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All Journal Jurnal Kimia (Journal of Chemistry) Ecotrophic, Journal of Environmental Science Jurnal Media Sains Jurnal Ilmu Pendidikan Indonesia

A. A. Bawa Putra

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Author-ID : 241524

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Immunology & microbiology Mathematics Medicine & Pharmacology Physics

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EFEKTIFITAS PENGOLAHAN AIR EFFLUENT MENJADI AIR REKLAMASI DI INSTALASI PENGOLAHAN AIR LIMBAH SUWUNG DENPASAR DITINJAU DARI KANDUNGAN KEKERUHAN, TOTAL ZAT TERLARUT (TDS), DAN TOTAL ZAT TERSUSPENSI (TSS) Luh Putu Widya Kalfika Devi; K. G. Dharma Putra; A. A. Bawa Putra
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 1 Januari 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

The application of water reclamation system has been researched for the concentrations of Total Suspended Solid (TSS), Total Dissolved Solid (TDS), and turbidity in the effluent of waste water treatment in Suwung Denpasar. The aims of the research are to determine the effect of each stage of water reclamation, to determine the effectiveness water reclamation system and to know the quality reclaimed water. The results showed that each stage of water reclamation system can decrease the concentrations of TSS, TDS, and turbidity from effluent. The percentage of reduction of TSS, TDS, and turbidity in biological filtration system were 85.60 %, 63.75 %, and 62.78 % respectively. The pre-ozonation system were 63.82 %, 64.93 %, and 73.78 % respectively and the coagulation and membrane systems were 60.58 %, 92.48 %, dan 74.58 % respectively. The overall rate of effectivenes of waste water reclamation system was 97.94% for TSS, 99.04% for TDS and 97.52% for turbidity.

IDENTIFIKASI SENYAWA ANTIRADIKAL BEBAS PADA RUMPUT LAUT Sargassum ringgoldianum I M. Dira Swantara; A. A. Bawa Putra; I P. Surya Udayana
Jurnal Kimia (Journal of Chemistry) Vol. 6, No. 1 Januari 2012
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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The identification of antiradical compounds from Sargassum ringgoldianum seaweed has been conducted. Its metabolite extraction was carried out by maceration using ethanol and acetit acid mixture with ratio 9:1. It produced 7,02 gram crude extract from 230 grams of sample pollen. This crude extract has free-radical reduction activity of 66,50% at the fifth minute and 78,77% at the sixtieth minute. Separation and purification were carried out by partition, thin layer chromatography, and column chromatography. Partition was accomplished using petroleum ether, chloroform, ethyl acetate, and also water. Petroleum ether ectract had the highest free-radical reduction percentage, of 76,21%, which was obtained on the fifth minute, and 91,16% on the sixtieth minute. The petroleum ether extract was further separated with column chromatography, using stationary phase of silica gel 60 and mobile phase of a mixture of petroleum ether : acetone (7:3) and produced five fractions (FA, FB, FC, FD, dan FE). The most active fraction with antiradical activity was fraction B with percentage of free-radical reduction of 62,77% on the fifth minute and 92,19% on the sixtieth minute. This activity equals 93,06% of the antiradical activity of vitamin E. Fraction B was identified to consist of six compounds : ethyl myristate; dibutyl phthalate; ethyl palmitate; methyl isostearate; dioctyl phthalate; and 3?-bromo cholest-5-ene.

IMOBILISASI DIFENILKARBAZIDA PADA SILIKA GEL DARI ABU SEKAM PADI MELALUI TEKNIK SOL GEL Lestina Sari; I Wayan Sudiarta; Anak Agung Bawa Putra
Jurnal Kimia (Journal of Chemistry) Vol. 9, No. 2 Juli 2015
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

