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All Journal Prosiding Pendidikan Sains Alchemy Jurnal Penelitian Kimia
Teguh Endah Saraswati
Pusat Studi Jepang LPPM Universitas Sebelas Maret
Chemical Engineering, Chemistry & Bioengineering Education Energy Environmental Science Materials Science & Nanotechnology

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Mendorong Peminatan Pada Saintek Melalui Introduksi Program Super Sains Jepang di SMA Ramli, Murni -; Praseptiangga, Dana -; Saputro, Sulistyo -; Rinarto, Yudi -; -, Suciati -; -, Kusumawardani -; Saraswati, Teguh Endah
Prosiding Seminar Nasional Pendidikan Sains FKIP UNS Vol 1, No 1 (2014): Seminar Nasional Pendidikan Sains IV (SNPS IV 2014)
Publisher : Universitas Sebelas Maret Surakarta

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Abstract

Super Science High School Project (SSHs) dilaksanakan pertama kali di Jepang pada tahun 2002, dan setelah kurang lebih dua belas tahun pelaksanaanya, peminatan terhadap sains dan budaya meneliti di kalangan siswa SMA di Jepang meningkat secara signifikan. SSHs telah mengubah mainstream pembelajaran sains dari pembelajaran teksbook menjadi pembelajaran yang lebih menyenangkan dengan pendekatan konstruktivis dan berfokus pada kegiatan inkuiri siswa. Program ini di Jepang dilaksanakan dengan me-link-kan pembelajaran sains di SMA dengan laboratorium di perguruan tinggi, dan dukungan data dari Japan Science and Technology (JST), serta didanai sepenuhnya oleh pemerintah. Melihat perkembangan yang positif dari program tersebut, maka Pusat Studi Jepang Universitas Sebelas Maret telah melaksanakan riset terkait kebijakan dan implementasi SSHs di Jepang pada tahun 2013, dan tahun 2014 mulai mengkaji kemungkinan mengitroduksikan SSHs ke SMA di Surakarta dan sekitarnya. Artikel ini mengkaji prinsip-prinsip SSHs, dan kemungkinan mengadaptasikannya ke sistem pendidikan sains di Indonesia. Melalui SSHs diharapkan  pembelajaran dan peminatan sains di kalangan siswa dan guru SMA dapat meningkat, dan pada akhirnya akan melahirkan budaya berpikir saintifik, dan budaya meneliti.  
EFFECTIVENESS OF GELATIN EXTRACTED FROM CHICKEN CLAWS AS A NATURAL PRESERVATIVES FOR BEEF AND FISH Fadillah, Ganjar; Kusuma, Pramudita Putri; Saraswati, Teguh Endah
Alchemy Jurnal Penelitian Kimia Vol 10, No 2 (2014)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

Gelatin has been successfully extracted from chicken claws by acid hydrolysis method through four major stages of degreasing, demineralization, extraction and drying. The yield of extracted gelatin obtained from wet chicken claws was about 6.21% (w/w). The effectiveness of gelatin as preservative applied in beef and fish was physically, chemically and microbiologically studied by organoleptic analysis, peroxide test, bacteria inhibition test and number calculation, respectively. Organoleptic analysis by hedonic test shows there were significant differences for color and texture parameters between gelatin-coated samples and control samples at concentrations of 1:1 (w/w). Peroxide number analysis by iodometry indicates the use of gelatin in the preservation of meat and fish decreased the oxidation number. The result of inhibition test againts Staphylococcus aureus bacteria shows the gelatin concentration of 20% provided greatest halo zone diameter (inhibitory region) as 19.44±2.11 mm. The colony bacteria test shows the use of gelatin potentially inhibited the growth of bacteria up to 75%. Overall, the results conclude that gelatin extracted from chicken claws has the potential activities as a natural preservative for beef and fish. 
USE OF BATTERY CARBON AS ELECTRODES IN ARC DISCHARGE METHOD FOR FABRICATION OF CARBON-MODIFIED TiO2 Andhika, Isya Fitri; Hertiningtyas, Carissa; Aji, Ardian; Desy, Alifia; Saraswati, Teguh Endah; Patiha, Patiha
Alchemy Jurnal Penelitian Kimia Vol 10, No 2 (2014)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

Fabrication with carbon-modified TiO2by arcdischarge method in liquid medium has been studied. This research was performed in two steps including fabrication and characterization. This fabrication was done by arcdischarge method with graphite electrodes from dry cell batteries and liquid medium suspension of TiO2 in ethanol 30, 50 and 70%. A strong current was applied to electrode as 10-50 A (20-40 V). Nanocompositesformed on the liquid medium surface were collected and characterized using X-ray diffraction (XRD),scanning electron microscope (SEM) dan energy dispersive spectroscopy (EDS) to determine crystallinity, surface morphology and the constituent elements, respectively. XRD data shows that the most effective fabrication TiO2/Karbon byliquid medium in  ethanol 50%indicated from the formation of a new peak with high intensity of TiC on 2?= 36.02°. SEM data shows that the morphology of each aggregated TiO2/Karbon compared to the morphology of TiO2.In addition, EDS data shows the presence of the element carbon, titanium and oxygen in the same area indicating that the successful formation of composite material between TiO2 dan carbon.
Co-Authors Alifia Desy, Alifia Ardian Aji, Ardian Carissa Hertiningtyas, Carissa Dana - Praseptiangga Ganjar Fadillah, Ganjar Isya Fitri Andhika, Isya Fitri Kusumawardani - - Murni - Ramli Patiha Patiha, Patiha Pramudita Putri Kusuma, Pramudita Putri Suciati - - Sulistyo - Saputro Yudi - Rinarto