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Sudarningsih
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Jurnal Natural Scientiae
Published by Universitas Lambung Mangkurat
ISSN : -     EISSN : 28099796     DOI : DOI: https://doi.org/10.20527/jns.v2i1
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Immunology & microbiology Materials Science & Nanotechnology Physics
Jurnal Natural Scientiae (JNS), ISSN:2809-9796 (online) adalah sebuah jurnal blind peer review yang didedikasikan untuk publikasi hasil penelitian yang berkualitas dalam bidang IPA namun tak terbatas secara implisit. Semua publikasi di jurnal Natural Scientiae bersifat akses terbuka yang memungkinkan artikel tersedia secara bebas online tanpa berlangganan apapun. Jurnal Natural Scientiae dikelola secara profesional dan diterbitkan oleh FMIPA ULM dalam membantu mahasiswa, akademisi, peneliti dan praktisi untuk menyebarkan hasil penelitiannya. Jurnal Natural Scientiae merupakan media publikasi yang sangat peduli terhadap perkembangan dan inovasi-inovasi pada bidang IPA terutama bidang biologi, kimia dan fisika Indonesia. Focus and Scope: Biosistematika tumbuhan Biosistematikan Hewan Genetika Molekuler Mikrobiologi Ekologi Fisika Instrumentasi Fisika Material Geofisika Kimia Analitik Kimia Organik Kimia Anorganik Biokimia Kimia Fisik Kimia Lingkungan Kimia Komputasi Biomaterial
Arjuna Subject : Umum - Umum
Articles 5 Documents
 1 
Search results for , issue "Vol 2, No 2 (2022): November 2022" : 5 Documents clear
Uji Kemampuan Adsorpsi Komposit Keratin Bulu Itik-Polietilena Terhadap Ion Besi(III) Oktavia Hesti Fauzy; Uripto Trisno Santoso; Umi Baroroh Lili Utami
Jurnal Natural Scientiae Vol 2, No 2 (2022): November 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jns.v2i2.6624

Abstract

Research on the adsorption of iron(III) ion using an adsorbent from duck feather-polyethylene composite has been studied. This study aimed to determine the optimum pH conditions and the optimum contact time required in the iron(III) ion adsorption process. Optimum pH and contact time are then measured using AAS to determine the amount of iron(III) ion adsorbed with the duck feather-polyethylene composite adsorbent. The determination of the optimum pH was carried out with pH variations which are 2, 3, 4, 5, 6, 7, and 8, while determination of the optimum contact time was carried out with contact time variations which are 40, 60, 80, 100, 120, 140, and 160 minutes. The result of this research showed that optimum conditions for iron(III) ion adsorption at pH 6 and contact time at 80 minutes, which each adsorption capacity are 68.33% and 79.78%.
PENGARUH KATALIS ASAM SULFAT PADA SINTESIS NITROSELULOSA TERHADAP DERAJAT SUBSTITUSI Fitriannoor Fitriannoor; Taufiqur Rohman Taufiqur Rohman; Mahmud Mahmud
Jurnal Natural Scientiae Vol 2, No 2 (2022): November 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jns.v2i2.6671

Abstract

Effect of sulfuric acid as catalyst due to synthesis of nitrocellulose from pure cellulose towards substitusion degree had been done. The purpose of this research are to find FT-IR absorbance and substitution degree. Nitrocellulose wassynthesized using nitration method in a mixture nitric acid, sulfuric acid and water then cooled at 5OC - 15OC for 60 minutes. Results is showed that nitrocellulose synthesized has FT-IR character that the formation nitro functional group (-NO2) sharp peak at 1635 cm-1 were subtituted completely.  However the peak at 1361 cm-1 and 1288 cm-1 nitro functional group (-NO2) incompletely substituted because peak is not sharp.  So two hydroxyl functional group peak (-OH) at 3201 cm-1 and 3424 cm-1. Concluded, substitution degree using absorbance ratio from FT-IR spectrum is 2,89.
Profil Petani Pembudidaya Talas (Araceae ) di Desa Karang Intan Kabupaten Banjar, Kalimantan Selatan Helin Mardiana; Anang Kadarsah; Erma Agusliani
Jurnal Natural Scientiae Vol 2, No 2 (2022): November 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jns.v2i2.6640

