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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Biologi Tropis Communications in Science and Technology Jurnal Inovasi Teknik Kimia JURNAL KIMIA SAINTEK DAN PENDIDIKAN JES-TM Social and Community Service
Chairul
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Immunology & microbiology Materials Science & Nanotechnology Other

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Manufacturing of high brightness dissolving pulp from sansevieria-trifasciata fiber by effective sequences processes Yusnimar; Evelyn; Aman, Azka; Chairul; Rahmadahana, Suci; Amri, Amun
Communications in Science and Technology Vol 7 No 1 (2022)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.7.1.2022.681

Abstract

The need of dissolving pulp (DP) for rayon fiber production is increasing rapidly in recent years. Sustainable sources of DP raw materials and an effective manufacturing process are urgently required. This study aims to manufacture dissolving pulp (DP) with high brightness from Sansevieria-trifasciata (ST) fiber through the pre-hydrolysis, soda-Anthraquinone (Soda-AQ) cooking, and chlorine-free bleaching processes. The cellulose content, kappa number, pulp yield, and viscosity were analyzed. The results showed that the ?-cellulose content in ST raw material (39.43%) was relatively similar to the ?-cellulose content in Acacia pulping kraft (39.2%). Furthermore, the variations in pre-hydrolysis time affected the Kappa number, pulp yield, and viscosity. The DP obtained by the elementary chlorine-free (ECF) bleaching process had a viscosity of 9.3 cP, ?-cellulose content of 97.7%, and the brightness of 90.1% which was higher than the ISO standard of pulp brightness. The high DP brightness obtained from this unique combination of pre-hydrolysis, soda-AQ cooking and chlorine-free bleaching sequences has great potential for further development, as it can be used in viscose rayon staple fibers production.
UNJUK KERJA NaOH DALAM MEREDUKSI LOGAM BERAT PADA LIMBAH ABU BOILER Sembiring, Maria Peratenta; Sri Irianty, Rozanna; Zulfansyah; Chairul
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.4950

Abstract

Proses pembakaran batu bara menghasilkan emisi berupa gas SO2, NO2, CO, CO2, volatile hydrocarbon (VHC), suspended particulate matter (SPM), serta residu padat berupa abu boiler. Abu boiler mengandung berbagai logam berat beracun, diantaranya tembaga (Cu), kobalt (Co), kromium (Cr), cadmium (Cd) dan timbal (Pb). Penelitian ini bertujuan untuk menentukan efisiensi reduksi logam berat Cu, Co, Cr, Pb, dan total dengan melakukan ekstraksi menggunakan pelarut kimia NaOH dan mengubah logam transisi menjadi kompleks dengan Ethylene diamine tetraacetic acid (EDTA) pada rasio EDTA: abu boiler sebesar 1:2, 1:1, 2:1; durasi pengadukan sebesar 2 dan 4 jam; serta suhu ekstraksi sebesar 25 dan 60 oC. Analisis Inductively Coupled Plasma (ICP) dilakukan untuk mengetahui penurunan kadar logam berat dari ekstrak abu boiler. Hasil penelitian menunjukkan bahwa kondisi ekstraksi berupa rasio EDTA: abu boiler sebesar 2:1, durasi pengadukan sebesar 4 jam, dan suhu ekstraksi sebesar 60 oC dapat menghasilkan persentase penurunan kadar logam berat total tertinggi yang mencapai 77,2% dengan persentase penurunan kadar Co, Cr, Cu, dan Pb secara berturut-turut sebesar 75,4%, 77,9%, 74,5%, dan 81,9%. Penelitian ini diharapkan dapat menjadi rekomendasi bagi penelitian selanjutnya dalam mengeksplor potensi pemanfaatan abu boiler yaitu sebagai bahan campuran aspal, pembuatan batako, dan sebagainya.
Enhancing dissolving pulp quality of mixed raw materials through pre-hydrolysis kraft-cooking: A study on Acacia crassicarpa and Terminalia catappa Sahan, Yusnimar; Rahmi, Sri Wahdini; Evelyn; Herman, Syamsu; Chairul; Khairat; Ohi, Hiroshi; Amri, Amun
Communications in Science and Technology Vol 9 No 2 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.2.2024.1519

Abstract

Acacia crassicarpa wood is widely used in Indonesia as a raw material for dissolving pulp (DP) by the kraft-cooking process. Given that Indonesia has a rich variety and abundance of cellulose-rich wood, it is deemed crucial to research alternative raw materials, such as Terminalia catappa wood. As an alternative source of raw material, Terminalia catappa possesses excellent adaptability to various environmental conditions and is easy to grow everywhere. The current research sought to produce DP using the mixtures of materials from these two plant species as raw materials by pre-hydrolysis, kraft-cooking, and Elementary Chlorine Free (ECF) bleaching. The DP produced had ISO brightness > 88%, alpha-cellulose content > 94%, viscosity > 6.2 cP, and pentosan content of 2.54%. The DP quality traits have met the SNI 938:2017 standards for rayon-grade pulp. Acacia Crassicarpa and Terminalia Catappa are the prospective wood mixture for producing high-quality dissolving pulp via the kraft-cooking process.
SINTESIS SABUN PADAT TRANSPARAN BERBAHAN DASAR MINYAK KELAPA, MINYAK KELAPA SAWIT, MINYAK ZAITUN DENGAN PENAMBAHAN ECO-ENZYME Chairul; Nurfatihayati; Anisa Mutamima; Arrafi Razzaq; M Rafki Yunaldi
Jurnal Inovasi Teknik Kimia Vol. 10 No. 1 (2025)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v10i1.12545

