Abstract
Determining the right time to harvest is very important to do for agricultural commodities. This is related to post-harvest handling and extending the shelf life of fruits. Determining the level of melon maturity is still done manually by tapping the surface of the fruit by hand, but this method is still subjective. This research aims to study the maturity level of the 'Premier' melon to determine the appropriate harvest time based on acoustic properties and its relationship to the physic-chemical properties of the melon using a self-made tapping device. Based on the results obtained, the acoustic properties parameters showed a strong enough relationship to the physico-chemical parameters of melons. Based on linear regression analysis, it can be seen that the best acoustic parameters in estimating and determining the right harvest time for melons are the dominant frequency (f), magnitude (M), and zero moment power (Mo). 'Premier' melons can be harvested when the dominant frequency (f) is ≤ 219.92 Hz with a magnitude (M) of ≤ 39.72 dB, and the zero moment power (Mo) value is ≤ 68.99 according to the actual harvest age in the field conducted by farmers at the harvest age of 64 DAP.
Highlights
Bahan dan AlatBahan yang digunakan dalam penelitian ini adalah melon ‘Premier’ (Cucumis melo L.) yang diperoleh dari kebun petani di wilayah Kabupaten Kulon Progo, Yogyakarta dengan 4 taraf umur kematangan yakni 46, 52, 58 dan 64 hari setelah tanam (HST)
Melon (Cucumis melo L.) merupakan nama buah sekaligus tanaman yang masuk ke dalam suku labu-labuan atau Cucurbitaceae (Wijayanti, 2016)
Quality changes in cantaloupe during growth, maturation, and in stored fresh-cut cubes prepared from fruit harvested at various maturities
Summary
Bahan yang digunakan dalam penelitian ini adalah melon ‘Premier’ (Cucumis melo L.) yang diperoleh dari kebun petani di wilayah Kabupaten Kulon Progo, Yogyakarta dengan 4 taraf umur kematangan yakni 46, 52, 58 dan 64 hari setelah tanam (HST). Alat dan bahan yang digunakan dalam penelitian ini adalah alat pengetuk yang dibangun sendiri dan sebuah laptop sebagai alat untuk akuisisi data sifat akustik. Prinsip kerja alat pengetuk tersebut adalah menggantikan tepukan tangan untuk mengurangi subjektivitas pengukuran. Digunakan alat pendukung dalam mengukur nilai sifat fisiko-kimia antara lain bobot buah, warna, kekerasan, dan total padatan terlarut (TPT). Color meter ‘SC10’ digunakan untuk mengukur parameter warna internal daging buah melon (L, a*, b*). Alat pengukur kekerasan daging buah terdiri dari laptop, load cell dengan tipe ‘S LAS-100 kg’ serta interface ‘Loadstar LV-1000.
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