Judul: Desain Formulasi Nanoemulsi Pewarna Alam Ekstrak Kayu Secang (Caesalpinia Sappan Linn)
Abstrak: Sappan extract formulated into nanoemulsion with a fixed concentration of 10% of the weight of the formulation, emulsifier used is Span20, Span80, Tween20 and Tween80 with a percentage of 2.5%, 5%, and 10% of the weight of the formula to single formulation and 1.25 %, 2.5%, and 5% of the weight formula for dual formulation, while the solvent used was distilled water with a percentage of 87.50%, 85.00%, and 80.00% of the weight of the formula. This thesis aims to obtain nanoemulsion formulation design natural dyes extract the sappan wood, which involves determining the optimal conditions formulation nanoemulsion, observation of stability that occurs in formulation nanoemulsion to produce emulsion dyes. Preliminari results with visual observation/visible, showing that the best formulation is the formulation of Tween20 (10%), formulation Tween80 (10%), formulation Span20-Span80 (1.25%), formulation Span20-Tween80 (5%), formulation Span80-Tween20 (5%), formulation Span80-Tween80 (5%), and the formulation Tween20-Tween80 (5%). Results of viscosity measurements showed all formulations nanoemulsion produce a low viscosity values between 4.00 to 15.00 cP. Results of particle size, measurements showed a single formulation using emulsifier Tween and double combination formulation Tween-Tween produces formula nanoemulsion with a larger particle size diameter >100 nm), the double combination formulation Span-Span and Span-Tween produce formula nanoemulsion with a smaller particle size diameter (<100 nm). The measurement results show the value of the particle size distribution polydispersity indeks values of the seven formulations nanoemulsion between 0.187 to 0.782, these states generally formulation nanoemulsion meets all standards as the particle size distribution of system nanoemulsion. Results of emulsion stability measurements/zeta potential indicate single formulation Tween20, double combination formulation Tween20-Tween80 and Span80-Tween80 produce zeta potential values more positive than +30 mV, this indicates that a stable formulation, single formulation Tween80, double combination formulation Span20-Span80, Span20-Tween80 and Span80- Tween20 generating value but not negative than -30 mV, this show is not sufficiently stable formulation within a certain period. Color intensity measurement results show that using a single formulation emulsifier Tween and double combination formulation Tween-Tween produces a smaller value for the brightness (L), degree of redness (a), and degree of yellowness (b), compared with the double combination formulations Span-Span and Span-Tween.
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Judul: Formulasi Nanoemulsi Minyak Sawit dengan High-Pressure Homogenizer
Abstrak: Indonesia is the largest palm oil producer in the world. One of the palm oil derivative products is palm oil emulsion as its β-carotene solubility in water is low and easily degraded through processing. The use of nanotechnology in the manufacture of palm oil nano emulsion can improve its solubility in water, its bioavailibility in the digestive tract, and emulsion stability. This study observed the effect of emulsifier Tween 20 and Tween 80 as much as 10% and 30% (w/w) oil base and chitosan 0%, 0.5%, and 1% (w/v) emulsion base to the particle size and stability. The use of Tween 80 provided better particle size and stability of β-carotene than the use of Tween 20. The use of an emulsifier at a concentration of 30% showed a smaller particle size compared with the use of a concentration of 10%. The use of chitosan to 1% can increase the size of the particles and prevent oiling off, but can accelerate the aggregation of the emulsion, compared to 0.5% chitosan use. The selected formula is the use of 30% Tween 80 and 0.5% chitosan.
Keyword: β-carotene, particle size, nanoemulsion, emulsifier, chitosan

Judul: Infectious laryngo tracheitis pada unggas
Abstrak: Infectious Laryngo Tracheitis merupakan penyakit pada unggas yang disebabkan oleh virus yang mempunyai sasaran saluran pernapasan bagian atas Penyebab penyakit Infectious Laryngo Tracheitis Univers (ILT) adalah virus yang termasuk kelompok virus Herpes sering disebut Tarpeia avium. Virus tersebut tersusun dari inti asam deoksi ribonukleat yang dilengkapi dengan pembung- kus yang merupakan derivat dari lemak serta mempunyai garis tengah antara 195-250 nano meter. Pada temperatur kamar virus tersebut dapat bertahan selama 15 hari dalam keadaan tanpa pengawetan. Virus penyebab Infectious Laryngo Tracheitis mempunyai kepekaan terhadap zat kimia golongan pelarut lemak seperti: phenol dan kresol. Induk semang definitip penyakit Infectious Laryngo Tracheitis adalah ayam, tetapi burung merak, itik dan kalkun pernah dilaporkan dapat terinfeksi. Mammalia dan golongan rodensia merupakan hewan yang tahan terhadap infeksi penyakit ini. Pada manusia penyakit Infectious Laryngo Tracheitis diduga mempunyai hubungan dengan timbulnya gangguan neuralgia yang bersifat sub-akut akibat infeksi virus Herpes jenis lain yang disebut virus Sub-acute Myelo Optico Neuropathi (virus SMON).
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