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All Journal Jurnal Ilmu Dasar Jurnal Sains Dasar Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat PROSIDING SEMINAR KIMIA KOVALEN: Jurnal Riset Kimia Jurnal Kimia Mulawarman Science and Technology Indonesia JURNAL ATOMIK Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Bisma: Jurnal Bisnis dan Manajemen Spektrum Analisis Kebijakan Pendidikan BISMA (Bisnis dan Manajemen) VALUE: Journal of Business Studies Kubis
Chairul Saleh
Jurusan Kimia Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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UJI AKTIVITAS ANTIOKSIDAN KOMBINASI ESKTRAK METANOL DAUN REMEK DAGING (Hemigraphis colorata W.Bull) DAN DAUN KRATOM (Mitragyna speciosa Korth) Aina, Nur; Saleh, Chairul; Marliana, Eva
JURNAL ATOMIK Vol 10 No 1 (2025)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v10i1.1483

Abstract

Antioxidant activity test of a combination of methanol extracts of meat remek leaves (Hemigraphis colorata w. bull) and kratom leaves (Mitragyna speciosa Korth) using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) silencing method with vitamin C as a positive control was analysed by UV-Vis spectrophotometry. The methanol extract of remek leaves contains flavonoids, triterpenoids/steroids and phenolic compound while the methanol extract of kratom leaves contains triterpenoids, flavonoids, alkaloids, saponins and phenolic. The combination of the two extracts gave the highest % inhibition in the 1:1 ratio. The IC50 values of methanol extracts of meat remek leaves, kratom leaves are 70.61; 33.43 ppm indicating antioxidant activity in the strong and very strong categories and the combination is 38.08 indicating the combination index is strong antagonis
Pemberdayaan Masyarakat Pengangguran di Kawasan Lereng Argopuro untuk Pengembangan Ekonomi Lokal Bastara, Dimas B.; Saleh, Chairul; Nugraheni, Dyah Ayu; Barikah, Kuni Z.; Simatupang, Eliene Br.; Prabowo, Rachmat Udhi
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 11 No. 2 (2025): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.11.2.382-394

Abstract

The slopes of Mount Argopuro are naturally rich in inactive volcanoes in Indonesia. The surrounding community uses this area as a place for economic livelihoods. One of the dominant economic sectors in which the surrounding community chooses to meet its living needs is the agricultural sector, particularly the livestock sector. Community empowerment activities aim to 1) Increase understanding of business innovation to increase the added value of managing livestock waste; 2) Build pioneering business institutions through Community Business Groups; and 3) Initiate business marketing and sustainability. The method of implementing community empowerment includes socialization and training with four criteria: 1) Providing material on the importance of institutions; 2) Product diversity as a requirement for developing livestock waste processing businesses; 3) Business Development Practices; and 4) Strengthening business management. Community empowerment activities are equipped with activity evaluation methods through surveys that provide pre-test and post-test treatments to the unemployed community in Panti Village. The results of the Community Service show that the unemployed community in Panti Village can understand the benefits of strengthening institutions based on business legality and the creation of AD/ART as a basic requirement for the formation of institutions. The unemployed community can know, understand, and develop skills in the diversity of livestock waste processing that have not been utilized either economically or ecologically. An unemployed community can create packaging designs, promotions, networking, social media accounts, product trust concepts, and management to improve business performance. To improve the sustainability of the program and product absorption, the community empowerment team cooperates based on business transparency with the business incubator of the Faculty of Economics and Business Laboratory, University of Jember to improve networking and product expansion in the future.
The Utilization of Chitosan from Maggot (Hermetia illucens) Exuvia as Edible Coating for Tomatoes (Lycopersicon esculentum) and Edible Film with the Addition of Honey as an Antibacterial Agent Daniel; Sitorus, Saibun; Pasaribu, Subur P.; Marliana, Eva; Hairani, Rita; Ruga, Ritbey; Purba, Ritson; Saleh, Chairul; Pratiwi, Djihan Ryn; Magdaleni, Agustina Rahayu; Masmur, Indra; Masmur, Hestina
Science and Technology Indonesia Vol. 10 No. 4 (2025): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.4.1232-1241

