Judul: Identifikasi pemalsuan susu kambing melalui uji sifat listrik
Abstrak: Susu kambing merupakan salah satu bahan pangan yang memiliki nutrisi tinggi. Dalam beberapa periode ini banyak kasus pencampuran bahan makanan dengan bahan lain. Susu termasuk dalam kategori yang rentan untuk dipalsukan. Pemalsuan susu yang sering dengan penambahan air, air cucian beras, air tajin, dan santan. Salah satu upaya untuk mengidentifikasi pemalsuan ini dengan menguji sifat listrik dari susu murni dan susu yang telah dipalsukan. Dari penelitian yang dilakukan, susu yang dicampurkan dengan air, air beras, air tajin, dan santan memiliki korelasi antara konsentrasi bahan tambahan dengan impedansi, resistansi, dan konduktansi yang dimiliki sampel. Semakin besar konsentrasi bahan penambah maka nilai dari impedansi dan resistansinya akan meningkat, namun nilai konduktansinya semakin menurun. Untuk kapasitansi yang diukur tidak memiliki korelasi dengan penambahan konsentrasi bahan penambah. Dengan demikian pemalsuan susu yang ditambah air, air cucian beras, air tajin, dan santan dapat identifikasi dengan mengukur impedansi, resistansi, dan konduktansinya.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Goat milk, Impedance, Capacitance, Resistance, Conductance

Judul: Identifikasi Pemalsuan Susu Kambing melalui Uji Sifat Listrik
Abstrak: Goat's milk is one of the foods that have high nutritional. In this period there are some cases of foodstuffs by mixing with other materials. Milk is included in the vulnerable category to forge. Adulteration of milk that often with the addition of water, rice water, starch water, and coconut milk. One of the efforts to identify these case by examining the electrical properties of pure milk and milk that had been forged. From the research, milk that has been mixed with water, rice water, starch water, and coconut milk have correlation between concentration of additive with impedance, resistance, and conductance of the sample. The greater the concentration of the additive, impedance and resistance will increase, but the conductance decreases. The measured capacitance has no correlation with the concentration of additive. Thus adulteration of milk with addition of water, rice water, starch water, and coconut milk can be identified by measuring the impedance, resistance, and conductance
Keyword: goat’s milk, impedance, capacitance, resistance, conductance

Judul: Lejeuneaceae Subfamily Ptychanthoideae (Hepaticae) in  West Java
Abstrak: Subfamily Ptychanthoideae of the family Lejeuneaceae (Hepaticae) in West Java is still poorly known. Publications on this subfamily are out of dated and written in the 19th or early of 20th century. The last taxonomic treatment of Ptychanthoideae of West Java was in 1933, many species names have changed since then. Studies on Ptychanthoideae of West Java are urgently needed. Studies on the Ptychanthoideae were based on the specimens collected from West Java. A total number of 361 of specimens deposited in the Herbarium Bogoriense (BO), Herbarium Biotrop (BIOT), Gottingen Herbarium (GOET) and Bangi Herbarium (UKMB) were examined, those are old and several recent specimens collected in West Java. Recent collections were made from Telaga Warna, Ciater, Gunung Halimun Salak National Park, Cibodas Botanical Garden, Bodogol Education Center and Conservation (Gunung Gede Pangrango National Park), University of Indonesia Campus Depok, including several collections from Banten Province. Twenty four species of Lejeuneaceae subfamily Ptychanthoideae are known from West Java, belonging to 8 genera namely Acrolejeunea (Spruce) Schiffn. (2 species), Archilejeunea (Spruce) Schiffn. (1 species), Lopholejeunea (Spruce) Schiffn. (10 species), Mastigolejeunea (Spruce) Schiffn. (3 species), Ptychanthus Nees (1 species), Schiffneriolejeunea Verd. (1 species), Spruceanthus Verd. (2 species) and Thysananthus Lindenb. (4 species). Two new records of Ptychanthoideae: Mastigolejeunea indica Steph. and Thysananthus minor Verdoorn are reported for Java. A determination key to the species is presented including their descriptions and illustrations.
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