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<p>Today, the demand for food products containing safe and natural preservatives is increasing. In the present study, after preparing a biodegradable coating using cell free supernatant (CFS) obtained from the <i>Lactiplantibacillus plantarum</i> strain CAU5271 and <i>Lepidium perfoliatum</i> seed mucilage (LPSM), fresh beef was coated, and its microbial, physicochemical, and sensory properties were investigated at 4&#xa0;°C for 1, 4, 7, and 10 days. Microbial populations such as total viable count (TVC), psychrotrophic bacteria count (PTC), fungi, and coliforms were evaluated in uncoated samples (control) and samples coated with LPSM, LPSM + 1%CFS, and LPSM + 2%CFS. The results indicated a gradual increase in the number of microorganisms in the meat samples. The highest microbial growth was observed in the control sample. According to the results of the present study, with an increase in the percentage of CFS, microbial growth decreased. The use of the coating led to a significant reduction in moisture loss. Meat samples coated with LPSM + 2%CFS had the lowest pH, peroxide, and thiobarbituric acid levels. In the present study, the amount of hardness loss in coated samples was less than in the control sample, and the total volatile nitrogen (TVB-N) levels of the sample treated with LPSM + 2%CFS significantly decreased. The coating was effective in preserving the color and quality of the meat samples. The highest sensory evaluation score was related to beef samples coated with LPSM + 2%CFS. Overall, the biodegradable LPSM/CFS coating, with its antimicrobial activity and ability to preserve the color, texture, and quality of coated beef samples, has the potential for use as packaging containing natural and generally recognized as safe (GRAS) preservatives to extend the shelf life of beef.</p>

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Natural biodegradable coating containing Qudomeh Shahri mucilage and probiotic metabolites from Lactiplantibacillus plantarum strain CAU5271 for preserving the quality of refrigerated beef

  • 期刊论文

  • 发表日期：

    2026年6月20日

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  • Pegah Namazi,
  • Behrooz Alizadeh Behbahani,
  • Mohammad Noshad,
  • Alireza Vasiee,
  • Morteza Taki,
  • Hossein Jooyandeh

摘要

Today, the demand for food products containing safe and natural preservatives is increasing. In the present study, after preparing a biodegradable coating using cell free supernatant (CFS) obtained from the Lactiplantibacillus plantarum strain CAU5271 and Lepidium perfoliatum seed mucilage (LPSM), fresh beef was coated, and its microbial, physicochemical, and sensory properties were investigated at 4 °C for 1, 4, 7, and 10 days. Microbial populations such as total viable count (TVC), psychrotrophic bacteria count (PTC), fungi, and coliforms were evaluated in uncoated samples (control) and samples coated with LPSM, LPSM + 1%CFS, and LPSM + 2%CFS. The results indicated a gradual increase in the number of microorganisms in the meat samples. The highest microbial growth was observed in the control sample. According to the results of the present study, with an increase in the percentage of CFS, microbial growth decreased. The use of the coating led to a significant reduction in moisture loss. Meat samples coated with LPSM + 2%CFS had the lowest pH, peroxide, and thiobarbituric acid levels. In the present study, the amount of hardness loss in coated samples was less than in the control sample, and the total volatile nitrogen (TVB-N) levels of the sample treated with LPSM + 2%CFS significantly decreased. The coating was effective in preserving the color and quality of the meat samples. The highest sensory evaluation score was related to beef samples coated with LPSM + 2%CFS. Overall, the biodegradable LPSM/CFS coating, with its antimicrobial activity and ability to preserve the color, texture, and quality of coated beef samples, has the potential for use as packaging containing natural and generally recognized as safe (GRAS) preservatives to extend the shelf life of beef.