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All Journal Journal of Food and Pharmaceutical Science BERKALA SAINSTEK Jurnal Inovasi Pendidikan Kimia Jurnal Bahan Alam Terbarukan JURNAL FISIKA Indonesian Journal of Cancer Chemoprevention Journal of Natural Sciences and Mathematics Research Indonesian Journal of Chemical Science Spektra: Jurnal Fisika dan Aplikasinya International Journal of Pedagogy and Teacher Education Walisongo Journal of Chemistry Sarwahita : Jurnal Pengabdian Kepada Masyarakat Jurnal Komunikasi Pendidikan JURNAL PENDIDIKAN MIPA Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Jurnal Pengabdian Nasional (JPN) Indonesia Jurnal Farmasi dan Sains Indonesia (JFSI) INDRA: Jurnal Pengabdian kepada Masyarakat Journal of Science and Technology Research for Pharmacy Journal of Food and Pharmaceutical Sciences Jurnal Pengabdian Nasional (JPN) Indonesia Biosaintifika: Journal of Biology & Biology Education Jurnal Abdimas Science and Community Pharmacy Journal
Alighiri, Dante
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Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Physics Social Sciences Other

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Komparasi Hasil Belajar Kimia Menggunakan Pembelajaran Berbasis Penilaian Performens dan Project Based Learning (PjBL) Apriliana Drastisianti; Lis Setiyo Ningrum; Dante Alighiri
JURNAL PENDIDIKAN MIPA Vol 12 No 3 (2022): JURNAL PENDIDIKAN MIPA
Publisher : Pusat Publikasi Ilmiah, STKIP Taman Siswa Bima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37630/jpm.v12i3.696

Abstract

Perkembangan ilmu pengetahuan dan teknologi berpengaruh pada bidang pendidikan sehingga diperlukan sumber daya manusia (SDM) yang berkualitas. Salah satu cara meningkatkan kualitas SDM tersebut dengan memperbaiki konsep menghafal yang dipegang teguh oleh siswa. Penelitian ini bertujuan untuk mengetahui hasil belajar kimia yang lebih baik antara pembelajaran berbasis penilaian performens dengan project based learning (PjBL). Populasi penelitian adalah semua siswa kelas XI IPA berjumlah 120 orang. Pengambilan sampel dilakukan dengan cluster random sampling. Penelitian menggunakan metode penelitian kuantitatif. Sampel penelitian terdiri dari dua kelas eksperimen 1 yang menggunakan pembelajaran berbasis penilaian performens dan kelas eksperimen 2 yang menggunakan project based learning (PjBL). Metode pengumpulan data menggunakan dokumentasi dan tes. Instrumen penelitian berupa perangkat pembelajaran dan soal tes hasil belajar kimia. Analisis data yang dilakukan adalah uji normalitas dan homogenitas. Hasil penelitian menunjukkan bahwa berdasarkan uji independent sample t-test nilai signifikansi 0,012 < 0,05 sehingga terdapat perbedaan yang signifikan antara hasil belajar siswa kelas eksperimen 1 dan kelas eksperimen 2.
The Penguatan Tata Kelola Administrasi Sekolah Berbasis E-Archives untuk Meningkatkan Akuntabilitas Sekolah dalam Implementasi Kurikulum Merdeka di SMK Swasta Se-Kabupaten Kendal Nina Oktarina; Uswatun Hasanah; Dian Fithra Permana; Dante Alighiri; Anis Susanti; Basyirun
Jurnal Pengabdian Nasional (JPN) Indonesia Vol. 4 No. 3 (2023): September
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM) AMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jpni.v4i3.448

