Judul: Stabilitas Es Krim yang Diberi Khitosan sebagai Bahan Penstabil pada Konsentrasi yang Berbeda
Abstrak: Ice cream is a fat emultion in water. Chitosan as used stabilizer, it was hoped can be added the right thickness to limit cristalization. Therefore it can form ice cream with smoother tecstur and increase the strength and effect the melting ability of ice cream. Chitosan able to give added value to ice cream for it was advantaged which were reduced the cholesterol level of blood, coagulant against in blood, food fiber, bacteria against and clotes leukimia cells so that suitable as substances against tumor. The aim of this research is to find chitosan with the best concentration that used as stabilizer in ice cream and to studies impact of added chitosan fisically, organoleptic quality and chemistry. Method of ice cream was dough preparated, mixed, pasteurized, homogenized, ripened, freezed, foamed, packaged and hardened. This experiment was conducted using randomized completed design with five levels (0; 0,05; 0,1; 0,15 and 0,2%) and the data were analized using ANOVA and the significant differences occurred then continued with Duncan Multiple Range Test. The results showed that ice cream with chitosan as stabilizer significantly (P<0,01) affect the overrun, melting ability and pH value than significantly (P<0,01) affect the colour, taste, texstur and melting ability in mouth, but not significantly affect the smell. Protein value suitable with standarization was 2,7 (%bb), fat value 4,54 (%bb), solid totality 3,83 (%bb) and ash value was 0,77 (%bb). The addition of chitosan as stabilizer to 0,05% produced the most palatable product.
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Judul: Karakteristik Fisik dan Organoleptik Es Krim dengan Penambahan
Tepung Kentang (Solanum tuberosum L) sebagai Penstabil
Abstrak: Penstabil dalam pembuatan es krim dapat memengaruhi karakteristik dari es krim yang dihasilkan. Penelitian ini bertujuan mengkaji pengaruh penambahan penstabil tepung kentang terhadap karakteristik fisik dan organoleptik es krim yang dihasilkan. Penelitian ini dilakukan dengan menggunakan Rancangan Acak Kelompok (RAK). Karakteristik fisik yang diamati terdiri atas overrun, daya leleh, pH, dan Uji Mikroskop serta diuji menggunakan pengujian One-Way ANOVA. Karakteristik organoleptik yang diamati terdiri atas warna, rasa manis, tekstur, mouthfeel dan aroma susu dari es krim yang dihasilkan, serta dianalisis dengan uji Kruskal-Wallis. Perlakuan dalam penelitian ini adalah kadar penggunaan penstabil tepung kentang 0% (P1), 1,2% (P2), 1,6% (P3), dan 2% (P4). Hasil penelitian menunjukkan bahwa nilai overrun formulasi P2, P3, dan P4 berbeda nyata (p<0,05) lebih tinggi dibandingkan formulasi P1. Daya leleh formulasi P2, P3, dan P4 lebih lama secara signifikan (p<0,05) dibandingkan formulasi P1. Karakteristik organoleptik es krim yang dihasilkan tidak menunjukkan perbedaan nyata terhadap warna, rasa, dan aroma namun, terdapat perbedaan nyata (p<0,05) terhadap tekstur dan mouthfeel. Penambahan tepung kentang es krim mampu memberikan hasil yang optimal sebagai penstabil., Stabilizer in ice cream mixture can affect ice cream characteristics. The objective of this research was to examine the effect of potato flour addition as stabilizer to physical and organoleptical characteristics of ice cream. This research was conducted by Block Randomized Design. Physical characteristics obeserved were overrun, melting point, pH, microscope test of ice cream and One-Way ANOVA method was used for statistical test. Organoleptical characteristics observed were color, taste, texture, flavor and mouthfeel of ice cream and Kruskal- Walis method was used for statistical testing. The treatments given in this study were potato flour level of using 0% (P1), 1,2% (P2), 1,6% (P3), and 2% (P4). the result showed overrun from P2, P3, and P4 formulation was highly significant different than P1 (p<0,05). Melting point results showed significantly different (p<0,05) in each formulation. P2, P3, and P4 formulation had significant longer time to melt than P1. The organoleptical characteristic results showed no significant difference in color, taste, flavor, but significantly different (p<0,05) in texture and mouthfeel. The addition of potato starch to ice cream can provide optimal results as a stabilizer.
Keyword: ice cream, physical charteristic, organoleptical, potato flour

Judul: Ornithonyssus Bursa (Berlese, 1888) Famili Macronyssidae yang Menyerang Unggas Dan Penaggulangannnya
Abstrak: Ornithonyssus bursa adalah tungau penghisap darah pada unggas di daerah tropis dan subtropis. Tungau ini relatif kecil, dengan panjang tubuh antara 700-1000 mikron dan lebarnya 250-490 mikron. Tubuhnya bulat berwarna coklat kekuningan sebelum menghisap darh dan berwarna merah setelah menghisap darah dari induk semangnya.
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