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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Teknologi Industri Pertanian Reaktor Jurnal Sains Materi Indonesia Jurnal Matematika & Sains Program Kreativitas Mahasiswa - Penelitian Majalah Kulit, Karet, dan Plastik Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat JOURNAL ONLINE OF PHYSICS PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Jurnal Riset Fisika Indonesia Jurnal Ilmu Kehutanan
Mersi Kurniati
Department Of Physics, Institut Pertanian Bogor
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics Other

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Pembuatan Bibit Jamur Tiram Putih dengan Melibatkan Remaja di Desa Situ Ilir . Mursyidah; Lusia Anita Boru Sagala; Maya Risanti; . Irzaman; Mersi Kurniati
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 1 No. 2 (2015): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.1.2.81-87

Abstract

The community service activities to develop practical skill of teenager on seedling production of oyster mushroom (Pleurotus ostreatus) through counseling and training at Situ Ilir Village. This training was begin with counseling followed by training for seedling production of pure culture (F0), spread seeds (F1), and planting seeds (F2). The quality of this training was assured by comprehensive monitoring and evaluation. In each step of seedling production, variations of sterilization medium were used and was then analyzed using Fourier Transform Infrared Spectroscopy (FTIR) analysis. The characterization results using FTIR shows stretching vibration in mycelium for pure culture and planting seeds. The stretching vibration identify the presence of several functional of groups C-O, C-N, C=O, C-H, O-H, and β-D-glucan. The results of this training also shows that after several practice and intensive guidance the teenager were able to produce seeds of oyster mushroom (Pleurotus ostreatus) without supervision.
Formulasi Minuman Kesehatan Ekstrak Jamur Tiram Putih (Pleurotus ostratus) Kaya β-Glukan . Masitoh; Leni Ariyanti; Fitrah Hadi Firdaus; Ade Irma; Erni Apriliana; . Irzaman; Mersi Kurniati; Maya Risanti
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 1 No. 2 (2015): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.1.2.96-100

Abstract

Situ Ilir Village located in Cibungbulang Subdistrict, Bogor District, West Java, which has the potential for substantial human resources for the more advanced, unfortunately majority of people's livelihood as traditional farmers. One of the potential contained in this village is oyster mushroom farm. The results of guidance and cooperation of the students of physics IPB like oyster mushroom production training has been carried out in this village, however the marketing less than the maximum. For example many young mushroom or fungus inadvertently severed by farmers to be not worth selling and discarded. By looking at this potential, then came the idea to create a health drink of the oyster mushroom. The aim of this community service are able to give the value of the oyster mushroom selling agricultural products, to increase public knowledge about the benefits of oyster mushrooms, and maximize human resources at Situ Ilir Village. The method used in this training are extension of oyster mushrooms, manufacture of health drinks, and β-glucan analysis using Fourier Transform Infrared (FTIR). This activity resulted in products processed from oyster mushroom as a health drink rich in β-glucan shown from the results of FTIR analysis, that can increase the sale value of the oyster mushroom and enhance the creativity of the human resources in the Situ Ilir Village, Cibungbulang Subdistrict, Bogor District, West Java.
ANALISIS IKATAN MOLEKUL PROTEIN (GUGUS FUNGSI C-N) PADA MISELIUM JAMUR TIRAM DENGAN METODE FOURIER TRANSFORM INFRA-RED (FTIR) Abu Sonip; Erni Aprilina; Lusia Anita Br. Sagala; Maya Risanti; Mersi Kurniati; Irzaman Irzaman
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (267.227 KB)

Abstract

Quality of oyster mushrooms depends on quality of oyster mushrooms seeds. Synthesis of oyster mushrooms seeds in this research consist of manufacture of potato dextrose agar (PDA), manufacture of pure seeds (F0), manufacture of scatter seeds (F1), and manufacture of planting seeds (F2). Sterilization of PDA has three variations, they are first level, second level, and third level with temperature 102 oC. Analysis protein (C-N) of micelium oyster mushroom with FTIR. Analysis of FTIR shows spring constant of C-N for pure seeds is 671 Nm-1, scatter seeds is 587 Nm-1, and pelanting seeds is 671 Nm-1. The bigger spring constant the more strong molekuler bonding , means big energy required to sever ties that molecule. Keywords : FTIR, micelium, molecular bonding, protein, spring constant
METODE FTIR PADA KARAKTERISASI MISELIUM JAMUR TIRAM PUTIH DENGAN BIBIT BERMEDIA SORGUM Ana Fitriana; Fitrah Hadi Firdaus; Irlian Nurmaniah; Maya Risanti; Mersi Kurniati; Irzaman Irzaman
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.815 KB)

