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<p>The conversion of <i>Callistemon viminalis</i> biomass into various products, including chemical compounds, has been observed to have potential biological applications in medicine, pharmaceuticals, and agriculture. Therefore, to add value to this tree, the essential oil (EO) and the recoverable extract (RE) from the fresh green leaves were used as biofungicides for wood and textile treatment against the growth of <i>Fusarium culmorum</i> Fcu761, <i>Aspergillus fumigatus</i> Afu694, and <i>Aspergillus niger</i> Ani245. Gas chromatography-mass spectrometry (GC-MS) equipment was used to identify the chemical components of the EO. The RE’s chemical components were examined using high-pressure liquid chromatography (HPLC) equipment and GC-MS. The EO’s most prevalent chemical components were β-caryophyllene (4.06%) and eucalyptol (64.13%). According to GC-MS analysis, the primary chemicals in the RE were methyl cis-9-octadecenoate (45.00%), betulin (18.14%), and lupeol (12.84%); by HPLC, the primary phenolic compounds were pyrogallol (9.63&#xa0;µg/g) and cinnamic acid (13.85&#xa0;µg/g). When the EO was applied to wood and linen samples, <i>F. culmorum</i> growth was completely inhibited at 25, 50, and 75 µL/mL. The treated wood and linen at 25, 50, and 75 µL/mL of the EO inhibited the growth of <i>A. fumigatus</i> with values of 95.55%, 97.04%, and 99.26%, respectively. At a concentration of 75 µL/mL, <i>A. niger</i> growth was suppressed on wood and linen samples with a 99% value. The RE at 1% showed the highest degree of inhibition (100%) against the growth of <i>F. culmorum</i> and <i>A. niger</i> on wood and linen samples. The application of 1% RE to wood and linen samples resulted in a maximum inhibition value of 99.26% against <i>A. fumigatus</i> growth. The investigation’s findings proved that wood and linen textiles may gain antimicrobial barrier characteristics by the application of an eco-friendly biocide derived from <i>Callistemon viminalis</i> leaves.</p>

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The Essential Oil and Recoverable Extract from Callistemon viminalis Leaves as Wood- and Textile Biofungicides with the GC-MS and HPLC Analyses

  • 期刊论文

  • 发表日期：

    2025年8月8日

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  • Mohamed Z. M. Salem,
  • Wael A. A. Abo-Elgat,
  • Marwa G. S. Farahat,
  • Ahmed A. A. El-Settawy,
  • Shady Selim

摘要

The conversion of Callistemon viminalis biomass into various products, including chemical compounds, has been observed to have potential biological applications in medicine, pharmaceuticals, and agriculture. Therefore, to add value to this tree, the essential oil (EO) and the recoverable extract (RE) from the fresh green leaves were used as biofungicides for wood and textile treatment against the growth of Fusarium culmorum Fcu761, Aspergillus fumigatus Afu694, and Aspergillus niger Ani245. Gas chromatography-mass spectrometry (GC-MS) equipment was used to identify the chemical components of the EO. The RE’s chemical components were examined using high-pressure liquid chromatography (HPLC) equipment and GC-MS. The EO’s most prevalent chemical components were β-caryophyllene (4.06%) and eucalyptol (64.13%). According to GC-MS analysis, the primary chemicals in the RE were methyl cis-9-octadecenoate (45.00%), betulin (18.14%), and lupeol (12.84%); by HPLC, the primary phenolic compounds were pyrogallol (9.63 µg/g) and cinnamic acid (13.85 µg/g). When the EO was applied to wood and linen samples, F. culmorum growth was completely inhibited at 25, 50, and 75 µL/mL. The treated wood and linen at 25, 50, and 75 µL/mL of the EO inhibited the growth of A. fumigatus with values of 95.55%, 97.04%, and 99.26%, respectively. At a concentration of 75 µL/mL, A. niger growth was suppressed on wood and linen samples with a 99% value. The RE at 1% showed the highest degree of inhibition (100%) against the growth of F. culmorum and A. niger on wood and linen samples. The application of 1% RE to wood and linen samples resulted in a maximum inhibition value of 99.26% against A. fumigatus growth. The investigation’s findings proved that wood and linen textiles may gain antimicrobial barrier characteristics by the application of an eco-friendly biocide derived from Callistemon viminalis leaves.