OPTIMASI RENDEMEN EKSTRAKSI LESITIN DARI MINYAK KEDELAI VARIETAS ANJASMORO DENGAN WATER DEGUMMING. (Indonesian)

Yield Optimization of Lecithin Extraction of Anjasmoro Variety Soybean Oil by Water Degumming. (English)

Lecithin is one of natural emulsifiers widely used in food industries. The main source of lecithin is soybean and it is obtained during water degumming in soybean oil purification. This research was aimed to optimize the yield of lecithin during water degumming of Anjasmoro variety soybean oil by response surface methodology. The factors optimized were added water (%), temperature (ºC), and extraction time (minute). The relationship between lecithin yield and the parameters was quadratic. The response increased up to a certain point, and then decreased. Optimum water degumming was obtained at water additon of 2.95%, temperature of 61.96C, and extraction time of 30.02 minutes. At optimum condition, the lecithin yield was 1.55% and the phosphor content was 3865.30 ppm suggesting lecithin purity of 56.24%. Verification showed that the yield was close to the prediction value of 1.49%. The purification process resulted in lecithin purity of 83.96% which was in compliance with the legal purity specification of food grade lecithin. [ABSTRACT FROM AUTHOR]

Lesitin merupakan pengemulsi alami yang paling banyak digunakan di industri pangan. Sumber utama lesitin adalah kedelai dan lesitin diperoleh dari proses penghilangan gum pada proses pemurnian minyak kedelai. Penelitian ini bertujuan untuk mengoptimasi rendemen lesitin pada peghilangan gum (water degumming) minyak kedelai varietas Anjasmoro menggunakan metodologi permukaan respon. Faktor yang dioptimasi adalah tingkat penambahan air (%), suhu (C), and waktu proses (menit). Hubungan antara rendemen lesitin dan semua faktor bersifat kuadratik. Respon meningkat sampai titik tertentu dan kemudian menurun. Kondisi water degumming optimum diperoleh pada tingkat penambahan air 2.95%, suhu 61.96C, dan waktu proses 30.02 menit. Pada kondisi optimum ini, rendemen yang diperoleh adalah 1.55% dan kadar fos for 3865.30 ppm atau kemurnian lesitin 56.24%. Verifikasi menunjukkan rendemen lesitin hampir mendekati nilai prediksi yaitu 1.49%. Pemurnian terhadap lesitin menghasilkan lesitin dengan kemurnian 83.96 yang sesuai dengan standar kemurnian lesitin untuk pangan. [ABSTRACT FROM AUTHOR]

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