Judul: Pemekatan vitamin minyak sawit dalam isopropanol dengan menggunakan evaporator vakum berputar
Abstrak: Vitamin deliciency is a disease where the whole body lacks of vitamin. The deficiency of vitamin A is the principal problem that descend upon the Indonesian children. The data of Department of I-Iealth years 2003 stated that 10 million of I~ldonesian children (n~onth 6 until year 5) experienced of vitamin deficiency. These amount were a half or 50 percent from the whole population of the children under five in Indonesia. Fortification is a solution to overcollie vitamin A deficiency, because of fortification, the contents of vitamin A from the foods could be higher. So, somebody needs would have fullfilled. Vitamin A could be made by the body itself by the existence of karotenoid substance. The most source of ltarotenoid is from palm oil with the amount of karotenoid is about 500 ppm and vitamin E is about 600-1 000 ppm. The bleaching proses on thc oil's production brolte niinor component like betaltaroten and alfatokofcrol indirectly. These process was done because the consumer didn't reddish of oil from tlie coloured pigment. The vitaillin separation process on palm oil is done by using tlie EVB, where the palm oil is made thick. EVB was chosen beca~~osfe its ability in steam the liquids under the atmosphere pressure (vacuum). So, that the liquids that can't be easier get degradation on the high temperature is like vitamin.
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Judul: Reformulasi Mikroenkapsulasi Minyak Sawit dengan Teknik Koaservasi, Pengeringan Lapis Tipis, dan Penyerapan SiO2
Abstrak: Cases of vitamin A deficiency (VAD) are often found in Indonesia. On the other hand, Indonesia is the largest palm oil producer in the world. The content of β-carotene, which is a provitamin A, in palm oil is relatively high, so that it has a great potential for overcoming cases of VAD. By microencapsulation process of palm oil, β-carotene content in palm oil will be more stable and have a longer shelf life. There are three methods used in this study, namely coacervation, thin-layer drying, and SiO2 absorption technique – teoretically they are suitable for encapsulating β-carotene in palm oil. Results of ANOVA test at 5% significance level showed that the differences in methods significantly affect water absorption, solubility in water, yield, efficiency, and the β-carotene content and retention of microencapsulate. The microencapsulate made by thin-layer drying method had the highest levels of β-carotene at 200.16 ppm with retention 68.89%. It also had low water absorption and high water solubility so that it can be applied as a premix.
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Judul: Karakteristik Suara Beberapa Jenis Kelelawar pada Kawasan Karst Gua Gudawang
Abstrak: Beberapa jenis kelelawar diketahui memiliki kemampuan ekolokasi. Pola dan karakter suara yang dihasilkan kelelawar dalam ekolokasi berbeda-beda, sehingga sangat berpotensi dijadikan sebagai bahan identifikasi jenis. Penelitian ini bertujuan untuk mengidentifikasi karakteristik suara beberapa jenis kelelawar di Gua Gudawang serta menentukan faktor penentu dalam proses identifikasi melalui suara. Penangkapan kelelawar di lakukan di lima Gua kawasan karst Gua Gudawang. Kelelawar yang tertangkap direkam suaranya menggunakan Pettersson M500. Hasil analisis statistik menunjukkan bahwa sembilan jenis kelelawar yang tertangkap, selain Rhinolopus stheno dengan Hipposideros sp. serta Hipposideros diadema dengan Miniopterus australis, dapat dibedakan berdasarkan Fpeak gelombang suaranya. Hal ini menunjukan bahwa Fpeak merupakan faktor yang paling sesuai dijadikan dasar identifikasi jenis melalui suara. Rhinolophus affinis, R. stheno, R. pusillus, Hipposideros diadema, H. larvatus, Hipposideros sp., Miniopterus australis, M. schreibersii, dan Megaderma spasma secara berturut-turut memiliki Fpeak 71 kHz, 85 kHz, 103 kHz, 99 kHz, 67 kHz, 85.3 kHz, 68 kHz, 46 kHz, dan 47 kHz.
Keyword: kelelawar, suara, identifikasi, Gua Gudawang