Pemanfaatan Sari Buah Naga Merah (Hylocereus polyrhizus) dalam Pembuatan Es Krim Susu Kedelai [Utilization of Red Dragon Fruit (Hylocereus polyrhizus) Juice in Soy Ice Cream Making]
Abstract
Bahasa Indonesia Abstract:
Buah naga merah (Hylocereus polyrhizus) mengandung betalain yang dapat digunakan sebagai pewarna alami yang memiliki sifat antioksidan. Penerimaan es krim susu kedelai yang rendah yang biasanya disebabkan oleh aroma langu dapat dikurangi dengan penambahan antioksidan dari sari buah naga. Penelitian ini bertujuan menentukan pengaruh penambahan sari buah merah dan pengaruh jenis dan konsentrasi stabilizer terhadap karakteristik fisik es krim susu kedelai. Pada penelitian tahap pertama, es krim susu kedelai dibuat dengan berbagai konsentrasi sari buah naga (0%, 5%, 10%, 15%, dan 20%). Es krim susu kedelai dengan penambahan 20% sari buah naga merah merupakan formulasi terpilih karena memiliki nilai IC50 sebesar 132298±29802 ppm, overrun tertinggi, dan penerimaan organoleptik terbaik. Pada penelitian tahap kedua, es krim susu kedelai dibuat dengan berbagai jenis stabilizer (CMC 0,2%, CMC 0,1% dan k-karagenan 0,1%, dan k-karagenan 0,2%). Es krim susu kedelai dengan penggunaan CMC 0,2% merupakan formulasi terpilih karena memiliki overrun tertinggi (36,44 ± 1,58%) dan waktu leleh terlama (54,00 ± 0,61 menit). Es krim susu kedelai terpilih ini mengandung air sebanyak 61,85%, abu 0,72%, lemak 2,74%, protein 5,65%, dan karbohidrat 29,04%.
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DOI: http://dx.doi.org/10.19166/jstfast.v6i1.5209
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