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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Jurnal Kimia (Journal of Chemistry) Buletin Udayana Mengabdi Itepa : Jurnal Ilmu dan Teknologi Pangan Jurnal Veteriner Ecotrophic, Journal of Environmental Science Jurnal Media Sains

Ni G. A. M. Dwi Adhi Suastuti

Program Studi Kimia FMIPA Universitas Udayana, Bukit Jimbaran, Bali-Indonesia

Author-ID : 219089

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Electrical & Electronics Engineering Environmental Science Immunology & microbiology Medicine & Pharmacology Veterinary

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KADAR AIR DAN BILANGAN ASAM DARI MINYAK KELAPA YANG DIBUAT DENGAN CARA TRADISIONAL DAN FERMENTASI N. G. A. M. Dwi Adhi Suastuti
Jurnal Kimia (Journal of Chemistry) Vol. 3, No. 2 Juli 2009
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (94.22 KB)

The water contents and acid numbers of coconut oils made by thad way and by fermentation werecompared. The water contents were determined using oven method while the acid numbers was cletermined bytitration. Both parameters were compared on oils exposed to open air for 0, 1, 2, 3, and 4 weeks.Result showed that water contents and acid value of coconut oils produced by fermentation process werehigher than coconut oils made by traditional ways. Water content of coconut oil made by traditional way and byfermentation were elevated during exposure. The highest water content of both coconut oils made by traditional wayand fermentation process after 4 weeks exposure were 0,03 % and 0,06 % respectively, while the highest acidnumbers of both coconut oils products after 4 weeks exposure were 0,75 and 0,89 mg KOH/g respectively

PENGOLAHAN LARUTAN DETERJEN DENGAN BIOFILTER TANAMAN KANGKUNGAN (IPOMOEA CRASSICAULIS) DALAM SISTEM BATCH (CURAH) TERAERASI Ni G. A. M Dwi Adhi Suastuti; I Wayan Suarsa; Dwi Kurnia Putra R
Jurnal Kimia (Journal of Chemistry) Vol. 9, no. 1 Januari 2015
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

This study was aimed to determine the ability of kangkungan plant (Ipomoea crassicaulis) as a biofilter in the treatment process of detergent solution with the use of an aerated batch system (bulk). The processing units were conditioned in a Styrofoam container equipped with an aeration system. A total of 24 L detergent solution and 5 kangkungan plants were applied in the units. As a comparison, a control unit containing the same solution without the addition of kangkungan plants was also carried out. Investigations of the ability of kangkungan in reducing the content of the pollutants which were measured as COD value, surfactant and phosphate levels were run within 30 days of observations. After 30 days it was found that there was a decrease in surfactant and phosphate levels, which were 97.76%; and 90.77%, respectively while the control showed a decrease of 50.79% and 51.53%, respectively

EKSTRAKSI DAN KARAKTERISASI HIDROKSIAPATIT DARI LIMBAH KERAJINAN TULANG SAPI MENGGUNAKAN METODE KOMBINASI ALKALI HIDROTERMAL DENGAN DEKOMPOSISI TERMAL I Gede Andy Andika Parahita; I Nengah Simpen; Ni Gusti Ayu Made Dwi Adhi Suastuti
Jurnal Kimia (Journal of Chemistry) Vol. 10, No. 2 Juli 2016
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Penelitian ini bertujuan untuk mengekstraksi hidroksiapatit dari limbah kerajinan tulang dan mengkarakterisasinya. Metode yang digunakan adalah metode kombinasi alkali hidrotermal dengan dekomposisi termal, yang dilakukan dengan cara menginteraksikan serbuk tulang dengan NaOH 5% dan dikalsinasi pada suhu 400, 750, 950 dan 1100oC (TB1, TB2, TB3 dan TB4). Nilai yield hidroksiapatit rata-rata yang dihasilkan adalah 68,82%. Karakterisasi kebasaan permukaan tertinggi dimiliki TB1 adalah 2,8345 ± 1,5166 x 10-2 mmol/gram. Karakterisasi FTIR menghasilkan gugus fungsi yang sesuai dengan senyawa hidroksiapatit. Luas permukaan tertinggi dimiliki TB1 adalah 34,4811 m2/gram. Perbandingan Ca/P rata-rata yang didapatkan adalah 1,6838. Karakterisasi XRD menunjukkan penambahan suhu mengakibatkan puncak difraksi yang dihasilkan semakin tajam yang menunjukkan struktur kristal yang dihasilkan semakin tajam.