Abstract

The use of chitosan from maggot (Hermetia illucens) exuvia as an edible coating for tomatoes (Lycopersicon esculentum) and an edible film with honey added as an antibacterial agent was investigated. This study aimed to determine the yield of chitosan from black soldier fly (BSF, Hermetia illucens) maggot exuviae as an edible coating. The chitosan was produced from chitin by deacetylation, and its effect on the weight loss and vitamin C levels of tomatoes for 7 days after treatment was investigated. The chitosan coating was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy. The antibacterial activity was evaluated using a disk diffusion method. The result showed that by deacetylation, conversion of chitin produced chitosan with a yield of 72% and a deacetylation degree of 75.05%. The chitosan coating significantly affected the weight loss of tomatoes, with the best concentration being 2%. However, the treatment did not significantly affect the decrease in vitamin C levels. The edible chitosan film from BSF maggot exuviae with added honey had a thickness, water content, and water vapor transmission rate of 0.156 mm, 16.9913%, and 30.45 g/m2/24 hours, respectively. SEM characterization showed a relatively dense surface structure, which was slightly smooth and porous. Regarding antibacterial activity, the edible chitosan film inhibited Staphylococcus aureus with an inhibition zone of 10.37 mm; however, Escherichia coli was not inhibited. These results suggest that chitosan from BSF maggot exuviae has potential as an effective edible coating for reducing weight loss in tomatoes despite showing limited antibacterial properties.
Intention model and factors leading to MSMEs falling into the trap of illegal online loans Farida, Lilik; Saleh, Chairul; Indraningrat, Ketut; Utami, Elok Sri; Apriliana, Tria
BISMA (Bisnis dan Manajemen) Vol. 18 No. 1 (2025)
Publisher : Universitas Negeri Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/bisma.v18n1.p86-112

Abstract

The micro, small, and medium enterprises (MSMEs) sector in Indonesia plays a vital role in the economy and job creation, but often struggles with limited access to capital. As a result, many MSMEs turn to fintech solutions or online loans, including illegal ones, which usually trap them in high-interest debt. Factors influencing this behaviour include social norms, perceived behavioural control, financial literacy, risk perception, interest rates, social influence, perceived ease of use, perceived usefulness, trust in illegal loans, education level, and social media usage for advertising. At the same time, the Financial Services Authority (OJK) are working to reduce MSMEs’ involvement with illegal online loans. This research aims to examine the factors that drive MSMEs to use illegal loans, focusing on how trust in online loans and the intention to use them mediate this behaviour. Additionally, education level and frequency of social media use are examined as moderating factors. The study surveyed 330 MSMEs and analysed the data using structural equation modelling. The findings indicate that subjective norms significantly increase trust in illegal loans but do not significantly impact the intention to use them. Perceived behavioural control influences both trust and the intention to use illicit loans. Interest rates also have a significant positive effect on both trust and intention. Social influence increases trust but decreases the intention to use illegal loans. Lastly, the intention to use illicit loans strongly predicts actual behaviour, with education level reinforcing this link, while frequent social media use weakens it.
Pengaruh Etos Kerja, Beban Kerja, dan Disiplin Kerja Terhadap Kinerja Internship Fasilitator Pendamping PT Bank Syariah Tbk MSIB Batch 5 di Jember Utami, Diandra Weningtyas; Agus Priono; Krishnabudi, N. G; Saleh, Chairul
VALUE: Journal of Business Studies Vol. 4 No. 1 (2025): VALUE : Journal of Business Studies
Publisher : Study Program of Management Faculty of Economics and Business University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/value.v4i1.53695

Abstract

In the increasingly advanced era of globalization, competition in the workforce is becoming more intense, making the quality of human resources (HR) a critical factor in the success of an organization. This also applies to internship programs, where the quality of facilitators plays a key role in competency development. Therefore, improving the performance of facilitators in managing internship programs needs to be taken seriously. One of the factors influencing facilitator performance is work ethic, workload, and work discipline. Hence, this study aims to identify and analyze the significant effects of work ethic, workload, and work discipline on the performance of internship facilitators mentoring at PT Bank Syariah Tbk in Jember. This research uses an explanatory research design. The data type used is quantitative, and the data sources were obtained from interviews, questionnaires, and literature reviews. The sample consists of 30 interns participating in the MSIB Batch 5 internship program at PT Bank Syariah Tbk Jember. This study employs multiple linear regression analysis using IBM SPSS Statistics software. The results of the study partially prove that work ethic has a significant effect on internship performance, workload has a significant effect on internship performance, and work discipline has a significant effect on internship performance.
Restorasi Bisnis Olahan Komoditas Bambu melalui Teknologi Tepat Guna Pirolisis Anaerob dan Teknik Kondensasi Berwawasan Agrosociopreneur Prabowo, Rachmat; Saleh, Chairul
KUBIS Vol 5 No 02 (2025): November
Publisher : Program Studi Agribisnis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56013/kub.v5i02.5014

