Development of Smart Packaging Film Label based on pH Sensor from Natural Source: Red Spinach for Freshness Detector of Meat
Abstract
Abstrak. Smart packaging merupakan salah satu teknologi baru dalam bidang pengemasan yang dapat menginformasikan perubahan yang terjadi pada produk atau lingkungannya seperti suhu, pH, dan pertumbuhan mikroba. Pada penelitian ini akan dikembangkan label film smart packaging berbasis sensor pH dari sumber alami berupa ekstrak bayam merah. Dari hasil penelitian ditemukan bahwa ekstrak bayam merah dengan pH = 2 memiliki nilai serapan yang tinggi, paling asam, dan warna paling solid dibandingkan pH lainnya, dibuktikan dengan hasil UV-Vis dengan puncak tertinggi. Hasil pengujian FTIR menunjukan ekstrak bayam merah masih terdeteksi di dalam sample label film kemasan. Label film dengan konsentrasi ekstrak bayam merah 6%, 8%, dan 10% memiliki hasil uji ketebalan, kuat tarik dan elongasi yang seragam dengan rata-rata nilai untuk uji ketebalan 0,015 mm, uji kuat tarik dengan nilai 5,67 kgf/cm², dan uji elongasi 0,19%. Label film dengan konsentrasi ekstrak bayam merah 6%, 8% dan 10% memiliki warna yang solid dan menghasilkan perubahan warna yang mudah diamati. Tidak hanya itu dalam pengujian fisik, mekanik kerekteristik UV-Vis, FTIR dan perubahan warna nya label film dengan konsentrasi 6%, 8%, 10% memiliki hasil uji yang baik dan dapat diaplikasikan pada kemasan daging.
Abstract. Smart packaging is a new technology in the field of packaging that can inform changes that occur in products or their environment, such as temperature, pH, and microbial growth. In this research a smart packaging film label based on a pH sensor will be developed from a natural source in the form of red spinach extract. From the research results it was found that red spinach extract with pH = 2 had the highest absorption value, the most acidic, and the most solid color compared to other pHs, as evidenced by the UV-Vis results with the highest peaks. The results of the FTIR test showed that red spinach extract was still detected in the sample packaging film labels. Film labels with red spinach extract concentrations of 6%, 8%, and 10% had uniform thickness, tensile strength and elongation test results with an average value for the thickness test of 0.015 mm, tensile strength test with a value of 5.67 kgf/cm², and 0.19% elongation test. Film labels with red spinach extract concentrations of 6%, 8% and 10% have solid colors and produce easily observable color changes. Not only that, in physical testing, mechanical characteristics UV-Vis, FTIR and changes in color, film labels with concentrations of 6%, 8%, 10% have good test results and can be applied to meat packaging.
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DOI: https://doi.org/10.24815/jacps.v12i3.32303
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