Judul: Hubungan Pola Konsumsi Pangan Sumber Protein serta Aktivitas Fisik dengan Massa Otot pada Remaja di Perdesaan dan Perkotaan.
Abstrak: Penelitian ini bertujuan menganalisis hubungan pola konsumsi pangan sumber protein, aktivitas fisik dan massa otot pada remaja di perdesaan dan perkotaan. Desain yang digunakan adalah cross sectional study. Subjek dalam penelitian ini berjumlah 152 remaja usia 12-15 tahun. Penelitian menggunakan data sekunder yaitu sebagian data penelitian “Gaya Hidup dan Aspek Gizi pada Remaja di Perdesaan dan Perkotaan” (Dwiriani et al. 2013). Usia contoh di perdesaan lebih tua, sementara uang saku dan pendidikan orang tua contoh lebih tinggi di perkotaan dibandingkan perdesaan. Frekuensi konsumsi daging sapi, ikan pindang, dan susu lebih tinggi di perkotaan, tetapi contoh di perdesaan mempunyai tingkat aktivitas fisik dan massa otot lebih tinggi dibandingkan perkotaan. Contoh yang mempunyai status gizi gemuk dan obesitas lebih banyak di perkotaan dibandingkan perdesaan. Tidak terdapat hubungan antara pola konsumsi pangan sumber protein, aktivitas fisik dan massa otot, tetapi hanya status gizi yang mempunyai hubungan signifikan dengan massa otot.
Keyword: massa otot, status gizi, tingkat kecukupan energi

Judul: Hubungan antara Kebiasaan Makan dengan Status Gizi pada Remaja di Perkotaan dan Perdesaan
Abstrak: Double burden of nutritional problems are not only faced by urban societies but also rural societies. This study aimed to analyze association of eating habits, physical activities and nutritional status of adolescence in urban and rural areas. The study used cross sectional design involved 102 adolescences. There were significant differences (p<0.05) between subject in urban and rural in term of age, daily pocket money, parents’ educational background, family income, family size, frequency consumption of noodles, chicken, tofu, soybean, carrot, banana, orange, physical activity of school day. There was no significant difference in frequency of a having meal and habit on buying snacks. There was significant correlation between ages, genders, parents’ educational level, family size, family income and nutritional status (TB/U), as well as gender and nutritional status (IMT/U). However, there was no significant correlation between eating habits, physical activities, energy and nutrients adequacy levels and nutritional status (p>0.05).
Keyword: nutritional status, adolescence, food consumption, eating habits, physical activities

Judul: Isolasi dan purifikasi inhibitor RNA helikase virus hepatitis C dari bakteriosin bakteri asam laktat S34
Abstrak: Target molecular therapy is one of method to prevent hepatitis C virus which was developed recently. NS3 Helicase/RNA helicase hepatitis C virus inhibition using inhibitory peptide are target in molecular therapy. Bacteriocin are inhibitory peptides which can inhibit hepatitis C virus through inhibition of NS3 helicase. Bacteriocin is a peptide which is produced by lactic acid bacteria. The aim of this research were to isolate and to purify bacteriocin from S34 lactic acid bacteria which has high activity to inhibit RNA helicase of hepatitis C virus. S34 lactic acid bacteria were identified using 16S RNA amplification and DNA sequencing identification of S34 lactic acid bacteria was Lactobacillus plantarum WCFS1. The bacterial growth reached logaritmic phase at 7 hours and stationary phase at 10 hours. Bacteriocin were isolated and purified by ammonium sulphate precipitation with 80% saturation, gel filtration chromatography, and characterization of bacteriocin through molecular weight analysis and measured protein concentration. Bacteriocin from S34 lactic acid bacteria were included in 2nd class bacteriocin, had 64.20 % of inhibition against RNA helicase hepatitis C virus, had molecular weight about 1.7-4.2 kDa, and specific activity in the amount of 2.84 x 106 U/mg.
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