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INDONESIA
Jurnal Penelitian Sains
Published by Universitas Sriwijaya
ISSN : 14107058     EISSN : 25977059     DOI : 10.26554
Core Subject : Science, Education,
Chemistry Mathematics Physics
Jurnal Penelitian Sains (JPS) MIPA UNSRI merupakan wahana komunikasi ilmiah di bidang sains serta lintas ilmu yang terkait; diterbitkan sejak 1 Oktober 1996 oleh UP2M FMIPA Universitas Sriwijaya. Jurnal ini berisikan tulisan atau karangan ilmiah dalam berbagai bidang tersebut yang diangkat dari hasil penelitian, survei, atau telaah pustaka, yang belum pernah dipublikasikan dalam terbitan lain.
Arjuna Subject : -
Articles 7 Documents
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Search results for , issue "Vol 22, No 1 (2020)" : 7 Documents clear
Translokasi Asimilat Pada Anggrek Akar Veren Yuliana Saputri; Ratis Nour Sholichah; Lailatus Solichah; Muhammad Ainun Najah; Mukhamad Su'udi
Jurnal Penelitian Sains Vol 22, No 1 (2020)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (393.227 KB) | DOI: 10.56064/jps.v22i1.553

Abstract

Anggrek akar hidup pada habitat lembab dan bersifat epifit. Anggrek yang juga dikenal sebagai anggrek hantu ini, memiliki ciri khusus yaitu akar yang berfungsi sebagai organ source. Salah satu contoh anggrek akar adalah Taeniophyllum biocellatum. Akarnya berwarna hijau, memiliki velamen, dan berkas pembuluh yang memainkan peran penting dalam proses translokasi hasil asimilat. Proses translokasi asimilat dimulai dari sel produsen menuju sieve element dan berakhir di organ sink. Tipe pengangkutan simplasmik dan apoplasmik didasarkan pada ada atau tidaknya saluran plasmodesmata. Senyawa yang terkandung dalam fotosintat meliputi zat organik seperti sukrosa, hormon, dan protein sedangkan senyawa anorganik meliputi air, mineral, nitrogen, dan lainnya. Alokasi dan proporsi fotosintat disesuaikan pada kebutuhan dominan pertumbuhan dan perkembangan anggrek akar.
Pemanfaatan Ubi Jalar (Ipomoea Babatas, L.) Menjadi Sirup Glukosa Dengan Hidrolisis Asam Lukhi Mulia Shitophyta; Den S. B. Ardiansyah; Muhammad Rizky Nendanov
Jurnal Penelitian Sains Vol 22, No 1 (2020)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.658 KB) | DOI: 10.56064/jps.v22i1.559

Abstract

Ubi jalar (Ipomea Babatas, L.) merupakan tanaman umbi yang mengandung karbohidrat, kalsium dan pati. Selain dikonsumsi sebagai bahan pangan, ubi jalar jug bisa digunakan sebagai bahan baku pembuatan sirup glukosa. Penelitian ini bertujuan untuk mengkaji pengaruh waktu hidrolisis dan volume HCl terhadap produksi glukosa. Pati diekstrak dari ubi jalar kemudian diendapkan selama 1 jam. Produksi sirup glukosa dilakukan dengan metode hidrolisis asam pada suhu 100°C. Hasil penelitian menunjukkan kadar glukosa tertinggi sebesar 62,75% diperoleh pada waktu hidrolisis 30 menit dan volume 15 ml HCl. Kadar glukosa terendah dihasilkan pada waktu hidrolisis terlama. Semakin besar volume HCl, semakin kecil kadar glukosa yang diperoleh.
Isolasi dan aktivitas antibakteri jamur endofit pada mangrove Sonneratia alba dari Tanjung Carat Kabupaten Banyuasin Sumatera Selatan Anna Heirina; Rozirwan Rozirwan; Muhammad Hendri
Jurnal Penelitian Sains Vol 22, No 1 (2020)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (534.984 KB) | DOI: 10.56064/jps.v22i1.562

