JURNAL ILMIAH SAINS最新文献

{"title":"Efektivitas Penambahan Moving Bed Biofilm Reactor (MBBR) Terhadap Kualitas Air Limbah di Instalasi Pengolahan Air Limbah Pondok Pesantren Mahasiswa Universitas Islam Lamongan","authors":"Gading Wilda Aniriani, Marsha Savira Agatha Putri, Trisnawati Nengseh","doi":"10.35799/jis.v22i1.35562","DOIUrl":"https://doi.org/10.35799/jis.v22i1.35562","url":null,"abstract":"Penelitian ini bertujuan untuk mengetahui pengaruh penambahan MBBR terhadap kualitas air limbah domestik Instalasi Pengolahan Air Limbah (IPAL) komunal di Pondok Pesantren Mahasiswa Universitas Islam Lamongan (Ponpesma Unisla). Sejak dibangunnya IPAL komunal belum pernah dilakukan pengujian kualitas air hasil olahan IPAL. Air hasil olahan IPAL tersebut dialirkan lansung pada irigasi pertanian, sehingga kualitas air limbah harus memenuhi standar baku mutu PermenLHK No.P68 Tahun 2016 agar aman dibuang pada lingkungan. Diharapkan penambahan MBBR dapat menurunkan kadar polutan yang ada pada air limbah sehingga aman ketika dibuang pada lingkungan. Data yang dihasilkan pada penelitian ini dideskripsikan menggunakan metode deskriptif analitik dan eksperimental dengan mendesain alat reaktor uji untuk MBBR bekerja untuk menurunkan kadar polutan yang ada pada air hasil olahan  IPAL Pondok Pesantren Mahasiswa Universitas Islam Lamongan. Hasil yang diperoleh dalam pengujian parameter fisika, kimia dan biologi, MBBR dapat menurunkan kadar TSS, COD, BOD dan amonia berturut-turut sebesar 73.57%, 35.50%, 61.75% dan 29.10%. Sedangkan parameter yang mengalami kenaikan yaitu parameter pH kemudian minyak dan lemak sebesar 10.44%, 19.14%. Indeks MPN pada pengujian total coliform berjumlah 8/100 mL. Penelitian ini menyimpulkan bahwa MBBR hanya dapat menurunkan kadar TSS, COD, BOD dan amonia. persentase penurunan yang paling tinggi terdapat pada parameter BOD dan yang paling rendah amonia.Kata kunci: Instalasi pengolahan air limbah; moving bed biofilm reactor; kualitas airThe Addition Efectivity of MBBR on Wastewater Treatment Plant Water Quality Islamic Boarding School Students of Lamongan UniversityABSTRACTThis study aims to determine the effect of the addition of MBBR on the quality of communal Wastewater Treatment Plant (WWTP) domestic wastewater at the Lamongan Islamic Student Islamic Boarding School, the treated water from the WWTP is channeled directly to agricultural irrigation, so that the quality of wastewater must meet the quality standards of the Minister of Environment and Forestry Regulation No. P68 of 2016 in order to be safely disposed of. on the environment.   is expected that the addition of MBBR can reduce the levels of pollutants in wastewater so that it is safe when disposed of in the environment. The data generated in this study were described using descriptive analytical and experimental methods by designing a test reactor. The results obtained in physical, chemical and biological tests based on the parameters tested by MBBR can reduce the levels of TSS, COD, BOD, Ammonia by 73.57%, 35.50%, 61.75%, 29.10%. While the parameters that have increased are the pH parameters then oil and fat by 10.44%, 19.14%. MPN index in total coliform testing is 8/100 mL. MBBR can only reduce levels of TSS, COD, BOD and ammonia.Keywords: Moving bed biofilm reactor; wastewater treatment plant; water quality","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76362126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Habitat Gastropoda pada Ekosistem Lamun di Perairan Pulau Semujur, Bangka Belitung","authors":"Hajrul Nurtami Dinata, Henri Henri, Wahyu Adi","doi":"10.35799/jis.v22i1.37694","DOIUrl":"https://doi.org/10.35799/jis.v22i1.37694","url":null,"abstract":"Lamun merupakan tumbuhan berbunga (Angiospermae) yang memiliki rhizoma daun dan akar sejati yang dapat hidup terendam di dalam air