Judul: Analisis Residu Antibiotik pada Daging dan Hati Itik di Kabupaten Bogor
Abstrak: Itik merupakan salah satu sumber protein hewani yang banyak dikonsumsi di Indonesia. Kualitas dan keamanan daging itik yang dikonsumsi perlu diperhatikan dari bahaya adanya residu antibiotik yang terkandung di dalam daging. Penelitian ini bertujuan untuk mendeteksi residu antibiotik yang terkandung pada daging dan hati itik. Sebanyak 52 sampel daging dada, daging paha dan hati itik yang diperoleh dari 7 kelompok ternak itik di 5 kecamatan di wilayah Kabupaten Bogor yaitu Kecamatan Ciomas, Gunung Sindur, Klapanunggal, Jasinga dan Jonggol. Sampel yang diambil dari setiap kecamatan berdasarkan proporsi jumlah kelompok ternak itik di setiap kecamatan di Kabupaten Bogor. Hasil pengujian residu antibiotik dengan metode bioassay pada masing-masing sampel daging dan hati itik yang diambil dari peternakan itik di Kabupa-ten Bogor menunjukkan adanya residu antibiotik pada daging dada (7.69%), daging paha (9.61%) dan hati (32.69%). Residu antibiotik golongan makrolida dideteksi pada sampel daging dada, paha, dan hati. Pada sampel daging dada dideteksi residu antibiotik golongan tetrasiklin, sedangkan golongan aminoglikosida dideteksi pada sampel hati. Sampel yang menunjukkan hasil positif pada metode bioassay dikonfirmasi dengan metode high performance liquid chromatography (HPLC). Pada sampel daging dada dan paha yang positif antibiotika dideteksi adanya residu antibiotik jenis tilosin dari golongan makrolida dengan kadar 0.07–0.360 mg/kg. Antibiotika jenis tetrasiklin dari golongan tetrasiklin dideteksi pada sampel daging paha dengan kadar 0.201–0.321 mg/kg.
Keyword: antibiotic residue, bioassay, duck liver, duck meat, HPLC.

Judul: Deteksi Residu Antibiotik pada Hati Itik Berasal dari Peternakan di Kabupaten Bogor
Abstrak: The research was aimed to detect the existence of antibiotic residue in ducks liver at poultry in Bogor District. There were 53 samples which were taken from 5 Sub-districts in Bogor District. The research was done by bioassay method. The result showed that antibiotic residue in ducks liver was detected positive (32.1%) from aminoglicoside and macrolide group. Antibiotic residue came from poultry in Ciomas Sub-district (29.4%), Gunung Sindur (11.8%), Jasinga (35.3%), and Jonggol (23.5%). Based on aminoglicoside group, it was 3.77% came from Jonggol Sub-district (12.5%), while tetrasiclin and penicilin was not found. In Klapanunggal Sub-district was detected negative antibiotic residue in the result of testing. Therefore, it is needed to control toward the excistence of antibiotics residue in order to guarantee the consumens health
Keyword: duck., bioassay method, antibiotic residue

Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell