Judul: Formulasi dan Uji Stabilitas Minuman Fungsional Berbahan Dasar Lintah Laut (Discodoris sp.).
Abstrak: Lintah laut (Discodoris sp.) secara empiris telah dimanfaatkan sebagian orang di pesisir Indonesia untuk menambah stamina dan vitalitas tubuh. Pemanfaatan lintah laut untuk menjadi pangan fungsional yang dapat dikonsumsi secara luas oleh masyarakat masih terbentur pada letak geografis dan cara penyajian. Meskipun serbuk kasar serta ekstrak polar yang bersifat antikolesterolemia dan antioksidan telah dipelajari sebelumnya, namun perlu dilakukan penelitian mengenai formulasi dan uji stabilitas produk untuk memperoleh manfaat dari pangan fungsional berbasis lintah laut. Penelitian ini bertujuan untuk menentukan kondisi penyajian minuman fungsional terbaik untuk mendapatkan aktivitas antioksidan tertinggi, membuktikan pengaruh pencampuran bahan-bahan baku terhadap dampak sinergis antioksidan pada minuman fungsional, dan menentukan formula minuman terbaik yang memiliki masa simpan maksimum melalui pengujian stabilitas produk berdasarkan waktu penyimpanan. Hipotesis penelitian ini adalah kondisi penyajian berpengaruh terhadap aktivitas antioksidan minuman fungsional, konsentrasi dan kombinasi bahan campuran berpengaruh terhadap aktivitas antioksidan formula minuman, dan masa simpan mempengaruhi karakteristik fisik dan kimia produk minuman fungsional
Keyword: 

Judul: Formulasi Minuman Fungsional Omega-3 dari Lintah Laut (Discodoris sp.)
Abstrak: Water resources such as Sea slug (Discodoris sp.) can be made as functional beverages. One of the important compound in Sea slug is omega-3 fatty acid. Omega-3 fatty acid is useful for our healthy. The study aimed to determine the best formulation based on the content of omega-3 in functional beverage of sea slug. The study was conducted in three phases: 1) the preparation of raw materials (Discodoris sp.), 2) the preparation of additional ingredients (ginger and soybean), 3) the stage of formulation of the functional beverage products. There were are three formulation, formulation A1 (Discodoris sp. 20%, ginger 35%, soybean 45%), A2 (Discodoris sp. 25%, ginger 35%, soybean 40%), and A3 (Discodoris sp. 30%, ginger 35%, soybean 35%). The best formulation with highest omega-3 and sensory was achieved in formulation A1. Sea slug functional beverage can be sources of omega-3 fatty acid. Testing the stability of the parameters chemical and microbiological shelf life by showing prediction of critical parameters is TPC, the formula A1 has a shelf life of 64 days at 30 oC, 70 days at 35 oC, and 84 days at 45 oC. The higher storage temperature the shelf life of the product will be longer.
Keyword: 

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
Keyword: