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All Journal Teknotan: Jurnal Industri Teknologi Pertanian Dinamisia: Jurnal Pengabdian Kepada Masyarakat Jurnal Penelitian Kelapa Sawit Agroteknika Jurnal Abdi Insani Jurnal Bio-Geo Material Dan Energi Sagu Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) Journal of Agricultural and Biosystem Engineering Research Jurnal Teknologi Lingkungan Journal of Engineering Science and Technology Management
Chandra Gunawan
Department of Agricultural Technology, Faculty of Agriculture, University of Riau
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Social Sciences Other

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Produksi dan karakterisasi selulosa mikrokristalin dari limbah batang kelapa sawit (Elaeis Guineensis Jacq.) hasil replanting perkebunan Chandra Gunawan; Alfi Asben; Tuty Anggraini; Athanasia Amanda Septevani
Jurnal Penelitian Kelapa Sawit Vol 29 No 3 (2021): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iopri.jur.jpks.v29i3.139

Abstract

Selulosa mikrokristalin merupakan turunan dari selulosa atau selulosa yang dimodifikasi dalam skala mikro dengan ukuran panjang sekitar 10-200 µm yang bersifat kristalin. Batang kelapa sawit dapat digunakan sebagai salah satu alternatif produksi selulosa mikrokristalin. Penelitian ini bertujuan untuk mendapatkan selulosa mikrokristalin dari batang kelapa sawit dan mengetahui karakteristik setiap tahapan perlakuannya. Diperoleh selulosa mikrokristalin dengan kandungan selulosa yang berhasil ditingkatkan dari 31,11 ± 2,01% menjadi 84,35 ± 1,04%, hal ini sesuai dengan gugus puncak serapan FTIR dan seiring dengan penurunan kandungan lignin dan hemiselulosa. Analisa XRD menunjukkan terjadinya peningkatan kristalinitas dari MCC hingga 78% setelah melalui tahapan perlakuan kimia. Hasil SEM didapatkan MCC dengan panjang dan lebar sebesar 43,2 ± 19,6 µm dan 11,4 ± 8,1 µm dan menunjukkan terjadinya pemecahan komponen kompleks pada serat Raw batang kelapa sawit yang digambarkan dengan struktur dari permukaan yang menjadi lebih halus dan berbentuk fibril yang teratur. Berdasarkan hasil penelitian ini, proses delignifikasi, pemutihan, dan hidrolisis asam secara bertahap berhasil memproduksi selulosa mikrokristalin dari batang kelapa sawit.
Improving Hydrophobicity and Oil Barrier Performance of Paper by Coating with PVA/Nanocellulose-Based Suspension Tanjung, Faisal Amri; Arifin, Yalun; Gunawan, Chandra; Fung, Liem Khe
Jurnal Teknologi Lingkungan Vol. 25 No. 2 (2024)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2024.5775

Abstract

This study investigates the use of nanocellulose and polyvinyl alcohol (PVA) suspension as a coating formulation on a paper substrate and its effects on the paper’s oil and water barrier properties. The PVA/nanocellulose coating suspension was prepared via a simple nanocellulose mixing procedure with various concentrations of PVA. The coating was carried out by depositing an adhesive agent and multiple layers of nanocellulose/PVA suspension on the paper surface using a bar coater. The results showed that coating up to the fourth layer decreased the opacity index and air permeability rate of the coated papers, but there was a slight increase in the air permeability at the sixth layer. The deposition of PVA/nanocellulose suspension on the paper surface also increased the water and oil barrier performance. The highest contact angle (CA) of 82° and oil kit value of 14 was obtained at the fourth layer of coating using suspension with 2 wt% of PVA content, as compared to the uncoated paper (CA 43°). It is interesting to note that coating paper using nanocellulose/PVA suspension can effectively enhance the hydrophobicity and oil barrier performances of the paper. This satisfactory results in paper properties after being coated with nanocellulose/PVA suspension can be a potential environmentally friendly material in food packaging applications.
Effect of Boiling, Steaming, and Autoclaving Methods on the Physical Characteristics of Moringa (Moringa oleifera) Seed Flour Salman, Annisa Nazifa; Gunawan, Chandra; Ristia, Jeany; Panjaitan, Bintang Sipartogi
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.268

