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Science and Technology Indonesia

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Published by Universitas Sriwijaya

ISSN : 25804405 EISSN : 25804391 DOI : -

Core Subject : Science, Social, Engineering,

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science Materials Science & Nanotechnology Physics

An international Peer-review journal in the field of science and technology published by The Indonesian Science and Technology Society. Science and Technology Indonesia is a member of Crossref with DOI prefix number: 10.26554/sti. Science and Technology Indonesia publishes quarterly (January, April, July, October). Science and Technology Indonesia is an international scholarly journal on the field of science and technology aimed to publish a high-quality scientific paper including original research papers, reviews, short communication, and technical notes. This journal welcomes the submission of articles that covers a typical subject of natural science and technology such as: > Chemistry > Biology > Physics > Marine Science > Pharmacy > Chemical Engineering > Environmental Science and Engineering > Computational Engineering > Biotechnology Journal Commencement: October 2016

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Articles 521 Documents

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Adsorption of procion red and congo red dyes using microalgae Spirulina sp Risfidian Mohadi; Zazili Hanafiah; Hermansyah Hermansyah; Hilda Zulkifli
Science and Technology Indonesia Vol. 2 No. 4 (2017): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Adsorption of procion red and congo red dyes using microalgae Spirulina sp was conducted. Spirulina sp was obtained by cultivation and production in laboratory scale. Spirulina sp was used as adsorbent for adsorption of dyes. Adsorption process was studied by kinetic and thermodynamic in order to know the adsorption phenomena. The results showed that kinetically congo red is reactive than procion red on Spirulina sp. On the other hand, thermodynamically procion red was stable than congo red on Spirulina sp which was indicated by adsorption capacity, enthalpy, and entropy.

Correlation Among Education, Knowledge, And Economics Of Mother Toward Antipyretic Drug Usage For Toddler In Kangkung Village OKUT Sumsel 2017 Rennie Puspa Novita; Atika Akbari; Nikita Surya Dharma; Endang Putria Sukma
Science and Technology Indonesia Vol. 3 No. 2 (2018): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Fever is a symptom mostly happen with all diseases which condition shows elevated body temperature above normal (38°C) that are common among toddler. Handling fever using antipyretics should be considered related to the rationale of its use. Rationality aspect which include indication accuracy, precision of medicine, patient accuracy, dosage accuracy and precision of administration, and as well as alert to side effects. Handling fever in toddlers is very dependent on the role of parents especially mother. Different maternal education, knowledge, and economics will result in the rationale of the use of different antipyretic drugs. This study aimed to investigate whether there is relation among education, knowledge, and economics of mother toward antipyretic drug usage for toddler in Kangkung Village OKUT SUMSEL 2017 by using cross sectional design. The sample was collected using simple random sampling to get 47 samples which fulfilled the inclusion criteria. The data were collected by interview based on questionnaire and analyzed by Chi-Square test using SPSS® version 23.0. The data presented descriptively showed most of the respondents were highly educated (66%), high knowledge (61.7%), and low economic level (93.6%) and the rational use of antipyretic for toddler were 100% for appropriate drug indication, precision of medicine, patient appropriateness, and alert for side effects, as well as 31.9% dosage precision and mode of administration. The result of Chi-Square test showed that the p value for education level (p >0.05) and economic level (p >0.05) had no significant correlation, meanwhile the knowledge level (p <0.05) showed significant different to the rational use of antipyretic for toddler. It can be concluded that the knowledge toward of mother affect the rational use of antipyretic for toddler in Kangkung village OKUT regency SUMSEL 2017.

The Definite Positive Property of Characteristic Function from Compound Geometric Distribution as The Sum of Gamma Distribution Darvi Mailisa Putri; Maiyastri Maiyastri; Dodi Devianto
Science and Technology Indonesia Vol. 3 No. 1 (2018): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

In this expository article we survey characterization of compound geometric distribution as the sum of gamma distribution. The characterization of this compound distribution is obtained by using the property of characteristic function as the Laplace-Stieltjes transform. The property of definite positive characteristice function of compound geometric distribution as the sum of gamma distribution is explained by analytical methods as the quadratic form of characteristic function.

