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Jurnal Sains Teknologi dan Lingkungan (JSTL)
Published by Universitas Mataram
ISSN : 24770329     EISSN : 24770310     DOI : -
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Computer Science & IT Public Health
Jurnal Sains Teknologi dan Lingkungan (JSTL), merupakan media untuk publikasi tulisan asli yang berkaitan dengan sains teknologi dan lingkungan baik dalam Bahasa Indonesia maupun Bahasa Inggris. Jurnal Sains Teknologi dan Lingkungan (JSTL) merupakan jurnal ilmiah terbitan berkala dua kali setahun (Juni dan Desember).
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Articles 335 Documents
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Nilai Gizi dan Organoleptik Bakso Daging Ayam Yang Ditambahkan Tepung Kacang Koro Pedang (Canavalia gladianta) Ni Made Andry Kartika; Alimuddin Alimuddin
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 6 No. 2 (2020): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v6i2.174

Abstract

Meetball is a common food in society and has good nutritional volue. Sword koro can be used as a binder besides having better quality and protein than tapioca flour. This study aims to determine the effect koro pedang flour to the nutritional value and organoleptic value f chicken meatballs. The method used in the study was a completely randomized designconsisting of 5 teatments and repeated 5 times, namely: KO (control), K1 (chicken meatballs + koro pedang flour 20%), K2 (chicken meatballs + koro pedang flour 25%), K3 (chicken meatballs + koro pedang flour 30%) and K4 (chicken meatballs + + koro pedang flour 35%). The variables measured ware the nutritional value or chemical composition (moisture content, ash content, fat content, and crure protein), and the organoleptic value of chicken meatballs with the addition of koro pedang flour (Canavalia Gladiante). Analysis of the data used the analysis of variance based on completely randomized design CRD), from the results of different analyzes followed by the LSD test. The results showed that the nutritional value showed very significant results or all treatments (K1,K2,K3 dan K4) were significantly different(P>0.01) for crude protein, crude fiber, crude fat and ash. Maenwhile, for the water content in this treatment, no significant results were found. The highest average value is shown in the K4 tretment for protein, crude fat, crude fiber and ash. The organoleptic value showed significant results (P<0.05) on the K1 treatment for taste, color, texture and acceptance. Maenwhile, the aroma is insignificant because the aroma of the meatballs added with koro flour has a very strong and distinctive aroma
Penambahan Level Ekstrak Wortel (Daucus carota) pada Pengencer Andromed Dalam Mempertahankan Kualitas Spermatozoa Sapi Bali pada Suhu 5 OC Yuni Mariani; Alimuddin Alimuddin
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 6 No. 2 (2020): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v6i2.175

Abstract

A good diluents must have the ability to reduce the rate of decline in the quality of spermatozoa, by choosing the right diluents that is able to maintain the quality of spermatozoa. The addition of antioxidants is believed to be able to maintain spermatozoa life longer, one of which is the addition of carrot extract. The purpose of this study was to maintain the quality of Bali cattle spermatozoa stored at 5 0C by utilizing the quality of bali cattle spermatozoa because they contain antioxidants. This study used a completely randomized design (CRD) consisting of 5 treatments and 5 replications, namely: P0 = cement + andromed, P1 = cement + andromed + 5 % carrot extract, P2 = cement + andromed + 10 % carrot extract, P3 = cement + andromed + 15 % carrot extract, P4 = cement + andromed + 20 % carrot extract. The variables measured were the quality of the spermatozoa microscopically, namely the motility and viability of the spermatozoa. The result showed that the increase in the level of carrot extract in andromed diluent in maintaining spermatozoa motility at 5 0C was not significant (P>0,05), meaning that each treatment had the same effect in maintaining spermatozoa motility. The percentage of motility in all treatments is feasible to be applied to the IB program because is still shows a value of more than 40 %. 
Pengaruh Penambahan Jamur Tiram (PLEUROTUS SP.) Terhadap Nilai Komposisi Kimia Dan Organoleptik Bakso Ayam Broiler Ria Harmayani; Nefi Andriana Fajri
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 7 No. 1 (2021): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v7i1.181

