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Ika Oktavianawati
Jurusan Kimia Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Jember
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Education Health Professions Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Dye-Sensitized Solar Cells (Dssc) Using Natural Dyes Extracted From Red Cabbage And Counter Electrode Based Tio2-Graphite Composites Tanti Haryati; Tri Mulyono; Ika Oktavianawati; Wawan Badrianto
UNEJ e-Proceeding Indonesian Protein Society (IPS), International Seminar and Workshop 2014
Publisher : UPT Penerbitan Universitas Jember

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Abstract

Dye sensitized solar cells (DSSC) has been a popular research topic which benefits in high energy conversion efficiency and less cost in fabrication process. The components of DSSC consist of photoanode, electrolyte, and counter electrode that are arranged as sandwich. The photoanode contains ITO (indium tin oxide) glass covered by TiO2 particles, while the counter electrode contains ITO glass covered by composite of TiO2-graphite as counter electrode and red cabbage extract, as a dye agent. The cell was fabricated in various amount of graphite, i.e 10%; 30%; and 50 %, and time of soaking i.e 2; 13; 24; and 48 hours. The performance of the solar cell per active area of ​​1 cm2 was tested on irradiation of 75 Watt halogen lamp (distance 15 cm) and measured by multimeter and rheostat. The optimum synthesis condition of DSSC was obtained with composition of TiO2:graphite on the counter electrode is 70%:30 %, and soaking time in dye agent is for 24 hours. This cell results in an optimum performance, Isc = 0.028 mA ;Voc = 0.344 mV, FF = 0.29 and = 0.0055 % efficiency. Keywords: DSSC, Red Cabbage, Counter Electrode
The Influence of Supplementary Feeding (Probiotic and Azolla pinnata) on Protein and Amino Acids Content in Patin Fish Ika Oktavianawati; Meirinda Hermiastuti; Novita Rahmawati; Wuriyanti Handayani; I Nyoman Adi Winata
UNEJ e-Proceeding Indonesian Protein Society (IPS), International Seminar and Workshop 2014
Publisher : UPT Penerbitan Universitas Jember

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Abstract

One of the important factors in fish farming is feeding. Feed intake is able to affect the growth and production of fish, especially on nutritional content such as protein. In this research, Patin (Pangasius djambal), a catfish, were given variations in feed, i.e pellets only (P1) as a control; pellets and probiotic (P2); pellets and Azolla pinnata (P3). A. piñata (known locally as matalele) is a water plant that has complete essential amino acids including threonine, valine, methionine, isoleucine, leucine, phenylalanine, lysine, histidine, arginine and tryptophan. Probiotic is living microbial cells that affects the speed of feed fermentation and helps the absorption of food in the gastro intestinal tract. The results show that P2 gains more weight than P1 and P3. This feed variations also give different levels of crude protein in fish meat P1, P2, and P3 that are in the order 14.62%; 15.74%; and 13:35%. Based on the results of LC-MS analysis, the amount and the dominant amino acids content in the protein of P1, P2, and P3 are 13 amino acids–aspartic acid; 13 aminoacids–glutamic acid; and 14 amino acids and is predominantly asparagine. Keywords: protein, amino acid, patin, probiotic, Azolla pinnata
Application of Ionic Liquids ss Reaction Media for The Xylanase Reaction Ika Oktavianawati
Jurnal ILMU DASAR Vol 12 No 2 (2011)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

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Abstract

The potential for performing Thermomyces lanuginosus xylanase-catalyzed reactions on birchwood xylan dissolved in a range of ionic liquids has been investigated. As apparent from the results, some of the selected hydrophobic ionic liquids performed as better facilitators of the hydrolysis reactions than the hydrophilic ones. Thus, the xylanase reaction profiles in these hydrophobic ionic liquids, including [Py1,4]tfsa, [C4MIm]PF6, [P6,6,6,14]BF4, [P6,6,6,14]dca, [P6,6,6,14]bisphosphinate, and [C1MIm]MeSO4, were investigated in greater detail and the conditions for optimum temperature, optimum pH, and kinetic parameters documented. [P6,6,6,14]bisphosphinate was found to be the best ionic liquid producing the highest xylanase activity (84.98 unit/mg protein) at high temperature and pH, namely at 85°C and pH 9.0, respectively, among all of the ionic liquids tested. In addition, this ionic liquid increases the specificity of the xylanase toward xylan, indicated by lower KM (6.42 mg/mL), though it does not observed well on its enzyme’s enhancement rate. Therefore, this study indicates that the application of this ionic liquid for the hydrolysis of real lignocellulosic samples, such as wood pulp, is warranted. Further investigations, outside the scope of this research will be required to validate these observations.
The effect of fish hydrolysate addition to the standard feed and its storage duration to the total content of nitrogen in the excreta of laying chicken Achmad Sjaifullah; Nanda Letitia Ivana; I Nyoman Adi Winata; Ika Oktavianawati
Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) Vol 29, No 3 (2019): Desember
Publisher : Faculty of Animal Science, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jiip.2019.029.03.01

