Article Per Year (5 Year)
p-Index From 2021 - 2026
3.147
P-Index
This Author published in this journals
All Journal International Journal of Advances in Applied Sciences Alchemy : Journal of Chemistry Jurnal IPTEK KOVALEN: Jurnal Riset Kimia Chemistry in Education Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan JKTP: Jurnal Kajian Teknologi Pendidikan Jurnal Administrasi dan Manajemen Pendidikan Chemistry Indonesian Journal of Chemical Research Jurnal Fisika : Fisika Sains dan Aplikasinya Fullerene Journal of Chemistry Stannum : Jurnal Sains dan Terapan Kimia JAMP : Jurnal Administrasi dan Manajemen Pendidikan Indonesian Journal for Social Responsibility Journal of Engineering Science and Technology Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS) International Journal of Islamic Khazanah
Muhammad Roy Asrori
Universitas Negeri Malang
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

Published : 21 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 21 Documents
Search

 1   2   3 
Profil Kebutuhan dan Pemetaan Pemahaman Pelaku Pendidikan SMAN 3 Sidoarjo terhadap Asesmen Kompetensi Minimum Rokhim, Deni Ainur; Agustina, Nur Indah; Asrori, Muhammad Roy; Putra, Moch Chesa Nur Hidayat Arif; Amalia, Firda; Habiddin, Habiddin; Peni, Ristiwi; Wahyudi, Bambang; Wahyudi, Asnan; Putra, Arif
JAMP : Jurnal Administrasi dan Manajemen Pendidikan Vol 6, No 2 (2023): Volume 6 No 2 Juni 2023
Publisher : Universitas Negeri Malang

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

Abstract

Abstract: Minimum Competency Assessment (AKM) is an assessment of the essential competencies needed by all students to develop their capacity and participate positively in society. The AKM component consists of literacy and numeracy. This study aims to determine the needs and understanding of education actors at SMAN 3 Sidoarjo towards AKM. The research method used is a qualitative survey method. The data collection process was carried out by distributing research questionnaires to 30 students and 25 teachers at SMAN 3 Sidoarjo. The results showed that AKM is very important and needed by both teachers and students because AKM can improve teacher and student competencies, both literacy and numeracy competencies. Teachers' and students' understanding of AKM showed a general level of understanding without any misconceptions. Therefore, teachers and students make careful preparations in dealing with AKM. Keywords: Minimum Competency Assessment; Literacy; Numeracy Abstrak: Asesmen Kompetensi Minimum (AKM) adalah penilaian kompetensi mendasar yang diperlukan oleh semua siswa untuk mampu mengembangkan kapasitas diri dan berpartisipasi positif pada masyarakat. Komponen AKM terdiri dari literasi dan numerasi. Penelitian ini bertujuan untuk mengetahui kebutuhan dan pemahaman pelaku pendidikan SMAN 3 Sidoarjo terhadap AKM. Metode penelitian yang digunakan adalah metode kualitatif survei. Proses pengembilan data dilakukan dengan membagikan angket penelitian kepada 30 siswa dan 25 guru semua mata pelajaran di SMAN 3 Sidoarjo. Hasil penelitian menunjukkan bahwa AKM sangat penting dan dibutuhkan baik oleh guru maupun murid karena AKM dapat meningkatkan kompetensi guru dan siswa baik kompetensi literasi maupun numerasi. Pemahaman guru dan murid tentang AKM menunjukkan tingkat pemahaman yang umum tanpa miskonsepsi. Oleh karena itu, guru dan siswa melakukan persiapan yang matang dalam menghadapi AKM. Kata kunci: Asesmen Kompetensi Minimum; Literasi; Numerasi
Biodiesel Characterization Study from Castor Oil (Jatropha Curcas L) with CaO/K2O Catalyst Santoso, Aman; Sumari, Sumari; Asrori, Muhammad Roy; Januarti, Wenny
Jurnal IPTEK Vol 27, No 2 (2023): December
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2023.v27i2.4188

