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Jambura Journal of Chemistry
Published by Universitas Negeri Gorontalo
ISSN : 26563665     EISSN : 26566834     DOI : 10.34312/jambchem
Core Subject : Science,
Chemistry
Jambura Journal of Chemistry is peer-reviewed and open access journal published by Chemistry Depertment, Faculty Mathematic and Natural Science. Jam.J.Chem that publishes original research articles, review articles, as well as short communication in all areas of chemistry including applied chemistry. Jambura Journal of Chemistry publish two issues (numbers) annually (February and August).
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Articles 8 Documents
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Search results for , issue "Vol 7, No 1 (2025): February" : 8 Documents clear
Ekstrak Getah Merkubung (Macaranga gigantea) Sebagai Inhibitor Korosi Yang Ramah Lingkungan Pada Baja Lunak Dalam Media Air Gambut Prasetio, Muhamad Reza; Pradina, Armitha Dea; Gusti, Diah Riski; Susanto, Nindita Clourisa Amaris
Jambura Journal of Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v7i1.15714

Abstract

Pemanfaatan baja lunak dalam industri sebagai alat kontruksi dan transportasi karena baja memiliki banyak manfaat antara lain kokoh, mudah digunakan dan sederhana. Namun, baja rentan terkena korosi karena berinteraksi dengan kondisi lingkungan asam, alkali , dan lingkungan agresif lainnya. Ekstrak getah merkubung (Macaranga gigantea) dipilih sebagai inhibitor korosi karena mengandung senyawa metabolit sekunder, salah satunya yaitu tanin. Tujuan dari penelitian ini untuk manganalisis pengaruh konsentrasi ekstrak terhadap laju korosi, efisiensi dalam media air gambut. Metode pengujian yaitu metode kehilangan berat, dimana laju korosi tertinggi pada suhu 333 K dengan konsentrasi 0,5 g/L adalah 0,555 g/cm^2.jam. Sedangkan nilai efisiensi sebesar 67,196 % pada suhu 333 K dengan konsentrasi 2,5 g/L. Analisis yang digunakan pada penelitian ini yaitu Analisis Scanning Electron Microscopy/ Energy Dispersive X-Ray (SEM-EDX) dan Analisis Fouriere Transformi Infra Red (FTIR).
Isolasi, Karakterisasi dan Uji Daya Hambat Mikroba Endofit Tanaman Lidah Mertua (Sansevieria trifasciata) terhadap Bakteri Escherichia Coli dan Staphylococcus Aureus Pakaya, Mahdalena Sy.; Abas, Siti Nur Rahmatiya; Thomas, Nur Ain
Jambura Journal of Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v7i1.12436

Abstract

Mikroba endofit merupakan mikroorganisme yang hidup pada jaringan tanaman tanpa merusak atau mengganggu kelangsungan hidup dari tanaman tersebut. Selain dapat membantu proses metabolisme, mikroba endofit juga dapat menghasilkan senyawa metabolit sekunder yang sama seperti inangnya. Penelitian ini bertujuan untuk mengisolasi mikroba endofit yang terdapat pada tanaman lidah mertua (Sansevieria trifasciata) dan menguji daya hambat mikroba endofit tersebut terhadap bakteri patogen Escherichia coli dan Staphylococcus aureus. Metode yang digunakan pada tahap isolasi adalah metode tanam langsung sehingga dapat terlihat jelas mikroba endofit yang keluar dari jaringan tumbuhan; tahap karakterisasi secara makroskopik dan mikroskopik; tahap uji daya hambat menggunakan metode difusi cakram (Kirby-Bauer). Jumlah mikroba yang berhasil diisolasi sebanyak 4 isolat; A1 dan A2 (isolat bakteri), B1 dan B2 (isolat jamur). Berdasarkan hasil karakterisasi secara makroskopik dan mikroskopis, keempat mikroba tersebut menunjukkan karakteristik yang berbeda. Hasil uji daya hambat berdasarkan diameter zona bening menunjukkan rata-rata zona hambat dengan kategori lemah-sedang terhadap kedua bakteri patogen. Hasil uji daya hambat oleh mirkoba endofit terhadap kedua bakteri patogen dianalisis secara One Way Anova dengan taraf kepercayaan 99% (α=0,01). Hasil analisis data menujukkan bahwa kedua bakteri patogen Escherichia coli dan Staphylococcus aureus sama-sama dapat dihambat pertumbuhannya oleh mikroba endofit dengan karena p=0,704 (sig.a).
Fermentasi Jerami Padi Dengan Berbagai Probiotik Terhadap Kandungan Selulosa, Hemiselulosa Dan Lignin Bahri, Syamsul
Jambura Journal of Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v7i1.20502

