Judul: Hidrolisis Pati dari Empulur Sagu dan Ampas Sagu untuk Produksi Sirup Glukosa
Abstrak: Sago starch is extracted from the pith of sago trunk, while sago hampas is solid waste generated sago starch processing. Sago hampas still contained some starch which depends on the extraction technique. In glucose syrup production, only starch components are hydrolysis by using acid and enzyme. The objectives of this research are to investigate the direct hydrolysis of sago pith and utilization of sago hampas for glucose syrup production, compared to native sago starch. The results showed the high amount of starch in sago pith (86,0%) and sago hampas (55,3%). Glucose syrup produced from enzymatic hydrolysis has higher dextrose content (DE 71-74) compared to acid hydrolysis (DE 33-42). Glucose syrup produced from sago pith and sago hampas have similar characteristic with glucose syrup produced from native sago starch, but with lower yield.
Keyword: enzymatic hydrolysis, acid hydrolysis, sago starch, sago hampas, sago pith

Judul: Mempelajari pemanfaatan gaplek tidak segar menjadi sirop glukosa
Abstrak: Penelitian ini bertujuan unutk memanfaatkan gaplek tidak segar sebagai bahan baku sirop glukosa. Pemilihan komoditi ini karena gula di Indonesia masih merupakan masalah yang menonjol, namun dilain pihak terdapat gaplek tidak segar yang belum dimanfaatkan dengan optimum. Untuk keperluan tersebut dilakukan berbagai perlakuan jenis gaplek, yaitu gaplek segar dan gaplek tidak segar; cara memperoleh pati, yaitu cara basah dan cara kering; cara hidrolisa, yaitu katalis asam klorida dan katalis enzim -amilase dan glukoamilase. Pengamatan meliputi rendemen sirop glukosa, kadar bahan kering, kadar gula pereduksi, ekuivalen dekstrosa, nilai refraktometer, kadar abu, warna dan kejernihan ser- ta membandingkan rendemen sirop yang diperoleh terhadap gaplek semula. Rancangan yang digunakan dalam penelitian ini adalah rancangan acak lengkap faktorial dengan ulangan dua kali. Hasil penelitian menunjukkan bahwa jenis gaplek hanya berpengaruh terhadap kadar bahan kering. Sedangkan cara memperoleh pati berpengaruh pada semua pengamatan. Perlakuan cara hidrolisa berpengaruh pada rendemen, kadar bahan kering, kadar gula pereduksi, ekuivalen dekstrosa, nilai refraktometer, warna dan kejernihan. Dari hasil penelitian dapat disimpulkan bahwa perlakuan gaplek segar yang patinya diperoleh dengan cara basah dan hidrolisa dengan menggunakan enzim adalah yang terbaik yaitu dengan rendemen 80,195 persen, kadar bahan kering 77,335 persen, kadar gula pereduksi 73,375 persen, ekuivalen dekstrosa 91,010, nilai refraktometer 71,60 Brix, kadar abu 0,450 persen, kejernihan 79,90 persen transmisi, warna 76,10 persen transmisi dan rendemen sirop jika dibandingkan terhadap gaplek semula sebesar 65,35 persen.
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Judul: Perilaku Remaja dalam Mendengarkan Radio Komunitas (Kasus Pendengar BeTe Radio di Kelurahan Tegal Gundil, Kecamatan Bogor Utara, Kota Bogor, Provinsi Jawa Barat)
Abstrak: This research aimed to analyze the relation between teenager behaviors on community radio listening activity. This research goals are (1) to identify the pattern of listening activity on community radio among teenager (2) to analyze the relation between listeners characteristics and broadcast format assessment by listening community radio (3) to analyze the relation between community radio listeners pattern with the teenager behaviors, and (4) to identify the listeners expectations towards community radio. The main method of this research is quantitative approach, and qualitative approach as supporting. Research and observationshow that the teenagers who are listening to the BeTe community radio have low level of listening activity pattern. Affective level and social network were also relatively low. Related to the listeners characteristics, the research result showed that gender does not have any relation with the pattern of radio listening activity. Beside that, age, media ownership, and main activities have significant relation towards pattern of radio listening activity. To assess broadcast format variable, pshycological proximity does not have any relation significantly with the pattern of radio listening activity. In the pattern of radio listening activity variable which is consist of listening frequency, listening duration, program choices, participation on the program have significant relation with to point of view, affective, and social network of BeTe Radio listeners.
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