Abstract

The aim of this study is to determine the effect of the addition of fish hydrolyzate with variuos concentration to the standard feed and feed storage duration towards the decrease of odor by observing total nitrogen content in the excreta of laying chicken. 108 laying chicken aged forty-six weeks were divided into 12 (twelve) treatment combination. Each treatment consists of 9 (nine) laying chickens. All the laying chickens were kept in a battery cage and were fed with commercial standard feed which was added with fish hydrolysate in three different concentrations (0; 1; and 2%) during the 5-day feeding treatment period. Each standard feed which was added with different concentrations of fish hydrolysate were stored for a number of different day variations (0; 5; 10; and 15 days) before being fed to the laying chickens . The variables analyzed were water content and total nitrogen content in the excreta. Results showed that the total nitrogen content in the excreta was not affected (sig> 0.05) by the duration of feed storage but was significantly affected (sig <0.05) by the addition of fish hydrolyzate with different concentration. The use of fish hydrolyzate in 1-2%  concentration reduce the levels of water content and total nitrogen content of laying chicken excreta.
PENGOLAHAN IKAN PATIN MENJADI PRODUK MAKANAN PATIN PRESTO, BAKSO DAN NUGGET DI SEMBORO-JEMBER Ika Oktavianawati; Niken Widya Palupi
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol. 2 No. 2 (2017)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v2n2.p40-44

Abstract

Kegiatan pengabdian pada masyarakat dengan skim program Ipteks bagi Masyarakat (IbM) Kelompok Petani Ikan di Desa Semboro, Kecamatan Semboro, Kabupaten Jember telah dilaksanakan. Kegiatan ini didasarkan pada eksplorasi komoditas lokal ikan patin untuk produk olahan dengan gizi tinggi dan praktisnya penanganan. Produk olahan yang dihasilkan dalam kegiatan ini diantaranya berupa patin presto, nugget dan bakso. Antusias anggota kelompok petani ikan terhadap kegiatan ini sangat positif. Namun terdapat salah satu kendala yang dihadapi kelompok petani ikan saat ini adalah kekurangtersediaan bahan ikan patin akibat kejenuhan petani dalam membudidayakan ikan patin dan juga faktor pasar. Munculnya alternatif produk olahan ikan patin ini diharapkan mampu menggugah minat masyarakat untuk melakukan pengembangan budidaya ikan patin kembali di daerah ini. Produk olahan ini juga diharapkan mampu menghilangkan kejenuhan konsumen akan produk ikan yang umumnya hanya digoreng, disup ataupun dibakar saja. Adanya produk olahan ikan patin yang praktis dan lezat untuk dinikmati akan menjadi keunggulan tersendiri dari produk ini. Diharapkan munculnya produk olahan ikan patin ini akan mampu meningkatkan nilai tambah komoditi ikan patin di wilayah Jember. Secara ekonomi, diharapkan pula taraf hidup para kelompok petani ikan di desa Semboro ini dapat meningkat.
Essential Oil Composition of Rose Flowers from Karangpring Village Jember District Extracted by Distillation and Enfleurage Oktavianawati, Ika; Letisya, Nanda; Citra, Priscillia; Utari, Dwi Purwita; Winata, I Nyoman Adi; Handayani, Wuryanti; Nugraha, Ari Satya
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (346.523 KB) | DOI: 10.19184/jid.v20i2.8995