laut. Gastropoda merupakan anggota moluska, dimana sebagian besar memiliki tubuh yang dilindungi oleh cangkang. Penelitian ini bertujuan untuk menganalisis kelimpahan dan pola sebaran gastropoda pada ekosistem padang lamun pesisir Pulau Semujur Kabupaten Bangka Tengah, Bangka Belitung. Penelitian ini dilaksanakan pada perairan Pulau Semujur Kabupaten Bangka Tengah dengan empat titik arah mata angin sekitar Pulau Semujur. Penelitian ini menggunakan metode transek kuadrat. Berdasarkan hasil penelitian gastropoda yang ditemukan sbanyak 9 famili dengan 19 spesies dan total seluruh individu sebanyak 1183 individu. Jenis gastropoda yang memiliki jumlah individu terbanyak adalah Cerithium traillii yang berjumlah 137 individu. Indeks keanekaragaman gastropoda di Pulau Semujur termasuk dalam kategori sedang. Pola sebaran gastropoda secara keseluruhan dengan kategori mengelompok. Jumlah spesies dan jumlah individu makroalga dipengaruhi oleh parameter fisik-kimia perairan yang meliputi kecepatan arus, suhu air dan salinitas. Hasil penelitian ini membuktikan bahwa keanekaragaman gastropoda dengan padang lamun saling berhubungan dan dapat dipengaruhi oleh faktor fisika kimia lingkungan tersebut.Kata kunci: Gastropoda; keanekaragaman; lamun; pola sebaran; Pulau SemujurAnalysis of Gastropod Habitat in Seagrass Ecosystems in the Waters of Semujur Island, Bangka BelitungABSTRACTSeagrass are flowering plants (Angiospermae) which has rhizoma leaves and true roots that can live submerged in sea water. Gastropods are members of mollusks, which the most body parts are protected by shell. This study aim is to analyze the abundance and distribution patterns of gastropods in the seagrass ecosystem of the coast of Semujur Island, Central Bangka Regency, Bangka Belitung. This research was conducted located in Semujur Island, Central Bangka Regency, four winds points of compass around the island. Quadratic transect method is used for this research. Based on the results of research found 9 families with 19 species and a total of 1183 individuals gastropods. Cerithium traillii (Sowerby II, 1855) is the highest number individuals founded which amount up to 137 individuals. Gastropod diversity index in Semujur Island is included to the medium category. Overall distribution pattern of gastropods with clustered categories The number of species and individual macroalgae are affected by the physical-chemical parameters of waters which include stream speed, temperature and pH. The results of this study prove that the diversity of gastropods with seagrass beds is interconncted and can be related by physical and chemical environmental factors.Keywords: Distribution pattern; diversity; gastropods; seagrass; Semujur Island","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84549521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efek Hepatoprotektor Ekstrak Etanol Batang Bajakah Tampala (Spatholobus Littoralis Hassk) pada Tikus yang Diinduksi Isoniazid","authors":"Dhimas Adhityasmara, Dewi Ramonah","doi":"10.35799/jis.v22i1.36293","DOIUrl":"https://doi.org/10.35799/jis.v22i1.36293","url":null,"abstract":"Tujuan penelitian ini yaitu untuk mengetahui pengaruh pemberian dan dosis efektif ekstrak etanol batang bajakah terhadap penurunan SGOT & SGPT tikus putih jantan galur Wistar yang diinduksi isoniazid. Penelitian ini merupakan jenis penelitian eksperimental, dengan obyek penelitian penurunan kadar SGPT & SGOT setelah diberikan senyawa uji selama 14 hari. Dosis sediaan ekstrak etanol batang bajakah yang digunakan adalah dosis 200, 300 dan 400 mg/kgBB. Kontrol positif  digunakan   silymarin   dosis   5 mg/200gBB.  