I Nyoman Adi Winata
Department of Chemistry, Faculty of Math and Natural Science, University of Jember

Published : 11 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 11 Documents
Search

Cellulose Acetate Membranes characters Due To Additions Additive Monosodium Glutamate (MSG) Indarti, Dwi; Winata, I Nyoman Adi; Novianti, Heny Yunita
Jurnal ILMU DASAR Vol 14 No 1 (2013)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (607.762 KB) | DOI: 10.19184/jid.v14i1.479

Abstract

This study purposed to determine the effect of MSG on the character of cellulose acetate membranes. This membrane preparation using phase inversion technique. The results showed that the higher the concentration of MSG, which is the character of membrane permeability coefficients and higher water flux, whereas for the character of the membrane density test and 100-200 kDa dextran rejection further down. To test the FTIR proved that there are no additives or solvents are trapped in a membrane. Keywords : Cellulose Acetate, phase inversion, MSG, FTIR  
Onoceranoid Triterpene from Langsep Leaf (Lansium domesticum Corr.) and Its Insecticide Activity to Spodoptera littura Larvae Winata, I Nyoman Adi; Sjaifullah, Achmad; Cahyani, Dita J.; Ayu, Woro D.
Jurnal ILMU DASAR Vol 18 No 1 (2017)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (256.496 KB) | DOI: 10.19184/jid.v18i1.3110

Abstract

Onoceranoide type of triterpene was isolated from leaf of langsep (Lansium domesticum Corr.) Isolation is conducted by vacuum and flash column chromatography technics with Silika Gel 60 F, Silika Gel 60 (70-230 mesh), and Sephadex LH-20 powder as stationery phase and mixture of dichloromethane, methanol, ethyl acetate as mobile phase. The structure was identified by Infrared and NMR spectroscopy. It has moderate insecticidal activity to Spodoptera littura larvae with LC50 13,6 ppm.
PENGARUH EKSTRAK KASAR TANIN DARI DAUN BELIMBING WULUH (AVERRHOA BILIMBI L.) PADA PENGOLAHAN AIR Kristianto, Aries; Winata, I Nyoman Adi; Haryati, Tanti
BERKALA SAINSTEK Vol 2, No 1 (2014)
Publisher : My Home

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian tentang pengaruh ekstrak kasar tanin dari daun belimbing wuluh (Averrhoa bilimbi L.) pada pengolahan air telah dilakukan. Ekstrak kasar tanin diperoleh dengan cara maserasi dengan metanol 50% terhadap serbuk kering daun belimbing wuluh (A. bilimbi L.). Selanjutnya ekstrak kasar tanin dikombinasikan dengan koagulan FeCl3 dan FeSO4. Pada pengolahan air parameter yang diamati adalah pH, kekeruhan, padatan terlarut dan daya hantar listrik. Penambahan ekstrak kasar tanin dengan FeCl3 pada kondisi optimum (125 mg/L tanin dan 50 mg/L FeCl3) dapat menurunkan kekeruhan, pH, padatan terlarut dan daya hantar listrik berturut-turut sebesar 72,43%, 47,24%, 86,13% dan 5,44%. Penambahan ekstrak kasar tanin dengan FeSO4 pada kondisi optimum (150 mg/L tanin dan 60 mg/L FeSO4) dapat menurunkan kekeruhan, pH berturut-turut sebesar 6,98%, 25,20%, padatan terlarut tidak dapat didefinisikan dan daya hantar listrik mengalami kenaikan sebesar 5,81%. Pada penambahan tanin tanpa kombinasi koagulan pada kondisi optimum (125 mg/L) dapat menurunkan kekeruhan sebesar 19,14%, pH mengalami kenaikan sebesar 19,33%, dan menurunkan padatan terlarut dan konduktivitas berturut-turut sebesar 69,33% dan 2,70%. Kata kunci: Averrhoa bilimbi L., koagolan, tanin.
The Influence of Supplementary Feeding (Probiotic and Azolla pinnata) on Protein and Amino Acids Content in Patin Fish Oktavianawati, Ika; Hermiastuti, Meirinda; Rahmawati, Novita; Handayani, Wuriyanti; Winata, I Nyoman Adi
UNEJ e-Proceeding Indonesian Protein Society (IPS), International Seminar and Workshop 2014
Publisher : UNEJ e-Proceeding

Show Abstract | Download Original | Original Source | Check in Google Scholar

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
Antifeedant Activity from Leaves Extract of Aglaia ganggo Miq on Spodoptera litura Purwatiningsih, Purwatiningsih; Winata, I Nyoman Adi
Jurnal ILMU DASAR Vol 14 No 1 (2013)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.851 KB) | DOI: 10.19184/jid.v14i1.475

