Judul: Studi Pengaruh Lama Penyimpanan, Waktu Pencampuran, dan Penambahan Solvent pada Key Component Terhadap Flavor Release pada Minuman Ringan di PT. Tudung Putra Putri Jaya
Abstrak: Flavor is a sensation that comes and is caused by chemical components of volatile or non-volatile, which originated from natural or synthetic, and occur during eating or drinking. Now, flavor more rapidly adopted by food and beverage industry in Indonesia, especially in beverage productss. The purpose of this study is to understand changes that occur in flavor release in the final product by mixing the flavor concentrat with a solvent that is affected by the concentration of key components, mixing time and length of storage using a flavour 10x more concentrated than the ready to use (RTU) flavor. The Comparison that used between flavor concentrat and solvent are 60:40, 70:30, 80:20, 90:10, and 100:0. Before mixing between flavor concentrat and solvent in some concentration will be conducted preliminary research to find optimum speed mixing using concentrat 10x that diluted until the concentration is equal to the RTU flavors that have been used in products already marketed. Flavor has been mixed to be tested storage for 5 weeks with weekly observation. Observations were using the Different Test with Triangle Test sensory that will prove whether formulations are different or not with the RTU flavor. Further development in industrial scale study will be conducted later.
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Judul: Penentuan faktor faktor yang memepengaruhi umur simpan dan penentuan umur simpan orange emulsion flavor dengan metode ASLT di PT. Firmenich Indonesia
Abstrak: Stability of emulsion product such as emulsion flavor is depend largely on interaction between hydrophilic and hydrophobic part of the product. Flavor compounds are generally soluble in oil (oil soluble), insert of these compounds in an emulsion makes it possible to deliver oil-soluble components into the water based. This research aims to estimate the shelf life of stabilized emulsions flavor using Accelerated Shelf Life Testing (ASLT) method. In this method, the storage condition is out of normal so that the deterioration will be occurred in a shorter time. Storage temperatures that used in this research were 20°C, 25°C,30°C and 35°C. Arrhenius equation used as a model in the estimation of shelf life with acceleration method. Arrhenius equation is an approach that uses the kinetic theory, which generally have reaction order 0 or 1 for food. The parameters that can be quantitatively measured are required to analyze the decline of quality with acceleration method. The parameters that used in this research were size particle, odor, spesific gravity, color and microbial. Based on the analysis of particle size, the shelf life of orange emulsion flavor are 0,266 months at 25 ° C. Based on the analysis of sensory attributes of smell, the shelf life of orange emulsion flavor are 5.38 months at 25 ° C, And based on the analysis of sensory attributes of color , the shelf life of orange emulsion flavor are 2.55 months at 25 °. The factors most influential in determining the shelf life of orange emulsion flavor based on AHP analysis include: homogenization, stabilizer, flavor, emulsifier, and type of packaging. While the final quality of the product parameters orange emulsion flavor are: particle size distribution, microbiology, flavor, pH, specific gravity, refraction index, and color.
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Judul: Closed Knight’s Tour pada Papan Catur Berbentuk Persegi Panjang dengan Ukuran Maksimal 8 × 8
Abstrak: Closed Knight’s Tour merupakan langkah kuda yang mengunjungi setiap kotak pada papan catur tepat satu kali dengan langkah kuda berawal dan berakhir pada kotak yang sama. Graf yang terbentuk dari closed knight’s tour dinotasikan sebagai graf G(m,n), dengan m adalah banyaknya baris dan n adalah banyaknya kolom. Graf tersebut memuat Hamiltonian cycle. Sebuah graf terhubung G adalah graf bipartite jika dan hanya jika graf tersebut tidak memiliki cycle dengan panjang ganjil. Papan catur yang memenuhi syarat cukup untuk memiliki closed knight’s tour adalah papan catur berukuran 5 × 6, 5 × 8, 6 × 6, 6 × 7, 6 × 8, 7 × 8, dan 8 × 8.
Keyword: bipartite, closed knight’s tour, hamiltonian cycle, knight’s tour, teori graf