Judul: Pengaruh Konsentrasi Starter dan Penambahan Inulin dalam Pembuatan Yogurt Susu Kambing
Abstrak: The aim of this research was to figure out influence of concentration of starter and inulin on time of producing, texture, and aroma of yoghurt made of goat’s milk. This study was conducted from April until December 2010 at the Laboratory of Veterinary Public Health, Faculty of Veterinary Medicine, Bogor Agricultural University. This research was designed by factorial complete random design with two treatments, i.e., addition of starter and inulin. Treatments of starter and inulin in series consisted of 3 levels (2 %, 3 %, and 4 %) and 6 levels (0, 0.5, 1, 1.5, 2, and 2.5 mg/l) respectively. The results showed that different concentration of starter influenced time of producing goat’s milk yoghurt (p<0.05), meanwhile different addition of inulin did not influence the time of producing yoghurt (p>0.05). Yoghurt starter with 3% and 4% concentration require faster time in producing yoghurt. Texture and aroma of goat’s milk yoghurt were influenced by time of producing and both treatments (p<0.05). Combination of starter and inulin had given best organoleptic result in treatment of 3% of starter and 0,5 mg/l of inulin on the 4th hour (LP8) and in treatment of 3% of starter and 1 mg/l of inulin on the 5th hour (LP9).
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Judul: Study the manufacturing goat milk yoghurt and diversification taste with spices syrup
Abstrak: The research aims to make a set of goat milk yogurt and diversification taste of the best formula with syrup made from spices through the test characteristics of sensory, physical, chemical, and microbiological. Formulation of goat milk yogurt is Esa15 (ratio of Etawah goat’s milk and Saanen goat’s milk 1:5, starter culture ratio of 1:1), K11 (goat's milk without the addition of skim milk, starter culture ratio of 1:1), K23 (goat's milk without the addition of skim milk, starter culture ratio of 2:3), K32 (goat's milk without the addition of skim milk, a comparison of culture starter 3:2), KS11 (goat's milk with the addition of skim milk, starter culture ratio of 1:1), KS23 (goat's milk with the addition of skim milk, starter culture ratio of 2:3), and KS32 (goat milk with the addition of skim milk, comparison of starter cultures 3:2). The results of the hedonic test showed that selected one formula goat milk yogurt that is most preferred by panelists is KS32. KS32 formula of goat milk yogurt used for diversification taste with the addition of spices syrup. Spice syrup formula consists of ginger syrup, CKA syrup (cloves, cardamom, anise), and CKK syrup (cloves, cardamom, cinnamon). Furthermore the stability for yogurt made goat's milk without the addition of syrup (plain) and goat's milk yogurt with the addition of syrup is determined. Based on observations, the selected formula indicating a decrease of pH, increased total solid soluble, and a decrease of total lactic acid bacteria in yogurt during storage in 10oC and safe for consumption for 15 days. The yogurt contains moisture content ranged from 81.58 to 83.19% (wet basis), carbohydrate content ranged from 8.99 to 10.91% (wet basis), protein content ranged from 4.05 to 4,63% (wet basis), fat content ranged from 2.60 to 2.65% (wet basis), and ash content ranged from 0.78 to 0.82% (wet basis).
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Judul: : Persamaan Tunggal sebagai Representasi Kurva Komposit
Abstrak: A mathematical method is introduced to represent a composite curve based on an extension of analytic geometry. The representation is given either with a single equation or with two equations, in the case of parametric representation. This method permits the representation of composite curves in similar manner to the conventional representation of non-composite curves. Some mathematical tools, including Heaviside unit step function and periodizer function, are used in the establishment of a single equation. In this paper, regular equations of regular and irregular polygon, as well as composite curves of two dimensions, are implemented using a computer algebraic system, Mathematica.
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