Judul: Penerimaan Konsumen Setelah Mengkonsumsi Minyak Sawit Mentah (MSMn) Dan Pengaruh Konsumsi Terhadap Kapasitas Antioksidan Plasma Dan Eritrosit Di Kecamatan Dramaga, Kabupaten Bogor.
Abstrak: Vitamin A deficiency is a common problem in the world especially in developing countries including Indonesia. A solution to overcome this problem is through food consumption diversification consisted of high vitamin A or pro-vitamin A. Indonesia has been being the largest crude palm oil (CPO) producer in the world since 2006. CPO contains 500-700 ppm carotenoids compound functioning as pro-vitamin A, especially due to β-caroten content. SawitA program is a program to overcome vitamin A deficiency in Indonesia by using palm oil based product called sawitA. This program had been conducted for two months. During this program, the respondents were given free products. Crude palm oil also has potential function as antioxidant because of its carotenoids, tocopherol, and tocotrienol contents. This research is a part of SawitA program that focused on analyzing product acceptance, total plasma antioxidant capacity, and erythrocyte antioxidant capacity. Product acceptance analysis is done by home-used test method with 75 respondents in sub-district of Dramaga. Total plasma antioxidant capacity was done in 35 respondents and was analyzed by total antioxidant kit from SIGMA, meanwhile erythrocytes antioxidant capacity was analyzed by DPPH scavenged antioxidant activities method. The results showed that product was accepted 88-100% by respondents with “like” category toward taste, odor, color, and over all attributes after two weeks until two months consumption. The total plasma antioxidant capacity average increases from 0,2285±0,0644 mM to 0,3081±0,0317 mM/ after interventions. The erythrocytes antioxidant capacity average also increases from 35,16% to 46,36% after interventions. The results of t-test with 5% level of significance showed that it was significant (P=0,000) for total plasma antioxidant capacity and erythrocytes antioxidant capacity respectively. The increasing of this antioxidant capacity is estimated as the effect of antioxidant compounds activities in sawitA product such as carotenoids and vitamin E.
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Judul: Penerimaan Minyak Sawit Mentah (MSMn) Sebagai Minyak Makan dan Pengaruhnya terhadap Konsentrasi α-Tokoferol Eritrosit pada Responden Program Sawit
Abstrak: Palm oil is one of the natural sources of vitamin A and E. Palm oil contains carotenoid compounds, tocopherol and tocotrienol. Tocopherol has vitamin E and antioxidant activity that protects erythrocytes membrane from free radicals attack and prevents cell hemolysis. SawitA is an applied program to develop products based on crude palm oil (CPO) which is still containing functional compounds. This research is a part of SawitA program that focuses more to the analysis of product acceptance, consumer behaviour, food choice and bioavailability of α-tocopherol in erythrocyte of a sub population. Product acceptance analysis was conducted through home use test method using 78 respondents in Neglasari and Sukadamai Village, Dramaga, Bogor. During 2 months period, this program provided two products for respondents which are “SawitA CPO” that given at the first month and “SawitA RPOWF”at the second month. Both products were given in bottles containing 140 ml per family per month. The distribution was accompanied by socialization of the benefit and utilization of the products. The results of respondents’ characteristic analysis indicated the major respondents were female, mostly housewive, and high school graduates. Most of respondents age ranged from 22 to 45 years old. The average income per capita of the respondents is Rp. 177.147,44 per month. The results showed that product was accepted 83.3-100 % by respondents with “like” category toward taste, odor, color, and over all attributes after two weeks until two months consumption. The product most used for sauting. However, all respondents preferred “SawitA RPOWF” to “SawitA CPO” because it has better taste, more neutral flavor and brighter color. α- Tocopherol level in erythrocytes measured in three respondents increase from 129.39 – 684.90 μg/dl to 469.57 – 2764.33 μg/dl after intervention. The increasing level of α-tocopherol is estimated as the influence of vitamin E in CPO.
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Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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