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NOOR HUBDRYAWATI
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Jl.Barong Tongkok no.04 Kampus Gn.kelua Samarinda Kalimantan Timur
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INDONESIA
Jurnal Kimia Mulawarman
Published by Universitas Mulawarman
ISSN : 16935616     EISSN : 24769258     DOI : DOI: https://doi.org/10.30872/jkm
Core Subject : Science,
Chemistry
Journal of Kimia Mulawarman is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry, including educational chemistry and applied chemistry.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 202 Documents
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Isolasi Dan Karakterisasi Lipase Dari Rebung Bambu Betung Dendrocalamusasper Agung Prasetyo; Winni Astuti; Chairul Saleh
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i1.585

Abstract

This research was conducted to get the extract of rough lipase produced by bamboo shoots (Dendrocalamus asper). Lipase isolation from bamboo shoots was done by blending bamboo shoots to produce the crude extract of the enzyme. Lipase crude extracts that occurred at centrifugation at 12000 rpm for 30 minutes at 4°C. The crude extracts obtained were then tested using quantitative pH 7, temperature 30ºC and substrate 1% (v/v). Based on research there is activity of crude extract of lipase equal to 2,24 U/ml.
PENGARUH PENAMBAHAN CaCO3 DAN WAKTU PENYIMPANAN TERHADAP KADAR VITAMIN C PADA PROSES PENGHAMBATAN PEMATANGAN BUAH TOMAT (Lycopersicum esculentum Mill) Rudi Kartika
JURNAL KIMIA MULAWARMAN Vol 8 No 1 (2010)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The aim of this research is to know the influence of CaCO3 addition and storage duration to vitamine C concentrate in ripe obstruction process of tomato (Lycopersicum esculentum Mill). Calcium carbonate(CaCO3) which is added 0; 0.2; 0.4; 0.6 and 0.8 percent of weight and storage duration were 0; 2; 4; 6; 8; 10 and 12 days. Vitamine C was determined by using iodometric titration method. The data obtained were then analized by ANOVA test and LSD test. The result showed that CaCO3 addition could influence vitamine C concentrate in ripe obstruction process of tomato (Lycopersicum esculentum Mill) on standard 5% and 1% with  Ftest > Ftabel (5% and 1%) or F(7.6667) > F(2.50 and 3.60) and storage duration could influence vitamine C concentrate in ripe obstruction process of tomato (Lycopersicum esculentum Mill) on standard 5% and 1% with Ftest > Ftabel (5% and 1%) or F(1204.2222) > F(2.32 and 3.07). Based on the result LSD test on significant standard 5% (0.0143) and 1% (0.0190), optimum vitamine C concentrate were 0.8589 mg/10 g on 0.2% of calcium carbonate (CaCO3) addition and 10 days of storage duration.Keywords : ANOVA, CaCO3, LSD, tomato, vitamine C, storage duration
AKTIVITAS AMILASE, PROTEASE dan LIPASE DARI MADU LEBAH Trigona sp, Apis mellifera dan Apis dorsata Hendric Surya Putra; Winni Astuti; Rudi Kartika
JURNAL KIMIA MULAWARMAN Vol 16 No 1 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v16i1.433

Abstract

Activities of amylase, protease and lipase from honey Trigona sp, Apis mellifera and Apis dorsata, determination protein concentration and the activity protease done with Bradford method, the determination of the glucose standard and activity amylase done with 3,5-dinitro salicylic acid (DNS) method and activity lipase done with acid-base titration with coconut oil substrate. The honey from Trigona sp has value of the activity amylase and lipase respectively by 0,0136 U / mg and 0,359 U/mg, whereas honey Apis mellifera has activity of protease, amylase and lipase of each 1,22 x 10-6 U/mg; 0,944 U/mg and 0,304 U/mg and then honey Apis dorsata has amylase and lipase activity of each of 0,0645 U/mg and 0,287 U/mg.
Pembuatan dan Karakterisasi Deoiled Spent Bleaching Clay (DSBC) terpilar TiO2 dengan penambahan surfaktan rarasaponin” Nauval Dwi Fadillah; Noor Hindryawati; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i1.492