Abstract

The different fraction extracts (viz methanol, dichlorometana, n-hexane, ethylacetate, and aceton) obtained from leaves of Aglaia ganggo Miq were investigated for antifeedant activity against Spodoptera litura. All extract fractions showed antifeedant activity with aceton fraction exhibited the highest antifeedant activity at 1 ppm concentration. Only hexane fraction showed a dose dependent concentration while the other fractions exhibited the opposite respond.Keywords : Antifeedant, Aglaia ganggo, extract, fraction
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.
PENGARUH EKSTRAK KASAR TANIN DARI DAUN BELIMBING WULUH (AVERRHOA BILIMBI L.) PADA PENGOLAHAN AIR Kristianto, Aries; Winata, I Nyoman Adi; Haryati, Tanti
BERKALA SAINSTEK Vol 2 No 1 (2014)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian tentang pengaruh ekstrak kasar tanin dari daun belimbing wuluh (Averrhoa bilimbi L.) pada pengolahan air telah dilakukan. Ekstrak kasar tanin diperoleh dengan cara maserasi dengan metanol 50% terhadap serbuk kering daun belimbing wuluh (A. bilimbi L.). Selanjutnya ekstrak kasar tanin dikombinasikan dengan koagulan FeCl3 dan FeSO4. Pada pengolahan air parameter yang diamati adalah pH, kekeruhan, padatan terlarut dan daya hantar listrik. Penambahan ekstrak kasar tanin dengan FeCl3 pada kondisi optimum (125 mg/L tanin dan 50 mg/L FeCl3) dapat menurunkan kekeruhan, pH, padatan terlarut dan daya hantar listrik berturut-turut sebesar 72,43%, 47,24%, 86,13% dan 5,44%. Penambahan ekstrak kasar tanin dengan FeSO4 pada kondisi optimum (150 mg/L tanin dan 60 mg/L FeSO4) dapat menurunkan kekeruhan, pH berturut-turut sebesar 6,98%, 25,20%, padatan terlarut tidak dapat didefinisikan dan daya hantar listrik mengalami kenaikan sebesar 5,81%. Pada penambahan tanin tanpa kombinasi koagulan pada kondisi optimum (125 mg/L) dapat menurunkan kekeruhan sebesar 19,14%, pH mengalami kenaikan sebesar 19,33%, dan menurunkan padatan terlarut dan konduktivitas berturut-turut sebesar 69,33% dan 2,70%. Kata kunci: Averrhoa bilimbi L., koagolan, tanin.
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.
The Influence of Supplementary Feeding (Probiotic and Azolla pinnata) on Protein and Amino Acids Content in Patin Fish Oktavianawati, Ika; Hermiastuti, Meirinda; Rahmawati, Novita; Handayani, Wuriyanti; Winata, I Nyoman Adi
UNEJ e-Proceeding Indonesian Protein Society (IPS), International Seminar and Workshop 2014
Publisher : UPT Penerbitan Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

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
Pelatihan Ketrampilan Menggambar Molekul dan Alat Kimia Menggunakan Chemsketch Bagi Guru-Guru Anggota MGMP Kimia Kabupaten Jember Winata, I Nyoman Adi; Sulisitiyo, Yudi Aris; Suwardiyanto, Suwardiyanto
Warta Pengabdian Vol 14 No 2 (2020): Warta Pengabdian
Publisher : LP2M Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/wrtp.v14i2.9888

Abstract

Permasalahan yang dihadapi oleh guru-guru anggota MGMP Kimia di Kabupaten Jember adalah kesulitan dalam menggambar bentuk molekul saat menyusun bahan ajar dan LKS. Selain itu, kurangnya fasilitas peralatan gelas sebagai alat peraga di laboratorium menyebabkan proses belajar mengajar menjadi tidak maksimal. Oleh karena itu, tujuan kegiatan adalah memberikan pelatihan penggunaan program Chemsketch yang dapat digunakan untuk menggambar bentuk molekul dan visualisasinya dalam bentuk 3 dimensi, serta gambar perlatan gelas beserta informasi nama dan kegunaannya. Bentuk kegiatan yang dilakukan adalah tutorial dan praktik menggambar langsung yang diikuti oleh 25 orang guru anggota MGMP Kimia yang berasal dari SMA/SMK negeri dan swasta di wilayah Jember. Pengukuran keberhasilan program dilakukan dengan memberikan evaluasi akhir untuk menggambar struktur molekul dan peralatan laboratorium yang telah ditentukan menggunakan Chemsketch. Hasil yang diperoleh menunjukkan bahwa secara umum peserta pelatihan telah berhasil menggunakan program Chemsketch dengan baik. Namun dekian, guru-guru yang berusia muda cenderung lebih cepat tanggap dan mudah beradaptasi dengan program aplikasi ini.