Sifat Kimia Ubi Jalar Ungu berdasarkan Lokasi Panen sebagai Bahan Pangan Fungsional
Keywords:
makanan fungsional, sifat kimia, ubi unguAbstract
Penelitian terdahulu yang telah dilakukan menunjukkan pengaruh luas panen dan perlakuan awal dalam pembuatan tepung ubi jalar ungu terhadap kandungan polifenol, kandungan antosianin dan aktivitas antioksidan. Penelitian ini bertujuan untuk menentukan pengaruh luas tanam yang berbeda dan perlakuan awal pada luas tanam yang berbeda dan perlakuan awal pada pembuatan tepung ubi jalar ungu terhadap karakteristik kimiawi. Ubi jalar ungu diperoleh dari 3 sumber yaitu Boyolali, Karanganyar dan Ngawi kemudian dibuat preparat pembuatan tepung seperti pada penelitian sebelumnya yaitu penggunaan bisulfit, pengukusan dan kombinasi bisulfit dan pengukusan. Tepung ubi ungu Teston termasuk komposisi kimia atau komponen makro. Terdapat pengaruh area panen terhadap kadar air tepung ubi jalar ungu pada berbagai perlakuan awal yang masing-masing memiliki nilai p < 0,05. Tepung ubi jalar ungu dari Karanganyar dan Ngawi menunjukkan adanya pengaruh berbagai perlakuan terhadap kadar abu dengan nilai signifikansi (p=0,005 dan p=0,006). Tepung ubi ungu asal Boyolali tidak memberikan pengaruh apapun terhadap kandungan lemak pada variasi perlakuan awal. Terdapat pengaruh lokasi panen yang bervariasi terhadap sifat kimia tepung ubi jalar ungu. Secara statistik, lokasi panen berpengaruh terhadap karakteristik kimia tepung ubi jalar ungu, termasuk kadar air, protein, pati dan amilosa.
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