The research was conducted to observe diphenylcarbazide immobilization on silica gel from rice husk ash (Si-CPTMS-DPZida) with sol-gel technique. The aim of this research was to modify silica gel from rice husk ash by immobilization with diphenylcarbazide using sol-gel technique. This research included the modification and characterization of silica gel. The characterizations of silica gel were done by using infrared spectrophotometer (FTIR) and X-ray diffraction (X-RD). The results showed that the immobilized diphenylcarbazide silica has been formmed which is indicated by the appearance of Si-OH functional group in the peak at wave number 914,26 cm-1, Si-O-Si at 1091,71 cm-1, the stretching vibration of NH group at 3645 cm-1 and proved in 1492 cm-1 which is the bending vibrations of the NH group, CH (aromatic) at 802.39 cm-1, vibrational bending C = C (aromatic) at 1612 cm-1, vibration CN group at 1310 cm-1, and the vibrations of the C = O group in the area of 1685 cm-1. The X-RD data showed that the structure of Si-CPTMS-DPZida is amorphous.

EKSTRAKSI ZAT WARNA ALAM DARI BONGGOL TANAMAN PISANG (Musa paradiasciaca L.) DENGAN METODE MASERASI, REFLUKS, DAN SOKLETASI Anak Agung Bawa Putra; Ni Wayan Bogoriani; Ni Putu Diantariani; Ni Luh Utari Sumadewi
Jurnal Kimia (Journal of Chemistry) Vol. 8, No. 1 Januari 2014
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

We have conducted research on natural dyes extraction of banana (Musa paradiasiaca L.) weevil. The rendement concentration, its color, and their functional groups were determined using phytochemical test and ultraviolet-visible spectrophotometer. Extraction of natural dyes in the study was conducted by three methods namely maceration, reflux, and soxletation by using four kinds of extracting solvent including water, ethanol, acetone, and n-hexane. Color extract in water was dark brown, in ethanol and acetone was light brown, and in n-hexane was yellow. Each extract obtained by the three methods of each solvent was concentrated, their rendement were determined. The yields obtained by the maceration method using water was 8.12%, ethanol 2.40%, acetone 0.52%, and n-hexane 1.16%. The yields of the reflux method were 8.68%, 1.84%, 1.44%, and 1.04% respectively. The yields of the soxletation method were 4.80%, 1.12%, 0.44%, 0.56% respectively. The phytochemical test showed that the banana weevil dyes contained tannins and flavonoids. Absorption of the wavelength of energy ultra violet – visible detected at a wavelength between 200 nm up to 400 nm.

PEMANFAATAN ARANG BATANG PISANG (Musa paradisiacal) UNTUK MENURUNKAN KESADAHAN AIR Ni Made Shinta Megawati; Anak Agung Bawa Putra; James Sibarani
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

The study about utilization of char made from banana (Musa paradisiacal) to reduce water hardness had been carried out. In this study, the surface area, equilibrium time of adsorption of metal ions, adsorption isotherm, capacity of adsorption, and the effect of pH on metal ions adsorption were used as parameters. Futher the optimum conditions were used to reduce the water hardness. The results of this study showed that the surface area, capacity of adsorption on Ca from 100 ppm solution were 3.3932 m2/g and 2.8112 mg/g respectively with equilibrium time of 90 minutes. Whereas, the capacity of adsorption on Mg2+from 75 ppm solution was 2.3371 mg/g with equilibrium time of 90 minutes. The adsorption capacity increased to the highest value at pH 7 which were 4.1197 mg/g and 3.0210 mg/g for Ca2+and Mg2+ respectively. The value of total hardness of water samples decreased by 63.057 mg/L in 4 hours contact time.