Sebagai  penginduksi  digunakan isoniazid  dosis 350 mg/KgBB  yang diberikan 14 hari sebelum perlakuan senyawa uji. Kelompok  normal  tanpa  diberi  perlakuan  untuk  mengetahui  pengaruh  lingkungan  terhadap hewan uji. Hasil penelitian menunjukan ekstrak etanol batang bajakah tampala memiliki efek hepatoprotektor pada tikus jantan yang dinduksi isoniazid 350mg/kgBB selama 14 hari. Dosis efektif ekstrak etanol batang bajakah sebagai hepatoprotektor adalah 200 mg/kgBB.Kata kunci: Bajakah tampala; hepatoprotektor; isoniazidHepatoprotector Effects of Bajakah Tampala Stem Ethanol Extract (Spatholobus Littoralis Hassk) on Isoniazid Induced RatsABSTRACTThe purpose of this study was to determine the effect of administration and effective dose of ethanol extract of bajakah stems on the reduction of SGOT & SGPT of isoniazid-induced male white rats of Wistar strain. This research is an experimental type of research, with the object of research decreasing levels of SGPT & SGOT after being given the test compound for 14 days. The dosages of the ethanol extract of the bajakah stem used were doses of 200, 300 and 400 mg/kgBW. The positive control used silymarin at a dose of 5 mg/200gBW. As an inducer, isoniazid at a dose of 350 mg/KgBW was used 14 days before the treatment of the test compound. The normal group without treatment was to determine the effect of the environment on the test animals. The results showed that the ethanol extract of Bajakah tampala rods had a hepatoprotective effect on male rats induced by isoniazid 350mg/kgBW for 14 days. The effective dose of ethanol extract of bajakah stem as a hepatoprotector was 200 mg/kgBW.Keywords: Bajakah tampala; hepatoprotector; isoniazid","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90351918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Indeks Pencemaran Lingkungan Sungai Wangi, Desa Beujeng, Kecamatan Beji, Kabupaten Pasuruan, Jawa Timur","authors":"M. A. Adam, Achmad Khumaidi, Ramli Ramli, Yenny Risjani, Agoes Soegianto","doi":"10.35799/jis.v22i1.36791","DOIUrl":"https://doi.org/10.35799/jis.v22i1.36791","url":null,"abstract":"Banyaknya limbah cair yang terbuang ke aliran Sungai Wangi memberikan potensi pencemaran. Pencemaran berasal dari limbah pabrik yang sudah berlangsung sejak tahun 2015. Tujuan dari penelitian yaitu untuk melakukan analisis kualitas lingkungan Sungai Wangi dan menentukan indeks pencemarannya. Metode penelitian dilakukan dengan metode survey dan Pengambilan sampel air sungai dilakukan di sekitar aliran sungai Wangi, Desa Beujeng, Kecamatan Beji, Kabupaten Pasuruan. Pengambilan sampel dilakukan pada 3 (tiga) area yaitu area industri, area pemukimam dan area pertanian. Penelitian dilakukan pada bulan Juni 2020 sampai dengan bulan Juli 2021. Hasil penelelitian menunjukkan adanya kontaminasi logam berat pada Sungai Wangi yang mengandung Pb, Cd dan Hg.  Kadar Pb, Cd dan Hg pada perairan rata-rata sebesar 0,031 ppm, 0,019 dan 0,009 ppm. Nilai tersebut sudah melampaui standar baku mutu PP 22/2021 kelas 3 yang diperbolehkan untuk aliran sungai. Sedangkan beberapa data parameter kualitas air lainnya dianalisis dengan menggunakan metode pollution index (PI). Metode ini digunakan untuk menentukan indeks pencemaran. Jumlah indeks pencemaran rata-rata (PIrata-rata)  pada Sungai Wangi secara umum (area industri, pemukiman dan pertanian) adalah = 5,503. Indeks pencemaran ini menunjukkan kondisi Sungai Wangi termasuk pada klasifikasi “cemar sedang”.Kata kunci: Indeks pencemaran; logam berat; sungai wangiEnvironmental Pollution Index of the Wangi River, Beujeng Village, Beji District, Pasuruan Regency, East Java ABSTRACTThe amount of liquid waste that is wasted into the Wangi River stream provides the potential for pollution. Pollution comes from factory waste that has been going on since 2015. The purpose of this research is to analyze the environmental quality of the Wangi River and determine its pollution index. The research method was carried out by survey methods and river water sampling was