Abstract

Penelitian ini bertujuan untuk membuat sabun padat transparan dari minyak kelapa murni, minyak kelapa sawit, dan minyak zaitun dan menganalisis pengaruh penambahan eco-enzyme terhadap karakteristik sabun yang dihasilkan yaitu pH, kadar air, kadar asam lemak bebas, uji stabilitas busa, uji organoleptik, dan uji iritasi. Eco-enzym yang digunakan berasal dari hasil fermentasi sampah organik buah-buahan (kulit nanas, kulit jeruk, kulit mentimun, tomat, sawi dan pepaya). Penelitian ini menggunakan 5 perlakuan penambahan eco-enzyme, yaitu tanpa eco-enzyme (P1), 2 mL (P2), 4 mL (P3), 6 mL (P4), dan 8 mL (P5). Hasil uji pH menunjukkanbahwa kelima sabun berada pada range 9,44-10,41, uji kadar air sabun berada pada range 11,82-13,82%, dan uji kadar asam lemak bebas menghasilkan nilai 0,23-0,70%. Hasil uji stabilitas busa berada pada range 97,45-99,2%, Uji organoleptik dilakukan oleh 24 responden dan menilai kelima sabun transparan, bertekstur keras, beraroma apel, dan berwarna kuning bening. Kelima sabun tidak menimbulkan iritasi kulit pada 24 panelis. Berdasarkan hasil uji karakteristik kelima sabun padat transparan telah memenuhi syarat mutu sabun padat SNI 063532-1994.
Species Diversity of Genus Aspergillus, Endophytic Fungal Isolated From Mangrove Ceriops tagal and their Antibiotic Potential Sophia, Anggun; Agustien, Anthoni; Chairul; Syamsuardi
HAYATI Journal of Biosciences Vol. 32 No. 5 (2025): September 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.5.1174-1184

Abstract

The rapid increase in antimicrobial resistance has encouraged development of new natural and urgent strategies to fight drug-resistant pathogens, one of which is using endophytic fungi. Endophytic fungi found in Ceriops tagal mangrove plant, which can adapt to extreme salinity environments of up to 60 ppt. Endophytic fungi are isolated from leaves, branch, and roots. Each isolate was identified morphologically and cultured in potato dextrose broth media for 21 days. After incubation, liquid culture was extracted with ethyl acetate and evaporated to obtain a thick extract. The Kirby Bauer method was used to evaluate the antibiotic potential of each endophytic fungal extract against pathogenic microbes Staphylococcus aureus, Escherichia coli, and Candida albicans. Concentration used was 5%, antibiotics used as positive controls were chloramphenicol (30μg/disk), nystatin (100 IU/disk), as negative controls DMSO. Three endophytic fungi were isolated from roots (ECT7, ECT 8, ECT 10), two from leaves (ECT 26, ECT 28) and six from branches (ECT 31, ECT 47, ECT 48, ECT 51, ECT 55 and ECT 85). Fungal isolates ECT10 has been proven to effectively exhibit strong antibiotic activity against microorganisms E. coli, S. aureus, and C. albicans, with inhibition zones measuring 13.0 mm, 11.8 mm, and 11.6 mm, respectively.
Application of fern Davallia denticuluta L. extract using different solvents as biostimulants for Kopay chili (Capsicum annuum L.) production Suwirmen; Noli, Zozy Aneloi; Marta, Fepi Dwi; Chairul
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 53 No. 2 (2025): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v53i2.62870