Abstract

Experimental research aimed to determine the effect of the addition of oyster mushrooms on the chemical composition and organoleptic value of broiler chicken meatballs. The research was corried out for 4 months from July to October 2020. The making of broiler chicken meatballs and organoleptics tests was carried out at the Laboratory of the Faculty of Animal Science UNW Mataram and chemical composition analysis was carried out at the INMT Laboratory of Mataram University. The research design used was a completely randomized design with 4 treatments, namely the addition of oyster mushrooms as much as 0%, 10%, 20% and 30% of the weight of chicken meat and each treatment there were 5 replications. The data from the research on the chemical composition of chicken meatballs were analyzed using variant analysis and continued with the LSD test and the organoleptic values were obtained using a hedonic scale from 30 panelists who were somewhat trained as replication, then analyzed using the Friedman Test. The analysis of variance result showed that the addition of oyster mushrooms in broiler’s chicken meatball dough had a very significant effect (P >0.01) on the value of chemical composition, namely moisture, ash, fat, fiber and protein content and had a significant effect (P>0.05) organoleptic values are colour preference, taste and aceeptance of meatballs, but it has no significant effect (P< 0.05) on the preference for aroma and texture of meatballs. The formulation of addition oyster mushrooms to broiler chicken meatballs based on the chemical composition value is the addition of 10% oyster mushrooms containing the highest protein of 8.51±0.014%, when compared to the addition of mushroom addition 0%, 20% and 30% and has met Indonesian National Standard for combination meatball and can be recomended for as nutritional terapy in the midst of the Covid-19 pandemic. Based on the organoleptic value, the formulation of broiler chicken meatballs with the addition of oyster mushrooms as much as 30% can provide higher organoleptic (colour, taste and acceptability) when compared to the addition of 0%, 10% and 20%.
Kesesuaian Zonasi Pulau-Pulau Kecil : Studi Kasus Kawasan Konservasi Gili Sulat Gili Lawang Lombok Indonesia Sitti Hilyana; Sadikin Amir; Saptono Waspodo
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 6 No. 2 (2020): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v6i2.183

Abstract

Gili Sulat Gili Lawang are small islands that have high marine biodiversity and have been designated as a Marine Tourism Park (TWP) covering an area of 10,000 hectares.  This study aims to analyze the suitability of zoning and analysis of space use in each zone. The data was collected by using a structured interview technique using a questionnaire and Focus Group Discussion (FGD) approach. Zoning suitability analysis used a Geographic Information System (GIS). The assessment showed that the conditions of the mangrove ecosystem, coral reef ecosystem and seagrass ecosystem were in the bad to good categories. Based on the zoning suitability analysis of 193.83 hectares (44.02%) of the coral reef area suitable for the core zone, 143.33 hectares (32.55%) consists of 108 hectares of coral reef ecosystems and 35.43 hectares of seagrass ecosystems suitable for the zone. limited use, and 9,666.47 hectares are suitable for other zones consisting of a coral reef rehabilitation zone covering an area of 93.11 hectares, a protection zone of 93.11 hectares and other waters 8,585.76 hectares.
Potensi Suplemen Kerang Kijing (Pilsbryocomcha excilis) Sebagai Pupuk Alami Ramah Lingkungan: Potential of Mussel Shell (Pilsbryocomcha excilis) Suplement as Ecofertilizer Irna Il Sanuriza; Dwi Kartika Risfianty
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 7 No. 2 (2021): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v7i2.190

Abstract

High input of chemical fertilizer causes land degradation on agriculture. This research is experimental which aims to analyze degree of acidity and macro-nutrients in mussel shell, and analyze chemical properties of soil before and after application of mussel shell suplement. The research was conducted during July to September 2020 at BPTP Laboratory, Narmada West Lombok. Data were analyzed descriptively. The results showed that mussel shell (Pilsbryocomcha excilis) had pH and macro-nutrients potential as an ecofertilizer. Soil chemical properties increase after application of mussel shell (Pilsbryocomcha excilis) supplement. Key words: mussel; shell; soil enhancer; suplement
Serbuk Biji Asam Jawa (Tamarin Dusindica L) untuk Pengelolaan Limbah Industri Cair Tempe (Studi Kasus Mataram): Tamarind Seed Powder (Tamarindusindica, L) to Treatment the Liquid Waste Industrial of Tempe (Mataram case study) Dwi Agustini; Leny Fitriah
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 7 No. 2 (2021): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v7i2.193

Abstract

Most of the tempe industry have not been equipped with a waste water treatment unit. It is usually a water soaked soybeans and soybean excess water is still discharged directly in the into the environment. Liquid waste industrial of tempeh contain high organic materials. One of the process for wastewater treatment is coagulation with the addition of a positively charged polyelectrolyte in tempeh wastewater as negatively charged. One of plants in Indonesia that can be used as an alternative coagulant is tamarind seeds (Tamarindus indica, L).it can be used for wastewater treatment is more economical. The aims of this experiment is to determine the optimum stirring time, optimum pH of the waste and optimum coagulant dosage for treatment of the tempeh wastewater with coagulant tamarind seed powder. The experiment studied were stirring time, the pH of thetempeh wastewater and coagulant dosage to the percentage decrease in turbidity and COD (Chemical Oxygen Demand). The variables in the experiment were stirring time (10,15, 20, 25 and 30 minutes), the pH of the waste (3; 3.5; 4; 4 and 5) and the dosage of tamarind seed powder (100, 300, 500, 700, and 900 mg / L). COD testing methods is closed reflux method by spectrophotometry and turbidity testing using Turbidimeter. The results showed that the with coagulant tamarind seed powder effectively lowered cod levels and the dryness of tempeh liquid industrial waste. The optimum pH obtained is pH 4, optimum stirring time is 25 minutes and the increase in optimum coagulant dose is 500 mg with a percentage decrease in COD levels and noise by 90.57% and 78.94%.  Key words: liquid waste; sour power; turbidity; COD
Perbaikan Stabilitas Dinamik Sistem Tenaga Terintegrasi Pembangkit Listrik Tenaga Mikro Hidro dan Diesel Menggunakan PSS Berbasis ANFIS I Made Ginarsa; I Made Ari Nrartha; Sultan Sultan; Agung Budi Muljono; Sabar Nababan
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 6 No. 2 (2020): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v6i2.197