Abstract

Good administrative governance in organizations, especially in educational institutions, is crucial to support data-driven governance and management of educational records. Currently, archive management in schools is not yet optimal, and the capacity to support documents for school accountability is still low. Key issues include difficulty retrieving documents, loss of documents, and lack of consistency in the use of filing systems. One of the main causes of this problem is the incompetence of archivists. Therefore, community service activities are carried out to enhance the knowledge and skills of school archivists at private vocational schools in Kendal Regency. This activity includes training, documentation and archival digitization practices based on national education standards. The activity targets 50 school archivists in the area, using methods such as lecture, question and answer, discussion, and practice. The assessment is carried out based on improving knowledge and skills. The results of this activity include articles in national magazines, media reports and video clips about this activity.
The Penguatan Tata Kelola Administrasi Sekolah Berbasis E-Archives untuk Meningkatkan Akuntabilitas Sekolah dalam Implementasi Kurikulum Merdeka di SMK Swasta Se-Kabupaten Kendal Nina Oktarina; Uswatun Hasanah; Dian Fithra Permana; Dante Alighiri; Anis Susanti; Basyirun
Jurnal Pengabdian Nasional (JPN) Indonesia Vol. 4 No. 3 (2023): September
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM) STMIK Indonesia Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jpni.v4i3.448

Abstract

Good administrative governance in organizations, especially in educational institutions, is crucial to support data-driven governance and management of educational records. Currently, archive management in schools is not yet optimal, and the capacity to support documents for school accountability is still low. Key issues include difficulty retrieving documents, loss of documents, and lack of consistency in the use of filing systems. One of the main causes of this problem is the incompetence of archivists. Therefore, community service activities are carried out to enhance the knowledge and skills of school archivists at private vocational schools in Kendal Regency. This activity includes training, documentation and archival digitization practices based on national education standards. The activity targets 50 school archivists in the area, using methods such as lecture, question and answer, discussion, and practice. The assessment is carried out based on improving knowledge and skills. The results of this activity include articles in national magazines, media reports and video clips about this activity.
AKTIVITAS PENGAWET ALAMI ETHYL LACTATE PADA IKAN TONGKOL (Euthynnus affinis) Umar Faruq Muttaqiin; Dian Marini; Nasyatal Ula Hawa Hazuwa; Dante Alighiri; Willy Tirza Eden
Jurnal Farmasi & Sains Indonesia Vol 1 No 1 (2018)
Publisher : LPPM Sekolah Tinggi Ilmu Farmasi Nusaputera

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Ikan Tongkol adalah bahan pangan yang mengandung gizi tinggi namun mudah mengalami proses pembusukan, sebagai usaha mencegah pembusukan, nelayan menggunakan pengawet sintesis formaldehyde (formalin). Formalin merupakan bahan yang berbahaya bagi tubuh manusia karena dapat menimbulkan iritasi, alergi, dan bersifat karsinogenik. Penelitian ini mengkaji tentang pengawetan alami pada ikan tongkol dengan etil laktat dari limbah ampas tebu. Limbah ampas tebu digunakan sebagai bahan dasar pembuatan asam laktat dari selulosa dan etil laktat. Selulosa diperoleh dengan cara hidrolisis menggunakan larutan H2SO4 2,2% selama 6 jam pada suhu 121oC. Hasil isolasi didapatkan selulosa sebesar 30,2%. Selulosa selanjutnya dihidrolisis untuk mendapatkan glukosa. Glukosa yang diperoleh difermentasi menggunakan bakteri Lactobacillus sp. selama 10 hari pada suhu 35oC untuk menghasilkan asam laktat dengan konsentrasi 88%. Asam laktat diesterifikasi lebih lanjut menggunakan metode refluks pada suhu 80oC-89oC selama 3 jam dengan katalis H2SO4. Produk yang dihasilkan dianalisis dengan FTIR. Karakteristik asam laktat dibuktikan dengan keberadaan serapan gugus karboksilat yang kuat di bilangan gelombang 1725,62 cm-1, sedangkan karakteristik etil laktat ditunjukkan dengan keberadaan serapan gugus ester pada bilangan gelombang 1581,96 cm-1. Pengawet alami ikan tongkol etil laktat ini dibuat dengan variasi kadar antara 0,5% hingga 5% dengan pelarut akuades dan penambahan propylen glycol sebagai emulsifier. Etil laktat diaplikasikan dengan cara disemprotkan dan dibiarkan. Aktivitas ethyl lactate sebagai pengawet ikan tongkol adalah pada konsentrasi 3% dengan hasil ikan mulai mengalami perubahan warna, rasa dan bau setelah dibiarkan di ruang terbuka selama 15 jam.
ISOLASI DAN KARAKTERISASI SENYAWA METABOLIT SEKUNDER DARI SERBUK KAYU MAHONI (Swietenia macrophylla King) Harjono; Iis Naeni Putri Wahyuni; Akhmad Darmawan; Dante Alighiri
Jurnal Farmasi & Sains Indonesia Vol 3 No 1 (2020)
Publisher : LPPM Sekolah Tinggi Ilmu Farmasi Nusaputera