Abstract

S. alba is a mangrove that is commonly found on the east coast of Banyuasin. Endophytic fungus can produce a functional compound e.g antibacterial. The purpose of this study is to determine the type, the increase in diameter of colonies and the antibacterial potential in endophytic fungus of S. alba. The research method used were by the isolation of endophytic fungus from leaf, stem and root, the identification of endophytic fungus, the measurement of colony diameter in endophytic fungus and antibacterial activity test using paper disc method. The results of this study found the two genera of endophytic fungus with four species of Aspergillus sp1., Aspergillus sp2., Paecilomyces sp1., and Paecilomyces sp2. The increase in diameter for each colony of endophytic fungus shows the difference every day. Aspergillus sp1. The exponential phase has been visible on the third day with an average diameter increase of 33.70 mm / day. The exponential phase of Aspergillus sp2 was visible on the third day with an diameter increase of 37.74 mm/day. In the endothelium fungi Paecilomyces sp1, the exponential phase was visible on the third day to the seventh day with diameter increase of 13.57 mm/day to 38.07 mm/day. Exponential phase of Paecilomyces sp2. was visible on the third day to the sixth day with diameter increase of 25.25 mm/day to 75.21 mm/day. These four types of endophytic fungus are resistant to bacteria E. coli and S. aureus. Aspergillus sp2. endophytic fungus has the highest inhibitor potency of 14.49 mm in E. coli bacteria. The endophytic fungus Paecilomyces sp2. inhibits bacterial growth of S. aureus with the highest inhibitory potency of 11.61 mm.
Uji Aktivitas Antibakteri Kombinasi Ekstrak Etanol Daun Seledri (Apium graviolens L.) Dan Madu Hutan Terhadap Beberapa Bakteri Penyebab Penyakit Kulit Masayu Azizah; Lara Septy Lingga; Yopi Rikmasari
Jurnal Penelitian Sains Vol 22, No 1 (2020)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (797.144 KB) | DOI: 10.56064/jps.v22i1.547

Abstract

Telah dilakukan uji aktivitas antibakteri dari ekstrak etanol daun seledri (Apium graviolens L.) dan madu hutan terhadap bakteri penyebab penyakit kulit yaitu Staphylococcus aureus ATCC 25923, Streptococcus pyogenes ATCC 19615, Propionibacterium acnes ATCC 11827, Pseudomonas aeruginosa ATCC 27853, Sreptococcus β hemoliticus ATCC 19615. Ekstraksi dilakukan dengan cara maserasi menggunakan pelarut etanol destilat. pengujian aktivitas antibakteri dilakukan dengan menggunakan metode difusi agar dengan konsentrasi zat uji yaitu 70%:30%, 60%:40% dan 50%:50% dengan menggunakan etanol destilat sebagai kontrol negatif dan kloramfenikol sebagai kontrol positif. Hasil penelitian menunjukkan daya hambat ekstrak pada konsentrasi 70%:30% pada masing-masing bakteri uji yaitu Staphylococcus aureus ATCC 25923  sebesar 17 mm, Streptococcus pyogenes ATCC 19615 sebesar 18,6 mm, Propionibacterium acnes ATCC 11827 sebesar 17,9 mm, Pseudomonas aeruginosa ATCC 27853 sebesar 18,6 mm, Sreptococcus β hemoliticus ATCC 19615 sebesar 16,15 mm. hasil penelitian menunjukkan bahwa ekstrak etanol daun seledri dan madu hutan memiliki aktivitas antibakteri terhadap bakteri infeksi kulit dalam kategori kuat
Effects of Fiber Consumption in Lowering Cholesterol Level Brigitta Olivia Sinulingga
Jurnal Penelitian Sains Vol 22, No 1 (2020)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (335.545 KB) | DOI: 10.56064/jps.v22i1.556