Abstract

This study evaluated the effect of moist heat processing (boiling, steaming, autoclaving) on the physical properties of Moringa oleifera seed flour to determine the optimal pretreatment for product development. Exotesta of moringa seeds were removed, subjected to the treatments, oven-dried, grounded, and sieved (60 mesh). Moisture content, color (CIELab), bulk density, and angle of repose were analyzed. Results showed that all treatments increased moisture content compared to raw seeds (4,36–4,46%), with no significant difference among treatments. Autoclaving produced flour with the highest bulk density (0,4258 g/cm³) and lowest angle of repose (33,37°), indicating better flowability. Color analysis revealed darker flour in autoclaved and boiled samples due to Maillard reactions. Overall, autoclaving is the most effective pretreatment for producing denser, free-flowing Moringa seed flour suitable for functional food applications.
Paper Mill Sludge as a Substitute Material in Paving Blocks for a Sustainable Waste Management Approach Gunawan, Chandra; Fung, Liem Khe; Nul Hakim, Lukman; Wahyudi, Eko; Pramana, Angga; Zalfiatri, Yelmira
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 2 (2025): September 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i2.269

Abstract

This study evaluates the use of Paper Mill Sludge (PMS) waste as a partial replacement for fine aggregate in paving block production, focusing on compressive strength and economic feasibility. PMS was incorporated at 0%, 5%, 10%, 15%, and 20% of the total fine aggregate weight. Compressive strength tests followed the Indonesian National Standard (SNI 03-0691-1996), accompanied by production cost analysis. The results showed that 5% PMS achieved the highest compressive strength of 264.23 kg/cm², about 7.7% higher than the control 258.71 kg/cm², meeting the SNI quality class B (K200) standard. Meanwhile, 10% PMS reduced production costs by 6–8% while still satisfying the minimum requirement for K200 paving blocks (category B). This demonstrates a clear trade-off between mechanical performance and cost efficiency, where 5% PMS ensures maximum strength, while 10% PMS provides adequate strength with economic benefits. At lower levels, PMS fibers improved cement–aggregate bonding and reduced voids, whereas higher dosages (>10%) disrupted hydration and lowered strength. Practically, PMS utilization offers the paving block industry a sustainable and cost-effective alternative that reduces reliance on natural aggregates, supports waste valorization, and aligns with SNI standards for applications such as parking lots.
Capacity Building Training for Administrators to Improve the Management of Harapan Makmur Village-Owned Enterprise in Tebing Tinggi Village: Pelatihan Peningkatan Kapasitas Pengurus dalam Rangka Meningkatkan Pengelolaan BUMDES Harapan Makmur Desa Tebing Tinggi Anthony Hamzah; Angga Pramana; Eko Wahyudi; Rahmadini Payla Juarsa; Jeany Ristia; Chandra Gunawan; Nur Hasnah; Vivin Jenika Putri; Anania Rahmah; Arum Rovarti Ningsih; Nadya Novianti Dwi Putri; Addiena Syahvina Nasution; Masyitah; Fikratul Ikhsan; Fadlila Endyra
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 9 No. 5 (2025): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/