ANALISIS BILANGAN PEROKSIDA MINYAK SAWIT HASIL GORENGAN TEMPE PADA BERBAGAI WAKTU PEMANASAN DENGAN TITRASI IODOMETRI Dwi Anggraeni Putri Suandi; Ni Made Suaniti; Anak Agung Bawa Putra
Jurnal Kimia (Journal of Chemistry) Vol. 11. No. 1 Januari 2017
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Minyak sawit merupakan salah satu jenis minyak yang biasanya dimanfaatkan untuk menggoreng berbagai hidangan. Mutu atau kualitas minyak goreng dapat mempengaruhi gizi pangan hasil gorengan yang selanjutnya minyak sisa gorengan dapat ditentukan nilai bilangan peroksida akibat adanya proses oksidasi. Penelitian ini bertujuan untuk menganalisis bilangan peroksida pada minyak goreng sawit yang telah digunakan untuk menggoreng tempe yang terkontaminasi logam berat Pb pada berbagai waktu pemanasan secara Iodometri. Hasil penelitian menunjukkan bahwa terjadi peningkatan bilangan peroksida minyak yang terkontaminasi Pb seiring bertambah lamanya waktu pemanasan minyak, yaitu berkisar antara 0,8715 meq/kg sampai 4,0852 meq/kg. Hasil tersebut mengindikasikan bahwa semakin banyak bilangan peroksida pada minyak maka semakin jelek kualitas minyak dan pangan yang digoreng. Adanya peningkatan bilangan peroksida pada penelitian ini tidak hanya disebabkan oleh adanya oksigen tetapi juga logam berat Pb yang terkandung dalam tempe yang digoreng.

KADAR LOGAM SENG PLASMA DAN ALKOHOL DEHIDROGENASE PADA TIKUS YANG DIBERI ETANOL Elfrida Magdalena Manurung; Ida Bagus Putra Manuaba; Anak Agung Bawa Putra
Jurnal Kimia (Journal of Chemistry) Vol. 11. No. 1 Januari 2017
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 mengetahui kadar logam seng plasma alkohol dehidrogenase pada tikus yang diberi etanol 40 % dengan volume 2 mL dan 3 mL. Rancangan penelitian ini menggunakan Randomized Posttest Only Control Group Desain dengan dua kelompok perlakuan dan satu kelompok kontrol. Rata-rata kadar logam seng plasma pada tikus kontrol (K) dan tikus yang diberi etanol 40 % dengan volume 2 mL (P1) dan 3 mL (P2) adalah 445,83 ± 27,76 mg/L; 928,38 ± 183,13 mg/L; dan 1228,75 ± 80,00 mg/L. Hasil perhitungan rata-rata aktivitas alkohol dehidrogenase plasma pada tikus kontrol dan tikus yang diberi etanol 40 % dengan volume 2 mL dan 3 mL adalah 21,00 ± 0,34 ng/mL; 18,69 ± 0,31 ng/mL dan 17,05 ± 0,33 ng/mL. Hasil ANOVA menunjukkan p < 0,05 sehingga terdapat perbedaan bermakna kadar logam seng plasma dan aktivitas alkohol dehidrogenase pada tikus kontrol dan tikus yang diberi etanol 40 % dengan volume 2 mL dan 3 mL. Hasil analisis Tukey/HSD untuk kadar rata-rata logam seng plasma tikus kontrol dan tikus yang diberi etanol 40 % dengan volume 2 mL dan 3 mL memiliki perbedaan signifikan, yaitu terjadinya peningkatan kadar logam seng plasma dan pada aktivitas alkohol dehidrogenase dengan terjadi penurunan pada kelompok tikus yang diberi etanol 40 % dengan volume 2 mL dan 3 mL terhadap tikus kontrol.

Co-Authors Devi Wisudawan Dwi Anggraeni Putri Suandi Elfrida Magdalena Manurung Hayati, Ismi I G. P. Sukmajaya A. P. T. I Gusti Agung Gede Bawa I K. G. Antara I Kadek Sutomo Putra I Made Dira Swantara I Made Siaka I Made Sutha Negara I P. Surya Udayana I W BUDIARSA SUYASA I Wayan Suarsa I Wayan Sudiarta Ida Ayu Ary Pramaswari Ida Bagus Putra Manuaba Ida Ratu Laila Imam Rasidi James Sibarani Ketut Gede Dharma Putra Komang Ari Gunapria Darmapatni Lestina Sari Luh Putu Widya Kalfika Devi Mahayani, Putu Ayu Erna N. W. Bogoriani Ni Komang Ariati Ni Luh Utari Sumadewi Ni Made Puspawati Ni Made Shinta Megawati Ni Made Suaniti Ni Putu Diantariani P. Suarya Putu Desitha Pratiti Kameswari Wisnawa

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