Abstract

Synthesis and characterization TiO2 pillared deoiled spent bleaching clay (DSBC) with rarasaponin as surfactant has been conducted. The activation of DSBC was performed by H2SO4 1N . Characterization had been conducted use X-Ray Diffraction, Flourescent Diffraction, Fourier Transform Infared Spectroscopy and Scaning Electron Microscopy. The results showed cristalinity of TiO2 pillared deoiled spent bleaching clay had increase until 72,5014 % after calcined 500 oC and expected there is Ti on layer based on SEM analysisSynthesis and characterization TiO2 pillared deoiled spent bleaching clay (DSBC) with rarasaponin as surfactant has been conducted. The activation of DSBC was performed by H2SO4 1N . Characterization had been conducted use X-Ray Diffraction, Flourescent Diffraction, Fourier Transform Infared Spectroscopy and Scaning Electron Microscopy. The results showed cristalinity of TiO2 pillared deoiled spent bleaching clay had increase until 72,5014 % after calcined 500 oC and expected there is Ti on layer based on SEM analysisSynthesis and characterization TiO2 pillared deoiled spent bleaching clay (DSBC) with rarasaponin as surfactant has been conducted. The activation of DSBC was performed by H2SO4 1N . Characterization had been conducted use X-Ray Diffraction, Flourescent Diffraction, Fourier Transform Infared Spectroscopy and Scaning Electron Microscopy. The results showed cristalinity of TiO2 pillared deoiled spent bleaching clay had increase until 72,5014 % after calcined 500 oC and expected there is Ti on layer based on SEM analysis.
DISTRIBUSI LOGAM TIMBAL (Pb) PADA TANAMAN WEDELIA (Wedelia trilobata (L.) Hitch) AKIBAT EMISI KENDARAAN BERMOTOR DI BEBERAPA JALAN KOTA SAMARINDA Amalia Saleha; Alimuddin -; Rahmat Gunawan
JURNAL KIMIA MULAWARMAN Vol 10 No 2 (2013)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The research has done of "The distribution of lead (Pb) on wedelia plants contaminated by vehicular emission on several main road in samarinda”. This study aimed to determine the metal concentrations of lead in roots, flowers and leaves of plants wedelia at several locations in the city of Samarinda on PM Noor Street, Wahid Hasyim Street, Pahlawan Street, AW Syahrani Street, and Belatuk Street (control location) were the different traffic density and the treatment of leaching on levels of lead found in wedelia plants. The concentrations of lead metal on wedelia plants were measured using an Atomic Absorption Spectrophotometer (AAS) at a wavelength of 283.3 nm. The results showed that The highest levels of Pb obtained on PM Noor and lowest on Belatuk, were the traffic density is high concentration of lead is absorbed more than low traffic density. And the treatment of non-leaching and leaching concentrations obtained difference was not significant, indicating leaching did not significantly affect the concentration of Pb on plants.
PEMANFAATAN INFUS KAYU SECANG (Caesalpinia sappan L) DALAM FORMULA SEDIAAN PEWARNA RAMBUT Supomo -; Dedi Setiawan; Sarifah A
JURNAL KIMIA MULAWARMAN Vol 11 No 2 (2014)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Sediaan pewarna rambut adalah kosmetika yang digunakan dalam tata rias rambut untuk mewarnai rambut, baik untuk mengembalikan warna rambut asli atau mengubah warna rambut asli menjadi warna baru. Salah satu bahan alam yang dicoba sebagai pewarna rambut adalah serbuk kayu secang (Caesalpinia sappan). Batang dan daun mengandung alkaloid, tanin, fitosterol dan zat warna brazilin. Tujuan penelitian ini adalah untuk mengetahui formula yang terbaik pada sediaan pewarna rambut infus kayu secang (Caesalpinia sappan L.) Sampel yang digunakan adalah serbuk kayu secang yang didapat dari pasar tradisional Yogyakarta. Jenis penelitian yang dilakukan merupakan eksperimental dengan variasi konsentrasi infus kayu secang serta variasi konsentrasi pirogalol dan tembaga (II) sulfat. Sediaan pewarna rambut dibuat dengan formula A1, A2, A3, B1, B2, B3, C1, C2, dan formula C3, dimanakonsentrasi masing-masing formula A, B, dan C terdiri dari pirogalol 0,5%, 1%, 1,5%, tembaga (II) sulfat 0,8%, 1,2%, 1,6%, dan infus kayu secang formula A1; A2; A3; B1; B2; B3; C1; C2; dan C3 dengan konsentrasi masing-masing 10%; 20%; 30% serta aquadest digunakan sebagai pelarut. Pewarnaan dilakukan dengan cara perendaman rambut uban selama 1-4 jam dan dicatat perubahan warna yang terjadi setiap 1 jam. Pewarnaan terbaik ditunjukkan dengan perubahan warna yang lebih jelas dari tiap jam perendaman. Evaluasi yang dilakukan meliputi pengamatan secara visual yaitu stabilitas warnaterhadap pencucian dan stabilitas warna terhadap sinar matahari. Hasil penelitian menunjukkan bahwa perubahan warna sudah terlihat jelas pada formula B3 yang terdiri dari infus serbuka kayu secang 30%, pirogalol 1%, dan tembaga (II) sulfat 1,2%. Sediaan ini menghasilkan warna rambut dari cokelatpirang sampai coklat gelap. Pada uji stabilitas terhadap sinar matahari, hasilnya menunjukkan bahwa terjadi perubahan warna menjadi lebih gelap, sedangkan uji stabilitas terhadap pencucian, tidak terjadi perubahan warna setelah 3 kali pencucian. Penelitian menunjukkan bahwa konsentrasi yang dapat menghasilkan warna terbaik yaitu fomula B3 (konsentrasi infus kayu secang 30%, pirogalol 1%, tembaga (II) sulfat 1,2%), dan infus kayu secang dapat digunakan ke dalam sediaan pewarna rambut bentuk larutan dengan menghasilkan warna coklat gelap pada formula B selama 4 jam perendaman.Kata Kunci: Caesalpinia sappan L., Sediaan Pewarna Rambut, Larutan, Infus, Formula
PEMBUATAN SURFAKTAN BERBAHAN DASAR MINYAK BIJI MAHONI Swietenia macrophylla King DENGAN DIETANOLAMINA Catur Oktaviani; Daniel Daniel
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v17i2.692