Abstract

Karangpring is one tourist destination villages in Jember district which is popular with beautiful large rose field areas. Therefore, this area grows to be a leading producer of rose flowers in Jember district. However, the bulky presence of these flowers made its price becomes lower in regular days. Local community only uses and sells these fresh flowers as the flower for funeral. The rose flower has a great potency to be explored as a source of rose essential oil production. To date, there is no previous research on studying rose flowers from Karangpring village for its potency on the essential oil production. In this research, rose flowers were subjected to be extracted of its essential oil using two extraction methods, distillation, and enfleurage. Hydrodistillation resulted two phases of distillates, above part formed a cloudy white phase as a normal essential oil extracted from plants, and the lower phase was an aqueous phase containing rose hydrosols. Both phases of these condensates were analyzed using GCMS. Data explained that above phase, with a yield oil of 0.07%, only contains long-chain hydrocarbons such as n-nonadecane, n-heptadecane, 9-nonadecene, and eicosane, while the lower phase only contains 2-phenylethyl alcohol. On the other hand, enfleurage of fresh rose flowers resulted in 0.06% oil yield. GCMS analysis of this oil shows that 2-phenylethyl alcohol, eugenol, and phenylacetic acid are three major compounds which take more than 85% of total rose absolute. The results show that enfleurage is a better method for extracting rose oil in better quality than using the distillation method, in term of the variety of volatile components. Meanwhile, hydrodistillation is still benefiting from producing rose water that is qualified as an industrial additive agent for food and cosmetic productions or even a new potent of agromedicine products. Keywords: rose, rose oil, rose water, rose absolute, distillation, enfleurage.
Pengaruh Fermentasi Oleh Effective Microorganis-4 (EM-4) Terhadap Kadar Kurkumin Ekstrak Rimpang Temulawak (Curcuma xanthorrhiza Roxb.) Karolina, Anita; Winata, I Nyoman Adi; Oktavianawati, Ika
BERKALA SAINSTEK Vol 6 No 2 (2018)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v6i2.9229

Abstract

Curcuma xanthorrhiza Roxb. merupakan tanaman asli Indonesia yang lebih dikenal sebagai temulawak. Rimpang temulawak merupakan salah satu bahan untuk pembuatan jamu ternak. Jamu ternak berfungsi untuk meningkatkan produktivitas ternak. Pembuatan jamu ternak relatif murah dan mudah, yaitu dengan mencampurkan rimpang temulawak yang telah dihaluskan dengan cairan EM4. Campuran tersebut difermentasi selama 7 hari pada wadah tertutup. Kandungan kimia utama dalam rimpang temulawak adalah kurkumin. Penelitian untuk mengetahui pengaruh fermentasi oleh EM4 (dengan variasi volume 10, 20 dan 30 ml) terhadap kadar kurkumin yang diperoleh dari ekstrak rimpang temulawak yang dianalisa dengan menggunakan metode KLT-Densitometri, menunjukkan semakin banyak EM4 yang ditambahkan, semakin besar kadar kurkumin yang diperoleh. Namun, pada penambahan EM4 sebanyak 10 dan 20 ml kadar kurkumin yang diperoleh lebih sedikit dibanding kontrol (tanpa penambahan EM4). Hal tersebut didukung dengan adanya dua spot baru selain spot pada larutan standar dengan intensitas yang besar. Sedangkan pada penambahan EM4 30 ml memiliki kadar kurkumin paling besar. Kata Kunci: Fermentasi, Jamu ternak, KLT-Densitometri, Kurkumin, Rimpang temulawak.
Penentuan Kadar Lipid dan Nitrogen Total dari Biji Kopi Robusta Petik Merah dan Petik Merah Hitam Hasil Olah Basah dan Olah Kering Adi Winata, I Nyoman; Oktavianawati, Ika; Sholihah, Sovia MW; Zhentya, Bella J
BERKALA SAINSTEK Vol 8 No 1 (2020)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v8i1.14068

Abstract

Penelitian ini mempelajari hubungan antara tingkat kematangan dan proses pengolahan buah kopi terhadap kadar lipid dan Nitrogen Total dalam buah kopi Robusta dari daerah lereng pegunungan Argopuro Jember. Tingkat kematangan buah kopi dibagi menjadi dua, yaitu buah kopi petik merah dan buah kopi petik merah hitam. Sementara pengolahan buah kopinya melalui proses basah dan proses kering. Hasil yang diperoleh menunjukkan bahwa buah kopi petik merah olah basah (MOB), buah kopi petik merah olah kering (MOK), buah kopi petik merah hitam olah basah (HOB), dan buah kopi petik merah hitam olah kering (HOK) memiliki kadar lipid berturut-turut adalah 12,775: 11,751; 11,603; dan 13,483 % b/b. Sementara kadar Nitrogen Totalnya berturut-turut adalah 2,169; 2,019; 2,103; dan 1,888 % b/b. Buah kopi yang diolah cara basah memiliki kadar Nitrogen total lebih tinggi dari buah kopi yang diolah cara kering. Bila kadar Nitrogen total dikaitkan dengan tingkat kematangan buah kopi, MOB memiliki kadar Nitrogen total tertinggi dan kadar terendah pada HOK. Bila tingkat kematangan dan cara pengolahan buah kopi dikaitkan dengan kadar lipid akan terlihat pola yang kurang teratur. HOK memiliki kadar lipid paling tinggi dan HOB paling rendah.
EKSTRAKSI LIKOPEN DARI BUAH TOMAT (LYCOPERSICUM ESCULENTUM MILL.) DENGAN BERBAGAI KOMPOSISI PELARUT Arifulloh, Arifulloh; Oktavianawati, Ika; Adi Winata, I Nyoman
BERKALA SAINSTEK Vol 4 No 1 (2016)
Publisher : Universitas Jember

