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Dye yielding potential and antibacterial properties of lichens from Kerala, India

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Title Dye yielding potential and antibacterial properties of lichens from Kerala, India
 
Creator Pius, Catherine
Sequeira, Stephen
 
Subject Antibacterial activity
Banana fibre
Fabric dyeing
Kerala
Lichen
Silk
 
Description 86-93
Lichens are a group of lower plants that adapt to extreme environmental conditions. The utility of lichens is due to the
wide range of secondary metabolites produced by them. The present study is to analyse the dye yielding potential and antibacterial
properties of lichen species Heterodermia boryi, Hypotrachyna cirrhata, and Cladonia fruticulosa collected from
different parts of Kerala. Dyes were extracted using methods such as Ammonia fermentation method (AFM), Di-methyl
sulphoxide extraction method (DEM) and the boiling water method (BWM). The dye extracts were experimented on
mulberry silk and banana fibre. The fibre stability was tested by exposure to sunlight and action with detergent and
shampoo. Most of the dyed colours appeared to be stable. The colours were detected using COSMIN software. The colours
that appeared were mainly shades of brown, khaki, tan and gold. AFM and DEM are better extraction methods than BWM.
To investigate the antibacterial activity, methanol, ethanol, acetone, chloroform and distilled water extracts of lichens were
tested against Gram-positive and negative bacteria along with positive control. Chloroform and acetone extracts showed
exceptional inhibition activity followed by methanol and ethanol and the least activity by distilled water extracts. Extracts of
H. cirrhata and C. fruticulosa showed better antibacterial activity than H. boryi. These results indicate the presence of
different secondary metabolites.
 
Date 2022-05-12T08:50:26Z
2022-05-12T08:50:26Z
2022-03
 
Type Article
 
Identifier 0976-0512 (Online); 0976-0504 (Print)
http://nopr.niscair.res.in/handle/123456789/59692
 
Language en
 
Relation Int. cl. (2021.01)- A61K 36/00, A61P 31/00, A61P 31/04
 
Publisher NIScPR-CSIR, India
 
Source IJNPR Vol.13(1) [March 2022]