RIZODEGRADASI UNTUK MINIMALISASI BOD, COD, KANDUNGAN DERTERGEN DAN LEMAK LIMBAH CAIR RUMAH MAKAN N. G. A. M. D. A. Suastuti; I. E. Suprihatin; W. D. Sulihingtyas; A. A .I .A. M. Laksmiwati
Jurnal Kimia (Journal of Chemistry) Vol.12 No.2 Juli 2018
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Penelitian ini bertujuan untuk mengetahui efektivitas dan kapasitas pengolahan limbah cair rumah makan dengan sistem rizodegradasi lahan basah yang menggunakan tanaman kangkungan (Ipomoea crassicaulis). Sistem ini dibuat dengan menanam stek tanaman kangkungan dalam bak ekosistem lahan basah. Air limbah ditentukan COD, BOD, konsentrasi lemak dan detergennya sebelum dan setelah pengolahan. Sebelum pengolahan, terlebih dahulu ditentukan pH kerja optimumnya. Limbah cair rumah makan diatur pH nya kemudian dialirkan ke dalam bak ekosistem lahan basah. Pengolahan air limbah dilakukan selama 6, 12, 18 dan 24 jam, dan pada setiap jangka waktu diambil sampel untuk diukur BOD, COD, konsentrasi detergen dan lemaknya. Hasil penelitian menunjukkan pH optimum dicapai pada range 6 – 8. Nilai BOD, COD, konsentrasi lemak dan detergen dalam limbah sebelum diolah berturut-turut 246; 573,34; 128,0, dan 7,38 ppm, dengan pH 4,43. Selama pengolahan terjadi penurunan konsentrasi polutan, dengan penurunan terbesar terjadi pada waktu pengolahan 24 jam, yaitu sebesar 44,95; 72,8; 36,5 dan 3,49 ppm untuk BOD, COD, konsentrasi lemak dan detergen. Efektivitas ekosistem lahan basah untuk menurunkan COD, BOD, lemak dan detergen berturut-turut sebesar 79,59%, 74,75%, 46,22% dan 35,39%. Kapasitas pengolahan ekosistem lahan basah untuk penurunan COD, BOD, lemak dan detergen berturut-turut sebesar 2,359; 1,108; 0,263 dan 0,016 ppm/L jam

KANDUNGAN LOGAM Cu TOTAL DALAM AIR LAUT DAN SEDIMEN SERTA BIOAVAILABELNYA DALAM SEDIMEN DI PANTAI BALANGAN KABUPATEN BADUNG BALI I G. A. K. S. Dewi; N. G. A. M. D. A. Suastuti; M. Krisensia
Jurnal Kimia (Journal of Chemistry) Vol. 15, No.1, Januari 2021
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JCHEM.2021.v15.i01.p06

Pantai Balangan di Kabupaten Badung Bali adalah tujuan wisata yang sangat populer yang terletak di selatan Bali dekat Pura Uluwatu. Karena banyak sekali aktivitas wisata yang menimbulkan polusi. Tujuan penelitian untuk mengetahui konsentrasi logam Cu total dalam air dan sedimen serta untuk mengetahui bioavailabilitas Cu dalam sedimen. Untuk mengetahui bioavailabilitas Cu dalam sedimen, sedimen diekstraksi dengan metode ekstraksi sekuensial, kemudian filtrat dianalisis menggunakan Spektrofotometri Serapan Atom (SSA) merk Shimadzu AA-7000 dengan teknik kurva kalibrasi. Kandungan logam Cu yang diperoleh dalam air dan sedimen masing-masing adalah (0,0247-0,048) mg / L dan (3,2742-6,1334) mg / kg. Hasil fraksinasi Cu dalam sedimen adalah sebagai berikut: Fraksi EFLE (mudah, bebas, leachable dan dapat ditukar) sebesar 0,130 mg / kg - 0,787 mg / kg, fraksi Fe / Mn oksida 0,165 mg / kg - 0,819 mg / kg; organik / sulfida 0,456 mg / kg - 1,641 mg / kg dan fraksi resistansi 1,008 mg / kg - 3,478 mg / kg. Oleh karena itu, fraksi ketersediaan hayati dalam sedimen untuk Cu adalah 22,92% - 52,93%, dan fraksi resistansi adalah 47,06% - 77,06%, hal ini berarti bahwa terdapat sedikit Cu yang tersedia untuk organisme dibandingkan dengan resisten. Kata kunci: air laut, bioavailabilitas, Cu, Pantai Balangan, sedimen Balangan Beach located in Badung Regency of Bali is a very popular tourist destination in the south of Bali near Uluwatu Temple. There is a lot of tourism activities which can cause pollution. The aim of the study was to determine the concentration of total Cu metals in water and sediments as well as the bioavailability of Cu in the sediments. In order to determine the bioavailability of Cu in the sediments, the sediment was extracted by the sequential extraction method, then the filtrate was analyzed by using the Atomic Absorption Spectrophotometry (AAS) brand Shimadzu AA-7000 with a calibration curve technique. The metal content of Cu obtained in water and sediments was in the range of 0.0247-0.048 mg/L and 3.2742-6.1334 mg/kg, respectively. The results of Cu fractionation in sediments were as follows: EFLE fraction (easily, freely, leachable and exchangeable) was of 0.130 mg/kg – 0.787 mg/kg, Fe/Mn oxide fraction was of 0.165 mg/kg – 0.819 mg/kg; organic/sulfide was of 0.456 mg/kg – 1.641 mg/kg and the resistance fraction was of 1.008 mg/kg – 3.478 mg/kg. Therefore, the bioavailable fraction in the sediment for Cu was in the range of 22.92% - 52.93%, and the resistanct fraction was in the range of 47.06% - 77.06%. Keywords: Balangan Beach, bioavailability, Cu, sea water, sediments