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Abstract

Produk-produk alami telah banyak berkontribusi pada pengembangan obat obatan baru. Oleh karena itu, sangat penting untuk meneliti tanaman obat dan herbal untuk mengetahui kandungan senyawa bioaktifnya. Kayu mahoni (Swietenia macrophylla King), selain dimanfaatkan sebagai bahan pembuatan furniture, juga telah diketahui khasiatnya sebagai antimikroba, antioksidan, antidiabetes, anti inflamasi, analgesik, serta antijamur. Dalam penelitian ini, telah dilakukan ekstraksi serbuk kayu mahoni dan skrining fitokimia dari ekstrak metanolnya, yang menunjukkan kandungan senyawa flavonoid, saponin, alkaloid, dan tanin. Ekstrak metanol kemudian dipisahkan untuk mengisolasi senyawa tunggal dan karakterisasi senyawa. Isolasi senyawa dengan berbagai metode kromatografi dan karakterisasi senyawa dengan NMR menghasilkan senyawa ?-sitosteron yang termasuk ke dalam senyawa golongan steroid.
HIGH STRENGTH MANGO LEAF WASTE/POLYURETHANE COMPOSITE REINFORCEMENT USING QUARTZ MATERIAL Masturi, Masturi; Alighiri, Dante; Choirunnisa, Fadhillah; Kirana, Kurnia Galuh Candra
Spektra: Jurnal Fisika dan Aplikasinya Vol. 8 No. 1 (2023): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 8 Issue 1, April 2023
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.081.05

Abstract

Quartz stone contains silica components (SiO2) which have the ability as a reinforcement material for composite materials. Quartz SEM-EDX testing shows that the quartz silica comonent is 69%. Other components contained in quartz are 34% MgO and 2% CaO. Therefore, quartz stone is used as a reinforcing material in mango leaf waste composite materials. Meanwhile, compressive strength testing of composite materials was carried out with variations of Polyurethane (PU) polymers, namely 1, 2, 3, 4, 5, 6, and 7 grams, obtaining the highest maximum pressure at 6 grams polymer mass, which is 38.91 grams. Testing of composite materials that have been given a mixture of quartz stone with a mass of Polyurethane (PU) 6 grams and a quartz stone variation of 0.03; 0,06; 0,09; 0,12; 0,15; and 0.18 grams obtained the maximum power most optimally there is a quartz mass of 0.06 grams of 40.47 grams. The strength of mango leaf composite meets the strength standard for building materials, namely concrete with a value of 20-150 MPa. This shows that quartz stone can be a composite reinforcement comprehenent for mango leaf waste.
Pembelajaran Berbasis Riset untuk Meningkatkan Kemampuan Multipel Representasi Mahasiswa dalam Memahami Soal HOTS Drastisianti, Apriliana; Alighiri, Dante
Jurnal Komunikasi Pendidikan Vol 5 No 2 (2021): Jurnal Komunikasi Pendidikan
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/jkp.v5i2.1041

