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: 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: Karakteristik Suara Song Burung Kenari (Serinus canaria) Postur Besar dan Kecil.
Abstrak: Burung kenari (Serinus canaria) memiliki nyanyian yang sangat bervariasi dengan durasi yang panjang dan merupakan tipe burung bernyanyi open learners. Penelitian ini bertujuan menganalisis karakteristik suara song burung kenari (Serinus canaria). Penelitian dilakukan pada bulan April sampai Juni 2017 di Bogor, Jawa Barat. Perekaman suara song terhadap 12 ekor burung kenari jantan dilakukan dengan menggunakan mikrofon Sennheiser ME66 dan alat perekam Sony PCM-D50. Burung kenari yang digunakan merupakan burung yang pernah mengikuti kontes burung kicau dan memiliki predikat juara kontes burung. Amplitudo, durasi suara, frekuensi, dan volume suara burung dianalisis dengan menggunakan software Raven Pro 1.4. Data tersebut selanjutnya dianalisis deskriptif. Hasil analisis suara menunjukkan bahwa burung kenari memiliki banyak syllable, suara song rapat dan tidak terputus-putus, tempo yang cepat, dan adanya pengulangan suku kata pada setiap suara song. Burung kenari postur kecil memiliki rataan durasi lebih panjang dibandingkan dengan kenari postur besar, tetapi burung kenari besar memiliki rataan max amplitudo, average power, max power, min amplitudo, peak amplitudo, dan peak frekuensi.
Keyword: karakteristik suara (song), kenari, syllable