KANDUNGAN LOGAM TOTAL Fe DAN Cr AIR LAUT SERTA SPESIASI DAN BIOAVAILABILITASNYA PADA SEDIMEN DI KAWASAN PELABUHAN CELUKAN BAWANG N. G. A. M. D. A. Suastuti; I. G. A. K. S. P. Dewi; R. M. Derisa
Jurnal Kimia (Journal of Chemistry) Vol. 15, No.2, Juli 2021
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JCHEM.2021.v15.i02.p06

Pelabuhan Celukan Bawang merupakan salah satu pelabuhan yang terletak di Kabupaten Buleleng Bali dengan aktivitas transportasi kapal bongkar muat barang yang cukup padat. Penelitian ini bertujuan untuk menentukan kandungan logam total Fe dan Cr pada air laut dan sedimen serta masing-masing fraksi logam Fe dan Cr sehingga dapat ditentukan bioavailabilitasnya. Spesiasi dan bioavailabilitas pada sedimen dilakukan dengan metode ekstraksi sekuensial kemudian dianalisis menggunakan alat Atomic Absorption Spectrophotometer (AAS). Hasil penelitian dengan metode kurva kalibrasi menunjukkan bahwa kandungan logam total pada kelima lokasi dalam air laut untuk logam Fe dan Cr yaitu berkisar antara 0,3593 - 2,7026 mg/L dan 0,0294 - 0,1277 mg/L, sedangkan kandungan logam total pada sedimen untuk Fe dan Cr berkisar antara 20644,733 - 24434,875 mg/kg dan 12,2023 - 24,9072 mg/kg. Hasil spesiasi logam Fe didominasi oleh fraksi non-bioavailable yaitu 80,06 - 86,47 % sedangkan fraksi bioavailable yaitu fraksi EFLE 0,01 - 0,16 %, fraksi tereduksi asam 14,07 - 19,08 %, fraksi organik sulfida 0,67 % - 1,18 %. Logam Cr fraksi bioavailable yaitu fraksi EFLE 25,12 - 34,00 %, fraksi tereduksi asam 27,50 - 37,11 %, fraksi organik sulfida 19,54 - 28,83 % sedangkan fraksi non-bioavailable 8,70 - 26,44 %. Persentase bioavailabilitas logam Fe dan Cr masing-masing sebesar 13,53 - 19,94 % dan 73,56 - 91,30 %. Kata kunci: air laut, bioavailabilitas, Cr, Fe, sedimen, spesiasi.

