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<p>In this study, two synthesized pyrimidine derivatives (<b>2a</b> and <b>2b</b>) were employed as modifiers for two textile substrates: 100% “Cotton” gauze (C) and 50/50% “Cotton/PET” (C/PET) to prepare filters for crude milk. The fabrics were modified using the pad/dry/curing technique. The effect of filtration on the shelf life of raw milk stored at temperatures of 20 and 5&#xa0;°C was investigated using fabric filters. The chemical composition analysis of raw and filtered milk, including fat, protein, lactose, and solid non-fat content, was assessed. Similarly, a clot-on-boiling test, pH, and microbial content were investigated. The shelf life of the milk was extended from 8 to 20&#xa0;h and from 4 to 6&#xa0;days by filtration for samples stored at 20 and 5&#xa0;°C, respectively, without any significant differences in chemical composition. Antibacterial activity of all treated fabrics and filtered milk was evaluated against pathogenic bacteria, Coliform, “<i>E. coli</i>”, and total molds, and the results showed high antimicrobial activity. The cytotoxicity of treated fabrics, as well as pyrimidine derivatives, was tested and displayed no cytotoxicity performance.</p>

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Cellulosic Fabric Modification Using Pyrimidine Derivatives for Extending the Shelf Life of Raw Milk

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月8日

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  • El-Sayed M. Abdeen,
  • Ahmed E. Abdelhamid,
  • A. Amr,
  • Osama M. Darwesh,
  • Ahmed A. El-Sayed

摘要

In this study, two synthesized pyrimidine derivatives (2a and 2b) were employed as modifiers for two textile substrates: 100% “Cotton” gauze (C) and 50/50% “Cotton/PET” (C/PET) to prepare filters for crude milk. The fabrics were modified using the pad/dry/curing technique. The effect of filtration on the shelf life of raw milk stored at temperatures of 20 and 5 °C was investigated using fabric filters. The chemical composition analysis of raw and filtered milk, including fat, protein, lactose, and solid non-fat content, was assessed. Similarly, a clot-on-boiling test, pH, and microbial content were investigated. The shelf life of the milk was extended from 8 to 20 h and from 4 to 6 days by filtration for samples stored at 20 and 5 °C, respectively, without any significant differences in chemical composition. Antibacterial activity of all treated fabrics and filtered milk was evaluated against pathogenic bacteria, Coliform, “E. coli”, and total molds, and the results showed high antimicrobial activity. The cytotoxicity of treated fabrics, as well as pyrimidine derivatives, was tested and displayed no cytotoxicity performance.