Judul: Penerimaan dan Preferensi Rumah Tangga dan Jasa Boga terhadap Minyak Goreng Curah yang Difortifikasi Karoten dari Red Palm Olein (RPO)
Abstrak: The purpose of this research was to find out acceptance and preference of households and catering to non-branded cooking oil fortified with carotene from Red Palm Olein (RPO). The respondent in this study was 30 peoples respectively for households and catering. Data was collected through interviews and discussions using a questionnaire. Data of respondent’s acceptance and preference were analyzed using descriptive statistics and Friedman test. Average cooking oil used by households respondent was 185.35+70.21 g/day and catering was 3.87+2.46 kg/day. Most households (73.33%) and catering (66.66%) could not accept cooking oil fortified with carotene from RPO. More than half of households and catering, respectively 66.67% and 63.33%, could not accept the fried product using fortified cooking oil. Friedman test showed that there were differences in both respondent’s acceptance to nonfortified and fortifified non-branded cooking oil (p<0.05). Both households and catering respondent preferred nonfortified cooking oil.
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Judul: Retensi Vitamin A dan β-karoten Minyak Sawit yang Difortifikasi Selama Penggorengan
Abstrak: Palm oil can be a good carrier of the vitamin A fortification due to its stability and its wide cooking application, so its consumption contributes to community’s nutrition. The objective of this research is to get information about the effect of fortificants to retention of vitamin A and β-carotene in fortified palm oils. Four palm oils used in this research were palm oil fortified with β-karoten from red palm olein (RPO) 47.08 IU/g, fortified with vitamin A 59.69 IU/g, fortified with combination A (30 IU RPO, 15 IU vitamin A) 45.64 IU/g and fortified with combination B (15 IU RPO, 30 IU vitamin A) 45.95 IU/g. Fortified oils were used to fry tofu by three replicated shallow frying and to stir-fry sprouts. The result showed that the retention of fortificants decreased by frying replication. In the first day of frying, the retention of fortificants were not significanly different (p=0.05), in a range 85.52%-88.22%. In the second and third frying, it was known that β-karoten had lower stability than vitamin A as fortificant. Fortificant combination A and B had the same stability. The peroxide value of the oils increased until the second frying, then decreased in the third frying. The free fatty acid (FFA) percentage increased minimally, except palm oil fortified with vitamin A, the FFA remained same. The highest yield of fortificant in cooked sprouts was vitamin A (63.37%), followed by combination B (53.42%), combination A (50.60%), and RPO (34.86%).
Keyword: vitamin A, retention, red palm olein, fortification, β-carotene

Judul: Mathematical model of Hematopoietic Stem Cell in Chronic Myelogenous Leukemia with and without Therapy
Abstrak: Leukemia or blood cancer is a diverse group of neoplastic disease, characterized by the multiplication of abnormal leukocytes or malignant transformation of blood-forming cells in bone marrow and lymphoid tissues. One of the most common types of leukemia is Chronic Myelogenous Leukemia (CML), which is usually diagnosed by the presence of certain chromosomal abnormalities, the so-called Philadelphia chromosome (Ph). One of the treatments of CML is Granulocyte Colony-Stimulating Factor (G-CSF). In this paper, we discuss two Hematopoietic Stem Cell (HSC) models, i.e. HSC without treatment and HSC with G-CSF treatment. The model of HSC without treatment included three equations representing the dynamics of HSC, leukocyte and platelet. Whereas, the model of HSC with G-CSF treatment includes the previous three equations and adds two more equations representing G-CSF injection and G-CSF circulation. The stability behavior of the system approaching the equilibrium points in the simulation study is carried out using Mathematica 7.0. The simulation results show that the G-CSF treatment can successfully decrease the number of HSC, which means reducing the CML.
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