Judul: Kinetika Oksidasi Termal Minyak Goreng Sawit Curah dengan Fortifikasi Vitamin A
Abstrak: Vitamin A is one of an essential vitamin for human body. However, the deficiency of vitamin A is still in the spotlight not only in Indonesia but also in the world. Fortification of Vitamin A into cooking oil is one of solution to resolve this problem. In the other hand, the stability of vitamin A is an important thing to be studied. There are factors that influence the stability of vitamin A such as heat and oxygen. In this present study, the cooking oil that will be fortified has a difference of initial peroxide number i.e. 0.00; 3.99; and 8.99 meq active O2/kg oil. Besides that, the cooking oil that used has differences of temperature storage i.e. 60; 75; and 90°C. The objective of this study was to obtaining the model of thermal oxidation kinetics of cooking oil fortified with vitamin A levels are three types of different initial peroxide. The parameter that be used in this kinetic-study were the peroxide number, free fatty acid level using titrimetry analysis, and the level of vitamin A using HPLC. The result show that the formation of peroxide number and free fatty acid followed the zero order meanwhile the degradation of vitamin A followed the order 1. The reaction rate constant (k) and the energy of activation were calculated by using arrhenius equation. According to the result, the k-value from all of the parameter tends to increase by increasing of the time. The value of activation energy for each oxidation parameter were in ranges 44-64 kJ / mol for peroxide number, 48-64 kJ / mol for free fatty acid and 62-83 kJ / mol for degradation of vitamin A. According to the activation value that obtained, the fortified cooking oil with initial peroxide number 0.00 meq active O2/kg of oil is the most sensitive oil sample to the temperature in comparison with the other oil sample.
Keyword: peroxides number., temperature, stability, fortification, Vitamin A

Judul: Stabilitas Minyak Goreng Sawit Curah yang Difortifikasi dengan Vitamin A terhadap Fotooksidasi
Abstrak: Degradation of vitamin A is affected by light. The objective of this research is making an analysis correlation between oxidative parameter in oil (peroxide and free fatty acid value) and vitamin A value. Palm oil fortified vitamin A with different initial peroxide value (0.00, 3.99, and 8.99 meq O2 active/kg oil) is used as samples. Photostability in oil is measured by keep the samples at different light exposure (5000, 10000, and 15000 lux). The result of this research showed that free faty acid is not a good parameter to decide shelf life of oil because its production is not affected by light. Shelf life of palm oil fortified vitamin A are 110.11 hours, 44.27 hours, and 16.34 hours for samples with initial peroxide value 0, 3.99, and 8.99 meq O2 active/kg oil. The most compatible palm oil-fortified vitamin A are palm oil with initial peroxide value 0.00 and 3.99 meq O2 active/kg oil.
Keyword: palm oil fortified vitamin A, photooxidation

Judul: Karakteristik Anatomi Skelet Kepala Buaya senyulong (Tomistoma schlegelii).
Abstrak: Buaya sepit atau senyulong (Tomistoma schlegelii) merupakan jenis buaya asli Indonesia yang berhabitat di sungai-sungai Sumatera, Kalimantan, dan juga pedalaman Sulawesi. Salah satu ciri khas buaya senyulong adalah bentuk moncong yang runcing dan sempit, namun hingga saat ini informasi mengenai struktur skelet kepala buaya senyulong sangat terbatas. Penelitian ini bertujuan untuk mempelajari karakteristik anatomi skelet kepala buaya senyulong yang dikatikan dengan fungsi dan perilakunya. Penelitian dilakukan secara eksploratif dengan melakukan pengamatan, pencatatan, dan pengambilan gambar dari skelet kepala buaya senyulong. Skelet kepala berukuran panjang 70 cm, lebar 29 cm, dan tingggi 17 cm dengan permukaan kasar pada os nasale, os frontale, os maxilla, os mandibula, os lacrimale, os jugale. Jumlah gigi pada buaya ini sebanyak 78 buah, terdiri dari 4 buah gigi premaxila, 16 buah gigi maxila, dan 19 buah gigi mandibula. Pada regio orbitalis ditemukan dua pasang fenestrae temporales yang berkembang baik. Fenestra supratemporale merupakan lubang oval yang membentang di sepanjang os parietale. Fenestra infratemporale berbentuk segitiga dan dibatasi oleh os squamosum, os postorbitale, os jugulare, dan os quadratum. Os mandibula hewan ini mempunyai symphysis mandibularis yang panjang yaitu garis yang melintang di corpus mandibulae. Secara fungsional ukuran symphysis mandibularis berkaitan dengan adaptasi hewan terhadap diet makan.
Keyword: kepala, moncong, Tomistoma schlegelii