Reddish brown pigments from Alternaria alternata for textile dyeing and printing

Reddish brown pigment has been extracted from dry mycelium of Alternaria alternata in methanol and then evaluated for dyeing efficacy on cotton fabrics. The pigment producing fungus A. alternata is grown in maize grain broth maintained at pH 6. Shade of Sienna is obtained on cotton. Dyed cotton fabric has recorded a grey scale rating of 2-3 and 4-5 for colour fastness and multi fibre staining respectively. Maximum dye absorption of 63% has been observed on cotton fabrics. The antimicrobial property of dyed fabric is also tested. Potent antimicrobial activity is observed against Staphylococcus epidermis (42 mm) and Streptococcus pyogenes (39 mm)

Growth and Mass Spectrometry Profile of Alternaria Alternata Pigment Grown in Maize Grain extract

Alternaria species are common saprophytes found in a variety of habitats as ubiquitous agents of decay. Alternaria spp. produces about sixty different secondary metabolites. In the present investigation, growth and production of pigment from Alternaria alternata was studied in maize grain extract at pH 4-9. The reddish brown pigment was extracted, estimated and partially purified by fractionation. Through mass spectrometry, major constituents of pigment from Alternaria alternata such as Tenuazoic acid (m/z 198), Stemphyperylenol (m/z 253), Alterperylenol (m/z 351), Alternariol (m/z 259.200), Altenuene (m/z 292), Alternarienoic acid (m/z 279.35) and Alternariol 5 methyl ether (m/z 273.20) were identified. The bio-prospecting of these secondary metabolites in industrial applications is also discussed

<span style="font-size:15.0pt;mso-bidi-font-size: 12.0pt;font-family:"Times New Roman","serif";mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language:HI" lang="EN-GB">Reddish brown pigments from <i style="mso-bidi-font-style:normal">Alternaria alternata</i> for textile dyeing and printing</span>

315-319<span style="font-size:9.0pt;mso-bidi-font-size: 12.0pt;mso-bidi-font-family:" times="" new="" roman";color:black"="" lang="EN-GB">Reddish brown pigment has been extracted from dry mycelium of <i style="mso-bidi-font-style: normal">Alternaria alternata in methanol and then evaluated for dyeing efficacy on cotton fabrics. <span style="font-size:9.0pt; mso-bidi-font-size:12.0pt;mso-fareast-font-family:AdvGulliv-R;mso-bidi-font-style: italic" lang="EN-GB">The pigment producing fungus A. alternata is grown in maize grain broth maintained at <span style="font-size:9.0pt;mso-bidi-font-size:12.0pt;mso-fareast-font-family: AdvGulliv-R" lang="EN-GB">p<span style="font-size:9.0pt;mso-bidi-font-size: 12.0pt;mso-fareast-font-family:AdvGulliv-R;mso-bidi-font-style:italic" lang="EN-GB">H 6. <span style="font-size:9.0pt;mso-bidi-font-size:12.0pt;mso-bidi-font-family: " times="" new="" roman";color:black"="" lang="EN-GB">Shade of Sienna is obtained on cotton. Dyed cotton fabric has recorded a grey scale rating of 2-3 and 4-5 for colour fastness and multi fibre staining respectively. Maximum dye absorption of 63% has been observed on cotton fabrics. The antimicrobial property of dyed fabric is also tested. Potent <span style="font-size:9.0pt;mso-bidi-font-size:12.0pt;mso-bidi-font-family: " times="" new="" roman""="" lang="EN-GB">antimicrobial activity is observed against Staphylococcus epidermis (42 mm) and Streptococcus pyogenes (39 mm). </span