Abstract

Oyster mushroom’s mycelium was inoculated by sorgum media’s seed were done. FTIR analisys in 400-4000 cm-1 of wave length showed that oyster mushroom’s mycelium possessed of O-H, C-H, C-O, and C=O molecul. O-H molecul showed β-glucan and C-H, C-O, and C=O molecul showed aldehyd, ester, and keton cluster. Keywords: cluster, FTIR, mycelium, oyster mushroom, sorgum.
Sifat Mekanik dan Densitas Ikatan Silang Hidrogel berbasis Tapioka Nanopartikel Indah Puspita; Mersi Kurniati
Jurnal Riset Fisika Indonesia Vol 3 No 1 (2022): Desember 2022
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v3i1.3665

Abstract

Tapioca is a natural polymer that is widely used as a raw material for hydrogels. In order to improve the mechanical properties of tapioca-based hydrogels, this research modified tapioca by acid hydrolysis method for 2 hours and 24 hours and by ethanol precipitation method. This modified tapioca was further treated with epichlorohydrin with various concentrations of 0, 5, 10, and 20% to produce a three-dimensional cross-linked structure. The results showed that the increasing of epichlorohydrin concentration led to an increasing in the mechanical properties of the hydrogels consisting of hardness, stress, modulus of elasticity, and cross-linked density. The hydrogel from tapioca hydrolyzed for 24 hours and 20% epichlorohydrin was the sample with the best mechanical properties with a hardness of 19.78 mJ, a stress of 78.65 kPa, a modulus of elasticity of 233.84 mJ, and a cross-linked density of 57.61 × 1024 m-3.
Sifat Dasar Kayu Ganitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) dari Sukabumi dan Potensi Penggunaannya Esti Prihatini; Akhrudin Maddu; Istie Sekartinging Rahayu; Mersi Kurniati
Jurnal Ilmu Kehutanan Vol 14, No 1 (2020)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1557.925 KB) | DOI: 10.22146/jik.57480

Abstract

Ganitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) adalah pohon cepat tumbuh yang banyak ditemukan di Sukabumi. Kayu ini tumbuh di hampir semua wilayah Indonesia. Tulisan ini menyajikan hasil pengujian sifat dasar (struktur anatomi, kimia, sifat fisis dan mekanis) kayu ganitri yang diambil dari hutan rakyat di daerah Sukabumi. Tujuan penelitian adalah untuk mengetahui potensi penggunan kayu ganitri berdasarkan sifat dasar dan penggunaan kayu oleh masyarakat sekitar. Hasil penelitian menunjukkan bahwa kayu ganitri memiliki kayu teras berwarna kuning dan kayu gubal berwarna putih. Corak kayu polos dan tekstur halus. Arah serat lurus sampai berpadu, kayu lunak, tidak mengkilap, dan tidak berbau. Berdasarkan nilai dimensi serat dan nilai turunannya, kayu ganitri termasuk ke dalam Kelas Mutu II. Kayu ganitri memiliki kadar holoselulosa dan selulosa yang tinggi (70,70% dan 54,58%), kadar sedang untuk lignin 21,60%, ekstraktif alkohol-benzena 3,47%, dan kadar abu 0,81%. Dengan berat jenis (BJ) kering udara 0,35 kayu ganitri termasuk ke dalam Kelas Kuat IV. Kayu tersebut disarankan untuk digunakan sebagai bahan bangunan konstruksi ringan, perkakas, furnitur, kayu lapis, papan sambung dan produk panel. Basic Properties of Ganitri Wood (Elaeocarpus sphaericus (Gaertn.) K. Schum from Sukabumi and Its Potential UsesAbsractGanitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) is a fastgrowing tree that is widely found in Sukabumi, West Java. It grows in all part of Indonesia. A research was carried out to investigate basic properties (anatomical, physical, mechanical, and chemical) of ganitri wood from the community forest of Sukabumi. The purpose of this study was to determine the potential use of ganitri wood based on its basic properties and local utilization. The results showed that the color of ganitri sapwood was white , and it was not clearly demarcated from the yellow, with fewer figure patterns. The texture was fine with straight to interlocked grain. The wood was soft, not lustrous, and no special odor. Based on the fibre dimensions and derivative values, the quality of ganitri wood fell in Class II as a raw material for pulp and paper. Ganitri had high holocellulose and cellulose levels (70.70% and 54.58%), moderate level in lignin (21.60%), and it contained 3.47% extractive soluble in alcohol-benzene, and 0.81% ash. Based on its air dry specific gravity (0,35), ganitri wood could be classified into wood Strength Class IV. The potential uses of ganitri are for lightweight construction material, tools, furniture, plywood, connecting boards, and other panel products.
Pengaruh Iradiasi Gamma dan Asam Akrilat terhadap Sifat Mekanik Polimer Super Water Absorbent (SWA) Berbasis Onggok Indah Puspita; Mersi Kurniati; Christina Winarti
Jurnal Riset Fisika Indonesia Vol 3 No 2 (2023): Juni 2023
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v3i2.4163

