Judul: Potensi Nanopropolis Trigona spp Asal Bukittinggi sebagai Pemacu Pertumbuhan pada Tikus Putih (Sprague-Dawley)
Abstrak: Some materials which can be used as Growth Promoter in cattle include antibiotic, hormone, probiotic, prebiotic, and imunomodulator. The use of antibiotics as growth promoter in cattle causes some problems related to microbial resistance and antibiotic residue. The alternative solution is the use of natural antibacteria such as propolis. The aim of this study is to determine potency of nanopropolis of Trigona spp from Bukittinggi as growth promoter using in vivo assays on male rats Sprague-Dawley. Encapsulated propolis nanoparticle was prepared by high speed homogenization technique followed by encapsulation using maltodekstrin with solvent evaporation technique. The size of nanopropolis was measured with SEM. Observation propolis effects in vivo was carried out by measuring body weight of rat and the propolis antibacterial activity in feces and intestine was determinated by plate count method. The results of SEM show that size of nanopropolis is 100 nm. The growth promoter potency was determined by measuring the percentage of body weight gain of the rats. The highest percentage reached by nanopropolis 2%, with effectivity of 109% againts compared to positive control. Percentage of growth nanopropolis 2% 100 mg/KgBB, positive control (ampisilin 250 mg/KgBB), nanopropolis 1% 100 mg/KgBB, raw propolis 100 mg/KgBB, dan standard is 34,62%, 23,39%, 12,5%, 10,92%, dan 2,24%. The most stable count of E.coli on fecal is in nanopropolis 2%.
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Judul: Potensi nanopropolis lebah madu trigona spp asal pandeglang sebagai antibakteri
Abstrak: Propolis is one of the natural produced by honey bee which have many benefits, due to its properties as antibacterial, antivirus, and anticancer. Use the form nanopropolis expected to provide a better antibacterial activity compared to the usual form of propolis. The aim of this study is to determine potency of nanopropolis honey bee from Pandeglang as antibacterial agent. Encapsulated nanopropolis was prepared by high speed homogenization technique and solvent evaporation. The size of nanopropolis was measured with SEM. The antibacterial activity test was performed by agar well diffusion. The result of SEM show that size of nanopropolis is 175-873 nm. Nanopropolis have activity as antibacterial agent for Gram positive dan Gram negative bacteria. The nanopropolis showed higher bacterial activity than extract propolis were 208.86% for B. subtilis, 211.83% for S. aureus, 227.01% for E. coli, and 230.29% for Salmonella sp. While compared to amphicillin 10 mg/ml equel to 43.87%, 49.12%, 42.35%, and 37.58%. Minimum Inhibitory Concentrartion (MIC) of nanopropolis were 0.15%, 0.075%, 0.15%, and 0.313% for B. subtilis, S. aureus, E. coli, and Salmonella sp.
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Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh.
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. ,,,
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular.