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<p>A mixture extract of alum and turmeric was used to study its antibacterial effect against four types of bacteria, <i>Staphylococcus epidermidis</i>, <i>Streptococcus Pyogenes</i>, <i>Klebsiella</i> and <i>Escherichia coli</i>. The extract was exposed to a laser with energy of 300&#xa0;mJ and different pulse numbers (150, 300, and 500). The effect of laser exposure on the diameter of the mixture particles was observed, as was the effect of laser with different pulses on the energy gaps and size of the extract components. This change in the energy gap plays an important role in the effect of the extract on the optical properties of the solution and its antibacterial. The results showed that the material turned into a nano material when the number of pulses increased from 150 to 300, where the diameter rate decreased. With the increase in the number of pulses to 500, an increase in the diameter rate was observed again, indicating physical changes in the extract that may be due to aggregation of particles or other structural changes due to accumulated energy. These results indicate that controlling the number of pulses can have an important effect on the properties of the extract and its effectiveness as an antibacterial.</p>

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Effect of laser pulses (Nd:YAG) 1064 nm on the physical properties of alum and turmeric extracts and antibacterial efficacy

  • 期刊论文

  • 发表日期：

    2025年5月22日

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  • Neean Fareed Majeed,
  • Shahad Thaffer Naser,
  • Alyaa Hussein Ali

摘要

A mixture extract of alum and turmeric was used to study its antibacterial effect against four types of bacteria, Staphylococcus epidermidis, Streptococcus Pyogenes, Klebsiella and Escherichia coli. The extract was exposed to a laser with energy of 300 mJ and different pulse numbers (150, 300, and 500). The effect of laser exposure on the diameter of the mixture particles was observed, as was the effect of laser with different pulses on the energy gaps and size of the extract components. This change in the energy gap plays an important role in the effect of the extract on the optical properties of the solution and its antibacterial. The results showed that the material turned into a nano material when the number of pulses increased from 150 to 300, where the diameter rate decreased. With the increase in the number of pulses to 500, an increase in the diameter rate was observed again, indicating physical changes in the extract that may be due to aggregation of particles or other structural changes due to accumulated energy. These results indicate that controlling the number of pulses can have an important effect on the properties of the extract and its effectiveness as an antibacterial.