Abstract

The Super Water Absorbent (SWA) polymer is a type of polymer that has exceptional water absorption capabilities while remaining insoluble in water. In this study, the authors conducted research on the modification of SWA by including acrylic acid and acrylamide monomers, followed by a crosslinking process utilising gamma irradiation. This study investigated the impact of acrylic acid and gamma irradiation on the mechanical characteristics of SWA. The experimental findings demonstrated a notable enhancement in the mechanical properties of the hydrogel by the incorporation of acrylic acid. This was evidenced by a substantial rise in the hardness value, which rose from 11.09 mJ to 36.13 mJ.
ANALISIS SIFAT OPTIK NANO PARTIKEL KARBON BERBAHAN DAUN PANDAN WANGI (PANDANUS AMARYLLIFOLIUS) DENGAN METODE SINTESIS HIDROTERMAL Rahmaniah Nalwi; Akhiruddin Maddu; Mersi Kurniati; Jumardin Jumardin
JOURNAL ONLINE OF PHYSICS Vol. 8 No. 3 (2023): JOP (Journal Online of Physics) Vol 8 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v8i3.26728

Abstract

Penelitian ini bertujuan untuk menentukan sifat optik, energi pergeseran Stokes, energi celah pita (Eg), gugus fungsi senyawa kimia dan ukuran karbon nano partikel atau Carbon Nanoparticles (CPNs). Sifat optik terdiri dari absorbansi dan intensitas flouresens yang dihasilkan oleh metode sintesis hidrotermal (150, 160, dan 180) ºC. Panjang gelombang absorbansi dan intensitas flouresens terdeteksi dengan metode spektroskopi UV-Vis (396.31, 399.61, dan 411.24) nm dan eksitasi laser 405 nm untuk emisi flouresens (524.18, 512.04, dan 510.92) nm. Energi pergeseran Stokes diperoleh berdasarkan perbedaan energi foton untuk ekesitasi (absorbansi) dan emisi (flouresen) dengan nilai (0.59, 0.55 dan 0.69) eV. Energi celah pita (Eg) ditentukan dengan mengekstrapolasi grafik ke rentang linier untuk memotong sumbu energi foton. Nilai Eg adalah (2.55, 3.43, dan 2.50) eV. Spektrum dan nilai koefisien ekstensi (k), konduktivitas optik (σopt) meningkat sedangkan indeks bias (n) menurun sering bertambahnya suhu hidrotermal. Spektrum FT-IR dan ukuran CNPs dilakukan dengan menggunakan sampel suhu 180 ºC. Gugus fungsi kimia yang terbentuk adalah C-H, C-N, N=C=S, O=C=O serta senyawa Nitrogen (NO2). Ukuran rata-rata nano partikel karbon adalah 11.09 nm berdasarkan intensitas (%), volume (%) dan nomor (%) partikel pada sampel CNPs.
Co-Authors . Masitoh . Mursyidah Abu Sonip Ade Irma Akhiruddin Maddu Akhrudin Maddu Ana Fitriana Arifianto, Muhammad Lutfi Christina Winarti Christina Winarti Christina Winarti Eni Septi Wahyuni Erni Apriliana Erni Aprilina Esti Prihatini Fitrah Hadi Firdaus Fitrah Hadi Firdaus Hendrawan Laksono Horasdia Saragih Indah Puspita Irlian Nurmaniah Irmansyah Irmansyah Irzaman, Irzaman Istie Rahayu Jumardin Jumardin Leni Ariyanti LISDAR I. SUDIRMAN Lusia Anita Boru Sagala Lusia Anita Br. Sagala Made Dirgantara Maya Risanti Maya Risanti Miko Saputra Moehamad Barmawi Muhammad Khalid Muhammad Lutfi Arifianto Mujamilah Mujamilah Napthaleni , Pepen Arifin Purwantiningsih Sugita Puspitasari, Santi Rahmaniah Nalwi Renda Amalia Anggraini Santi Puspitasari Siti Nikmatin Sonny Affandi Sudaryanto Sudaryanto Tuti Wukirsari Yessie Widya Sari