carried out around the Wangi river flow, Beujeng Village, Beji District, Pasuruan Regency. Sampling was carried out in 3 (three) areas, namely industrial areas, residential areas and agricultural areas. The study was conducted from June 2020 to July 2021. The results showed heavy metal contamination in the Wangi River containing Pb, Cd and Hg. The average levels of Pb, Cd and Hg in the waters were 0.031 ppm, 0.019 and 0.009 ppm. This value has exceeded the PP 22/2021 class 3 quality standard which is allowed for river flow. Meanwhile, several other water quality parameter data were analyzed using the pollution index (PI) method. This method is used to determine the pollution index. The number of the average pollution index (PI average) on the Wangi River in general (industrial, residential and agricultural areas) is = 5.503. This pollution index shows the condition of the Wangi River is included in the \"medium polluted\" classification.Keywords: Heavy metals; pollution index; wangi river","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83967023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variasi Konsentrasi Asam Borat pada Reaksi Amidasi Asam Sinamat dan Potensinya Sebagai Antikolesterol","authors":"Eka Susanti Hanhadyanaputri, Y. Purwaningsih, Erwin Indriyanti","doi":"10.35799/jis.v22i1.37492","DOIUrl":"https://doi.org/10.35799/jis.v22i1.37492","url":null,"abstract":"Tujuan penelitian ini yaitu untuk mengetahui reaksi amidasi asam sinamat dengan N, N-dietil amina menggunakan katalisator asam borat dan mengetahui aktivitas antikolesterol dari produk senyawa hasil amidasi.  Reaksi amidasi asam sinamat dengan N, N-dietil amina menggunakan variasi konsentrasi (% mol) asam borat sebagai katalis yaitu 5, 10, 15, 20 dan 25%. Hasil reaksi amidasi dikarakteristik menggunakan FT-IR, 1H-NMR dan 13C-NMR. Aktivitas antikolesterol dianalisis menggunakan metode Liebermann-Burchard. Hasil penelitian menunjukkan bahwa produk amidasi asam sinamat yaitu 20,47%, 22,99%; 23,37%; 26,77% dan 30,28% untuk variasi mol asam borat secara berturut-turut 5%, 10, 15, 20 dan 25%. Hasil karakterisasi dengan FT-IR, 1H-NMR dan 13C-NMR menunjukkan bahwa produk hasil amidasi berupa senyawa N, N-dietil sinamamida. Senyawa hasil amidasi mampu menurunkan kadar kolesterol sebesar 5,24%; 27,18% dan 13,22% dengan konsentrasi senyawa berturut-turut sebesar 50, 100, dan 150 ppm. Semakin besar persen mol katalisator asam borat yang digunakan, semakin besar senyawa hasil amidasi yang diperoleh. Produk hasil amidasi yang diperoleh yaitu senyawa N, N-dietil sinamamida yang berpotensi sebagai  antikolesterol dengan aktivitas optimum pada konsentrasi 100 ppm. Kata kunci: Amidasi; antikolesterol; asam borat; asam sinamat; sinamamida Mole Variation of Concentration Boric Acid in The Amidation Reaction  of Cinnamic Acid and Its Potential as Anticholesterol ABSTRACTThe aims of this study to determine the amidation reaction of cinnamic acid with N, N-diethylamine using a boric acid catalyst and to determine the anticholesterol activity of the amidation product. The amidation reaction of cinnamic acid with N, N-diethyl amine using various concentration (% mole) of boric acid as a catalyst, namely 5, 10, 15, 20, and 25%. The amidation reaction results were characterized using FT-IR, 1H-NMR, and 13C-NMR. The anticholesterol activity was analyzed using the Liebermann-Burchard method. The results showed that the amidation products of cinnamic acid were 20.47%, 22.99%; 23.37%; 26.77%, and 30.28% for variations in moles of boric acid 5%, 10, 15, 20, and 25%, respectively. The results of characterization using FT-IR, 1H-NMR and 13C-NMR showed that the amidation product was N, N-diethyl cinnamamide. The compound resulting from the amidation was able to reduce cholesterol levels by 5.24%; 27.18%, and 13.22% with