The Standardization of Ethanolic Extract of Tahongai Leaves (Kleinhovia hospita L.) Indah Solihah; Mardiyanto Mardiyanto; Soilia Fertilita; Herlina Herlina; Oktia Charmila
Science and Technology Indonesia Vol. 3 No. 1 (2018): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Extract is basic material for herbal drug. The formulation of herbal drugs requires consistent of biological activity, a consistent chemical profile, or simply a quality assurance programs that can be achieved by standardizing extracts. The leaves of tahongai (Kleinhovia hospita L.) have been traditionally used in Komering tribes as phytotherapy to cure the inflammation related diseases including cancer, furuncles, polyps and tonsillitis. The aim at this study was to standardize the quality of tahongai leaves ethanolic extract by determining the specific and non specific parameters of ethanolic extract of Tahongai leaves (Kleinhovia hospita L.). The Preliminary phytochemical analysis revealed presence of alkaloids, flavonoids, saponins, tanins, and steroids in extract. The result of specific parameters extracts showed that the organoleptic properties of ethanolic extract of tahongai leaves were thick, brownish black in color, has characteristic odor, astringent with slightly bitter taste, the water and ethanol soluble extractive content were 19.263% ± 0.95 and 18.30% ± 0.51 respectively. The non specific parameters of tahongai leave ethanolic extract showed the density of extract was 1.413 g/mL ± 0.04, the water content value of 21.16% ± 0.55, total ash content 15.64% ± 0.75, acid insoluble ash content 8.282% ± 0.28, Pb contamination content 3,67 ppm, Cd contamination content <0,0043 ppm, total bacteria contamination 90.5 x 101 colony/g, and the total mold and yeast contamination of 1 x 101 colony/g.

Analysis of Potential Landslides Using Geographic Information System (GIS) on Rail Tunnel in Gunung Gajah Village, Lahat Regency of South Sumatra Mirza Adi Warman; Muhammad Taufik Toha; Endang Wiwik Dyah Hastuti
Science and Technology Indonesia Vol. 3 No. 2 (2018): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Lahat Regency is one of the cities which is prone to geological disasters such as landslides. The landslide is caused by a varied topography such as flat, hilly or mountainous. On January, 23rd 2016, the landslide occurred on the mouth of a railway tunnel in Gunung Gajah Village, Lahat Regency. The purpose of this study is to determine the influence of geological factor on the slope stability. The method of research is a survey method based on geographic information systems in the form of interpretation and analysis of the causes and triggers of landslides with a direct approach in the field by doing scoring an overlay technique. The analysis obtained the parameters of landslides such as: slope, lithology/physical properties of rocks, geological structure and land use. The results and conclusions of this research are the landslide potential distribution map in Gunung Gajah Village, Lahat Regency consisting of three classes of landslide vulnerability: low, medium and high and in the focus areas of research entering the high level of vulnerability.

Furosemide self nano emulsifying drug delivery system (SNEDDS) formulation comprising of capryol-90, polysorbate-80, and peg-400 with simplex-lattice-design Najma Annuria Fithri; Mardiyanto Mardiyanto; Rennie Puspa Novita; Vicky Andrean
Science and Technology Indonesia Vol. 2 No. 4 (2017): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Preparation of SNEDDS aims to improve solubility and absorption of furosemide in the body to reduce the dosage and minimize the side effects of drugs. Ternary diagram constructed from composition mixture produced nanoemulsion in the range of 20-40% of capryol-90, 20-40% polysorbate-80 and 40-60% PEG-400. Formulations of SNEDDS using Design-Expert®10 with simplex-lattice-design method in the study was aimed to investigate the effect of SNEDDS each component's proportions towards test responses. Emulsification time, drug content and viscosity were best demonstrated by run-7 with consecutive values of 131.68±2.14 seconds, 99.89±2.68% and 0.87±0.0043 mm2/s. The optimum formula was obtained through entering test response parameter data of all thirteen formula. Drug content and emulsification time was 107.0 ± 1.44% and 155.59±1.56 seconds with viscosity value 0.91±0.00 mm2/s. From the physical stability studies, SNEDDS formulas were stable and did not show phase separation when exposed to temparature stress testing.

Non-Destructive Measurement of Green Bitter Gourd Quality Component Using Near Infrared Spectroscopy (NIRS) Kusumiyati Kusumiyati; Wawan Sutari; Jajang Sauman Hamdani; Syariful Mubarok; Rika Bhernike Sitepu; Ade Risti Oktavia
Science and Technology Indonesia Vol. 3 No. 2 (2018): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

The quality component measurement of horticultural products becomes more important to achieve better quality products also to obtain uniform product. Recently, measurement by non-destructive methods turns out to be more needed, because consumers become more selective and demand producers to develop a quick, effective and accurate quality assessment system. Near Infrared Spectroscopy (NIRS) can measure plant contents quickly, relatively economical in a bigger scale, and importantly non-destructive. The measurement of quality components of green bitter gourd, such as firmness, water content, total soluble solid, and color, are important but have not been widely conducted. This research was conducted from June to August 2013 at Post Harvest Laboratory, Faculty of Agriculture, Padjadjaran University, Sumedang, Indonesia with PLS regression modeling method. The results show R-value and standard error of 0.91 and 0.47 for water content, 0.93 and 1.03 for firmness, and 0.95 and 0.49 for a* value of fruit color.