Abstract

ABSTRACT This research was conducted to synthesize diethanolamide synthesis from methyl esters of mahogany seed oil (Swietenia macrophylla King) trough an oxidation reaction with variation in catalyst weight. The results showed that the 48,97% mahogany seed oil content of acid was 24,239 mg KOH/g. The mahogany seed oil was methyl ester through the reverse asterification method 0f 0,791 mg KOH/g, saponification is 88,373 mg KOH/g. The results of the GC-MS analysis of the dominant fatty acid are methyl linoleic by 36,02%. Methyl esters are reacted with diethanolamine through an amidation method using a variation of catalyst weight which is 0,5%, 1% and 1,5% with yield percentages of 71,197%, 79,638% and 82,035%. The optimum condition of diethanolamide synthesis is the catalyst weight variation of 1.5% which can reduce water surface tension by 45,159%. The FT-IR spectrum data shows that the absorption peak which is specific to the amide group is found at wave number 1620cm-1 so it can be concluded that the compound is diethanolamide. Keyword : Mahogany seed oil, esterification amidation, diethanolamide. ABSTRAK Penelitian ini dilakukan untuk mensintesis dietanolamida dari metil ester minyak biji mahoni (Swietenia machrophylla King) melalui reaksi amidasi dengan variasi berat katalis. Hasil penelitian menunjukkan kandungan minyak biji mahoni 48,97% bilangan asam sebesar 24,239 mg KOH/g minyak biji mahoni tersebut dikonversi menjadi metil ester melalui metode esterifikasi menurunkan bilangan asam sebesar 0,791 mg KOH/g, bilangan penyabunan adalah 88,373 mg KOH/g. Hasil dari analisa GC-MS asam lemak yang dominan yaitu metil linoleat sebesar 36,02%. Metil ester direaksikan dengan dietanolamina melalui metode amidasi dengan menggunakan variasi berat katalis yaitu 0,5%, 1% dan 1,5% dengan persen rendemen sebesar 71,197%, 79,638% and 82,035%. Kondisi optimum dari sintesis dietanolamida yaitu pada variasi berat katalis 1,5% yang dapat menurunkan tegangan permukaan air sebesar 45,159%. Hasil data spektrum FT-IR menunjukkan puncak serapan yang spesifik untuk gugus amida terdapat pada bilangan gelombang 1620 cm-1 sehingga dapat disimpulkan bahwa senyawa tersebut adalah dietanolamida. Kata Kunci : Minyak biji mahoni, esterifikasi, amidasi, dietanolamida
validasi Rika anggraini; Rita Hairani; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 16 No 1 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v16i1.667