compound concentrations of 50, 100, and 150 ppm, respectively. The greater the mole percent of boric acid catalyst used, the greater the amidation product obtained. The amidation product formed is N, N-diethyl cinnamamide which has the potential as an anticholesterol with optimum activity at a concentration of 100 ppm.Keywords: Amidation; anticholesterol; boric acid; cinnamic acid; cinnamamide","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77788230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kepadatan Populasi Cacing Tanah pada Perkebunan Kelapa Sawit di Desa Salang Tungir Kecamatan Namorambe","authors":"Jhon Kevin Purba, Rama R. Sitinjak, N. Agustina, Julaili Irni","doi":"10.35799/jis.v22i1.35703","DOIUrl":"https://doi.org/10.35799/jis.v22i1.35703","url":null,"abstract":"Penelitian ini bertujuan untuk menganalisis kepadatan populasi cacing tanah di perkebunan kelapa sawit dengan perbedaannya pada strata umur kelapa sawit di Desa Salang Tungir Kecamatan Namorambe.Metode yang digunakan adalah metode survey dengan teknik pengambilan sampel cacing tanah secara hand sorting pada stasiun I (TBM) dan stasiun II (TM). Analisis data untuk kepadatan hingga indeks nilai penting cacing tanah digunakan rumus tertentu, dan untuk  perbedaan kepadatan digunakan uji T. Hasil penelitian menunjukkan bahwa cacing tanah di perkebunan kelapa sawit TBM terdapat 3 jenis: Pontoscolex corethrurus, Pheretina sp., dan Lumbricus. Kepadatan relatif dan indeks nilai penting yang tertinggi ditemukan pada Pheretina sp. yaitu 36,09% dan 69,42%. Sedangkan pada TMterdapat 4 jenis: Pontoscolex corethrurus, Pheretina sp., Lumbricus, dan Microscolex. Kepadatan relatif dan indeks nilai pentingnya ditemukan pada Pontoscolex corethrurus yaitu secara berurut 30,56% dan 55,63%. Nilai kepadatan cacing tanah ditemukan lebih tinggi pada perkebunan kelapa sawit yang berumur 4 tahun.Kata kunci: Cacing tanah; Elaeis quineensis Jacq; kepadatan Earthworm Population Density in Oil Palm Plantation inSalang Tungir Village, Namorambe District ABSTRACTThis study aims to analyze the population density of earthworms in oil palm plantations with the differences in the age strata of oil palm in Salang Tungir Village, Namorambe District. The method used is survey method with earthworm sampling technique by hand sorting at station I (TBM) and station II (TM). Analysis of data for density to index of significance of earthworms used a certain formula, and for differences in density used the T test. The results showed that there are 3 types of earthworms in TBM oil palm plantations: Pontoscolex corethrurus, Pheretina sp., and Lumbricus. The highest relative density and significant value index were found in Pheretina sp, namely 36.09% and 69.42%, respectively. While in TM there are 4 types: Pontoscolex corethrurus, Pheretina sp., Lumbricus, and Microscolex. The relative density and significance index found in Pontoscolex corethrurus were 30.56% and 55.63%, respectively. Earthworm density values were found to be higher in oil palm plantations aged 4 years.Keywords: Earthworm; Elaeis quineensis Jacq; density","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74802150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Karakteristik Pektin Kulit Buah Sukun (Artocarpus altilis (Park.) Fosberg) dan Uji Kemampuan Adsorpsi Logam Berat pada Limbah Laboratorium Stifera Semarang","authors":"Khoirul Anwar, Mardiyono Mardiyono, Nuraini Harmastuti","doi":"10.35799/jis.v22i1.35537","DOIUrl":"https://doi.org/10.35799/jis.v22i1.35537","url":null,"abstract":"Uji karakteristik pektin kulit buah sukun (Artocarpus altilis (Park.) Fosberg) dan uji kemampuan adsorpsi logam berat pada limbah laboratorium stifera Semarang. Tujuan penelitian ini yaitu menentukan kondisi optimum pektin kulit buah sukun dalam menyerap ion Pb2+ dan Cd2+ terhadap