Judul: Kekerabatan Ikan Famili Gobi di Pantai Selatan Jawa Barat dan Sumbawa Berdasarkan Karakter Morfometrik
Abstrak: Ikan gobi merupakan marga ikan yang mendiami habitat perairan dengan kondisi salinitas berbeda sesuai dengan perkembangan hidupnya, sehingga ikan ini bersifat amphidromus. Ikan gobi mmiliki adaptasi morfologi yang unik berupa sirip perut yang menyatu (pelvic disc). Ikan gobi yang diteliti berasal dari Sungai Sejorong dan Sungai Citepus. Dari dua sungai yang berbeda perlu dilkakukan analisis morfometrik untuk mengetahui kekerabatan ikan gobi antar dua sungai tersebut. Metode yang dilakukan untuk menganalisis morfometrik ikan gobi terdiri dari dua metode, yaitu metode TNA (Truss Network Analysis) dan Metode konvensional. Hasil pengukuran morfometrik yang didapat kemudian diolah menggunakan metode Uji-T, Kruskal-Wallis, Mann-Whitney, Analisis gerombol, dan Analisis diskriminan. Hasil yang didapat dengan menggunakan metode TNA, menunjukkan bahwa terdapat perbedaan karakter antarspesies yang sama dikarenakan memiliki wilayah perairan yang berbeda., Goby fish is a genus of fish that inhabits aquatic habitats with varying salinity conditions according to its life cycle, making it amphidromous. Goby fish has a unique morphological adaptation in the form of fused pelvic fins known as the pelvic disc. The studied goby fish originated from Sejorong River and Citepus River. To determine the relationship between goby fish populations from the two different rivers, a morphometric analysis needs to be conducted. The methods used for analyzing the morphometrics of goby fish include Truss Network Analysis (TNA) and conventional methods. The obtained morphometric measurements are then processed using t-test, Kruskal-Wallis test, Mann-Whitney test, Cluster Analysis, and Discriminant Analysis. The results obtained through TNA method indicate differences in characteristics among the same species due to their different aquatic habitats.
Keyword: relationship, goby fish, morphometric characteristics, phenotypic differences, TNA

Judul: Karakterisik Fenotip Morfometrik dan Genotip RAPD (Random Amplified Polymorphic DNA) Ikan Betok Anabas testudineus (Bloch, 1792)
Abstrak: The identification of phenotype and genotype is needed for mapping the population structure geographically of a fish species in the waters territory. The purpose of this research was to analyze the genetic variability based on the morphometric phenotype characteristics and RAPD genotypes of climbing perch fish population of Kalimantan, Java and Sumatera. Characterization of phenotypes were conducted using a method of morphometric truss and typing of genotype by using three primers of RAPD (OPA-07, OPA-02, and OPC 05). The polymorphism level and heterozygosity of climbing perch fish population of Kalimantan was higher than the population of Java and Sumatera, wich reached 39,29% and 0,16. The genetic distance between climbing perch fish population of Kalimantan, Java and Sumatera ranged from 0,17 to 0,39. The population of Kalimantan showed the similarity of morphometric truss with Sumatera population about 49,97%, while with the population of Java was 24,96%.
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Judul: Isolasi senyawa sinamaldehida dari minyak kulit kayu manis sedagai antioksidan
Abstrak: Cinnamaldehyde is a major essential oil component of cinnamon bark. Cinnamon oil was isolated by using water distillation method that yielded 0.93% (w/w) or 0.95% (v/w). Gas chromatography mass spectrometry (GCMS) of cinnamon oil showed that the main component of the oil is a trans-cinnamaldehyde 32.8% and 3-phenyl-2-propenal 22.9%. The oil was further isolated for cinnamaldehyde by using preparative thin layer chromatography method at Rf of 0.62. GCMS analysis showed that cinnamaldehyde content was 89.1%. Furthermore, the cinnamaldehyde was tested for its antioxidant activity. The isolated product has antioxidant activity with IC50 of 5.06 mg/L as compared with positive control using butylated hydroxytoluene, which has the activity of 10.4 mg/L.
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