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Mocaf can be used as an alternative raw material for making complementary food because it has high carbohydrate content. However, the protein content is low so that it is necessary to substitute other ingredients which have high protein content such as soybean. The objective of this study was to characterize the mocaf-based biscuits containing soybean flour at concentrations of 10%, 15%, and 20%, and particle sizes of 420, 250, and 177 µm. Pasting properties of composite flours were evaluated in terms of peak viscosity, breakdown viscosity, setback viscosity, final viscosity, and pasting temperatures, while physicochemical properties of mocaf-based biscuit and microstructures were investigated in terms of moisture, ash, protein, fat, carbohydrate, calorie contents, color, hardness, and fracturability. Higher concentrations of soybean flour were associated with increased ash, protein, and fat content, as well as hardness. Moreover, the hardness of biscuits varied significantly depending on the particle sizes of soybean flour. Finally, the highest protein contents were achieved using 20% soybean flour with a particle size of 420 µm.

<p>Penambahan bahan penstabil dalam pembuatan sari buah bertujuan untuk menjaga kestabilan produk dan tidak terjadi endapan selama penyimpanan. Tujuan penelitian adalah mengetahui pengaruh penambahan bahan penstabil (CMC, Na alginat, dan campuran Na alginat-CMC) dan perbandingan berat (b/b) bubur buah (puree) (pepaya : nanas, 1 : 1, 2 : 1, dan 3:1) terhadap mutu sari buah campuran pepaya-nanas serta mendapatkan bahan penstabil dan perbandingan puree buah yang terbaik pada pembuatan sari buah campuran pepaya-nanas. Penelitian dilakukan di Laboratorium Pengolahan Pascapanen, Pusat Pengembangan Teknologi Tepat Guna LIPI di Kabupaten Subang, Jawa Barat pada bulan Juli–November 2013. Hasil penelitian menunjukkan bahan penstabil yang digunakan dalam pembuatan sari buah campuran pepaya-nanas berpengaruh nyata terhadap viskositas, vitamin C, dan total padatan terlarut, tetapi tidak berpengaruh terhadap total asam dan pH sari buah. Perbandingan puree buah berpengaruh nyata terhadap viskositas, vitamin C, total padatan terlarut, dan pH sari buah, tetapi tidak berpengaruh terhadap total asam. Kombinasi perlakuan bahan penstabil campuran Na alginat-CMC dan penambahan puree buah pepaya : nanas 2 : 1(b/b) adalah perlakuan terbaik sari buah campuran pepaya-nanas dengan karakteristik nilai pH 4,19, viskositas 20,32 cp, kadar vitamin C 9,7 %, total asam tertitrasi 0,39%, total padatan terlarut 10,53oBrix, dan endapan yang terbentuk selama penyimpanan 24%.</p>

In the production of gluten-free noodles by using a single screw extruder, cooking is done at two consecutive stages. Initially, the dough of gluten-free formula is steamed manually at certain times and temperatures. During extrusion, the pre-cooked dough is re-cooked inside the extruder barrel. The purpose of this study was to evaluate the properties of gluten-free noodle (color, texture profile) produced from different production batches (batch 1 to 6) of two different single screw extruders (A: capacity 24 kg/hr, B: capacity 12 kg/hr) by using a single factor completely random design. The results showed that steaming process in batch cause intermitten time for extrusion and affected some non-uniform properties of the gluten-free noodles produced by the two extruders. The two extruders produced noodles with distinctive properties. The noodles from extruder A exhibited the hardness (average 26,925.14 ± 2,355.74gf) and adhesiveness (-7.66 ± 6.41 gs). The noodles of extruder B showed the elongation (157.91 ± 39.67%) and cohesiveness (0.91 ± 0.02).

No abstract