Judul: Studi Perbandingan Hasil Tangkap Jaring terhadap Populasi Ikan Karang di Perairan Pulau Semak Daun, Kepulauan Seribu
Abstrak: Penelitian ini dilakukan di perairan Pulau Semak Daun Kepulauan Seribu, Jakarta Utara, antara tanggal 16 Juli sampai 6 September 1989. Tujuan Penelitian ini adalah untuk mengetahui perbandingan hasil tangkapan jaring keranjang yang dipasang pada terumbu karang berkondisi jelek, sedang, bagus dan memuaskan; serta untuk mengkaji jaring keranjang sebagai salah satu alternatif alat tangkap ikan karang.
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Judul: Kondisi terumbu karang di daerah sekitar pelabuhan dan non pelabuhan di perairan Pulau Kelapa  dan Pulau Harapan, Kepulauan Seribu, Jakarta
Abstrak: Penelitian ini bertujuan untuk mengetahui dan membandingkan kondisi terumbu karang yang berada pada daerah pelabuhan dan non pelabuhan. Kegiatan penelitian ini dilakukan pada tanggal 23 hingga 28 April 2007 bertempat di perairan Pulau Kelapa dan Pulau Harapan, Kepulauan Seribu Jakarta. Pengamatan terumbu karang dan ikan karang menggunakan metode LIT (Line Intercept Transect) dan metode visual sensus. Data yang didapatkan dianalisis berdasarkan persentase penutupan karang keras (HC), indeks mortalitas karang (IMK), serta indeks keanekaragaman (H'), keseragaman (E) dan dominasi (C) ikan karang. Parameter kualitas air yang diukur diantaranya suhu, kedalaman, kecepatan arus, kecerahan, salinitas, derajat keasaman (pH), oksigen terlarut (DO), fosfat dan nitrat perairan
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Judul: Characterization of The Chemical Constituents and Antioxidant Capacity of Green and Oolong Teas (Camellia sinensis) Manufactured in Thailand
Abstrak: Tea in Thailand most manufactured in northern area, especially Chiang Rai, Chiang Mai, Nan, and Mai Hang Son province. The aim of this study was to determine and compare the chemical compositions and antioxidant capacity of 4 important Thai tea products. A total of 13 of green teas of 2 major cultivars, assamicaand cv. oolong no.12 (chin hsuan oolong) and 26 of oolong tea of 2 major varieties, cv. oolong no. 12 and cv. oolong no. 17 (chin shin oolong) were collected from 18 factories in Chiang Rai province in 2011. The total polyphenol content was determined according to International Organization for Standardization (ISO 14502-1). For antioxidant capacity, DPPH radical scavenging activitiy assay and ferric reducing antioxidant power assay were determined. The catechins content and caffeine content were determined using HPLC by ISO method (ISO-14502-2). Results showed that about 95% of the 39 tea samples manufactured in Thailand had moisture content below 7%, 5% of tea samples being above 7%. The total polyphenol content in green tea was found to vary from 11.86 to 21.19%GAE, while in oolong tea was found in a range of10.22 to 17.57%GAE. The caffeine content in green tea samples were in a range of 1.69 to 3.7%, while in oolong tea samples were in a range of 1.61 to 3.26%. The catechin content in green tea samples were in a range of 8.31-14.08%, while in oolong tea samples were in a range of 6.81-12.46%. The antioxidant capacity in green tea samples was 164.01 mmole TE/100 g dry basis, while in oolong tea samples was about 132.73mmole TE/100 g dry basis. This study provided useful information for the tea industry in Thailand and other countries in processing and selecting a good-quality tea.
Keyword: Antioxidant capacity, Camellia sinensis, Green tea, Oolong tea, Thailand