parameter variasi berat, lama waktu kontak, pH dan ukuran partikel serta menentukan persentase penurunan kadar ion Pb2+ dan Cd2+ pada limbah cair laboratorium farmasi. Metode isolasi pektin dilakukan dengan menggunakan metode konvensional dan dilakukan pengujian karakteristik pektin yaitu uji kadar air, kadar abu, berat ekivalen, kadar metoksil, kadar galakturonat, derajat esterifikasi, identifikasi FTIR dan GC-MS. Uji kemampuan adsorpsi logam berat dengan 4 variasi optimasi yaitu berat pektin yaitu 100, 300 dan 500 mg; lama waktu kontak 30, 60, 90 dan 120 menit; pH 4, 5, 6 dan 7; variasi ukuran partikel 80, 100 dan 120 mesh, metode analisis menggunakan alat spektrofotometri serapan atom. Hasil penelitian menunjukkan  bahwa berat optimum terjadi pada 500 mg, lama waktu kontak 90 menit, pH 5 dan ukuran partikel 120 mesh baik ion Pb2+ dan Cd2+. Hasil tersebut diaplikasikan pada limbah laboratorium farmasi dan didapatkan rata-rata persentase penurunan ion logam Pb2+90,53% dan ion Cd2+ 91,51%.Kata kunci: Adsorpsi; kulit buah sukun; pektinCharacteristics of Breadfruit Peel Pectin (Artocarpus altilis (Park.) Fosberg) and Ability Test of Heavy Metal Adsorption in Waste Stifera Laboratory SemarangABSTRACTCharacteristic test of pectin of breadfruit peel (Artocarpus altilis (Park.) Fosberg) and test of heavy metal adsorption ability in laboratory waste Stifera Semarang. The aim of this study was to determine the optimum conditions for pectin to absorb Pb2+ and Cd2+ ions on the parameters of weight variation, contact time, pH and particle size and to determine the percentage decrease in Pb2+ and Cd2+ ion levels in pharmaceutical laboratory wastewater. Pectin isolation method was carried out using conventional methods and the characteristics of pectin were tested, namely water content, ash content, equivalent weight, methoxyl content, galacturonic content, esterification degree, FTIR identification, GC-MS. Heavy metal adsorption ability test with optimization variations, namely the weight of pectin is 100, 300, 500 mg; length of contact time 30, 60, 90, 120 minutes; pH 4, 5, 6, 7; variation of particle size 80, 100, 120, analytical method using atomic absorption spectrophotometry. The results showed that the optimum weight occurred at 500 mg, contact time of 90 minutes, pH 5 and particle size of 120 both Pb2+ and Cd2+ ions. These results were applied to pharmaceutical laboratory waste and the average percentage reduction of metal ions Pb2+ was 90.53% and Cd2+ ions were 91.51%.Keywords: Adsorption; breadfruit peel; pectin","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90888998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Clustering K-Medoids Berdasarkan Indikator Kemiskinan di Jawa Timur Tahun 2020","authors":"Febiyanti Alfiah, Almadayani Almadayani, Danial Al Farizi, Edy Widodo","doi":"10.35799/jis.v22i1.35911","DOIUrl":"https://doi.org/10.35799/jis.v22i1.35911","url":null,"abstract":" Keberadaan pandemi COVID-19 di Indonesia, mengakibatkan kemiskinan di Indonesia semakin tinggi terutama di Jawa Timur yang menjadi satu diantara provinsi lain dengan kasus COVID-19 tinggi di Indonesia. Tujuan penelitian ini yaitu mengetahui pengelompokan kabupaten/kota di Jawa Timur yang mempunyai kesamaan karakteristik berdasarkan indikator kemiskinan tahun 2020. Penelitian ini menggunakan data yang didapatkan dari Badan Pusat Statistik. Metode yang digunakan ialah metode k-medoids clustering yang merupakan metode partisi clustering guna pengelompokan n objek ke dalam k cluster. Berdasarkan hasil penelitian, diperoleh pengelompokan karakteristik masing-masing cluster yang dibentuk berdasarkan nilai indikator kemiskinan di Jawa Timur tahun 2020 sebanyak 2 cluster. Dimana 30 kabupaten/kota pada cluster 1 dan dan 8 kabupaten/kota pada cluster 2. Cluster 1 memiliki karakteristik