Abstract

BUMDes Harapan Makmur was established with the aim of developing the village's economic potential through business units based on local resources, including the management of agricultural tools, trade in agricultural products, and equipment and transportation rental services. The businesses run by BUMDes have not yet been operating optimally. This is due to a lack of competent human resources, a lack of external support, and limited access to training and outreach at BUMDes Harapan Makmur. This community service program aims to identify strategic steps to increase the capacity of BUMDes management for suntainability. The methods used in the preparation stage included surveys and Focus Group Discussions (FGDs), while the implementation and evaluation stages followed. The training results indicated that BUMDes Harapan Makmur has several potential business units that can be developed, namely the Rice Milling Unit (RMU), a 5-hectare oil palm plantation, agriculture and livestock businesses, oil palm plantations (5 ha) and rice fields (70 ha), provision of agricultural production facilities (saprodi), agricultural services (RMU, rice field plowing), and travel services. Implications in increasing the capacity of administrators through capacity building training for administrators, optimization of agricultural tools and agricultural inputs, socialization and community empowerment
Effect of Sulfuric Acid (H₂SO₄) Scarification on Seed Dormancy Breaking and Germination of Soursop (Annona muricata L.) Eko Wahyudi; Melati Hutabarat; Elza Zuhry; Elisa Apriliani; Dian Rakhmad; Nurbaiti Nurbaiti; Anthony Hamzah; Chandra Gunawan; Yunandra Yunandra
Agroteknika Vol 9 No 2 (2026): Juni 2026
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/agroteknika.v9i2.668

Abstract

Soursop (Annona muricata L.) is a tropical fruit plant with high economic value; however, its cultivation is limited by seed dormancy, which delays germination. This study aimed to determine the most effective sulfuric acid (H₂SO₄) concentration for breaking seed dormancy and improving seed viability of soursop. The experiment was conducted at the Greenhouse and Plant Breeding Laboratory, Faculty of Agriculture, Universitas Riau, and implemented using a completely randomized design with four treatments: 0% (control), 70%, 75%, and 80% H2SO4 concentration. Each treatment was repeated five times. A total of 20 experimental units were obtained, each consisting of 25 seeds, for a total of 500 seeds used in the experiment. The results indicated that sulfuric acid treatment significantly affected most germination parameters. Seeds soaked in a 75% sulfuric acid solution exhibited the fastest germination time (28.40 Day After Planting), the highest germination percentage (88.80 %), and the strongest seed vigor (5.55%). These findings suggest that chemical scarification with 75% H₂SO₄ for 30 minutes can serve as a practical and efficient pre-sowing treatment to improve seedling establishment in soursop propagation.
PEMBUATAN VIDIO DIGITAL MARKETING MAKANAN KERUPUK SAGU KHAS KUANSING Angga pramana; Arum Rovarti Ningsih; Dwi Visti Rurianti; Eko Wahyudi; Rahmadini Payla Juarsa; Jeany Ristia; Chandra Gunawan; Nur Hasnah; Vivin Jenika Putri; Anania Rahmah; Tito Handoko
BHAKTI NAGORI (Jurnal Pengabdian kepada Masyarakat) Vol. 5 No. 2 (2025): BHAKTI NAGORI (Jurnal Pengabdian kepada Masyarakat) Desember 2025
Publisher : LPPM UNIKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/bhakti_nagori.v5i2.5020

Abstract

Perkembangan teknologi digital memberikan peluang besar bagi usaha mikro, kecil, dan menengah (UMKM) untuk memasarkan produk secara lebih efektif melalui media online. Penelitian ini bertujuan membuat video digital marketing sebagai sarana promosi kerupuk sagu khas Kuantan Singingi (Kuansing), Riau, yang merupakan produk pangan tradisional bernilai ekonomi tinggi. Proses pembuatan video dilakukan melalui tahapan perencanaan konsep, pengambilan gambar, pengeditan, hingga distribusi melalui platform media sosial seperti Instagram, Facebook, dan TikTok. Konten video menonjolkan keunikan bahan baku sagu lokal, proses produksi yang higienis, serta nilai budaya yang melekat pada produk. Hasil implementasi menunjukkan bahwa penggunaan video digital marketing mampu meningkatkan daya tarik konsumen, memperluas jangkauan pasar, dan memperkuat citra merek kerupuk sagu. Strategi ini diharapkan menjadi langkah efektif untuk meningkatkan daya saing UMKM lokal di era transformasi digital. Kata kunci: digital marketing, kerupuk sagu, UMKM, Kuantan Singingi, video promosi
The Rancang Bangun Kiln Pirolisis Tempurung Kelapa Tipe Batch dengan Mekanisme Poros Pemutar dan Sistem Ventilasi Terbatas Bintang Sipartogi Panjaitan; Vonny Setiaries Johan; Yossie Kharisma Dewi; imelda yunita; chandra gunawan; addiena s nasution; nadya novianti; arum rovarti
Journal of Agricultural and Biosystem Engineering Research Vol 7 No 1 (2026): Journal of Agricultural and Biosystem Engineering Research: Regular Issue
Publisher : Program Studi Teknik Pertanian, Fakultas Pertanian, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jaber.2026.7.1.18509