Abstract

The development of bamboo as an alternative biomass source holds strong potential to address the shortages of charcoal raw materials while enhancing village-level economic productivity. However, charcoal production in Mengok Village is still dominated by traditional open-burning methods that are inefficient, produce inconsistent charcoal quality, require long processing times, and generate high emissions. This study aims to identify the technical and managerial needs of KUB Kartika Jaya and KUB Mengok Jaya through a needs assessment, develop an anaerobic pyrolysis prototype equipped with a condensation system, and formulate a business development model using the Social Business Model Canvas. The research applied a descriptive–analytic approach supported by interviews, observation, and focus group discussions. Findings indicate that the primary technical needs include temperature control, standardized raw-material preparation, and closed-system combustion. Managerial needs encompass formal organizational structure, production bookkeeping, and operational SOPs. The anaerobic pyrolysis prototype demonstrated improved combustion efficiency and more consistent charcoal quality. The resulting social business model illustrates that the technology enhances income, strengthens institutional capacity, and contributes positively to environmental sustainability. This study highlights the importance of integrating technological innovation with social empowerment in developing rural biomass enterprises.
The Potential oOf Butterfly Root Plant (Phanera semibifida Roxb. var. semibifida) Stem as a Source of Antioxidants and Natural Sunscreen Agent T, Nurnaningsi; Hairani, Rita; Saleh, Chairul; Ruga, Ritbey; Marliana, Eva; Hendra, Medi
JURNAL KIMIA MULAWARMAN Vol 23 No 1 (2025)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v23i1.1559

Abstract

Phanera semibifida Roxb. var. semibifida merupakan tanaman liana yang berasal dari famili Leguminosae. Tanaman ini umum digunakan sebagai tanaman obat oleh berbagai suku bangsa di Kalimantan. Penelitian ini bertujuan untuk mengidentifikasi metabolit sekunder menggunakan metode kromatografi lapis tipis (KLT), mengevaluasi aktivitas antioksidan menggunakan metode DPPH (2,2-difenil-1-pikrilhidrazil), dan menilai potensi tabir surya secara in vitro menggunakan spektrofotometer UV-Vis. Uji fitokimia menunjukkan bahwa baik ekstrak metanol kasar maupun fraksi etil asetat mengandung alkaloid, steroid, triterpenoid, fenolik, dan flavonoid. Fraksi n-heksana mengandung steroid dan triterpenoid. Fraksi air mengandung alkaloid, fenolik, dan flavonoid. Aktivitas antioksidan diamati dalam ekstrak metanol kasar, n-heksana, etil asetat, dan fraksi air dengan nilai IC₅₀ masing-masing 19,51; 105,08; 16,99 dan 137,30 mg/L. Aktivitas tabir surya ditentukan berdasarkan nilai SPF pada konsentrasi 25, 50, 100, 150, 200, dan 250 mg/L untuk ekstrak kasar, fraksi n-heksana, etil asetat, dan air, yang masing-masing berkisar antara 0,52–6,55, 0,63–6,91, 1,51–17,93, dan 0,23–3,01. Hasil ini menunjukkan potensi Phanera semibifida Roxb. var. semibifida sebagai kandidat alami dengan aktivitas antioksidan dan sifat pelindung matahari.
PENENTUAN NILAI SUN PROTECTION FACTORS (SPF) PADA EKSTRAK DAUN SURIAN MENGGUNAKAN METODE SPEKTROFOTOMETRI UV-VIS Shadrina, Alyani Nur; -, Erwin; Saleh, Chairul
JURNAL ATOMIK Vol 10 No 2 (2025)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v10i2.1552