Abstract

Biodiesel is still being developed as a renewable fuel to replace a diesel fuel. Biodiesel production of castor oil has high potential because the oil did not compete with foods. Furthermore, a transesterification process can be optimized by heterogeneous base catalysts. Thus, this study aims to: (1) synthesize CaO/K2O catalysts to be used in the transesterification process, (2) synthesize biodiesel of castor oil and characterize it according to SNI 7182:2015, and (3) study the effect of CaO/K2O variations on biodiesel product. This laboratory experimental research was carried out in the following stages: (1) characterization of castor oil, (2) esterification, (3) preparation of CaO/K2O catalyst, (4) transesterification, and (5) characterization of the synthesized methyl ester. The results showed that the characterization of castor oil included a density of 1.074 g/mL, an acid number of 9.5 mg/g, a free fatty acid (FFA) of 5.09%, and a viscosity of 701 cSt. Stratified esterification and transesterification showed a significant effect on reducing FFA, so the characterization of the transesterified methyl ester from the best catalyst variations (CaO/K2O 1:2) included a density of 1.016 g/mL, an acid number of 1.1 mg/g, FFA content of 0.58%, moisture content of 1.1%, viscosity 43.55 cSt, and refractive index (25) of 1.466.
Synthesis of Biodiesel from Refined Waste Cooking Oil with Active Natural Zeolite Santoso, Aman; Sumari, Sumari; Asrori, Muhammad Roy; Wele, Amonius Regino
Indonesian Journal of Chemical Research Vol 11 No 3 (2024): Edition for January 2024
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2024.11-ama

Abstract

This research evaluates refining waste cooking oil with active natural zeolite, utilizes it for biodiesel synthesis, and characterizes the synthesized methyl ester. This experimental laboratory research was carried out: (1) activation of natural zeolite, (2) refining waste cooking oil with active natural zeolite, (3) determination of free fatty acid (FFA) content of the oil, (4) transesterification with KOH catalyst, (5) characterization of the synthesized methyl esters according to the SNI 7182:2015, and (6) identification of the methyl ester component by GC-MS. The results showed that the FFA content of the refined waste cooking oil using active natural zeolite with concentrations of 10%, 20%, and 30% per mass of oil were 2.97, 2.0, and 1.56%, respectively. The yield of methyl ester transesterified with various concentrations of KOH (0.8, 1.0, and 2% per mass of oil), respectively, were 80.13, 85.34, and 74.98%. The synthesized methyl ester resulted in the characteristics: 0.867 g/mL of density; 5.72 cSt of viscosity; 1.449 of refractive index; 1.46 g KOH/g of acid number; and 0.023% of water content. Identification of GC-MS obtained the synthesized methyl esters, which include: 46.10% of methyl hexadecanoic, 41.68% of methyl 9-octadecanoic, 6.42% of methyl octadecanoic, and 5.80% of methyl eicosanoic.
Pengaruh Jenis Alkohol pada Sintesis Alkil Ester dari CPO melalui Reaksi Transesterifikasi Menggunakan Katalis Heterogen CaO-MgO Santoso, Aman; Rizky, M; Sumari, Sumari; Wijaya, Anugrah Ricky; Retnosari, Rini; Asrori, Muhammad Roy
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 5 No. 1 (2021)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rbaet.2021.005.01.01

