Judul: Pengembangan dan Pengukuran Kinerja Analitik Spektrofotometer Sinar Tampak ‘KuantiVis’ Berbasis Detektor Charge-couple Device
Abstrak: The advancement of technology provides alternative ways to develop spectrophotometer using simple components such as web camera with chargecouple device detector. The objective of the research is to develop visible spectrophotometer ‘KuantiVis’ with simple electronic components and web-based software Spectral Workbench as data acquisition system. The performance of KuantiVis was determined by validation of methyl red analysis and rhodamine B measurement in food sample (pacar cina). The whole result was compared with analysis using Spectronic 20D+ and Genesys 10UV. The analytical performance of KuantiVis for methyl red showed linearity with R2 was 0.9629, limit of detection was 0.6953 ppm, limit of quantitation was 2.1070 ppm, recovery was 110.00%, and relative standard deviation was 7.59%. The overall results met the Association of Analytical Communities standard but have not equal to the performance of Spectronic 20D+ and Genesys 10UV. Rhodamine B in pacar cina was 0.0022 (%w/w) based on measurement using KuantiVis. This result was not significantly different at the confidence level 95% using t test and F test as compared to the result using Spectronic 20D+ and Genesys 10UV.
Keyword: visible spectrophotometer, rhodamine B, methyl red, charge-couple device, Bogor Agricultural University (IPB)

Judul: Development of Portable Spectrophotometers and Performance Evaluation of Ponceau 4R Food Colorants Substances
Abstrak: Spektrofotometer dapat dikembangkan dari komponen elektronik yang tersedia secara umum menjadi spektrofotometer portabel. Penelitian ini bertujuan mengembangkan spektrofotometer jinjing dan menentukan uji kinerja analitiknya. Spetrofotometer jinjing yang disusun oleh komponen utama yang terdiri dari lampu light emitting diode sebagai sumber cahaya, lapisan optik digital versatile disks sebagai kisi, web camera Logitech c920 sebagai detektor dan akuisisi data melalui perangkat lunak Thereminospectro. Uji kinerja spektro menggunakan larutan standar Ponceau 4R dan dibandingkan dengan spektrofotometer komersial Hitachi Spectro U-2800. Spektrofotometer jinjing dengan ukuran optimum menghasilkan spektrum larutan standar yang sebanding dari hitachi spectro u-2800. Keduanya menunjukkan linearitas yang sangat baik karena memenuhi syarat keberterimaan linearitas pada metode spektrofotometri. Dengan demikian, spektrofotometer jinjing yang dikembangkan dapat menjadi alternatif untuk spektrofotometer komersial. Kata kunci: digital versatile disks, light emitting diode, ponceau 4R, spektrofotometer, web camera, Spectrophotometers can be expanded from commonly available electronic components to portable spectrophotometers. This study aims to develop a portable spectrophotometer and determine its analytical performance test. A portable spectrophotometer composed of main components consisting of a light-emitting diode lamp as a light source, an optical layer of digital versatile disks as a grid, a Logitech c920 web camera as a detector, and data acquisition via the Thereminospectro software. Spectro performance test using standard solution Ponceau 4R and compared with a commercial spectrophotometer Hitachi Spectro U-2800. The portable spectrophotometer with the optimum size produces a standard solution spectrum comparable to that of the Hitachi Spectro u-2800. Both of them show very good linearity because they meet the requirements for linearity acceptance in the spectrophotometric method. Thus, the developed portable spectrophotometer can be an alternative to commercial spectrophotometers. Keywords: digital versatile disks, light emitting diode, ponceau 4R, spectrophotometer, web camera
Keyword: Spektrofotometer UV-VIS, Spektrofotometer jinjing, LED, DVD, Webcamera, Ponceau 4R

Judul: Diferensiasi sel punca mesenkimal tali pusat Macaca fascicularis menjadi sel otot jantung
Abstrak: Serangan jantung infark miiokardial adalah suatu keadaan dimana secara tiba-tiba terjadi pembatasan atau pemutusan aliran darak ke jantung, yang menyebabkan jaringan otot miokardium mati karena kekurangan oksigen. Proses iskemik yang lama mengakibatkan kematian jaringan otot miokardium. Badan Kesahatan Dunia (WHO) memperkirakan pada tahun 2020 jumlah penderita penyakit jantung iskemik akan menempati urutan pertama.
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