Judul: Penambahan Bakteri Selulolitik Streptomyces untuk Perbaikan Proses Tepung Kasava Terfermentasi
Abstrak: Cassava is an important agricultural commodity in Indonesia. Cassava has a high-carbohydrate contained, so it is often used as food. But have limitations in the utilization due to the presence of acid cyanide (HCN) contained. Fermentation of cassava flouring submerged culture method involving cellulolytic bacteria, lactic acid bacteria (LAB) and yeast is one effort to overcome these problems. This study used a starter microorganisms from cellulolytic bacteria of the genus Streptomyces (KBM 2, KBM 6, KBM 7 and KBM 10), LAB from pickle mustard, and commercial bakery yeast. The result of the conducted selection process, indicated that the KBM 10 had the highest activity on cassava substrat 0,489 nkat/ ml on the second day of incubation. Out of all the fermentation process which is done by some combination of starter, flour quality analysis showed that SBK 3-1 treatment with the addition of 50 ml cellulolytic bacteria in one day fermentation period gives the highest value in whiteness of 88% and a decreasing 99%.
Keyword: 

Judul: Pembuatan Tapioka Asam dengan Penambahan Starter Cair Bakteri Asam Laktat Indigenous
Abstrak: Sour cassava starch is a modified cassava starch produced through submerged fermentation for several weeks followed by sun drying. Lactic acid bacteria is the dominant microorganism and has important role in the fermentation process. The use of indigenous LAB isolate as starter is expected to shorten the fermentation time and maintain its quality. The purposes of this research were to prepare a liquid starter of lactic acid bacteria for the fermentation process, investigate the effect of liquid starter in accelerating the fermentation process and investigate the effect of fermentation time (0, 5, 10, 15, 20 and 25 days) to quality and functional properties of sour cassava starch. A randomized block design was used with fermentation time factor. The addition of liquid starter could accelerate the fermentation process to only 15 days, with the highest expanding capability. Acidifying of cassava starch led to an increase in peak viscosity, but decrease final viscosity of the paste. Acid accumulation could suppress undesirable microorganisms growth, so that it can extend the shelf life of the products.
Keyword: 

Judul: Pengukuran Engagement pada Permainan Orbital-X, Permainan Pertahanan Menara Sirkular
Abstrak: Jenis permainan pertahanan menara (tower defense) adalah sebuah gaya permainan yang memiliki tantangan tersendiri untuk menyusun sebuah strategi melawan musuh dengan menempatkan menara pertahanan yang tepat. Permainan dalam tugas akhir ini adalah permainan pertahanan menara yang memiliki konsep berbeda, yaitu dengan menaruh menara pertahanan di posisi tengah dan menara lainnya berputar sirkula. Sebelum permainan disebarkan, dibuat 2 buah kuesioner, yaitu kuesioner pra-permainan dan pasca permainan untuk mengukur engagement pemain. Kuesioner pra-permainan diberikan kepada 5 orang. Kemudian, mereka diberi waktu untuk memainkan Orbital-X selama satu minggu. Setelah itu, kelima responden diberikan kuesioner pasca permainan untuk mengukur engagement ketika bermain. Hasil pengukuran engagement pada aspek immersion, pemain sangat setuju dengan pertanyaan “Saya dapat dengan mudah menggunakan kontrol Orbital-X dan saya dapat menguasainya dengan cepat” dan pemain sangat tidak setuju dengan pertanyaan “Interaksi yang terjadi dalam dunia game yang saya mainkan sama halnya seperti saya berinteraksi di dunia nyata”.
Keyword: Engagement, Gameplay, Immersion, Permainan, Pertahanan Menara