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      Optimasi Konsentrasi Ozon dan Waktu Pencucian untuk Mempertahankan Kualitas Mikrobiologi dan Umur Simpan Pakcoy (Brassica rapa L.)

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      Date
      2025
      Author
      Gusdian, Zahra Anastasya
      Purwanto, Yohanes Aris
      Sugiarto, Anto Tri
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      Abstract
      Pakcoy merupakan salah satu komoditas sayuran yang paling popular di kalangan konsumen Indonesia. Peningkatan permintaan tidak diiringi dengan peningkatan hasil produksi, akibat kerugian pascapanen baik dari segi kualitas dan kuantitas, mulai dari panen hingga tingkat konsumen. Jika tidak ditangani dengan baik, pakcoy rentan mengalami kerusakan dan umur simpan relatif singkat hanya 2-3 hari. Teknologi ozonasi menawarkan Solusi potensial dengan menghambat pertumbuhan mikroba dan memperpanjang umur simpan pakcoy. Penelitian ini bertujuan untuk menentukan kombinasi optimal konsentrasi ozon dan waktu pencucian yang efektif dalam mempertahankan kualitas mikrobiologi dan memperpanjang umur simpan pakcoy. Proses pencucian dilakukan menggunakan air yang mnegandung ozon dengan konsentrasi 1 ppm dan 2 ppm, dengan waktu pencucian 1 menit dan 2 menit. Parameter utama yang diukur adalah pertumbuhan mikroba, yang dievaluasi melalui analisis Total Plate Count (TPC). Perlakuan dengan ozon 2 ppm selama 2 menit menghasilkan pengurangan mikroba paling efektif, ditunjukkan oleh nilai TPC sebesar 2,75 × 10³ CFU/g. Selain itu, pakcoy yang dicuci dengan ozon 2 ppm selama 1 menit dan 2 menit menunjukkan umur simpan terpanjang, mencapai 5 hari.
       
      Pakcoy is one of the most popular vegetable commodities among Indonesian consumers. The increasing demand has not been matched by higher production yields, due to postharvest losses in both quality and quantity from harvest to consumer level. If not adequately handled, pakcoy is prone to rapid deterioration with a relatively short shelf life of only 2–3 days. Ozonation technology offers a potential solution by inhibiting microbial growth and extending the shelf life of Pakcoy. This study aimed to determine the optimal combination of ozone concentration and washing duration that effectively preserves microbiological quality and extends pakcoy’s shelf life. The washing process was carried out using water containing ozone at concentrations of 1 ppm and two ppm, with washing durations of 1 minute and 2 minutes. The primary parameter measured was microbial growth, assessed via Total Plate Count (TPC) analysis. The treatment with two ppm ozone for 2 minutes resulted in the most effective microbial reduction, indicated by a TPC value of 2.75 × 10³ CFU/g. Furthermore, Pakcoy washed with two ppm ozone for both 1 and 2 minutes showed the longest shelf life, extending up to 5 days.
       
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      http://repository.ipb.ac.id/handle/123456789/166840
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      • UT - Agricultural and Biosystem Engineering [3593]

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      Indonesia DSpace Group 
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