Judul: Pengujian Kualitas Oksidasi Primer dan Sekunder Minyak ikan Komersial Produk Dalam Negeri dan Impor
Abstrak: Fish oils in Indonesian market come from domestic and import in capsule form. The purpose of this study was to analyze the fatty acid content, the primary and secondary oxidations of fish oil in domestic and import product, and to compare its quality. The highest FFA in import fish oil was type B (1,56 ± 0.01) and the lowest was type D (0,72 ± 0,07). The result of peroxide value, anisidin value, and the total oxide value of import fish oil had a lower value than domestic one. The highest peroxide value in import fish oil was type C (19,91 ± 0,71) and the lowest was type A (9.53 ± 0.95). The highest anisidin value in import fish oil was D (6,37 ± 0,25) and the lowest found in type B (2.00 ± 2.5). The highest total oxidation of import fish oil was C (46,93 ± 9,07) and the lowest was A (27,54 ± 9,41). Import fish oil contained more fatty acids compared than the domestic fish oil.
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Judul: Comparative Study of Fish Oil Purification from Surimi Processing Byproducts Using Bleaching and Degumming-Bleaching Methods
Abstrak: Kualitas minyak ikan merupakan suatu parameter krusial yang perlu diperhatikan untuk mendapatkan produk dengan stabilitas oksidatif yang baik. Tahapan pemurnian merupakan sebuah upaya yang dilakukan untuk mendapatkan minyak ikan dengan kualitas yang baik dan memenuhi standar baku mutu. Proses pemurnian minyak ikan hasil samping produksi surimi dilakukan dengan menerapkan proses bleaching dan kombinasi degumming-bleaching untuk mengetahui efek pemurnian terhadap kualitas minyak ikan yang dihasilkan. Hasil pemurnian dengan metode bleaching menggunakan adsorben magnesol XL konsentrasi 5% dianggap mampu memberikan hasil yang lebih baik pada sampel minyak ikan hasil ekstraksi menggunakan metode high pressure selama 5 menit. Hasil pemurnian menunjukkan bahwa parameter bilangan asam dan nilai anisidine yang dihasilkan sudah memenuhi standar baku mutu yang ditetapkan oleh CODEX 2021., Fish oil quality is a crucial parameter that must be considered to obtain a product with good oxidative stability. The purification stage is an effort to obtain high-quality fish oil that meets quality standards. The purification process of fish oil made from surimi by-product was carried out using a bleaching process and a combination of degumming-bleaching to determine the effect of purification. The results of purification with the bleaching method using 5% Magnesol XL adsorbent are considered to be able to provide better results on fish oil samples extracted using the high pressure method for 5 minutes. The purification results showed that the acid value and anisidine value parameters produced met the quality standards set by CODEX 2021.
Keyword: Degumming, purification, bleaching, fish oil

Judul: Sistem Informasi Geografis untuk Pola Aktivitas Manusia dengan Pemodelan Data Spatio-Temporal
Abstrak: The human activity in a given time period will shape its pattern. This research develops a spatiotemporal data model to support the prediction of human existence based on activity-pattern and also visualizes the activity locations in a GIS environment. This so-called mobility oriented spatiotemporal data model conceptualizes the spatial and temporal interaction of activity behaviour using the concept of mobility. In other words, activity patterns are conceptualized as a sequence of staying at or traveling between activity locations. The model can support the analysis and queries of activities from different perspectives, i.e. queries can be time-oriented, person-oriented, activity-oriented, and location-oriented. A prototype system based on the activity data modelling is implemented in MySQL 5.0.27 as DBMS with using PhpMyAdmin 2.9.1.1 software. Spatial database is developed with using software QuantumGIS and ArcView. The system could be accessed online through a web browser with MySQL as its database storage and Pmapper framework as the tools used in visualizing the activity locations.The information were provided in the form of activity attribute-data as the user requested and graphical-data (map) which contains information about its activity locations.
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