A study on the antimicrobial efficacy of RF oxygen plasma and neem extract treated cotton fabrics

Investigation on the effect of RF air plasma and neem leaf extract treatment on the surface modification and antimicrobial activity of cotton fabric

“…The carbonyl groups increase the hydrophilicity [5,[19][20][21][22] and hence the uptake of the antimicrobial finish. This in turn improves its antimicrobial efficacy.…”

“…Several researchers throughout the world have reported about the surface modification of the polymer substrate by low temperature plasma treatment [3][4][5]. As a continuation of our previous work [5], the main objective of the present study was to improve the hydrophilicity of the cotton fabric by RF air plasma treatment and to analyse the increase in the antimicrobial activity when treated with the neem leaf extract (azadirachtin).…”

“…As a continuation of our previous work [5], the main objective of the present study was to improve the hydrophilicity of the cotton fabric by RF air plasma treatment and to analyse the increase in the antimicrobial activity when treated with the neem leaf extract (azadirachtin). An attempt has also been made to understand the molecular interaction between the plasma treated fabric and the antimicrobial finish.…”

Investigation on the Enhancement of Antimicrobial Activity of Neem Leaf Extract Treated Cotton Fabric Using Air and Oxygen DC Plasma

“…This reaction leads to oxidation of hydroxyl groups to aldehyde and on further oxidation to carboxylic acids that has an increased polarity. This improves the hydrophilicity of the cotton fabric [23][24][25][26][27]. In the current work the presence of aldehyde has been confirmed using colorimetric test and the carboxyl group content in the samples has been estimated using sodium bicarbonatesodium chloride test.…”

Ayurvedic preparation from Azadirachta indica, Terminalia chebula, Hemigraphis colorata extracts and Its Antimicrobial investigation

“…The importance of this medicinal plant is more evident from the report of US National Academy of science publication in 1992 with a title called "Neem-a tree for solving global problem" [16]. It is established in many scientific studies that neem seeds contain chemical compounds to control more than 100 species of insects and microorganism [17]. Three different forms of neem products such as aqueous extract, seed oil, seed powder have been used extensively against microorganisms.…”