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<p>Activated Carbon (AC) derived from waste coffee grounds (WCG) has been utilized in a wide range of applications, particularly as food packaging. AC incorporated into Polyvinyl Alcohol (PVA)/Chitosan (CH) demonstrates excellent characteristics that promote sustainable food packaging. Nevertheless, there is only a limited study on PVA/CH/AC sheet evaluation as food packaging, notably the transparent one. Thus, this research provided a preliminary study on transparent PVA/CH/AC and its potential evaluation as sustainable food packaging. AC varied at 0.04–0.16&#xa0;g to create transparent sheets yet exhibited considerable properties as food packaging. Our result revealed that the PVA/CH/AC sheet possesses excellent mechanical properties as well as water solubility. Interestingly, the PVA/CH/AC sheet showed an inhibition zone of 7.5&#xa0;mm and 4.5&#xa0;mm against <i>E. coli</i> and <i>S. aureus</i> bacteria. More importantly, our PVA/CH/AC sheet exhibited significant absorption of ultraviolet light, which is critical in extending food shelf life while preserving nutritional quality. Furthermore, this study will be beneficial for the future development of smart-transparent-food-packaging.</p>

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Agri-food waste utilization as activated carbon in PVA-chitosan sheets for transparent food packaging potential

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • Ari Dwi Nugraheni,
  • Rini Murtafi’atin,
  • Nurmayasari,
  • Nurul Fajariah,
  • Affifah Dias Salsabilla,
  • Juliasih Partini,
  • Chotimah

摘要

Activated Carbon (AC) derived from waste coffee grounds (WCG) has been utilized in a wide range of applications, particularly as food packaging. AC incorporated into Polyvinyl Alcohol (PVA)/Chitosan (CH) demonstrates excellent characteristics that promote sustainable food packaging. Nevertheless, there is only a limited study on PVA/CH/AC sheet evaluation as food packaging, notably the transparent one. Thus, this research provided a preliminary study on transparent PVA/CH/AC and its potential evaluation as sustainable food packaging. AC varied at 0.04–0.16 g to create transparent sheets yet exhibited considerable properties as food packaging. Our result revealed that the PVA/CH/AC sheet possesses excellent mechanical properties as well as water solubility. Interestingly, the PVA/CH/AC sheet showed an inhibition zone of 7.5 mm and 4.5 mm against E. coli and S. aureus bacteria. More importantly, our PVA/CH/AC sheet exhibited significant absorption of ultraviolet light, which is critical in extending food shelf life while preserving nutritional quality. Furthermore, this study will be beneficial for the future development of smart-transparent-food-packaging.