Studi Karakteristik Laju Respirasi Alpukat Tongar pada Berbagai Konsentrasi Oksigen selama Penyimpanan Dingin
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Abstract
Alpukat varietas Tongar merupakan buah klimakterik yang memiliki laju respirasi tinggi setelah panen sehingga mudah mengalami penurunan mutu dan kerusakan. Pengendalian kondisi penyimpanan, khususnya konsentrasi O₂ dan suhu, sangat penting untuk memperlambat proses respirasi dan memperpanjang umur simpan. Penelitian ini bertujuan untuk menganalisis karakteristik laju respirasi alpukat Tongar pada berbagai konsentrasi O₂ selama penyimpanan pada suhu dingin (10°C). Pengukuran laju respirasi dilakukan menggunakan metode aliran kontinu (flow-through method) dengan perlakuan konsentrasi O₂ sebesar 2%, 4%, 9%, dan 20%. Parameter yang diamati meliputi laju konsumsi O₂ dan laju produksi CO₂ selama 14 jam penyimpanan. Hasil penelitian menunjukkan bahwa laju konsumsi O₂ menurun seiring waktu pada seluruh perlakuan, dengan nilai tertinggi pada konsentrasi 20% O₂ dan terendah pada 9% O₂. Sebaliknya, laju produksi CO₂ meningkat selama penyimpanan, dengan nilai tertinggi juga ditemukan pada konsentrasi 20% O₂, sedangkan konsentrasi 2% menghasilkan produksi CO₂ terendah. Hasil ini menunjukkan bahwa konsentrasi O₂ berpengaruh terhadap laju respirasi alpukat Tongar. Konsentrasi O₂ rendah efektif menekan respirasi, namun perlu dikontrol agar tidak memicu kondisi anaerob. Dengan demikian, pengaturan konsentrasi O₂ dan suhu penyimpanan yang tepat berpotensi mempertahankan mutu dan memperpanjang umur simpan alpukat Tongar.
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