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All Journal Jurnal Dikdas Jurnal Kreatif Tadulako Online Kreatif agriTECH Unnes Science Education Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akademika Kimia Chimica et Natura Acta Indonesian Journal of Chemistry JANGKA Husada Mahakam: Jurnal Kesehatan Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Jurnal Pendidikan Guru (JPG) Panrannuangku Jurnal Pengabdian Masyarakat Journal for Lesson and Learning Studies Jurnal Kajian Pariwisata Media Eksakta Jurnal Akademika Kimia Mahakam Nursing Journal (MNJ) Jurnal Cendekia Ihya Mitra Sains Jurnal Akademika Kimia
Siti Nuryanti
Department Of Chemistry, Faculty Of Teacher Training And Education, Tadulako University, Jln. Soekarno-Hatta Km 8, Palu
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Journal : Jurnal Akademika Kimia

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Analisis Kadar Timbal (Pb) Dalam Daging Kerang Bakau (Polymesoda erosa) Dan Kerang Darah (Anadara granosa) Di Perairan Salule Pasangkayu Sulawesi Barat Rahmawati, Rahmawati; Hamzah, Baharuddin; Nuryanti, Siti
Jurnal Akademika Kimia Vol 4, No 2 (2015)
Publisher : Universitas Tadulako

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Abstract

Bivalve os one marine animals that can efficiently accumulate to heavy metal. This is due to they livein the base layer of the sediment in the aquatic and they are moving very slowly. Therefore, it has beendone a research about the analysis of consentration of lead (Pb) in the bivalve polymesoda erosa sp andthe bivalve anadara granosa at the aquatic of Salule Pasangkayu West Sulawesi has been reported byusing direct spectro. The research’s aim was to analyze concentration of Pb as heavy metal in the bivalvepolymesoda erosa and the anadara granosa sp, The results obtained that concentration of Pb at muddyplaces was higher than at sandy area. Level of Pb showed that Pb exceeds quality standard in both clamswhere in the blood clam was 3.75 mg/Kg and 3.857 in dry weight, while the Mangrove calm showedthe result of 5,00 mg/Kg and 5.25 mg/Kg in dry weight.
PEMANFAATAN MOLYMOOD TERHADAP HASIL BELAJAR SISWA PADA KONSEP ALKANA, ALKENA DAN ALKUNA PADA SISWA KELAS X SMA NEGERI 2 DOLO Sulhajir, Wahyuni; Nuryanti, Siti; Tangkas, I Made
Jurnal Akademika Kimia Vol 2, No 4 (2013)
Publisher : Universitas Tadulako

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Abstract

This research was done due to known that most students got difficulty in learning and understanding chemistry material particularly on alkana, alkena and alkuna concept. This problem occured because there was still any teacher who use conventional method in delivering the material. To make the material easy to learn, not boring and easy to understand, the teacher needs to give a learning media. The objective of this research was to increase the students’ learning outcome on the material of alkana, alkena and alkuna in SMA Negeri 2 Dolo by applying Mollymood aid. The population of the research was the tenth grade students of SMA Negeri 2 Dolo in academic year 2012/2013 with sample was 26 students of Class XA as the experimental class (given Mollymood aid for learning)and 26 students of Class XB as the control one (given conventional method). The technique of data collection done through instrument such as achievement test of alkana, alkena and alkuna. The data analysis result obtained average score on experimental class was 23.35 with deviation standard was 2.66 whereas for control class the average obtained was 20.73 with deviation standard was 2.77. Hypothesis testing result obtained tcounted = 4.59 and ttable 1.67 with significant level (α) = 0.05. Based on the research result, it showed that there was a significant difference between students’ learning outcome on chemistry taught using molymood aid and conventional one of the tenth grade students of SMA Negeri 2 Dolo in academic year 2012/2013.
Analisis Kadar Kalium (K) dan Posforus (P) Pada Limbah Kangkung Darat (Ipomea reptans Poir) Setianingsih, Rahmadiana; Nuryanti, Siti; Ratman, Ratman
Jurnal Akademika Kimia Vol 7, No 1 (2018)
Publisher : Universitas Tadulako

