Judul: Karakterisasi dan Bioaksesibilitas Mikroenkapsulasi Zat Besi pada Formulasi Bahan Penyalut
Abstrak: The low availability of iron in the body due to the interaction of iron with inhibiting components in food and human body. Microencapsulation proses a potential to solve that problem by protecting iron (Fe) from the environment. This research was aimed to study the characteristics of iron microencapsulate made from various materials and different ratios, and to obtain bioaccessibility value of encapsulated iron. Iron (Fe) microencapsulation was performed by spray drying technique with three mixing variation of coating agent which were maltodekstringum arabic, maltodekstrin-whey protein, and gum arabic-whey protein. Every mixing variation of coating agent was made in three different ratio, which were 60:40, 70:30, and 80:20. Iron content was measured using Atomic Absorption Spectrophotometer (AAS). Iron (Fe) microencapsulate has a moisture content from 3.47-6.91 %, particle size from 14-44 μm, viscosity from 21-51 cP, and recovery Fe from 43.17-103.88 %. The highest iron(Fe) microencapsulate’s bioaccessibility was obtained from microencapsulate with coating agent maltodextrin-gum arabic 60:40 whose recovery rate was 11.2 %.
Keyword: Bogor Agricultural University, microencapsulated of iron., characterization, bioaccessibility

Judul: Fortifikasi Mikroenkapsulat Zat Besi pada Cassava Flakes
Abstrak: Masalah paling umum penggunaan zat besi khususnya ferrous sulphate heptahydrate sebagai fortifikan yaitu perubahan warna dan mudahnya berinteraksi dengan komponen pangan lainnya. Teknik mikroenkapsulasi berpotensi menyelesaikan permasalahan tersebut dengan melindungi zat besi (Fe) dari kondisi lingkungan. Penelitian bertujuan untuk mempelajari karakteristik mikroenkapsulat Fe, pengaruh fortifikasi Fe terhadap karakteristik tepung ubi kayu dan cassava flakes terfortifikasi. Fe difortifikasikan dalam bentuk mikroenkapsulat Fe dan Fe sediaan bebas. Mikroenkapsulasi Fe dilakukan dengan teknik spray drying dengan maltodekstrin dan whey sebagai bahan penyalutnya. Kandungan zat besi diukur menggunakan Atomic Absorption Spectrophotometer (AAS). Mikroenkapsulat Fe memiliki kadar air dan ukuran partikel yang sesuai dengan karakteristik produk mikrokapsul hasil spray drying. Aplikasi mikroenkapsulat Fe dengan dosis 4,28 mgFe/0,7kg dapat meningkatkan kandungan Fe namun tidak mempengaruhi kadar air, warna, dan derajat putih tepung ubi kayu terfortifikasi. Cassava flakes terfortifikasi mikroenkapsulat Fe memiliki kadar air yang sama dengan cassava flakes terfortifikasi Fe sediaan bebas, namun tingkat kecerahan cassava flakes terfortifikasi mikroenkapsulat Fe lebih baik. Bioaksesibilitas Fe cassava flakes terfortifikasi mikroenkapsulat Fe lebih besar (49,65%) dibandingkan cassava flakes terfortifikasi Fe sediaan bebas (34,40%). Panelis mampu mendeteksi adanya penambahan fortifikan Fe baik dalam bentuk mikroenkapsulat maupun sediaan bebas. Cassava flakes terfortifikasi mikroenkapsulat Fe lebih disukai, terutama ketika dikonsumsi bersama susu.
Keyword: cassava flakes, fortifikasi, mikroenkapsulat, zat besi

Judul: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
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