Ravindra K B

@bietdvg.edu

Associate Professor, Dept. of Textile Technology
Bapuji Institute of Engineering and Technology, Davangere

Ravindra K B


               Download Compact PDF  
https://researchid.co/ravindrakb

EDUCATION

M.Tech. Textile Tech, PhD

RESEARCH INTERESTS

Weaving, Finishing
4

Scopus Publications

Scopus Publications

  • Use of essential oils as bioactive substances for antimicrobial finishing of fabrics
    Indian Journal of Fibre and Textile Research, 2022
    Antimicrobial compounds (essential oils) have been extracted from natural spices, such as oregano and cinnamon, using organic solvent (ethylene) by soxhlet apparatus. The above bioactive agents (5% & 10 % owf separately for both agents) are applied separately on plain cotton and polyester/cotton woven fabrics using pad-dry-cure process. For fixation of the finishing agents, glutaraldehyde (8% owf) has been used as a cross-linking agent along with sodium hypophosphite (2% owf) as the catalyst. Evaluation of the antimicrobial activity of untreated and treated fabrics has been performed quantitatively by percentage reduction test against test organisms Gram-positive bacteria Staphylococcus aureus and Gram-negative bacteria Escherichia coli . The results indicate that treated fabrics register >90% antimicrobial activity against S. aureus and E. coli bacterial strains. After 10 washes, the efficacy of antimicrobial activity is reduced by 10-20% only. A small decrease in flexibility, breaking strength and elongation properties is observed for treated fabrics. However, treated fabrics show enhanced crease recovery.
  • Investigation of antimicrobial activity of fabrics dyed with plant based natural dyes
    Asian Dyer, 2022
  • Study of Antimicrobial Properties of Fabrics Treated with Ocimum Sanctum L (tulsi) Extract as a Natural Active Agent
    K. B. Ravindra, K. Murugesh Babu
    Journal of Natural Fibers, 2016
    The present study was aimed at development of microbial resistant textile product using a natural bioactive agent. Ocimum sanctum leaf extract was applied on cotton and polyester/cotton blended fabrics for imparting antibacterial properties to the textile product for health care applications. The fabrics were treated with herbal extract of different concentrations, along with glutaraldehyde as cross-linking agent and sodium hypophosphite as catalyst by exhaust method. Antimicrobial assessment was performed quantitatively by percentage reduction test (AATCC-147-1998) against test organisms gram-positive bacteria staphylococcus aureus (ATCC 6538) and gram-negative bacteria Escherichia coli (ATCC 11230). The results provided evidence that the treated fabric inhibited the growth of gram-positive bacteria by more than 92% as compared to the control samples. Gas chromatography mass spectrometry analysis confirmed the presence of eugenol in Ocimum sanctum extract. Although, the treated fabrics showed enhanced crease recovery property, there was a marginal reduction in tensile properties. Improvement in crease recovery property of treated blended fabric was slightly less as compared to treated cotton fabric. The antimicrobial treatment negatively affects the bending properties and this negative effect was found to be slightly less for blended fabric as compared to pure cotton fabric.
  • Bioactive antimicrobial agents for finishing of textiles for health care products
    K. Murugesh Babu, K.B. Ravindra
    Journal of the Textile Institute, 2015
    Various antimicrobial textile materials are developed using a variety of active agents which include synthetic antimicrobial agents such as triclosan, metal and their salts, phenols, quaternary ammonium compounds, and organometallics. Although synthetic antimicrobial agents effectively inhibit the growth of microbes, most of them are toxic, can cause adverse effects on human health, and have environmental issues. Present studies prove that several plant extracts could be effective against both gram-positive and gram-negative bacteria depending on the type of components present in the plant extract. Hence, the research on eco-friendly antimicrobial agents and their application on various textile products gain worldwide importance. Natural antimicrobial compounds derived from plants such as neem, tea tree, azuki beans, aloe vera, tulsi leaves (Ocimum sanctum), clove oil, pomegranate rind, turmeric, eucalyptus oil, onion skin, and pulp extracts, are being used in the finishing of textiles. This paper highlights the possibilities of using these bioactive substances for imparting antimicrobial property to the textiles for developing health care products.