Penentuan Tekanan dan Waktu Optimum dalam Pembuatan Serbuk Telur menggunakan Oven Vakum
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Abstract
Penelitian tentang pengeringan telur ayam menggunakan oven vakum dilakukan untuk mendapatkan kondisi terbaik dari serbuk telur, sehingga kualitas tidak berubah. Penelitian pendahuluan dalam mendapatkan air dalam kesetimbangan, menggunakan metode tray drying, dilakukan pada suhu 44°C untuk menjaga degradasi protein. Air dalam telur mencapai kesetimbangan sebesar 4,84%. Penentuan tekanan optimum dilakukan pada oven vakum, dengan variasi tekanan 80, 160, 240, 320, 400 mbar Absolut, didapatkan pada 80 mbar Absolut, yaitu terjadi pengurangan massa telur 33,76 g dan kadar air sebesar 4,76%. Variasi waktu pengeringan pada menit ke 40, 80, 120, 160, dan 200, didapatkan penurunan massa telur pada menit ke 160 sebesar 37,87 g dengan kadar air sebesar 1,12%. Analisis kadar protein serbuk telur menggunakan spektrofotometri metode biuret, didapatkan peningkatan 15,37 – 80,66% dan lemak menggunakan ekstraksi soxhlet terjadi penurunan dari 43,53 - 37,47%. dari menit 80 sampai 160. Penampilan serbuk telur setelah 25 hari menunjukkan hasil yang baik, karena tidak berubah warna, bau dan fisik.
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