Judul: Sifat-Sifat Fisiko - Kimia Ekstrak Protein Ikan Tongkol (Euthynnus affinis) dalam Pembentukan Emulsi
Abstrak: Tu juan Penelitian ini adalah untuk mempela j a r i pengaruh konsentrasi salt-soluble protein, pH fase terlarut , dan rasio wolume fase minyak teremulsi terhadap kapasitas penurunan tegangan permukaan udara-air, kapasitas penurunan tegangan inter fasial winyak-air, daya emulsi, stabilitas emulsi, dan daya busa.
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Judul: Sifat-Sifat Fisika-Kimia Ekstrak Protein Ikan Tongkol (Euthynnus affinis) Dalam Pembentukan Emulsi
Abstrak: Tujuan Penelitian ini adalah untuk mempelajari pengaruh konsentrasi salt-soluble protein, pH fase terlarut, dan rasio volume fase minyak teremulsi terhadap kapasitas penurunan te- gangan permukaan udara-air, kapasitas penurunan tegangan in- terfasial minyak-air, daya emulsi, stabilitas emulsi, dan da- ya busa. Ekstraksi protein dilakukan dengan larutan NaCL 4 persen pada pH sekitar 7.2. Hasil ekstrak yang diperoleh mempunyai kandungan rata-rata salt-soluble protein 10.12 mg/ml untuk daging putih, dan 8.91 mg/ml untuk daging merah. Hasil pengamatan menunjukkan bahwa, tegangan permukaan dan tegangan interfasil menurun dengan laju perubahan yang semakin kecil jika konsentrasi salt-soluble protein di dalam larutan di tingkatkan, dan dengan pola penurunan hampir sama. Salt-soluble protein daging merah mempunyai kapasitas penu- runan tegangan permukaan maupun tegangan interfasial sedikit lebih besar daripada salt-soluble protein daging putih. Berdasarkan hasil pengamatan terhadap kemampuan protein untuk membentuk emulsi, ternyata bahwa jumlah minyak teremul- si meningkat dengan meningkatnya konsentrasi salt-soluble ...
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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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