Abstract

Pirolisis tempurung kelapa menggunakan tungku terbuka atau kiln sederhana masih menghadapi kendala berupa suplai oksigen yang tidak terkendali, suhu karbonisasi yang kurang stabil, rendemen arang yang rendah, serta proses pembongkaran produk yang kurang ergonomis. Penelitian ini bertujuan merancang dan memfabrikasi kiln pirolisis tempurung kelapa tipe batch dengan mekanisme poros pemutar dan ventilasi udara terbatas untuk mendukung proses karbonisasi yang lebih terkendali dan mudah dioperasikan. Perancangan dilakukan melalui pendekatan rekayasa yang mencakup penentuan kapasitas bahan 20 kg, volume ruang pengarangan, kebutuhan energi pemanasan awal, debit udara pembakaran parsial sebesar 0,00456 m³/s, konfigurasi lubang udara, serta sistem cerobong natural draft berdiameter 3 inci yang direduksi menjadi 1 inci. Hasil fabrikasi menghasilkan prototipe kiln berbentuk silinder vertikal berdiameter 37 cm yang dipasang pada rangka penyangga berbentuk A dengan poros horizontal, sehingga badan kiln dapat dimiringkan secara manual untuk memudahkan pengeluaran arang tanpa pintu samping. Inspeksi dimensional dan fungsional menunjukkan bahwa ruang pengarangan, ventilasi, cerobong, rangka penyangga, dan mekanisme pemutar telah terpasang sesuai rancangan. Prototipe ini menjadi dasar untuk pengujian kinerja termal, distribusi suhu, rendemen arang, dan kualitas produk pada tahap berikutnya. Rancangan ini berpotensi diterapkan pada skala UMKM sebagai kiln pirolisis yang lebih operasional, terkendali, dan mudah direplikasi.
Characteristics of Lignin from Solid Waste Empty Palm Fruit Bunches (EPFB) using the Organosolv Method Pramana, Angga; Zalfiatri, Yelmira; Irawan, Wawan; Rovarti Ningsih, Arum; Gunawan, Chandra; Putri, Vivin Jenika; Rahmah, Anania
Jurnal Bio-Geo Material Dan Energi Vol. 6 No. 1 (2026): Journal of Bio-Geo Material and Energy (BiGME), February 2026
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/j-bigme.v6i1.48289

Abstract

Oil palm empty fruit bunches are solid waste from the palm oil processing process that contains a significant amount of lignin and cellulose. Oil palm empty fruit bunches are widely found in Indonesia, especially in Riau Province. The processing of oil palm empty fruit bunches has not been effectively utilized. Therefore, the author isolated cellulose from oil palm empty fruit bunches using the organosolv method. The organosolv method is a type of isolation method that is environmentally safe than the kraft process, as it employs solvents in the form of organic chemicals, such as formic acid and acetic acid. This research was conducted by varying the ratio of the solvent solution using acetic acid and formic acid. Various solutions were employed, namely P1=20 ml formic acid+140 ml acetic acid, P2=40 ml formic acid+120 ml acetic acid, P3=60 ml formic acid+100 ml acetic acid, P4 = 80 ml formic acid+80 ml acetic acid, P5=160 ml formic acid, and P6=160 ml acetic acid. The best results were obtained in the P2 treatment with a variation of 40 ml formic acid + 120 ml acetic acid and obtained a high level of yield, namely in the P2 treatment it was 56.85%, the water content was 4.70%, the ash content was 4.84%, the acidity level (pH) was 4.67 and FTIR test results show wave peaks in treatments P3 and P6 28 waves
APPLICATION OF BENENG TARO STARCH EDIBLE FILM WITH THE ADDITION OF PINEAPPLE EXTRACT IN PINEAPPLE DODOL Trivira Wulansuci; Yelmira Zalfiatri; Yanti Nopiani; Chandra Gunawan; Anne Mudya Yolanda
SAGU Vol. 25 No. 1 (2026): SAGU Journal – Agri. Sci. Tech., Maret, 2026, Vol. 25 : No. 1
Publisher : Fakultas Pertanian Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jsg.v25i1.78

