Judul: Minimalisasi Proses Pengolahan Jus Buah
Abstrak: Minimally process on fruits juice was a processing applied on food to remove inedible part and reduce the size of fruits. Minimally process was done through processing fruits juice and frozen-stored juice concentrate. The fruits that were used as raw materials were tropical fruits, such as guava, mango, and soursop. The methods of research were raw materials preparation, product formulation, processing, organoleptic test, and product characterization. Compositions of product were fruits, sugar liquid, citric acid, and water. The processing steps involved pasteurization, packaging process, and frozen storage. Analysis of chemical composition changes were done during processing such as fresh fruits, prior to pasteurization, post pasteurization, post frozen storage for four days and its serving, also post frozen storage for one month and its serving. Analysis were total titratable acidity test, vitamin C content, and total soluble solid test. The results revealed that chemical changes during storage were relatively low, thus, product could be stored for one month.
Keyword: Bogor Agricultural University (IPB), minimally process, fruits juice, fruits

Judul: Pengkajian karakteristik penyimpanan produk "Minimally processed" buah nangka (Artocarpus heterophyllus lamk.)
Abstrak: Semakin disadarinya arti sehat dalam kehidupan, membawa dampak makin meningkatnya permintaan akan produk pangan yang sedikit mengalami pengolahan Di samping itu, kesibukan kerja yang makin meningkat menyebabkan waktu yang tersisa di luar waktu kerja semakin sempit, sehingga permintaan masyarakat terhadap buah dan sayuran segar yang praktis dan siap dikonsumsi juga semakin meningkat Buah nangka yang matang sangat digemari, tetapi memerlukan waktu yang lama untuk dihidangkan dan mengandung getah yang rekat, sehingga perlu dilakukan pengolahan minimal untuk kepraktisan bagi konsumen. Pengolahan minimal merupakan serangkaian perlakuan yang pada dasarnya dimaksudkan untuk menghilangkan bagian-bagian yang tidak dikonsumsi serta memperkecil ukuran untuk mempercepat penyajian, meliputi pencucian, sortasi, pemotongan, pengupasan, pengirisan, pengeluaran biji dan sebagainya yang cenderung tidak mempengaruhi kesegaran komoditi Untuk menjaga keseimbangan pasokan dan stabilitas harga diperlukan penyimpanan pada suhu rendah dikombinasikan dengan Modified Aatmosphere, yang sudah dapat diciptakan dengan penggunaan film plastik yang tepat Dipihak lain pengolahan minimal (minimally processing) pada buah akan mempercepat produksi etilen, menyebabkan degradasi membran lemak, meningkatkan respirasi, oksidasi pencoklatan dan kehilangan air, sehingga akan memperpendek umur simpan produk yang bersangkutan...
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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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