Abstract

ABSTRACT Utilization of rice straw is one way of addressing the demand for ruminant feed, and requires management before it is used for livestock through suffering. This study aims to determine the content of cellulose, hemicellulose and lignin fermented rice straw with various probiotics This research aimed to determine the contents of cellulose, hemicellulose, and lignin in rice straw fermented with various probiotics. It employed a completely randomized design (CRD) with five treatments and three replications. The treatments consisted of: PO = 90% rice straw + 10% concentrate, P1 = 90% rice straw + 10% concentrate + Bio EM+ probiotic, P2 = 90% rice straw + 10% concentrate + starbio probiotic, P3 = 90% rice straw + 10% concentrate + win prob probiotic, P4 = 90% rice straw + 10% concentrate + a combination of probiotics (Bio EM+, starbio and win prob). Furthermore, the parameters measured were the contents of cellulose, hemicellulose, and lignin. The findings depicted that the treatment had a highly significant effect (P
Analisis Fitokimia dan Uji Aktivitas Antioksidan Ekstrak Etanol Kulit Batang Alpukat Mentega (Persea Americana Mill) Chusnah, Hudallil; Hafshah, Mutista
Jambura Journal of Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v7i1.21182

Abstract

Lack of physical activity, fast food products, and increased stress due to work pressures are all dangers that might induce unnoticed changes in the body that can lead to degenerative diseases. The existence of free radicals, which can cause cancer and damage cells in the body, might trigger the emergence of degenerative disorders. Antioxidants can help to prevent degenerative disorders caused by the presence of free radicals. The purpose of this study is to investigate the yield percentage, secondary metabolite chemicals, and the IC50 value of the antioxidant activity of butter avocado stem bark (Persea americana Mill). The maceration method is used in the extraction of avocado butter bark. The obtained extraction results give as much as. Flavonoids, tannins, saponins, and alkaloids are among the secondary metabolites found in butter avocado stem bark. The antioxidant activity was then determined using the DPPH (2,2-diphenyl-1-picryhidrazil) technique. The ethanol extract of avocado butter stem bark exhibited an IC50 value of 137.81 ppm, indicating that it was a natural product with moderate antioxidant activity that may be exploited as a natural antioxidant source.
Analisis Keberadaan Mikroplastik Pada Air dan Sedimen Di Danau Limboto Basalama, Muhamad Tri Rezki; Kunusa, Wiwin Rewini; Suleman, Nita
Jambura Journal of Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v7i1.28765

Abstract

This study aims to identify the type and abundance of microplastics in water and sediment in Lake Limboto. Sampling was conducted at four points using purposive sampling method. Analysis of the type and abundance of microplastics was carried out with a binocular microscope (4×10 magnification) and FT-IR spectroscopy. The results showed the presence of three types of microplastics based on shape, namely fiber, film, and fragment, as well as two types of polymers, namely polyvinyl chloride and polyamide. The total abundance of microplastics in water samples was 940 particles/m³, with the highest abundance at point 2 (290 particles/m³) and the lowest at point 1 (170 particles/m³). In sediment samples, the total abundance of microplastics was 2400 particles/kg, with the highest abundance at point 2 (660 particles/kg) and the lowest at point 1 (540 particles/kg). These results show significant distribution and variation of microplastic abundance in Lake Limboto.
Efektivitas antibakteri cuka sari apel terhadap pertumbuhan bakteri Escherichia coli dan Staphylococcus aureus secara in vitro Aryasa, I Wayan Tanjung; Artini, Ni Putu Rahayu
Jambura Journal of Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v7i1.15433