Abstract

The research about validation of the method of Hg determination on the sample from wastewater treatment plant (WWTP) PT. Badak NGL Bontang, Kalimantan Timur using cold vapour-atomic absorption spectrophotometer (CV-AAS) techniques has been conducted. To obtain a valid measurement result, determinations of the important several parameters that influence the method validation are used. The results of research showed that 20% SnCl2 solution could be used as a reducing agent. The analytic performance of measurement obtain is good, showed with the linearity (r) value ≥ 0.995, LOD was 0.2530 ppb, LOQ was 0.8432 ppb, MDL was 0.6427 ppb and repeatability and reproducibility are shown as % RSD < 2/3 CV Horwitz values. The accuracy of this method is very good with a percentage of recovery value of 114.88%. Based on the results of this research, CV-AAS method can be used in the determination of Hg in WWTP samples with the valid results.
BIOAKTIVITAS DAN KANDUNGAN GENUS Callicarpa Erwin -
JURNAL KIMIA MULAWARMAN Vol 13 No 2 (2016)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

allicarpa L is one genus of the family Lamiaceae. Callicarpa consisting of approximately 150 species such as shrubs and trees. Various species of Callicarpa is widely used in traditional medicine and it was potentially as antinociceptive, antioxidant, antimicrobial and thrombolytic drugs. Based on various reports results of previous studies have found various types of secondary metabolites from plants Callicarpa such as terpenoids, steroids and flavonoids. Some of these compounds can be developed as an anti A. aegypti mosquito, Anopheles stephensi, and natural pesticides.
PENENTUAN KADAR ASAM AMINO ESENSIAL (METIONIN, LEUSIN, ISOLEUSIN DAN LISIN) PADA TELUR PENYU DAN TELUR BEBEK agita rachmala ginting; saibun sitorus; winni astuti
JURNAL KIMIA MULAWARMAN Vol 14 No 2 (2017)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Determination of amino acids essential’s content (methionine, leucine, isoleucine and lysine) on turtle eggs and duck eggs. Turtle eggs and duck eggs are a high animal protein source and easy to obtain. This research has been carried out by categorizing of turtle eggs and duck eggs by size and continued analysis of water content by Methods of Gravimetry, analyzes protein content total by the method of Kjeldahl and analysis of the levels of essential amino acids with method of HPLC (High Performance Liquid Chromatography). In this study, the researcher found the water content in the mix (large, medium and small) 75.2889% and turtle eggs on the mix 67.9020% duck egg. Total protein content in the mix turtle eggs 8.9268% and the mix duck eggs 14.2455%. Levels of essential amino acids in the mixture turtle eggs undetectable methionine, 3.25% leucine, isoleucine and lysine 1.53% 2.50%. In the mix duck eggs undetectable methionine, 1.30% leucine, isoleucine and lysine 0.58% to 0.38%.

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