DISTRIBUSI LOGAM BERAT Pb DAN Cu PADA AIR LAUT, SEDIMEN, DAN RUMPUT LAUT DI PERAIRAN PANTAI PANDAWA I Made Siaka; I Gusti Ayu Made Dwi Adhi Suastuti; I Putu Bagus Mahendra
Jurnal Kimia (Journal of Chemistry) Vol. 10, No. 2 Juli 2016
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Penelitian mengenai distribusi logam berat Pb dan Cu dalam air laut, sedimen, dan rumput laut di perairan Pantai Pandawa telah dilakukan. Penelitian ini bertujuan untuk mengetahui kandungan total logam berat Pb dan Cu serta distribusinya di perairan Pantai Pandawa. Preparasi pada sampel sedimen dan rumput laut menggunakan metode digesti dengan larutan reverse aqua regia dengan bantuan ultrasonic bath pada suhu 60oC selama 45 menit dan dipanaskan dengan hot plate pada suhu 140oC selama 45 menit. Analisis logam berat Pb dan Cu menggunakan spektrofotometri serapan atom. Hasil analisis terhadap logam berat Pb menunjukan distribusi logam berat Pb dalam air laut, sedimen, dan rumput laut dari masing-masing lokasi pengambilan sampel di perairan Pantai Pandawa berkisar antara 0,8479 sampai 1,9070 mg/L untuk air laut; 17,0833 sampai 76,25 mg/kg untuk sedimen; dan 13,2749 sampai 51,3252 mg/kg untuk rumput laut. Hasil analisis terhadap logam berat Cu menunjukan distribusi logam berat Cu dalam air laut, sedimen, dan rumput laut dari masing-masing lokasi pengambilan sampel di perairan Pantai Pandawa berkisar 0,0015 sampai 0,0054 mg/L untuk air laut; 0,6699 sampai 1,4554 mg/kg untuk sedimen; dan 0,0623 sampai 0,2233 mg/kg untuk rumput laut. penyebaran dari logam berat Pb dan Cu di perairan Pantai Pandawa menujukan kandungan logam berat Pb dan Cu lebih banyak berada pada sedimen dari pada air laut dan rumput laut. Logam berat Pb dan Cu cenderung terdistribusi lebih banyak pada lokasi yang memiliki intensitas aktivitas yang lebih banyak di perairan Pantai Pandawa.

PEMANFAATAN TEH KOMBUCHA SEBAGAI OBAT HIPERURISEMIA MELALUI PENGHAMBATAN AKTIFITAS XANTIN OKSIDASE PADA Rattus norvegicus Dewa Ayu Windu Manik Anandagiri; I. B. Putra Manuaba; Ni G. A. M. Dwi Adhi Suastuti
Jurnal Kimia (Journal of Chemistry) Vol. 8, No. 2 Juli 2014
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

The formation of high levels of uric acid and problems of its excretion from the body can lead to hyperuricemia. This study serves to examine the kombucha tea as a hyperuricemia drug activity through the inhibition of the enzyme xanthine oxidase. Kombucha tea was used with three different variations of fermentation namely: tea A (4 days), tea B (8 days), tea C (12 days), and two variations of the dose, i.e. 10 mL/kg BW and 40 mL/kg BW. This study uses a “posttest only control group” design. A total of 27 Wistar rats (Rattus norvegicus) are grouped into 9 groups, K (negative control), H (control hyperuricemia), A (control allopurinol), P1 (tea A dose of 10 mL/kg BW), P2 (tea A dose 40 mL /kg BW), P3 (tea B dose 10 mL/kg BW), P4 (tea B dose 40mL/kg BW), P5 (tea C dose 10 mL/kg BW), P6 (tea C dose 40 mL/kg BW). The rats were given high feed purine for research, namely chicken liver juice and melinjo so that they contracted the hyperuricemia condition. The high purine feeds were administered on all groups of rats except the negative control group. Experiment was undertaken to compare the effectiveness of allopurinol with kombucha tea. This experiment was done for nine days. On the last day, an analysis of the levels of uric acid and xanthine oxidase activity was undertaken and the data was analyzed using ANOVA. The conclusion was that the biggest decline in drug for the treatment of hyperuricemia was kombucha tea B with the dose of 40 mL/kg BW.

PELESTARIAN SUBAK MELALUI PEMBERDAYAAN ANGGOTANYA DALAM PEMBUATAN PAKAN TERNAK SAPI BALI ALTERNATIF KOMBINASI JERAMI PADI DAN BATANG PISANG SECARA FERMENTASI I. N. Simpen; I. M. Sutha Negara; N.G.A.M. Dwi Adhi S.; M. Arsa; N.L. Arpiwi
Buletin Udayana Mengabdi Vol 15 No 2 (2016): Jurnal Udayana Mengabdi
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (336.37 KB)

The activity in Subak Dangin Alas Desa Lodtunduh Ubud, to be aim for producing woof of bali cattlealternative by fermentation of mixture banana culm and rice straw which has been carried out from May toSeptember. The activity of subscribers of subak sustainability and continuesly, it is expected to impact onmaintenance of the subak in its village. In this activity, have been done survey, producing of cattle woofalternative, socialized, training, accompanying and giving woof to their cattles. In producing of woof of balicattle, it was done by cutting byproduct of banana culm and rice straw to be size 3-5 cm, then dried 1-2 daysfor reducing water content and then the fermentor (active microorganism and molasses) and mixture of riceand bran are distributed on its byproduct. The final step, it has been done fermentation for minimum 7 days.The activity result, subscribers of subak were very anthusiastic. Generally, participants have yet tounderstand detail procedure to make cattle woof alternative which is healthful, natural and preserve byfermentation, so that the application of technology is useful. The cattles may consume its fermentationproduct.