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Abstract

Likopen merupakan pigmen jingga hingga merah pada buah dan sayur. Buah tomat merupakan sumber utama likopen.Likopen merupakan salah satu antioksidan yang paling penting diantara senyawa karotenoid lainnya. Penenelitian inibertujuan untuk melakukan optimasi pelarut campuran ekstraksi pada ekstraksi likopen dari buah tomat. Ekstraksi likopenmenggunakan metode maserasi dengan beberapa komposisi pelarut campuran, yaitu n-heksana:aseton:metanol (1:2:1; 1:1:1;2:1:1) dan petroleum eter:aseton (3:1). Ekstrak yang dihasilkan dievaporasi menggunakan rotary evaporator untukmemperoleh ekstrak kasar likopen. Ekstrak kasar likopen tersebut kemudian dipisahkan dengan kromatografi kolomgravitasi dan di analisis menggunakan spektofotometer visibel. Hasil penelitian menunjukkan bahwa pelarut campuran n-heksana:aceton:methanol dengan komposisi 1:2:1 mampu mengekstrak likopen paling optimum diantara pelarut campuranlainnya.
PENGARUH VARIASI KONSENTRASI DAN pH ASAM LARUTAN SODIUM DODESIL SULFAT TERHADAP PROSES PEMISAHANNYA PADA MEMBRAN SELULOSA ASETAT Farida, Elis Nur; Indarti, Dwi; Oktavianawati, Ika
BERKALA SAINSTEK Vol 2 No 1 (2014)
Publisher : Universitas Jember

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Abstract

Penelitian ini telah dilakukan dengan mempelajari pengaruh konsentrasi dan pH larutan asam surfaktan anionik natrium lauril sulfat terhadap pemisahanya pada membran ultrafiltrasi terhadap: kinerja membran selulosa asetat (fluks NaLS dan rejeksi NaLS). Preparasi membran selulosa asetat dilakukan dengan metode inversi fasa. Konsentrasi NaLS yang digunakan di bawah KKM (0,001-0,003M) dan pH asam(3-6). Hasil pengukuran KKM pada pH 3, 4, 5, 6 adalah sebagai berikut: 0,00398 M; 0,00469 M; 0,00571 M; 0,00669 M. Hasil uji kinerja membran tertinggi fluks, koefisien rejeksi dan massa teradsorb berturut-turut adalah sebagai berikut: NaLS 0,001 M pH 3 0,855 (L/m2jam); 0,003 M pH 6 99,646 %: 0,0408 g. Kata kunci: natrium lauril sulfat, konsentrasi kritis misel, selulosa asetat
Co-Authors . Ifada AA Sudharmawan, AA Achmad Sjaifullah Ade Danova Adi Winata, I Nyoman Anita Karolina, Anita Apriliasari, Yekti Arifulloh, Arifulloh Ayik Rosita Puspaningtyas1 Bambang Piluharto Bambang Sugiharto Bambang Sugiharto Citra, Priscillia Djenal . Djenal Djenal Dwi Indarti Elis Nur Farida, Elis Nur Fauziah, Dina Trianggaluh Hermawati, Elvira I Nyoman Adi Winata Joni Murti Mulyo Aji Kedang, Yohana Ivana Letisya, Nanda Meirinda Hermiastuti Meirinda Hermiastuti, Meirinda Muhammad Reza Nanda Letitia Ivana Nia Kristiningrum Niken Widya Palupi Novita Rahmawati Novita Rahmawati, Novita Nugraha, Ari Satya Ratih, RD Ridho, Atok Ainur Sattya Arimurti Sholihah, Sovia MW Suharjono Suharjono Tanti Haryati Tea, Marselina Theresia Djue Tri Agus Siswoyo Tri Mulyono Triodora Hutahuruk Untung Murdiyanto Untung Murdiyanto Untung Murdiyanto Utari, Dwi Purwita Wahyu Novandari Herdiyanti Wawan Badrianto Wawan Badrianto, Wawan Wulandari, Ulfa Wuriyanti Handayani Wuriyanti Handayani, Wuriyanti Wuryanti Handayani Yulvia, Ana Yuni Retnaningtyas Yusro, Fatimah Zhentya, Bella J