Abstract

Low quality CPO can be made alkyl esters by transesterification reaction by alcohol. The type of alcohol that is often used in the transesterification reaction is methanol but is toxic, so we need an alternative type of alcohol. The purpose of this research is the synthesis of alkyl esters from CPO through transesterification reaction using heterogeneous catalyst CaO-MgO with different types of alcohol. This experimental laboratory research through stages:  CPO refinement, activation of CaO-MgO catalysts,  synthesis of alkyl esters from CPO with two types alcohol, identification of the components of the synthesis compound of the synthesized alkyl ester mixture using GC-MS. The results showed that (1) alkyl esters can be synthesized from CPO through the transesterification reaction with methanol and CaO-MgO catalysts with a yield of 85.72%, while the transformation of ethanol is difficult to form ethyl ether (2) the character of methyl ester synthesized has a density 0.86 g / mL, viscosity 3.23 cSt, refractive index 1.44819, and acid number 0.747 mg KOH / g methyl ester, (3) the main component of the synthesized alkyl ester contains 1,200% methyl myristic compound, methyl palmitate 40,637% methyl linoleate 9.332%, methyl 7-octadecenoate 42.986%, and methyl stearate 4.427%.
Concentration Effect of MgO/K2O Catalyst on Transesterification of Castor Seed (Ricinus communis) Oil Aman Santoso; Sumari Sumari; Muhammad Roy Asrori; Irsyadatun Ni’mah
Stannum : Jurnal Sains dan Terapan Kimia Vol 6 No 2 (2024): October 2024
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v6i2.4692

Abstract

Fatty acid methyl esters can be obtained from the synthesis of vegetable oil with methanol using a base catalyst. Vegetable oil has the potential as biodiesel feedstock, the methyl ester character of various vegetable oils is different as from castor seed oil. Synthesis of methyl esters by transesterification reaction with the addition of a heterogeneous catalyst, namely MgO/K2O. The purpose of this study was to synthesize methyl esters from castor seed oil with MgO/K2O catalyst and to determine the yield and character. The research went through 6 stages which included (1) isolation of castor seed oil, (2) determination of free fatty acid (ALB) levels of castor seed oil, (3) manufacture of MgO/K2O catalyst (4) esterification of castor seed oil with H2SO4 catalyst (5) transesterification of jatropha seed oil with methanol and various variations in the concentration of the catalyst MgO/K2O 1%, 2%, 3%, (6) characterization of the synthesized methyl ester which includes tests of density, viscosity, acid number, refractive index and moisture content. The results showed that the concentration of MgO/K2O had an effect on the synthesis of methyl esters from castor seed oil, where the optimization condition was achieved at a concentration of 2% MgO/K2O with a yield of 97.99%. The methyl ester character which is synthesized from castor seed oil with a 2% MgO/K2O catalyst is having a density of 1.0244 g/mL, a viscosity of 22.531 cSt, an acid number of 2.81 g KOH/g methyl ester, a refractive index of 1.456, and a moisture content. 0.035%.
Profil Kebutuhan dan Pemetaan Pemahaman Pelaku Pendidikan SMAN 3 Sidoarjo terhadap Asesmen Kompetensi Minimum Rokhim, Deni Ainur; Agustina, Nur Indah; Asrori, Muhammad Roy; Putra, Moch Chesa Nur Hidayat Arif; Amalia, Firda; Habiddin, Habiddin; Peni, Ristiwi; Wahyudi, Bambang; Wahyudi, Asnan; Putra, Arif
JAMP : Jurnal Administrasi dan Manajemen Pendidikan Vol 6, No 2 (2023): Volume 6 No 2 Juni 2023
Publisher : Universitas Negeri Malang

