Judul: Kualitas Fisik dan Kimiawi Silase Tanaman Sorgum Manis (Sorghum bicolor L. Moench) Umur 70 Hari dengan Penambahan Aditif
Abstrak: This research was aimed to determine physical and chemical quality of sweet sorghum plant (Sorghum bicolor L. Moench) silage at 70 d harvesting time with additive inclusion of 3% rice bran (w/w) and 3% fermented sorghum extract (v/w). Experimental design used completely randomized design with three treatments and 6 replicates. Treatments consisted of P0 (control), P1 (sweet sorghum plant silage with 3% rice bran), and P2 (sweet sorghum plant with 3% fermented sorghum extract). Measured parameters were quality of plant, physical and fermentation characteristics of silage. Results showed that physical characteristics of silage at 70 d harvesting time of plant was similar at different treatment. However, fermentation characteristics were better at with or without 3% fermented sorghum extract compared to 3% rice bran inclusion treatment
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Judul: Pengaruh Cara Perendaman Pada Pembuatan Sorgum(Sorghum Bicolor (L.) Moench) Instan
Abstrak: In Indonesia, rice consumption is increasing. National rice consumption reach 139 Kg per kapita per year and it is the biggest in the world. In order to have national food security, it is important to create food diversification for providing staple food alternative so as to reduce rice consumption. Sorghum is a kind of cerealia that can be a staple food alternative. This research aim to choose the right method of intstant sorghumpreparationwith good porosity and quick rehidration time. The research was divided in two steps. The first step was the soaking treatment of sorghum grain with 0.2% Na2HPO4, 1% Na-citrate and 0.2% Na2HPO4 + 1% Na-citrate(1:1). In this step, the good instant sorghum and preferred by consumer was instant sorghum that soaked with 0.2% Na2HPO4.The specification of this productwas quick rehydration time within 7.21 minute, rehydration ratio of 2.33 g/g, bulk porocity of54.81% and level of likeness 4.55 (like). The secound step was to conduct treatment of soaking at 25 oC, 35 oC, 45 oC, 50 oC and 60 oC with 0.2% Na2HPO4.Based on such criteria, the best instant sorghum was produced on the soaking in 60 oC. However, the anova statictic showed that no difference occurs amongst the soaking temperature of 45 oC, 50 oC and 60 oC. Therefore, the sampel with 45 oC of soaking temperature is chosen. The moisture content of the samples showed no signifance difference in the range of 6.21% - 7.67%. The protein content ranged between 7.95%-8.00%. The sample soaked in 0.2% Na2HPO4 soaking at 45 oC has the highets consument’s organoleptic acceptability.
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Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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