Abstract

Mahasiswa pendidikan kimia sebagai calon guru kimia harus menguasai kompetensi guru salah satunya kompetensi pedagogik. Upaya untuk membekali mahasiswa pendidikan kimia agar memiliki kompetensi tersebut salah satunya dengan membuat soal HOTS (Higher Order Thinking Skills) dalam proses pembelajaran. Penelitian ini merupakan penelitian pengembangan dan bertujuan untuk mengetahui kemampuan mahasiswa pendidikan kimia dalam membuat soal HOTS berbasis multipel representasi. Penelitian dilakukan dengan menggunakan prosedur pengembangan Borg & Gall yang berupa 10 tahap, tetapi dibatasi hanya sampai tahap 7. Pengambilan data dilakukan dengan lembar angket, uji coba soal, dan wawancara. Soal-soal yang dibuat oleh mahasiswa dikategorikan berdasarkan ranah kognitif taksonomi Bloom dan diperoleh 40 soal dengan rincian soal ranah C1 30%, C2 17,50%, C3 15%, C4 22,50%, C5 10%, dan C6 5%. Soal dengan kategori HOTS sebanyak 15 soal (37,50%). Soal  HOTS tersebut dianalisis lebih lanjut dan diperoleh reliabilitas sebesar 0,78 (tinggi) dan 11 soal memenuhi kriteria sehingga dapat digunakan. Kemampuan multipel representasi mahasiswa dalam menyusun soal HOTS mengalami peningkatan.
The Coating of Mahogany Leaves Composite Using Clove Leaf Essential Oil as An Anti-Fungal Ganoderma lucidum Masturi, Masturi; Alighiri, Dante; Anwar, Ahmad Faisal; Choirunnisa, Fadhillah; Kirana, Kurnia Galuh Candra
BERKALA SAINSTEK Vol 11 No 1 (2023)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v11i1.38066

Abstract

This work has been carried out to use clove leaf oil as a composite coating component having anti-fungal properties. The mushroom growth testing was carried out with minimum inhibitory concentration (MIC) testing with variations in concentrations of 0%, 0.2%, 0.4%, 0.6%, 0.8%, up to 1% and obtained MIC values of clove oil found at a concentration of 0.4% in inhibiting the growth of white-rot fungi. Ganoderma lucidum mushroom is used as a weathering fungus applied in composites. The results of SSD testing showed that the growth of Ganoderma lucidum fungus began to be inhibited in composites coated with clove oil with a concentration of 0.6%.FTIR testing showed the presence of hydroxyl group (O-H), methylene group (C-H), alkenyl (C=C), and aromatic ring (C=C-C), GC-MS test results showed clove oil containing 67.40% eugenol, 17.42% beta-caryophyllene, 2.91% isopropenyl acetate, 1.56% caryophyllene oxide and 0.91% alpha-copaene. Based on research data, it shows that clove leaf oil can be used as an anti-fungal coating component in composites.
Antibacterial Activity from Fraction of Liquid-Liquid Extraction in Temulawak Rhizome (Curcuma xanthorrhiza Roxb.) Alighiri, Dante; Firnanda, Indah Putri; Abdullah, Ravely Adhitya; Widodo, Naufaldi Bani; Drastisianti, Apriliana
Walisongo Journal of Chemistry Vol. 7 No. 2 (2024): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v7i2.23333

Abstract

The rhizome of Temulawak (Curcuma xanthorrhiza Roxb) has been traditionally used to treat various ailments due to its rich content of curcumin, demethoxycurcumin, and bisdemethoxycurcumin. These compounds exhibit notable antioxidant and antibacterial properties. This study aimed to evaluate the antibacterial efficacy of Temulawak rhizome extracts in n-hexane, ethyl acetate, and methanol, focusing on Escherichia coli and Staphylococcus aureus. The extraction process involved successive maceration with each solvent. The antibacterial activity was tested using well diffusion and microdilution methods, determining minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). Phytochemical screening revealed the presence of flavonoids, alkaloids, phenolics, steroids, and triterpenoids in the extracts. The results indicated that the n-hexane and ethyl acetate fractions exhibited intense antibacterial activity against Staphylococcus aureus, while all fractions showed potent activity against Escherichia coli. The MIC values ranged from 39.0625 to 625 ppm for Staphylococcus aureus and 39.0625 to 78.125 ppm for Escherichia coli, with MBC values generally higher than MIC values. These findings highlight the potential of Temulawak rhizome extracts as effective antibacterial agents.
Isolation and Antifungal Activity of Caryophyllene from Clove Leaf Oil (Syzygium aromaticum L.) on Mahogany Leaf Composites Alighiri, Dante
Science and Community Pharmacy Journal Vol. 1 No. 1 (2022): Science and Community Pharmacy
Publisher : STIKES Telogorejo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63520/scpj.v1i1.248