Abstract

High cholesterol is one of the risk factor for non-communicable disease such as the formation of artherosclerosis and metabolic disease. The number of non-communicable disease continue to increase and becomes one of the health problems in the world including Indonesia. community eating habbit that changed for the worse with the times are one of the biggest reason why the number of deaths for non-communicable diseases continues to increase. there are efforts that can be made to prevent the condition of hypercholesterolemia, a state of disturbance of blood fat levels of more than 240 mg / dl is to modify the lifestyle with a high-fiber diet. There are so many health benefits that can be obtained from eating dietary fiber. In addition to lowering cholesterol, dietary fiber can also increase insulin sensitivity, stimulate reducing blood glucose diffusion, hormonal effects by decreasing insulin secretion, increasing fat oxidation, and reducing fat storage due to increased satiety. Therefore, the adequacy of food fiber intake in the daily diet is very important. According to Southgate daily fiber intake is 16-28 g / day. Whereas the Dietary Guidlenes of American recommend consuming foods containing fiber and starch in amounts of 20-35 g / day
Perbandingan Antioksidan Ekstrak Etanol Daun Gaharu (Aqularia malaccensis L.) dan Ketiga Fraksi Berbagai Pelarut (Heksan, Etil Asetat, dan Air) Mauizatul Hasanah Hasanah; Deby Apriyanti; Dewi Patmayuni
Jurnal Penelitian Sains Vol 22, No 1 (2020)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (475.648 KB) | DOI: 10.56064/jps.v22i1.552

Abstract

Telah dilakukan penelitian perbandingan antioksidan ekstrak etanol daun gaharu (Aquilaria malaccensis L.) dan ketiga fraksi-nya dari berbagai pelarut (heksan, etil asetat dan air). Ekstraksi dilakukan dengan metode maserasi terhadap 350 gram serbuk daun gaharu menggunakan pelarut etanol 70%, kemudian dilakukan fraksinasi terhadap ekstrak kental menggunakan pelarut heksan, etil asetat dan aquadest. Hasil ekstraksi diperoleh rendemen ekstrak kental 3,57 (%b/b), sedangkan hasil fraksinasi diperoleh fraksi heksan, etil asetat dan air berturut-turut adalah  43,14; 32,67; 22,20 (%b/b). Uji antioksidan dilakukan dengan metode DPPH (Difenilpikril hidrazil), dimana nilai penghambatan DPPH (% inhibisi) di uji pada berbagai konsentrasi larutan uji sampel, untuk ekstrak kental dilakukan pada konsentrasi 80; 60; 40; 20; 10 ppm, dan sampel fraksi pada konsentrasi 200; 160; 120; 80; 40 ppm.  Intensitas aktivitas antioksidan sampel ditentukan dari nilai IC50, yang diperoleh dari persamaan garis lurus antara konsentrasi sampel uji dan % inhibisi. Hasil perhitungan IC50 menunjukkan aktivitas antioksidan yang tergolong sangat kuat pada ekstrak kental dan fraksi etil asetat yaitu 16,45 dan 47,69 ppm, dan antioksidan kuat terdapat pada fraksi N-heksan dan fraksi air yaitu 57,24 dan 76, 95 ppm.
Validasi Metode Pengujian Amonia Menggunakan Metode Uji Cepat Hanna HI 96733 Siti Nuraini; Hanida Yanti
Jurnal Penelitian Sains Vol 22, No 1 (2020)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.455 KB) | DOI: 10.56064/jps.v22i1.554

Abstract

Validation of ammonia testing methods using the Hanna HI 96733 rapid test method has been performed. Hanna HI 96733 rapid test method has advantages that cost more economical because using only 2 reagents and more practical, the number of sample volume used relatively little so that the waste produced is also less, the analysis is easier and faster. The validation parameters that are performed are test linearity, Method Detection Level (MDL), precision test and accuracy test, so that the method can be known is valid or not. Ammonia testing with HI 96733 has linearity (r) 0.9993 for concentration range 5 – 50 ppm, MDL of 0.4752 ppm, precision of 5.2505% and accuracy of 100.48%. The rapid test method of Hanna HI 96733 can be used as a method of testing ammonia in LPT FMIPA because it meets all the acceptance limits.

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