Judul: Sintesis Hidrogel Antibakteri Berbasis Karboksimetil Selulosa- TiO2
Abstrak: Carboxymethyl cellulose (CMC) hydrogels can be synthesized from bacterial cellulose. The reaction of CMC and succinic acid can be used as an antibacterial with the addition of TiO2 (Rutile). This study was to synthesize hydrogel-based antibacterial CMC-TiO2. The addition of succinic acid against CMC will form a crosslinking by the esterification reaction between the -OH group of succinic acid with polycarboxylic acid of CMC. The product was evaluated by the degree of substitution (DS), swelling ratio, water content, pH, the infrared spectrum, microphotographs, antibacterial test, and difractogram.The resulted DS was approximately 0.2368. The swelling ratio was affected by the TiO2 concentration. The higher the TiO2 concentration the higher the swelling ratio. CMC-succinic-TiO2 was able to inhibit Staphylococcus aureus and Escherichia coli in each TiO2 concentration. The increasing TiO2 concentration was followed by the higher capability of bacteria inhibition. Therefore, CMCsuccinic- TiO2 is potential as a material for antibacterial
Keyword: Bogor Agricultural University (IPB), TiO2, succinic acid, hydrogels, Carboxymethyl cellulose

Judul: Sintesis Hidrogel Antibakteri Berbasis Karboksimetil Selulosa- ZnSO4
Abstrak: Coconut water could be made into nata de coco that contain cellulose. The cellulose can be further chemically modified into cellulose derivates such as carboxymethyl cellulose (CMC). Then CMC was used as an antibacterial hydrogel materials using crosslinking agents such as succinic acid, and ZnSO4 as an antibacterial agent. The synthesized CMC was characterized for the degree of substitution, the pH of a CMC solution of 1%, and moisture content. The CMCsuccinic acid was characterized based on infrared spectra. The difractogram and microphotograph showed that ZnSO4 was not converted into ZnO. The surface analysis of the highest swelling of CMC-succinic acid-ZnSO4 hydrogel using scanning electron microscopy. The swelling ability of the hydrogel increase with the increasing ZnSO4 concentration. The antibacterial test showed that the synthesized hydrogel inhibited Staphylococcus aureus and Escherichia coli growth and potentialy used as an antibacterial hydrogel.
Keyword: Bogor Agricultural University (IPB), hydrogels, crosslinked CMC, cellulose modification, antibacterial activity

Judul: Analisa Prestasi Kuda Pacu Pada Kejuaraan Nasional Pacuan Derby Indonesia Tahun 1974-2015
Abstrak: Olahraga berkuda memerlukan ternak kuda yang bermutu tinggi dan terlatih dengan baik. Oleh karena itu, organisasi nasional bernama PORDASI (Persatuan Olah Raga Berkuda Indonesia) melakukan program grading up kudakuda lokal Indonesia. Program grading up telah dilakukan selama 41 tahun yang lalu sampai sekarang dan perlu dilakukan ulasan atas program tersebut. Tujuan dari penelitian ini adalah untuk menganalisis prestasi kuda pacu Indonesia pada kejuaraan nasional derby Indonesia tahun 1974-2015. Data yang digunakan merupakan data sekunder dari 111 ekor kuda yang menempati posisi 1, 2, dan 3. Penelitian ini menggunakan metode deskriptif. Kuda Generasi ke-4 (G4) memiliki prestasi paling banyak dibanding kuda peranakan Thoroughbred lainnya. Kuda ini mendominasi pacuan pada jarak 2 000 meter. Asal tetua pejantan dari Thoroughbred Australia dan betina lokal priangan paling banyak menghasilkan kuda juara pacuan Derby Indonesia. Persentase jenis kelamin jantan dan betina untuk posisi finish ke 1,2, dan 3 tidak terlalu berpengaruh pada prestasi kuda. Kuda dengan persentase darah Thoroughbred lebih tinggi berpeluang untuk berprestasi pada jarak pacu yang lebih jauh.
Keyword: grading up, jarak pacu, jenis kelamin, prestasi, Thoroughbred