Abstract

The objective of this study was to determine the optimal combination of beneng taro starch and pineapple peel extract in the formulation of edible films for pineapple dodol packaging. As a semi-moist food,  pineapple dodol is highly susceptible to spoilage, therefore the application of an edible film coating serves  as a strategic solution to extend its shelf life. This research evaluates how varying these components affects the functional characteristics of the film to ensure maximum protection for the product. The experimental design used was a completely randomized factorial design with 2 factors, namely the addition of taro starch (2 g, 3 g, 4 g, 5 g) and the addition of pineapple peel extract (1%, 2%, 3% v/v), with 3 repetitions. Parameters observed were edible film thickness, water vapor transmission rate (WVTR), water resistance, moisture content of the dodol, total plate count (TPC), and sensory aroma evaluation. Data were statistically using Analysis of Variance (ANOVA) and continued with Duncan’s Multiple Range Test (DMRT) at the 5% level. Results indicated an interaction effect between starch and extract on the WVTR  and water resistance of the edible film.  The individuals treatments significantly affected thickness, WVTR, water resistance, moisture, TPC, and aroma scores. The best treatment was P5K3 (5 g of beneng taro starch and 3% pineapple peel extract) with criteria of thickness 0.221 mm, WVTR 6.67 g/m²/hour, percentage swelling water resistance 81.71%, moisture content 20.50%, TPCS 3.52 log CFU/g, and descriptive aroma of pineapple dodol 1.33 (not rancid) lasts until the 6th day. 
Co-Authors addiena s nasution Addiena Syahvina Nasution Alfi Asben Anania Rahmah Anania Rahmah Angga Pramana Angga Pramana Angga Pramana, Angga Anne Mudya Yolanda Annisa Nazifa Salman Anthony Hamzah Anthony Hamzah AR, Nur Hasnah Arifin, Yalun arum rovarti Arum Rovarti Ningsih Athanasia Amanda Septevani Bintang Sipartogi Panjaitan Bintang Sipartogi Panjaitan Dewi, Yossie Kharisma Dian Rakhmad Dwi Visti Rurianti Eko Wahyudi EKO WAHYUDI Eko Wahyudi Elisa Apriliani Elza Zuhry Emma Riftyan Fadlila Endyra Faisal Amri Tanjung Fikratul Ikhsan Fung, Liem Khe Imelda Yunita Jeany Ristia Jeany Ristia Jeany Ristia Masyitah Melati Hutabarat Mhd Andry Kurniawan Nadya Novianti Nadya Novianti Dwi Putri Ningsih, Arum Rovarti Nul Hakim, Lukman Nur Hasnah Nur Hasnah Nur Hasnah AR Nurbaiti Nurbaiti Panjaitan, Bintang Sipartogi Putri, Vivin Jenika Rahmadini Payla Juarsa Rahmah, Anania Ristia, Jeany Rovarti Ningsih, Arum Salman, Annisa Nazifa Shanti Fitriani Tito Handoko Trivira Wulansuci Tuty Anggraini Vivin Jenika Putri Vivin Jenika Putri Vonny Setiaries Johan Vonny Setiaries Johan Wawan Irawan, Wawan Wulandari, Dwi Seprina Yanti Nopiani Yanti Nopiani Yelmira Zalfiatri Yunandra Yusmarini Yusmarini Zulhayada, Nasya