Bioremediation of Spent Bleaching Earth (SBE) Wastes using Lipolitic Bacteria (Bacillus cereus) with Variation of Inoculum Volume Maria Lusia; Nuni Gofar; Hary Widjajanti
Science and Technology Indonesia Vol. 3 No. 1 (2018): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Spent bleaching earth (SBE) is a solid waste was generated from the CPO refining step into cooking oil. SBE that was discharged directly into the environment has the potential to pollute the environment, because in the SBE waste contained oil and acid residues, which are easily to be oxidized and flammable. Therefore, SBE must be processed first before being discharged into the environment. One way to manage SBE is by bioremediation. Bioremediation is a method on cleaning the environment from contaminants by using biological agents, such as bacteria, fungi etc. The bacterial isolates used in this study were Bacillus cereus. This study aims to obtain the best inoculum and to know the ability of Bacillus cereus bacteria in degrading the oil content in SBE waste. This study used Completely Randomized Design with the volume of Bacillus cereus bacteria inoculum as a treatment, consisting of 6 treatment levels of 0 mL kg-1, 25 mL kg-1, 50 mL kg-1, 75 mL kg-1, 100 mL kg-1, 125 mL kg-1. Each treatment level was repeated 3 times, so taht 18 experimental units were obtained. Observation was done once a week, in a month. Parameters observed were bacterial population, percentage of oil degradation, and oil content degradation. The best treatment result for the bacterial population was obtained at the treatment of 100 mL kg-1, at week 4 which was 7,4 x 108 cfu g-1, and for the oil degradation was obtained at 50 mL kg-1 on the treatment at week 4 as big as 90,43%.

Factors of Medicinal Plants Users as Alternative Medicinal in Indonesia Yunita Theresiana; Kamaluddin Kamaluddin; Sriati Sriati; Lili Erina
Science and Technology Indonesia Vol. 3 No. 2 (2018): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Traditional medicines are the cultural heritance of Indonesian nation that should be preserved and developed in order to support the society’s health development and to improve the society’s economy. This research was aimed to figure out the society’s behaviors in using traditional medicines and the dominant factors that influence them in using traditional medicines. This research is a non-experimental research, with analytical survey method and cross-sectional approach. Fifty percent of the existing districts (16 districts) were selected randomly to serve as the sample. The districts selected included the districts of Muara Kuang, Tj. Raja, Lubuk Keliat, Payaraman, Indralaya, Pemulutan, Pemulutan Selatan and Rantau Panjang, totaling eight. The number of villages selected was 66. From these villages, the research sample was selected using stratified random sampling technique, and a sample of 400 people was obtained. The analysis was conducted in a bivariate manner with chi square test. The results showed that the respondents were motivated to use traditional medicines through (a) predisposing factors perceived sickness; (b) enabling factors, including economic level, location of domicile, type of complaints, insurance and distance to health facilities; and (c) reinforcing factors, including family support and traditional medicine promotion. Serving as the predicting factors in the traditional medicine use were the variables perceived sickness, type of complaint, distance to health facilities and traditional medicine promotion, with the variables occupation, insurance, education, family support, domicile and income serving as the confounding variables.

Antidiabetic Activity Test of Ethanolic Seri Leave’s (Muntingia Calabura L.) Extract in Male Rats Induced by Alloxan Herlina Herlina; Annisa Amriani; Indah Solihah; Rizky Sintya
Science and Technology Indonesia Vol. 3 No. 1 (2018): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Antidiabetic activity test of ethanol extract of seri leave (Muntingia calabura L.) rats induced by alloxan has been done. Male wistar albino rats are used as animal models which divided into 6 groups, normal group (aquadest), negative control group (Na CMC 0,5%), positive control group (glibenclamide 0,43 mg/200 gBB), and 1, 2, and 3 treatment groups (ethanol extract of seri leave 65, 130, dan 260 mg/kgBB). Rats blood glucose level after induced intraperitoneally by alloxan 130 mg/kgBB can be stated as diabetes when >200 mg/dL. Preprandial blood glucose levels are measured using DTN-410-K photometer, on day 0, 5, 10, and 15. The average result of AUC0-15 and percentage of decreasing blood glucose level for positive control group are 2732,5 and 37,43%, and 3 treatment groups (65 mg/kgBB, 130 mg/kgBB, and 260 mg/kgBB) 3105 and 28,90%; 2962,5 and 32,16%; 2810 and 35,66%. This point indicated that the ethanol extract of seri leave has an antidiabetic activity and there is no significant difference compared with glibenclamide (p<0,05). Percentage of blood glucose decrease level the third treatment group there is no significant difference compare with positive control group. According to the relation between percentage of blood glucose decrease level with dose, value of ED50 of ethanol extract of seri leave is 692,424 mg/kgBB.

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