Abstract

Ferns are a potential source of biostimulant compounds due to their rich content of bioactive secondary metabolites. This study aimed to evaluate different solvents for extracting bioactive compounds from Davallia denticulata and to identify the optimal extract formulation for enhancing the growth and yield of Kopay chili. This research was conducted from February to May 2024 at the Plant Physiology Research Laboratory and Greenhouse, Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Andalas, Padang. A completely randomized design with 16 treatment combinations involving four solvents (A1 = aquadest, A2 = methanol, A3 = ethanol, A4 = butanol) and four extract concentrations (B0 = 0 mg L-1, B1 = 25 mg L-1, B2 = 50 mg L-1, and B3 = 100 mg L-1) was employed. Plant growth parameters responded differently to various combinations of extract concentration and solvent type. Methanol extract at 100 mg L-1 significantly increased plant height, ethanol at 50 mg L-1 improved shoot dry weight and root biomass, butanol at 100 mg L-1 increased chlorophyll b and total chlorophyll, and methanol at 25 mg L-1 resulted in higher fruit weight. These results indicate that Davallia denticulata extract, when properly formulated, holds strong potential as a natural biostimulant to improve growth and productivity in chili cultivation. Keywords: active compouns; chili growth; plant extract; secondary metabolites; solvents extraction
Education on live pharmacy plants and the use of small land in Sungai Musang Village Awilda, Pertiwi; Chairul; Nurwahida; Nurrahmah, Sheila; Rizwarini, Siti Rahma; Bawaihi
Journal of Social and Community Service Vol. 2 No. 2 (2023): July 2023
Publisher : Faculty of Engineering University of Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestmc.v2i2.161

Abstract

Knowledge about the use of yard land for live pharmacy plants or family medicinal plants (toga) is not yet well understood by the people of Sungai Musang village, which is shown by the yard land around people's houses which has not been planted with live pharmacy plants.  The aim of this service is to provide education to the public regarding live pharmacy plants and to be able to utilize the narrow land around the house to plant live pharmacy plants. The method given is a lecture about the meaning of a living pharmacy, types of plants, the benefits of a living pharmacy, and how to process medicinal plants. Followed by questions and answers and distributing leaflets to participants. Another activity is to provide an example of making a living pharmacy for a narrow area from wooden shelves and mini pots. Participants were very enthusiastic about taking part in this activity, most of the participants gained knowledge about living pharmacies and their uses and were expected to be motivated to make their own in their own yards.
Education on the Utilization of Broccoli (Brassica oleracea L. Var italica) as a Preventive Measure for Myopia at SMA Negeri 2 Banjarmasin Awilda, Pertiwi; Chairul; Nurwahida; Nurrahmah, Sheila; Rahima, Siti; Kartini
Journal of Social and Community Service Vol. 1 No. 3 (2022): July 2022
Publisher : Faculty of Engineering University of Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestmc.v1i3.190

Abstract

Myopia is a growing public health issue worldwide, including in Indonesia. Preventive measures include educating the public about the importance of nutrition for eye health. This community service program was conducted at SMA Negeri 2 Banjarmasin in April 2022, aiming to educate students about the benefits of broccoli (Brassica oleracea L. var italica) as an essential nutritional source for preventing myopia. Broccoli is rich in vitamin C, lutein, zeaxanthin, and beta-carotene, which are known to benefit eye health. The program utilized methods such as pre-tests, interactive educational sessions, broccoli preparation demonstrations, and post-tests to evaluate knowledge improvement. Results showed a significant increase in students' understanding of broccoli's benefits for eye health, with average pre-test scores of 56.7 rising to 85.4 in the post-test.
Tree and Sapling Level Vegetation Analysis in the Social Forestry Area of Nagari Sumpur Kudus, Sijunjung Regency Marqfirokh, Ramadhana; Chairul
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i1.8534

Abstract

This research was conducted in the Social Forestry Area of Nagari Sumpur Kudus, from May to October 2023. The reseacrh on this study airns to determine the composition and structure of tree and sapling vegetation in the Social Forestry Area of Nagari Sumpur Kudus, Sijunjung Regency. The method used in this study was a 120-meter transect line with 12 plots. In the plot, sub-plots were made with a size of 10 m x 10 m for the tree level and 5 m x 5 m for the sapling level. The results showed that there were 14 families, 14 genus, 14 species, and 19 individuals at the tree level. The co-dominant families, namely the Cornaceae, Euphorbiaceae, Phyllanthaceae and Ulmaceae. The compotition of sapling level was founds 17 families, 29 genus, 36 species, and 40 individuals. The co-dominant families are in the Phyllanthaceae and Euphorbiaceae. The highest importance index at the tree level was found in the Alangium sp. and the lowest was found in the Dipterocarpus confertus. the highest importance index for sapling level was found in the Cephalomappa malolpticarpa and the lowest was found in the Bischofia javanica and Nephelium cuspidatum. The diversity index (H') for tree-level plants is classified as medium and (H') for sapling-level plants is high.
Co-Authors Aman, Azka Amun Amri Anthoni Agustien Arrafi Razzaq Awilda, Pertiwi Bawaihi Evelyn KARTINI Khairat M Rafki Yunaldi Maria Peratenta Sembiring Marqfirokh, Ramadhana Marta, Fepi Dwi Mutamima, Anisa Nurfatihayati Nurrahmah, Sheila Nurwahida Ohi, Hiroshi Rahima, Siti Rahmadahana, Suci Rahmi, Sri Wahdini Rizwarini, Siti Rahma RR. Ella Evrita Hestiandari Sophia, Anggun Sri Irianty, Rozanna Suwirmen Syamsu Herman Yusnimar Sahan Zozy Aneloi Noli Zulfansyah