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Nur Aini
SCOPUS ID: 16052076600 Program Studi Ilmu dan Teknologi Pangan, Universitas Jenderal Soedirman, Jalan Dr. Soeparno, Purwokerto, 53123

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Pengaruh Konsentrasi Kultur dan Prebiotik Ubi Jalar terhadap Sifat Sari Jagung Manis Probiotik Nur Aini; Vincentius Prihananto; Gunawan Wijonarko; Arimah Arimah; Muhammad Syaifudin
agriTECH Vol 37, No 2 (2017)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15631.019 KB) | DOI: 10.22146/agritech.25892

Abstract

Sweet corn extract with the addition of lactic acid bacteria can improve its function as probiotic drinks. Sweet potato as a prebiotic is expected to increase the activity of lactic acid bacteria probiotic sweet corn extract. The use of culture in the making of sweet corn extract probiotics will affect the character of the product. The purpose of this study were: (1) to study the effect of culture concentration on characteristics of probiotic sweet corn extract; (2) to study the effect of red sweet potato extract on characteristics of probiotic sweet corn extract; and (3) to determine the best treatment combination between the culture and the concentration of red sweet potato extract in the production of probiotic sweet corn extract; and comparing commercial in the market. Research using a completely randomized design (CRD) with research factor is the concentration of the culture (2, 3, 4, and 5 %) and red sweet potato extract (5, 10, 15, 20 and 25 %). The results showed that the more the concentration of the culture is added, the number of lactic acid bacteria, total acid and viscosity increase; while pH, total dissolved solids, fat and protein concentration decreased. The more sweet potato extract is added, the total dissolved solids and viscosity increased; while the levels of protein and fat decreases. The best treatment combination was at a concentration of 4 % culture and 15 % sweet potato extract. The products have a pH of 3.88, a viscosity of 261.5 cP, lactic acid levels of 0.87 %, 0.05 % fat content, total dissolved solids 19.10 oBrix, and 3.23 % of total protein. Yoghurt is compliant SNI standard yoghurt, except for protein content was lower at 3.23 (SNI according to at least 3.5). ABSTRAKSari jagung manis dengan penambahan bakteri asam laktat dapat meningkatkan fungsinya sebagai minuman probiotik. Ubi jalar sebagai prebiotik diharapkan meningkatkan aktivitas bakteri asam laktat pada sari jagung manis probiotik. Penggunaan kultur pada pembuatan sari jagung manis probiotik akan mempengaruhi karakter produk. Tujuan penelitian ini adalah: (1) mempelajari pengaruh konsentrasi kultur terhadap sifat jagung manis probiotik; (2) mempelajari pengaruh penambahan ekstrak ubi jalar merah terhadap sifat sari jagung manis probiotik; dan (3) menentukan kombinasi perlakuan terbaik antara konsentrasi kultur dan ekstrak ubi jalar merah dalam pembuatan sari jagung manis probiotik dan membandingkan dengan yoghurt komersial yang telah beredar di pasaran. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan faktor penelitian adalah konsentrasi  kultur (2, 3, 4, dan 5 %) dan ekstrak ubi jalar merah (5, 10, 15, 20 dan 25 %). Hasil penelitian menunjukkan bahwa semakin banyak konsentrasi kultur yang ditambahkan pada pembuatan sari jagung manis probiotik maka jumlah bakteri asam laktat, total asam dan viskositas semakin meningkat; sedangkan pH, total padatan terlarut, kadar lemak dan protein semakin menurun. Semakin banyak ekstrak ubi jalar merah yang ditambahkan pada pembuatan sari jagung manis probiotik maka total padatan terlarut dan viskositas semakin meningkat; sedangkan kadar protein dan lemak semakin menurun. Kombinasi perlakuan paling baik untuk pembuatan sari jagung manis probiotik adalah pada konsentrasi 4 % kultur dan 15 % ekstrak ubi jalar. Produk  memiliki pH 3,88, viskositas 261,5 cP, kadar asam laktat 0,87 %, kadar lemak 0,05 %, total padatan terlarut 19,10 oBrix, dan protein total 3,23 %. Yoghurt ini sudah memenuhi standar SNI yoghurt, kecuali kadar protein yang masih lebih rendah yaitu 3,23 (menurut SNI minimal 3,5).
Pengaruh Fortifikasi Zat Besi terhadap Sifat Kimia dan Sensori Biskuit Ubi Kayu yang Disuplementasi Tepung Ikan-Tempe Retno Setyawati; Nur Aini; Hidayah Dwiyanti
agriTECH Vol 38, No 4 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2666.736 KB) | DOI: 10.22146/agritech.39522

Abstract

The prevalence of anemia in pregnant women in Indonesia in 2013 was still high at 37.1%. The impact of anemia on long-term pregnant women causes a decrease in the quality of human resources. Therefore, it is necessary to provide foods with high iron content and which are easily absorbed. Cassava biscuits that have been enriched with Tempe fish flour and fortified Fe are expected to be an alternative to anemia control and pregnant women PEM through a "food-based" approach. The study aims to produce cassava biscuits supplemented with Tempe fish flour and fortified Fe, so that it contains high protein and Fe and has good sensory properties. The experimental design used in the study was Randomized Block Design with 2 factors: type of fortification (F); FeSO4 (F1); NaFeEDTA (F2), and concentration of fortification (K), i.e. 0 ppm (K1); 30 ppm (K2); 45 ppm (K3); 60 ppm (K4); and 75 ppm (K5). The variables observed included water content, Fe content, free fatty acid levels, and peroxide numbers. While sensory properties are texture, fishy smell, metallic taste, and level of preference. The results showed that fortification with 45 ppm FeSO4 was the best treatment that produced biscuits with the best sensory properties. The biscuits have the characteristics of 6.01±0.54% moisture content, 43.69±0.34 ppm db Fe content, 1.17±0.02% free fat acid content, and 9.66±0.76meq O2 / kg peroxide rate. The sensor characteristics are rather crisp texture, less noticeable fishy aroma, less noticeable metal flavor, and rather preferred taste.