Modifikasi Limbah Tulang Sapi Bali dan Pemanfaatannya untuk Adsorpsi Methylene Blue (MODIFICATION OF BALI COW BONE WASTE AND ITS APPLICATION TO ADSORPTION OF METHYLENE BLUE) I Nengah Simpen; Ni Gusti Ayu Made Dwi Adhi Suastuti
Jurnal Veteriner Vol 17 No 4 (2016)
Publisher : Faculty of Veterinary Medicine, Udayana University and Published in collaboration with the Indonesia Veterinarian Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.472 KB)

The research of modification, characterization, and application of nano-porous adsorbent base onBali cow bone waste to methylene blue (MB) adsorption has been carried out. The modification was carriedout through extraction of hydroxyapatite (HA) from cow bone, then its activated by 0.4 M NaOH solutionand coating to form active sites of Fe and Fe-Al oxides. The adsorbent was applied to know quantitativelyadsorption capacity coated-HA (CHA) to MB as wastewaters simulation. Compound of CHA wascharacterized amount of active sites by base-acid titration, Bronsted-Lewis acid sites by FTIR spectroscopy,specific surface area by MB method and pore size by surface area analyzer gasorption nitrogen. While,amount of coated-Fe and Al by LIBS. Amount of MB adsorbed was analyzed by UV-Vis spectrophotometer.The results showed that coating of Fe and Fe-Al oxides increased amount of active sites, sites distributionof new Lewis acid site, everage nano pore size with pore volume is microporous (less than 2 nm), and Fe andFe-Al oxides was into HA crystal structure. The amount of active sites was the higest of T1-Fe-Al2O3 andall pores diameter less than 58.182 nm.While, the specific surface area increased T3-Fe2O3>T3-Fe-Al2O3>T2-Fe2O3 respectively. In the adsorption isotherm, coating on HA significantly increased ability of adsorbentand through Freundlich model (R2 > 0.77) with the higest adsorption capacity on T3-Fe2O3 (3.2019 mg/g)then T2-Fe-Al2O3 (2.7921 mg/g). Results of this research indicate that Fe and Fe-Al oxides HA-modifiedincreased adsorption ability.

Co-Authors Amanda Awalia Ramadhani Anak Agung Istri Agung Mayun Laksmiwati Dewa Ayu Indra Dewi Dewa Ayu Windu Manik Anandagiri Dwi Kurnia Putra R G. A. Henny Kurnia Ratnasari I G. A. K. S. Dewi I G. A. M. A. S. Gitadewi I G. M. A. P. Raharja I Gede Andy Andika Parahita I Gusti Ayu Kunti Sri Panca Dewi I M. Siaka I Made Siaka I Made Sutha Negara I Nengah Simpen I Putu Bagus Mahendra I W BUDIARSA SUYASA I Wayan Suarsa I. A. Gede Widihati I. G. A. K. S. P. Dewi Ida Bagus Amertha Putra Manuaba Ida Bagus Putra Manuaba Irdhawati Irdhawati Iryanti Eka Suprihatin Kadek Ari Esta Ketut Ratnayani M A Yohanita Nirmalasari M. Arsa M. Krisensia Manuntun Manurung N. P. A. J. S. Putri Nadya Sarilla Agatha Nanik Ayumi Ni Komang Ariati Ni Komang Tria Paramita Septiari Ni LUH ARPIWI Ni Luh Eka Anggarayanti Ni Made Puspawati Ni Made Suaniti Ni Putu Ayu Krismayanti Ni Putu Ayu Susilawati Noviyanti, Ni Putu Pradnyadari, I Gusti Ayu Lia Putu Suarya R. M. Derisa Rosalia Gosal W. D. Sulihingtyas Wahyu Dwijani Sulihingtyas Wahyu Dwijani Sulihingtyas Welhelmus Djo, Yuliana Herman Yudith Rizkia Widyawati Yuliana Herman Welhelmus Djo

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