Abstract

The chemical name for vinegar is acetic acid, which is derived from the Latin word acetum. Acetic acid, ethane acid, or vinegar is a chemical compound of organic acids and is the most important carboxylic acid in commerce, industry and laboratories known as acidity. And the taste of food. However, keep in mind that vinegar can act as a disinfectant. A well-known type of vinegar is apple cider vinegar. With the above background in mind, this study formulates the question of how apple cider vinegar inhibits the growth of E. coli and Staphylococcus aureus. The analysis of this study was performed in the form of a quasi-experimental experiment, ie by comparing the inhibitory power of apple cider vinegar with the control of Escherichia coli and Staphylococcus aureus growth, and the design of a pure control group after the test. Thing. Based on the results of the studies conducted, the diameters of the inhibition zones formed in Escherichia coli of foreign apple cider vinegar, Indonesian apple cider vinegar, and local apple cider vinegar are 12.33 ± 0.12 mm, 2.21 ± 0.12 mm. It is shown that. And 7.42 ± 0.09 mm. The diameters of the inhibition zones formed on the yellow staphylococci of foreign apple cider vinegar were 14.56 ± 0.46 mm, 0.00 ± 0.00 mm and 10.36 ± 0.27 mm for Indonesian apple cider vinegar and local apple cider vinegar, respectively. Hmm. From this, we can conclude that apple cider vinegar has an antibacterial effect against Escherichia coli and Staphylococcus aureus.
Analisis Status Mutu Air Sungai Buol di Kabupaten Buol dengan Metode Indeks Pencemaran Mariani, Mimi; Lihawa, Fitryane; Machmud, Marike
Jambura Journal of Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v7i1.17351

Abstract

This study aims to analyze the water quality status of the Buol River using the Pollution Index (IP) method. The location of the study area includes the Buol River, with a length of 60.3 km. There are 8 locations for sampling the Buol River water. Determining the location of river water sampling is done by the purposive sampling method. Location criteria are determined based on pollutant sources, namely agricultural waste, domestic waste, and industrial waste. Water quality parameters analyzed were temperature, TDS, TSS, pH, BOD, COD, DO, Nitrate, Nitrite, Ammonia, Chlorine, Sulfide, Phosphate, Surfactant, Fatty Oil, Phenol, and Total Coliform. The river water quality standard used is Republic of Indonesia Government Regulation Number 22 of 2021 Appendix VI. The analysis method for the water quality status of the Buol River is determined by the pollution index method. The results of the quality analysis of the Buol River on the parameters TSS, COD, Nitrite, Chlorine, Sulfide, and Phenol have exceeded the quality standards. The results of the analysis of the water quality status using the Pollution Index (IP) method obtained the Buol River water pollution index at sample point 2 was 3,94 (lightly polluted water quality status). The pollution index value at sample point 1 is 5.16 (moderately polluted). The pollution index value at sample point 3 is 5.24 (moderately polluted). The pollution index value at sample point 4 is 8.03 (moderately polluted). The pollution index value at sample point 5 is 7.36 (moderately polluted). The pollution index value at sample point 6 is 7.73 (moderately polluted). The pollution index value at sample point 7 is 7.40 (moderately polluted). The pollution index value at sample point 8 is 7.79 (moderately polluted).
Pembuatan dan Karakterisasi Selulosa Dari Limbah Kulit Buah Nanas (Ananas Comosus L.) Sebagai Adsorben Zat Warna Remazol Yellow Lestari, Intan; Permana, Edwin; Hidayat, Dara Shalsa Billah
Jambura Journal of Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v7i1.15561

Abstract

Remazol Yellow is a dye that contains an basic amino group and a benzene core, so it is difficult to be naturally degraded by microorganisms and causes environmental pollution. One solution to reduce the dye waste polluted in waters can be done by adsorption method using pineapple peel cellulose as adsorbent. Before turning into pineapple peel cellulose, the NaOH delignification process and H2SO4 hydrolysis were carried out first. The adsorption process for rhodamine B dye was carried out on 2 parameters, namely pH, contact time and determination of the adsorption system using the Langmuir and Freundlich equations at various concentrations of 5, 10, 15, 20, 25, 50, 75 and 100 ppm. Testing the effect of pH on the adsorption of Remazol Yellow was carried out with variations in pH namely 2, 3, 4, 5, 6, 7 and 8. . The results showed the optimum conditions at pH 2, contact time of 30 minutes and the Langmuir isotherm adsorption system with an adsorption capacity of 19.888 mg/g

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