laboratory, Department of Chemistry, Indian Institute of Technology Delhi MS 731, Hauz Khas New Delhi 110016 India +91 11 2658 1102 +91 11 2659 1508.

Published: June 2022

Laccase is regarded as an efficacious eco-friendly enzyme in various industries. Thus, various laccases have been explored to mitigate the environmental effects of conventional industrial processing; however, the prospects of laccase in hair dyeing have not been thoroughly explored to date. On account of the adverse environmental and health-related issues posed by chemical hair dyeing, laccase as a natural alternative in dyeing hair has recently gained attention. In this study, we executed hair dyeing with different colours and shades of hair dyes developed from natural plant phenols, including ferulic acid, gallic acid, catechol, and syringaldehyde, catalysed by a novel thermostable bacterial laccase (LacT) from . The dyed hair was characterised in terms of its colourimetric parameters (*, *, and *), colour strength (/), reflectance () and colour durability. * means luminosity and is defined by * values from 0 (black) to 100 (white). A positive value of * means red shades and a negative value indicates green shades. A positive value of * shows yellow shades and a negative value indicates blue shades. Optical microscopy of circular and longitudinal sections of the dyed hair revealed that the laccase-catalysed dyes did not merely stick to the surface; instead, they well-penetrated the hair. Furthermore, the dyeing process did not affect the surface morphology of the dyed hair. The dyed hair also exhibited a desirable range of colour diversity in terms of market-driven demands and showed considerable resistance to fading during shampooing and pH alterations. Post-dyeing, the texture and tensile strength of the dyed hair remained nearly unchanged. Overall, the outcomes suggest that LacT holds high potential to be exploited extensively in the hair dyeing industry as an alternative to chemical hair dyes.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9210865PMC
http://dx.doi.org/10.1039/d2ra02137dDOI Listing

Publication Analysis

Top Keywords

hair dyeing
20
dyed hair
20
hair
13
thermostable bacterial
8
bacterial laccase
8
plant phenols
8
chemical hair
8
hair dyes
8
shades negative
8
negative indicates
8

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!