Abstract

Excessive exposure to ultraviolet (UV) radiation can cause various negative effects on the skin, including erythema, hyperpigmentation, premature aging, and even skin cancer. The use of natural-based sunscreens is considered a safer and more environmentally friendly alternative to synthetic sunscreens. This study aimed to determine the Sun Protection Factor (SPF) of the crude extract and fractions of surian leaves (Toona sinensis (Juss.) M. Roem) using a UV-Vis spectrophotometer based on Mansur's equation. Extraction was carried out by maceration with 96% ethanol, followed by liquid-liquid partition using solvents with different polarities, namely n-hexane, ethyl acetate, and ethanol-water. Phytochemical screening showed the presence of bioactive compounds such as phenolics, flavonoids, quinones, tannins, and steroids, which are known to have photoprotective potential. The SPF test results revealed that the ethyl acetate fraction had the highest SPF value of 34.34 at a concentration of 250 ppm, classified as ultra-protection. The ethanol extract and ethanol-water fraction also showed high SPF values of 31.02 and 24.51, respectively, while the n-hexane fraction had the lowest SPF value. These findings indicate that surian leaves, particularly the ethyl acetate fraction, have promising potential as an active ingredient in natural sunscreen formulations.
Co-Authors Agung Prasetyo Agus Priono Ajeng Kartini Akbar, Fath Ali Alimuddin - Alimuddin - Alimuddin Alimuddin Alpina Nora Kaban Ami, Suyatmi Ana Arum Sari Ana Arum Sari, Ana Arum Ardiansyah - Ardiansyah - Arifah, Churniati Nur Arwidhiah, Nanda Ary Rizki Darmawi Ary Rizki Darmawi, Ary Rizki Aulia Husna Rabbani Azhar Seli Apriani Azhar Seli Apriani, Azhar Seli Barikah, Kuni Z. Bastara, Dimas B. Bohari Yusuf Bonita Tahir Daniel Daniel - Daniel - Daniel -, Daniel Daniel Daniel Daniel Daniel Daniel Daniel Daniel Tarigan Deni Karisnawati Dessy Karlina Desy Ridho Rahayu Dewi, Camelia Eugenia Djihan Ryn Pratiwi, Djihan Ryn Dwi Fitria Sari Dwi Perwitasari Wiryaningtyas, Dwi Perwitasari Eci Endang Sinulingga Eko Haryanto Eko Haryanto Elean, Samuel Elok Sri Utami Ema Desia Prajitiasari Erwin - Erwin - Erwin E Erwin Erwin Erwin Erwin Erwin Erwin Eva Marliana, Eva Fadillah, Fahmi Farhany, Farhany Farida Amir Farida Amir, Farida Fauziah, Nadiya Ayu Hairani, Rita Hammamiyah, Ulinnuha Hamsiana - Hevin Muttaqin Husnul Chatimah Indra Masmur Izkia Mawaddah Jaya, Edi Novian Juwita, Retno Karolina Sinukaban Ketut Indraningrat KHOIRUN NISAK Krishnabudi, N. G Kusumaningrum, Indah Yulia Kusumawardani, Niken Lembang, Darmita Tiku Lilik Farida Lutfiana Devi Kurnia M.Riza Agus Pramana Magdaleni Agustina Rahayu Magdaleni, Agustina R. Magdaleni, Agustina Rahayu Marsella, Virna Rindra Masmur, Hestina Medi Hendra, Medi Mira Wahyuni Mira Wahyuni, Mira Muhammad Rivai Mujahidin1, Muhamad Mustafidah - Mustafidah -, Mustafidah Mutma Inna Nadhirah - Natalia, Princessa Noor Hindryawati, Noor Nugraheni, Dyah Ayu Nur Aina Nur Aini Haryati Nuranda, Apri Nyoman Gede Krishnabudi Oman, Aries Panannangan, Josua K. Pangaribuan, Fransiscus X. Rico Pindan, Neli Peni Prabowo, Rachmat Prabowo, Rachmat Udhi Pratiwi, Ricka Indria Precelia, Sari Clara Priyanto, Fajar Wahyu Purnamie Titisari Purwanti, Gettik Andri Puspita, Leonita Dwi Puspitasari, Intan Dessy Rachman, Ferry Aditya RAHMAT GUNAWAN Rahmat Gunawan Ramadhan, Aulia Ravensca, Irene Rindawati, Novi Ritbey Ruga Ritson Purba, Ritson Rochman, Mayasari Azhari Rohmat Hidayat Rohmat Hidayat Rudi Kartika, Rudi Ruga, Ritbey Ryn Pratiwi, Djihan Saibun Sitorus Sandra, Putri Ayu Sanjaya, I Made Duwi Septi Roro Liniawati Shadrina, Alyani Nur Simatupang, Eliene Br. Siti Maimunah Sitompul, Citra Uli Soma, Yolanda V. A Subagyono, RR Dirgarini Julia Nurlianti Subur P Pasaribu Sulistiawati, Iqlimah Sulistiyawati, Rizki Ramadhani Sumarni, Feni Sunardi Sunardi Susanto, Arnis Budi Syafriyanti, Yuly T, Nurnaningsi Theresia Susetyarsi Tri Novianti Tria Annisa Rizky Tria Apriliana, Tria Ulfa Mutia Ulfa Mutia, Ulfa Ulfa, Yulyanti Sartika Utami, Diandra Weningtyas Wahyu Pratama Wajdie, Farid Winni Astuti Winni Astuti, Winni Yuli Yana