Persentase Rumah Tangga yang Mempunyai Sanitasi Layak, Angka Harapan Hidup, dan Persentase Angka Melek Huruf Umur 15-55 Th tinggi. Sedangkan cluster 2 memiliki karakteristik Persentase Rumah Tangga Miskin Penerima Raskin, Persentase Penduduk Miskin, dan Persentase Pengeluaran Perkapita untuk Makanan dengan Status Miskin tinggi. Kata kunci: Clustering; Jawa Timur; K-medoids; kemiskinan  K-Medoids Clustering Analysis Based on Poverty Indicators in East Java in 2020 ABSTRACT The existence of the pandemic COVID-19 in Indonesia has resulted in higher poverty in Indonesia, especially in East Java, which is one of the other provinces with high cases in Indonesia. The purpose of this study is to find out the grouping of regencies/cities in East Java that have similar characteristics based on the poverty indicators in 2020. This study uses data obtained from the Badan Pusat Statistik. The method used is k-medoids clustering method which is a clustering partition method for grouping n objects into k clusters. Based on the results of the study, it was found that the grouping of the characteristics of each cluster formed based on the value of the poverty indicator in East Java in 2020 was 2 clusters. Where 30 regencies/cities in cluster 1 and and 8 regencies/cities in cluster 2. Cluster 1 has the characteristics of the percentage of households that have proper sanitation, life expectancy, and a high percentage of literacy rates aged 15-55 years. While cluster 2 has the characteristics of the percentage of poor households receiving Raskin, the percentage of poor people, and the percentage of per capita expenditure on food with high poor status. Keywords: Clustering; East Java; K-Medoids; poverty","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87959964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efektivitas Antioksidan dari Ekstrak Bunga Kasumba Turate (Carthamus tinctorius L.) dan Potensinya Sebagai Antihiperkolesterolemia","authors":"Juwita Wita Yasir, L. Momuat, Julius Pontoh","doi":"10.35799/jis.v21i2.32555","DOIUrl":"https://doi.org/10.35799/jis.v21i2.32555","url":null,"abstract":"Telah dilakukan penelitian untuk menganalisis kandungan metabolit sekunder dan efektivitas antioksidan dari ektrak etanol bunga kasumba turate (Carthamus tinctorius L.), serta potensinya sebagai antihiperkolesterolemia. Bunga kasumba turate yang telah dikeringanginkan, dihaluskan dan dimaserasi dengan pelarut etanol 70%, lalu dievaporasi pelarutnya. Ekstrak etanol (EE) yang diperoleh dipartisi berturut-turut dengan pelarut n-heksana, etil asetat dan air, sehingga diperoleh ekstrak fraksi n-heksana (FH), etil asetat (FEA) dan air (FA). Selanjutnya, EE, FH, FEA, dan FA diuji kandungan metabolit sekundernya (metode Harborne) dan efektivitas antioksidannya (metode DPPH). Hasil penelitian menunjukkan bahwa EE dan FEA mengandung alkaloid, fenolik, flavonoid, saponin, tanin dan triterpenoid. FA mengandung fenolik, flavonoid, saponin, tanin dan triterpenoid. FH mengandung alkaloid, flavonoid dan triterpenoid. Efektivitas antioksidan bunga kasumba turate (dinyatakan dalam IC50) yang tertinggi pada FEA, diikuti FH, FA dan EE, dengan nilai IC50 53,59, 75,45, 77,43, dan 89.,9 µg/mL. Hasil kajian menunjukkan bahwa bunga kasumba turate dapat menghambat oksidasi LDL dan menurunkan kadar kolesterol darah. Penelitian ini menyimpulkan bahwa ekstrak bunga kasumba turate memiliki efektivitas antioksidan yang kuat dan efek antihiperkolesterolemia.Kata kunci: Antihiperkolesterolemia; antioksidan; Carthamus tinctorius L.; etanolAntioxidant Effectiveness of Kasumba Turate Flower Extract (Carthamus tinctorius L.) and Its potential as an AntihypercholesterolemiaABSTRACTResearch has been carried out to analyze the secondary metabolite content and antioxidant effectiveness of the ethanol extract of kasumba turate