Abstract

Power generating units should be built closed to load centers according to electric power company regulation. These units are generally small in capacity, so that makes power transfer among inter- and outer-areas is easier to be done. This study aims to improve dynamic stability of a Micro Hydro Power Plant (MHPP) on perspective of 5% load increased in Diesel Power Plant (DPP). The DPP is equipped by an ANFIS-based Power System Stabilizer (PSS) in this scheme. Two inputs with Gauss2mf membership function (MF) type and 5-number of the each MF are used to implement the ANFIS model. Simulation results show that overshoot of MHPP power angle deviation is reduced to the values of 0.023, 0.0138 and 0.0132°, for the DPP without PSS, conventional and ANFIS PSS, respectively.  Also, reduction in setting time is achieved at times >6, 4.051 and 3.553 s. It is shown that the ANFIS PSS is more effective to enhance the dynamic stability compared to other PSS
Konversi Empiris Summary Magnitude, Local Magnitude, Body-Wave Magnitude, Surface Magnitude, dan Moment Magnitude Menggunakan Data Gempabumi 1922-2020 di Nusa Tenggara Barat Rian Mahendra Taruna; Anggitya Pratiwi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 7 No. 1 (2021): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v7i1.198

Abstract

The existence of magnitude type variation from existing earthquake catalogue sources show that uniforming process is necessary. Beside that these type of magnitude will saturates in certain value, which are different with moment magnitude (Mw) which is not saturated and can describe earthquake process better. Our research initially did compatibility test between summary magnitude which is largely used by BMKG with other magnitude type. Furthermore, the purpose of our research is determination of empirical relation between magnitude type summary magnitude (M), local magnitude (ML), body-wave magnitude (mb), dan surface magnitude (Ms) which are usually used by earthquake catalogues to Mw. Method used in this research is linear regression using data set from BMKG, ISC-EHB, USGS, and Global CMT catalogues with are limited in West Nusa Tenggara and surrounding area. Data used in this research contains of 24.703 earthquake events during period May 9th 1922 until June 27th 2020. The result of this research shows there was good relation between M magnitude type with others magnitude type. Our research also found a conversion formula of M, ML, MLv, mb, and Ms to Mw with well-defined correlation.
Pengaruh Aktivitas Tambang Galian C Terhadap Perubahan Lingkungan Fisik Di Kecamatan Parangloe Kabupaten Gowa M Riza Pratama; Fadhil Surur
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 7 No. 1 (2021): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v7i1.200

Abstract

In addition to contributing PAD, the excavation mining activities in Gowa have also resulted in various impacts of environmental damage in the form of land subsidence, erosion, deposition (sedimentation), noise, dust and disturbed groundwater levels. This condition not only causes a decrease in the quality of the environment but also has a very serious impact on human health and psyche. This study aims to determine how much influence the c excavation mining activity has on changes in physical environmental conditions and to determine the mining management strategy of the c quarry in Parangloe District, Gowa Regency. The method of data collection was carried out by using field observation techniques, interviews, agency surveys, documentation and literature review methods. The analysis used in this study is multiple regression analysis and SWOT analysis. Based on the results of the analysis, it is found that mining activities affect infrastructure, environmental quality and institutions. Meanwhile, mining activities do not affect the facilities. The quarry management strategy based on the results of the analysis is a strategy that uses strength and takes advantage of opportunities, namely the management of mining C by utilizing local technology and resources in improving the regional economy.
Modifikasi Sifat Mineralogi dan Fisiko-Kimia Bahan Tanah Vertik dengan Ball Mill Berenergi Tinggi Joko Priyono; Ismail Yasin; Bustan Bustan
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 7 No. 1 (2021): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v7i1.203

Abstract

test of modifying the properties of vertic material by using a ball milling technique was carried out with the primary aim to eliminate the vertic (swelling-shrinking) property and increase the electrical charge of the material. The clay fraction of Vertisol was dried and ball milled for 5, 10, and 20 minutes. Results reveal that the clay fraction of the soil material was dominated by montmorillonite mineral, and ball milling for > 5 minutes transformed the crystalline montmorillonite into amorphous (non-crystalline) particles. Those changes were followed by increasing the vertic features, cation exchange capacity, water holding capacity, and suspension effect of the milled material. The improvement of vertic characteristics might be due to the increase of electric charge of the milled particles. Thus, high-energy ball milling was an effective technique to improve the reactivity and vertic property of vertic material of Vertisols. Further studies are needed to evaluate the potential uses of modified vertic materials as ceramic material, cement component, adsorbent of heavy metals, and other contaminants, or catalysator

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