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Abstract

This research is aimed to determine potassium (K) and phosphorus (P) levels in the waste of swamp cabbage. The Spectrodirect instrument was used to analyze the levels of potassium and phosphorus in the waste of swamp cabbage. Based on analysis of the levels of potassium and phosphorus in the waste of swam cabbage, it was obtained that the average value of K concentration in the sample was 5.51213 mg/kg. On the other hand, the average value of P concentration in the sample was 43.19503 mg/kg. From the result of this analysis, it also demonstrated that the concentration of phosphorus was higher than the concentration of potassium.
Ekstrak Enzim Protease Dari Daun Palado (Agave Angustifolia) Dan Pemanfaatannya Dalam Proses Pembuatan Virgin Coconut Oil Male, Kasmir Sy.; Nuryanti, Siti; Rahmawati, Sitti
Jurnal Akademika Kimia Vol 3, No 3 (2014)
Publisher : Universitas Tadulako

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Abstract

Virgin coconut oil (VCO) can be made in several ways, namely through a heating process at low temperature, freeze-drying, fermentation, enzymatic, mechanical pressure or centrifugation. VCO with an enzymatic method is the making of VCO fromcoconut milk by using enzyme. The protein-oil bonds in the emulsions in coconut milk can be broken down into protease enzyme. The purpose of this research is to extract the protease enzyme in palado leaves and utilize the enzymes in the manufacturing process as well as determining the quality of VCO. This research method passed through some processes. Firstly enzyme extracts from palado leaves are prepared and coconut milk from coconut cream is made, then it is tested qualitatively the presence of protease enzyme with ninhydrin color reagent. Furthermore, the making of VCO enzymatically is undertaken by varying the ratio of the volume of coconut cream and enzyme extracts of 24 hours. VCO quality is analysis by using the parameters of smell, flavor, color, moisture content, levels of FFA (free fatty acid) and peroxide. The testing result with ninhydrin reagent gave a positive reaction (blue-purple) showing that there is enzymes alleged a class of protease in the palado leaf. The result of VCO made with the comparison of coconut cream and enzyme extracts from palado (10 : 1) has generate a VCO with a yield of 25.4%. However, from the analysis of VCO quality test results, it is obtained the smell of distinctive flavor oils, fragrance, the clean color, water content of 0.5% , FFA content of 0.25% and the peroxide number of 0 meq/kg.
Uji Daya Hambat Ekstrak Buah Kelor (Moringa oleifera Lamk) Terhadap Pertumbuhan Jamur Candida Albicans Nuryanti, Siti; Mustapa, Kasmudin; Sudarmo, I Gede
Jurnal Akademika Kimia Vol 5, No 4 (2016)
Publisher : Universitas Tadulako

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Abstract

Moringa (moringa oleifera lamk) is a nutritious plant that can cure various diseases. Part of this plant such as leaves, roots, flowers, and fruits serve as a traditional medicine. The aim of this study is to determine the inhibitory of extract of moringa fruit on the growth of the fungus candida albicans. The extract of moringa fruit is made by using several solvents such as distilled water, ethanol and hexane. Suspension of the candida albicans obtained from Clinical Laboratory, Palu, Central Sulawesi. Suspension of the candida albicans is synchronized with Mc. Farland solution. The fungus test uses a pitting method. The results showed that inhibition of extract of moringa fruit on the growth of the fungus candida albicans with solvents of distilled water provides greater results as compared with ethanol and hexane. Based on the results of the observation, the percentage of inhibition of the extract of moringa fruit on the growth of the fungus candida albicans with various solvents are 100% for distilled water, 59.99% for ethanol and 6.97% for hexane. The result of phytochemical screening test showed that the moringa fruit contains alkaloids, flavonoids and steroids.
Uji Daya Hambat Ekstrak Bawang Hutan (Eleutherine palmifolia (L.) merr) dari Matantimali Terhadap Pertumbuhan Jamur Candida albicans Wahyuni, Sri; Nuryanti, Siti; Jura, Minarni Rama
Jurnal Akademika Kimia Vol 5, No 2 (2016)
Publisher : Universitas Tadulako

