Judul: Minuman nutrisi olahraga berbasis hidrolisat protein gurita
Abstrak: Minuman nutrisi olahraga diketahui dapat meningkatkan performa dan stamina atlet. Minuman nutrisi olahraga berbasis hidrolisat protein whey dan kedelai telah banyak dikembangkan, namun dari hasil laut masih sangat jarang. Gurita (Octopus cyanea) yang secara luas diketahui mengandung taurin dan asam amino berpotensi dikembangkan sebagai minuman nutrisi olahraga. Penelitian ini bertujuan untuk menghasilkan hidrolisat protein gurita serta memformulasikan dan menentukan profil minuman nutrisi olahraga berbasis hidrolisat protein gurita. Hidrolisat protein gurita dengan pemberian ekstrak kasar enzim bromelin 30% dan aktivitas spesifikasi 1,98 ± 0,12 U/mg.menit menghasilkan derajat hidrolisis 77,78 ± 2,69% dan taurin 751,02 ± 10,63 mg/100g. Minuman nutrisi olahraga dengan penambahan 4% (w/w) hidrolisat protein gurita secara sensori dapat diterima panelis, dan pada takaran saji 600 mL mengandung taurin 726,06 ± 0,82 mg serta terdeteksi 17 jenis asam amino.
Keyword: hydrolysis, octopus

Judul: Chocolate Smoothies Formulation with Pasteurized Egg White Addition as High Protein Drink for Athlete
Abstrak: Minuman olahraga menyediakan protein yang dibutukan untuk membantu menjaga massa otot serta performa olahraga. Tujuan penelitian ini adalah mengembangkan formula smoothies dengan perlakuan penambahan putih telur pasteurisasi (F1, F2, dan F3). Formula yang terpilih memiliki 5 atribut sensori yang teridentifikasi melalui uji organoleptik. Daya terima formula terpilih teridentifikasi melalui uji hedonik. Formula terpilih berdasarkan uji hedonik dan kandungan gizi terbaik adalah F1 dengan kadar air, protein, lemak, abu, serat kasar, dan karbohidrat berturut-turut sebesar 81,52%b/b, 10,91%b/b, 1,37%b/b, 0,94%b/b, 1,56%b/b, 5,26%b/b. Formula berkontribusi sebesar 8,2% energi dan 29,6% protein per takaran saji (250 gr) terhadap angka kecukupan gizi atlet pria. Formula berkontribusi sebesar 9,8% energi dan 32,9% protein per takaran saji (250 gr) terhadap angka kecukupan gizi atlet wanita. Formula berkontribusi sebesar 9,8% energi dan 32,9% protein per takaran saji (250 gr) terhadap acuan label gizi (ALG) umum Indonesia., Sports drink provides proteins that is required to maintain muscle mass and sports performance. This research is conducted to develop formulation of chocolate smoothies with addition of pasteurized egg white (F1, F2, and F3). Chosen formulation have five sensory attribute that is identified through organoleptic test. Acceptability of product is determined through hedonic test. The best chosen formula determined through best hedonic test and nutritional content is F1 with a water content of 81.52%w/w, protein content 10.91%w/w, fat content 1.37%w/w, ash content 0.94%w/w, crude fiber content 1.56%w/w, and carbohydrate content 5.26%w/w. Chosen formula contributes to 8.2% energy and 29.6% protein intake per serving size (250 ml) for male athlete nutritional needs. Chosen formula contributes to 9.8% energy and 32.9% protein intake per serving size (250 ml) for female athlete nutritional needs. Chosen formula contributes to 9.8% energy and 32.9% protein intake per serving size (250 ml) for ALG in Indonesia.
Keyword: athlete, egg white, pasteurized, protein, sports drink

Judul: Tinjauan Matematis pada Model Makroskopik dan Mikroskopik Arus Lalu-lintas
Abstrak: Traffic flow phenomenon can be described through mathematical model such as continuous dynamic model with an ordinary differential equation so that it can be solved with integral factors. In this paper three simple models of traffic flow are discussed, i.e, two macroscopic and one microscopic models. Macroscopic model formulates dynamics of the traffic flow that occurs on a large number of vehicles on a road. While the microscopic model explains drivers’ behavior in their interaction with other vehicles ahead, i.e, car-following model. This paper shows the existence of ordinary differential equation found in the traffic flow model and indicates some different representations in the context of the same model. It also reviews a simple model of traffic flow along a single link, which leads to some unexpected results, i.e, it can express the solution model in term of link outflows as well as trip time. In the microscopic model, simulation is done to illustrate the behavior of the drivers with a sensitivity coefficient as a benchmark parameter.
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