Abstract

This study aims to analyze the density and distribution of the taro plant and to obtain information about the knowledge of the local population on the cultivation technique of taro (Colocasia esculenta L. Shoot) in Karang Intan Village, Banjar Regency, South Kalimantan. Taro cultivators was carried out by interview method with 10% of respondents. The interview were made a comparison percentage and discussed descriptively. The results showed that the taro cultivators are dominated by women (56.25%) and the rest 43.75% are men. Respondents majority were from the age group 41-50 years (43.75%) and the lowest (12.5%) was from the age group 21-30 and 31-40 years. Farmers are the most occupied livelihood (75%) and the rest are fish farmers (25%). Taro cultivators in Karang Intan Village still apply simple cultivation techniques and local wisdom that are hereditary.
Pemanfaatan Tepung Pisang-Singkong Sebagai Alternatif Pengganti Tepung Terigu Pada Pembuatan Mie Dengan Penambahan Putih Telur atau Isolat Kedelai Filiana Fizqi Utami; Zackiyah Zackiyah; Ali Kusrijadi
Jurnal Natural Scientiae Vol 2, No 2 (2022): November 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jns.v2i2.6633

Abstract

In general, wheat flour noodles have a chewy and elastic texture, due to the presence of amylose, amylopectin and gluten proteins. People with celiac disease are gluten intolerant, so to enjoy noodles like people in general, an alternative gluten-free flour is needed to replace wheat flour, one of which is banana-cassava flour. To increase the nutritional value and texture of noodles, such as using wheat flour, egg white protein or soybean isolate and xanthan gum or ash water are added. This study aims to determine the effect of adding egg white protein or soybean isolate and the effect of xanthan gum or water ash on banana-cassava flour noodles on the physicochemical and sensory profiles. The research stages are the production of banana-cassava flour noodles, physicochemical profile analysis includes chemical profiles (moisture content, ash content and protein content), physical profile (optimum cooking time, swelling index, cooking loss and water absorption) and gluten content and sensory testing. The results of the analysis showed that the chemical profile of banana-cassava flour noodles met the wet noodle quality standard set by SNI 2987-2015, while the ash content was higher than the quality standard. Some good formulas, the water and ash content in the addition of egg white and xanthan gum (PTX) were around 4.95% and 1.80%, respectively, while the protein content in the addition of soybean isolate and water ash (PKA) was 12.89%. . Physical profiles for cooking time and swelling index on the addition of soybean isolate and water ash (PKA) were 2.50 minutes and 186.10%, respectively, cooking loss on the addition of egg white and xanthan gum (PTX) was 5.85%, while the water absorption in the addition of egg white and water ash (PTA) was 73.95%. Gluten levels in the addition of soybean isolates and water ash (PKA) ranged from 1.10%. The physicochemical profile of banana-cassava flour noodles was influenced by the type of protein and the best formula for gluten-free noodles was the addition of soy isolate. While the ash content, swelling index, water absorption, and gluten content are influenced by the type of agglomerate, and the best formulation for gluten-free noodles is the addition of ash water. The results of the organoleptic test obtained an average score of 4 (out of a scale of 5) on the attributes of color, aroma, taste, texture, and overall preference for the banana-cassava flour noodle sample.
Analisis Kandungan Silika Hasil Ekstraksi Pada Padi Siam Mutiara Kalimantan Selatan Dwi Rasy Mujiyanti; Dahlena Ariyani; Rizky Pradana Nugroho Elyasat
Jurnal Natural Scientiae Vol 2, No 2 (2022): November 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jns.v2i2.6625

Abstract

Analisis kandungan silika hasil ekstraksi merupakan limbah kulit padi Banjar varietas “Siam Mutiara”. Analisis dilakukan agar memperoleh informasi saintifik tentang efektifitas variasi dalam konsentrasi Natrium Hidroksida bagi kemurnian silika beserta produk pengarakteran menurut (FTIR) Fourier Transform Infrared Spectroscopy dan (XRF) X-Ray Fluoresence. Teknik pengujian akan dilaksanakan dengan memanfaatkan kulit padi pada kawasan Desa Puntik Tengah, Kec.Mandastana, Kab.Barito Kuala, Kalimantan Selatan dengan melewati proses pembakaransekam padi pada suhu 200oC berlangsung dalam waktu 60 menit yang diteruskan dengantemperatur 600oC berlangsung dalam waktu 240 menit untuk membuat abu dari kulit padi Siam Mutiara dengan corak keabuan putih memiliki hasil abu sebesar 25,49%. Selanjutnya dilakukan metode ekstraksi menggunakan berbagai jenis kadar Natrium Hidroksida 1,0 M; 1,5 M; 2,0 M; 2,5 M; 3,0 M dengan produk ekstraksi silika yang paling menonjol pada konsentrasi NaOH 3,0 M yakni 7,6767 gram dengan 76,767%. Selanjutnya produk karakteristik pengenalan gugus fungsi menggunakan FTIR membuktikan sepenuhnya abu dengan silika pada kulit padi Siam Mutiara mempunyai kelompok yang paling menonjol yakni gugus silanol (Si-OH) dan siloksan (Si-O-Si), sementara itu karakteristik bahan penyusun berdasarkan XRF senyawa silika menghasilkan kadar yang paling tinggi adalah 42,2% yang dihasilkan pada konsentrasi NaOH 1,0 M.

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