flower (Carthamus tinctorius L.), as well as its potential as antihypercholesterolemia. Kasumba turate flowers that have been dried and mashed, macerated with 70% ethanol solvent, then evaporated the solvent. The ethanol extract (EE) obtained was partitioned successively with n-hexane, ethyl acetate and water as solvents, so that the extracts of the n-hexane (FH), ethyl acetate (FEA) and water (FA) fractions were obtained. Furthermore, EE, FH, FEA, and FA were tested for their phytochemical content (Harbourne method) and antioxidant effectiveness (DPPH method). The results showed that EE and FEA contained alkaloids, phenolics, flavonoids, saponins, tannins and triterpenoids. FA contains phenolics, flavonoids, saponins, tannins and triterpenoids. FH contains alkaloids, flavonoids and triterpenoids. The antioxidant effectiveness of casumba turate flower (expressed in IC50) was highest in FEA, followed by FH, FA and EE, with IC50 values of 53,59, 75,45, 77,43, and 89,19 g/mL, respectively. The results of the literature review show that kasumba turate flowers can inhibit LDL oxidation and reduce blood cholesterol levels. This study concluded that kasumba turate flower extract has a strong antioxidant effectiveness and antihypercholesterolemic effect.Keywords: Antihyper","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77491206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Persediaan Karton dengan Metode Economic Order Quantity (EOQ) (Studi Kasus: PT. Asegar Murni Jaya, Minahasa Utara)","authors":"Therechia A.F. Soares, C. Montolalu, Tohap Manurung","doi":"10.35799/jis.v21i2.30013","DOIUrl":"https://doi.org/10.35799/jis.v21i2.30013","url":null,"abstract":"Karton merupakan salah satu bahan baku pembantu yang digunakan dalam produksi Air Mineral dalam Kemasan. Menurut beberapa penelitian Metode EOQ digunakan untuk menganalisa persediaan. Tujuan penelitian ini yaitu untuk menentukan jumlah pemesanan ekonomis menggunakan metode Economic Order Quantity (EOQ) dan pengoptimalan biaya yang dapat dilakukan dengan metode EOQ.  Penelitian ini dilakukan pada bulan November 2019 hingga Januari 2020 di perusahaan PT. Asegar Murni Jaya. Variabel yang digunakan yaitu frekuensi kebutuhan karton, biaya pemesanan bahan baku dan biaya penyimpanan bahan baku.  Hasilnya menunjukkan bahwa pemesanan ekonomis menurut metode EOQ untuk karton dengan biaya optimal sebesar  unit untuk periode November 2017 – Oktober 2018 dan unit untuk periode November 2018 – Oktober 2019. Terjadi penghematan dalam biaya persediaan untuk periode November 2017 – Oktober 2018 sebesar  dan untuk periode November 2018 – Oktober 2019 sebesar .Kata kunci: Economic Order Quantity;  karton;  persediaan Carton Inventory Analysis Using the Economic Order Quantity (EOQ) Method (Case Study: PT. Asegar Murni Jaya, Minahasa Utara)ABSTRACTCarton is one of the supporting raw materials used in the production of bottled  or glass mineral water. Based on some research, for analyzed inventory will be used  Economic Order Quantity (EOQ) Method. The purpose of this research was to determine the amount of economic order using Economic Order Quantity (EOQ). This research was conducted in November 2019 until January 2020 at PT. Asegar Murni Jaya. Variables used i.e the frequency of carton demand, ordering cost and holding cost.  The results show that it can be seen that economical order according to EOQ method cartons is  pcs for November 2017 – October 2018 periode and for November 2018 – October 2019 periode. There were savings in inventory costs for the period November 2017 - October 2018 amounting to  and for the period November 2018 - October 2019 amounting to .Keywords : Carton; Economic Order Quantity; inventory","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86210491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}