Abstract

Mahogany leaf composites mostly consist of cellulose which is easily weathered due to rotting fungi. One way to overcome this is to use anti-weathering chemicals. Chemical potential as a natural anti-weathering and abundant in Indonesia is caryophyllene compounds as a by-product in the eugenol industry which processes it from clove leaf oil. In this work, isolation and antifungal activity of caryophyllene from clove leaf oil on mahogany leaf composites was evaluated. Based on GC-MS analysis of clove leaf oil is known that eugenol and caryophyllene has yielded 42.83% and 23.87%, respectively. Selective extraction by using sodium hydroxide solution (2,5% NaOH, the ratio of oil to solution is 1:5) and fractional distillation under reduced pressure (Distillate fraction, DF P= -76 cmHg, R=5:1) and continued redistilled are needed to isolate of caryophyllene. Redistilled can improve the purity, then distillate collected while the temperature changed with a purity of 99.10%. Meanwhile, mahogany leaf composite has been successfully synthesized from mahogany leaves by using a polyurethane binder and glass fiber as reinforcement. Minimum inhibitory concentration (MIC) of caryophyllene was determined. The composite was coated with caryophyllene and evaluated for its antifungal activity against Aspergillus fumigatus. Observation using a CCD camera (Charge Couple Device) microscope with a magnification of 50x shows the growth of fungal spores on the composite surface. As a result, A. fumigatus can be inhibited by caryophyllene oil in a 1.2% concentration on mahogany leaf composite
Co-Authors - Jumaeri Abdullah, Ravely Adhitya Aisyah, Sabila Akhmad Darmawan Akhmad Darmawan Anis Susanti Anwar, Ahmad Faisal Azid, Saffanah Binti Mohd Ab Basyirun Budiyanto, Saraswati Putri Choirunnisa, Fadhillah Cici Fatmala Dewi, Arini Kusuma Dian Fithra Permana Dian Marini Dian Marini Drastisianti, Apriliana Edy Cahyono Eko Budi Susatyo Endang Susilaningsih Enni Suwarsi Ervan Bagus Haditya F Widhi Mahatmanti Fatmala, Cici Firnanda, Indah Putri Firstca Aulia Rachma Haditya, Ervan Bagus Harjono Humairoh, Lia Intan Iis Naeni Putri Wahyuni Iis Naeni Putri Wahyuni Imam Syafi’i Juwariyah, Putri Siti Karsinah - Kirana, Kurnia Galuh Candra Margareta Rahayuningsih Nugroho Edi K Masturi Masturi Mohammad Alauhdin, Mohammad Nasyatal Ula Hawa Hazuwa Nasyatal Ula Hawa Hazuwa Nina Oktarina Ningrum, Lis Setiyo Ni`ma, Neli Syahida Nugrahaningsih WH, Nugrahaningsih Nur Rahayu Utami Permatasari, Bella Pramesti, Citra Pratiwi Dwijananti Rahmaniar, Ranita Samuel Budi Wardhana Kusuma Savitri, Annisa Aulia Setyo Yuwono Sigit Priatmoko Sri Nurini Sri Wahyuni Sucipto, Lukman Suwarti Suwarti Syafi'i, Imam Syafi’i, Imam Tri Handayani Umar Faruq Muttaqiin Umar Faruq Muttaqiin Uswatun Hasanah Wawan Rustyawan Widodo, Naufaldi Bani widowati widowati Willy Tirza Eden, Willy Tirza Wiwik Kartika Sari Zaky, Adrian Maulana