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Abstract

Forest onion is a plant that is widely used as a traditional medicine and natural antioxidants. The aim of this study is to determine the extract of the forest onion that can inhibit the growth of the fungus candida albicans and to compare the inhibitory of extract of the forest onion (eleutherine palmifolia (L.) merr) by using different solvents, namely ethanol and distilled water which is carried out by the method of pitting. Suspension of the fungus candida albicanswas obtained from Clinical Laboratory Palu, Central Sulawesi. The results of research obtained that the inhibition of extract of the forest onion on growth of the fungus candida albicanswith ethanol was greater than with distilled water, the percentace was 65.44% and 54.78% for each solvents. It can be concluded that extract of the forest onion has the inhibitory on the growth of the fungus candida albicans.
Penerapan Pendekatan Saintifik Melalui Model Pembelajaran Kooperatif Tipe Jigsaw Di Kelas X SMA Negeri 9 Palu Pada Materi Stoikiometri Saldi, Heri; Nuryanti, Siti; Sakung, Jamaluddin
Jurnal Akademika Kimia Vol 6, No 1 (2017)
Publisher : Universitas Tadulako

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Abstract

This study aims to determine the influence of implementation a scientific approach through cooperative-jigsaw learning model on Stoichiometry to the learning achievement of students in class X at SMAN 9 Palu. The method was a quasi experiment with pretest-posttest control group design. The population was students of class X SMA Negeri 9 Palu, where the sample was class XB as the experimental group (n = 29) and class XA as the control group (n = 27), determined by purposive sampling technique. Data were analyzed using nonparametric statistical Mann-Whitney U-Test analysis. The results showed output “Rank” for the mean value of the experimental class was greater than the control class, 33.14 ˃ 23.52. The output of “Test Statistics”, Sig. 2-Tailed (0,026) ˂ 0.05 and Zcount(-2.23) ˂ Ztable (-1.96), as well as each classical completeness and absorption for experimental class were 79% and 83%, while for the control class were 59% and 75%. This study concluded that scientific approach through cooperative-jigsaw model on Stoichiometry influenced positively to the learning achievement of students in class X at SMA Negeri 9 Palu.
Uji Aktivitas Ektrak Daun Palado (Agave angustifolia) Sebagai Antioksidan Nur, Kurniati; Diah, Anang Wahid M.; Nuryanti, Siti
Jurnal Akademika Kimia Vol 5, No 2 (2016)
Publisher : Universitas Tadulako

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Abstract

Study on the antioxidant activity test has been conducted using palado (agave angustifolia) leaves from Tondo, Central Sulawesi. Palado plant is one of the succulent plants that can grow to a large size, and it is possible to contain antioxidant compounds. This study was conducted by an experimental method using maceration extraction technique and 1,1-difenil-2-picrylhydrazyl (DPPH) as the free radicals source, and vitamin C as the positive control, whereas UV-Vis spectrophotometer as for determining wavelength (λ) of palado leaves extracts. Sample used as much as 5 grams palado leaves, and methanol as the solvent. Variation concentrations of palado leaves extract were 20, 40, 60, 80, 100, 120, and 140 ppm. The results showed that the IC50 value of palado leaves extract was 26.182 ppm. Palado leaves extract is classified as a very powerful antioxidant based on the IC50 value. The optimum percentage antioxidant activity of palado leaves extract in inhibiting free radicals was by 84.84%.
Penentuan Kondisi Optimum Ekstraksi Ion Timbal(II) Menggunakan Teknik Emulsi Membran Cair Alam, Syamsu; Hamzah, Baharuddin; Nuryanti, Siti; Nurbaya, Siti
Jurnal Akademika Kimia Vol 3, No 2 (2014)
Publisher : Universitas Tadulako

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Abstract

A research on the extraction of lead(II) ion has been done using emulsion liquid membrane technique. This research used a laboratory experiment method by using benzoyl acetone as a carrier, paraffin liquid as the membrane, a solution of nitric acid as an internal phase, Span-80 as surfactant, and a solution of lead(II) as the sample solution. This research was conducted to determine the optimum extraction condition of lead(II) ions in solution which includes a volume ratio of emulsion to external phase and extraction capacity of lead(II) ion by emulsion liquid membrane technique. The volume ratio of emulsion to external phase used was 1:5, 1:6, 1:7, and 1:8. While the variation of concentration of lead(II) used was 220 ppm, 434 ppm, 695 ppm, and 817 ppm. The determination of the concentration of lead(II) ions in external phase is done by using a spectrophotometer SpectroDirect. The results of this research showed that the volume ratio of emulsion to external phase were in the maximum extraction percentage; 1:6 ratio. Moreover, the concentration of lead(II) were in maximum extraction percentage of 220 ppm with extraction percentage of 56.36%.
EKSTRAK BUNGA WARU (Hibiscus tiliaceus) SEBAGAI INDIKATOR ASAM-BASA Frantauansyah, Frantauansyah; Nuryanti, Siti; Hamzah, Baharuddin
Jurnal Akademika Kimia Vol 2, No 1 (2013)
Publisher : Universitas Tadulako

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Abstract

Hibiscus tiliaceus is a tribe or cottons malvacea, it is known as sea hibiscus. This plant has been known for a long time ago. It is known as a shade tree in the curb or in the edge of the river and as the embankment along the coast. Although, the canopy is not too dense, it is preferred because its roots are not deep into the soil. So, it does not damage the roads and buildings. This study of hibiscus flower extract has been done. It proved that there was indicator acid-base. Hibiscus flower washed with distilled water, cut into small piece, then add dissolved acetate ethyl and macerated. After that, filtered and residue re-extracted filtering results with absolute ethanol. Extract filtered by using gauze filter, then filtered it again with paper filter paper. The filtrate is ready to use as as acid-base indicator. After that, evaluated with benchmark indicators phenolphthalein and orange methyl to titrate acid-base such as: a strong base with a strong acid, a weak base with a strong acid and a strong base with a weak acid. The result of survey revealed that the indicator of hibiscus flower extracts indicate the equivalence point in the titration result equivalent to the comparison indicator. The result showed the indicator of the hibiscus flower extract can as a substitute to synthetic indicator (phenolphthalein and orange methyl) has been used.
Co-Authors A. Ma’ruf Afadil Agustin Tiwow Al Gifary, Muhammad Ali Amran Amran Rede Anang Wahid M.Diah Arun Haryanto Arwansyah Asmaul Husna B, Supriadi Baharuddin Hamzah Barau, Fitri Chairil Anwar Chintia N. Barani Cynthia L. Radiman Daini, Dinda Ulan Daud Karel Walanda Dewi Satria Ahmar Dhamayanti, Noviasri Diniyanti, Diniyanti Edi Sukamto Ergina, Ergina Frantauansyah, Frantauansyah Hartarti Uminah I Made Tangkas Ijirana Indarini Dwi Pursitasari Indarini Dwi Puspitasari Irwan Irwan Jamaludin M Sakung Jeane Maria Mustika Tonahi Jusman Lapatta Karmila Karmila Kasmudin Mustapa Laksono Trisnantoro Lamalat, Tri Sulistiyawati Latupeirisa, Veronica Purnama Sari Lilik Suparwati Lis K. Djaledje M. Diah, Anang Wahid Ma’ruf, Ahmad Magfirah, Magfirah Male, Kasmir Sy. Marungkil Pasaribu Megawati T. H. Romu Mery Napitupulu Minarni R.J Minarni Rama Jura Mitha Widya Ningrum Moh. Azhar Afandy Muhamad A. Martoprawiro Muhammad Agus Muljanto Muhammad Silmi Hi Abubakar Nesia Andriana Nirwan Syafrin Nur A. O. Buhang Nur, Kurniati Nurbaeti Nurbaeti Nurdin Rahman Nurfadila, Safna Nurhasan, Abdul Kodir Nurmiati Nurmiati Nursucianti, Nursucianti Paulus H. Abram Pratiwi, Tia Putri Radiansah, Roy Rahmasita Rahmasita Rahmawati, Rahmawati Rasmun, Rasmun Ratman Ratman Ratman Ratman Robiansyah, Yal S, Afadil Sabirin Matsjeh Sahida Sahida Saldi, Heri Salsabila, Unik Hanifah Setianingsih, Rahmadiana Siti Aminah Siti Nurbaya Sitti Rahmawati Somang, Olivia Inrawati I. Sri Mulyani Sabang SRI RAHAYU Sri Wahyuni Sriyulaningsi, Sriyulaningsi Sriyundiyati, Ni Putu Sudarmo, I Gede Suhardi Suhardi Suherman Suherman Suherman Suherman Sulhajir, Wahyuni Supriadi Supriadi Suwiyarsa, I Nyoman Tahril Tahril Tri Joko Raharjo U.B., Sitti Nadira Ubaidah, Nurcholis Al Winarti Winarti Yani Restiani Widjaja, Yani Restiani Yuli Nurmayanti Yuma Ardian Allu Yusuf Kendek Yusuf Kendek Yusuf Kendek