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

Abstract

Abstract: Minimum Competency Assessment (AKM) is an assessment of the essential competencies needed by all students to develop their capacity and participate positively in society. The AKM component consists of literacy and numeracy. This study aims to determine the needs and understanding of education actors at SMAN 3 Sidoarjo towards AKM. The research method used is a qualitative survey method. The data collection process was carried out by distributing research questionnaires to 30 students and 25 teachers at SMAN 3 Sidoarjo. The results showed that AKM is very important and needed by both teachers and students because AKM can improve teacher and student competencies, both literacy and numeracy competencies. Teachers' and students' understanding of AKM showed a general level of understanding without any misconceptions. Therefore, teachers and students make careful preparations in dealing with AKM. Keywords: Minimum Competency Assessment; Literacy; Numeracy Abstrak: Asesmen Kompetensi Minimum (AKM) adalah penilaian kompetensi mendasar yang diperlukan oleh semua siswa untuk mampu mengembangkan kapasitas diri dan berpartisipasi positif pada masyarakat. Komponen AKM terdiri dari literasi dan numerasi. Penelitian ini bertujuan untuk mengetahui kebutuhan dan pemahaman pelaku pendidikan SMAN 3 Sidoarjo terhadap AKM. Metode penelitian yang digunakan adalah metode kualitatif survei. Proses pengembilan data dilakukan dengan membagikan angket penelitian kepada 30 siswa dan 25 guru semua mata pelajaran di SMAN 3 Sidoarjo. Hasil penelitian menunjukkan bahwa AKM sangat penting dan dibutuhkan baik oleh guru maupun murid karena AKM dapat meningkatkan kompetensi guru dan siswa baik kompetensi literasi maupun numerasi. Pemahaman guru dan murid tentang AKM menunjukkan tingkat pemahaman yang umum tanpa miskonsepsi. Oleh karena itu, guru dan siswa melakukan persiapan yang matang dalam menghadapi AKM. Kata kunci: Asesmen Kompetensi Minimum; Literasi; Numerasi
Analysis of ice creams from goat milk kefir and red dragon fruit Santoso, Aman; Radiati, Lilik Eka; Damayanthi, Evy; Armaini, Armaini; Mujahidah, Amiroh Nabilah; Sanjaya, Eli Hendrik; Muntholib, Muntholib; Asrori, Muhammad Roy
International Journal of Advances in Applied Sciences Vol 14, No 2: June 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v14.i2.pp481-489

Abstract

Ice cream from goat milk kefir is lower lactose than cow milk kefir. Combining goat milk kefir with red dragon fruit in ice cream formulations can improve the quality of the product. This study aims to determine the sensory characteristics, total solid, total flavonoid, and antioxidant activity of goat kefir-based ice cream flavored red dragon fruit as quality evaluation. The study used a completely randomized design with 4 treatments and 3 replications. The treatment was the ratio of goat kefir and dragon fruit, including 40:60, 50:50, 60:40, and 70:30 in the ice cream mixture. 30 panelists participated in the organoleptic test. Total solid testing referred to SNI 01-3713-1995. Determination of total flavonoid content was carried out by forming AlCl3 complexes spectrophotometrically and assaying antioxidant activity used 2.2-diphenyl-1-picrylhydrazyl (DPPH) method. The results showed that there was no significant difference in the organoleptic test for taste, color, and texture. The results of the total solids test showed that the higher the addition of goat kefir to ice cream, the lower the total solids produced. While the addition of goat kefir increased the total flavonoids in ice cream. The antioxidant activity with the best formulation of 50:50 was categorized as moderate level, which is 136.59 ppm.
Concentration Effect of MgO/K2O Catalyst on Transesterification of Castor Seed (Ricinus communis) Oil: Pengaruh Konsentrasi Katalis MgO/K2O pada Transesterifikasi Minyak Biji Jarak (Ricinus communis) Santoso, Aman; Sumari, Sumari; Asrori, Muhammad Roy; Ni’mah, Irsyadatun
Stannum : Jurnal Sains dan Terapan Kimia Vol 6 No 2 (2024): October 2024
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v6i2.4692

Abstract

Fatty acid methyl esters can be obtained from the synthesis of vegetable oil with methanol using a base catalyst. Vegetable oil has the potential as biodiesel feedstock, the methyl ester character of various vegetable oils is different as from castor seed oil. Synthesis of methyl esters by transesterification reaction with the addition of a heterogeneous catalyst, namely MgO/K2O. The purpose of this study was to synthesize methyl esters from castor seed oil with MgO/K2O catalyst and to determine the yield and character. The research went through 6 stages which included (1) isolation of castor seed oil, (2) determination of free fatty acid (ALB) levels of castor seed oil, (3) manufacture of MgO/K2O catalyst (4) esterification of castor seed oil with H2SO4 catalyst (5) transesterification of jatropha seed oil with methanol and various variations in the concentration of the catalyst MgO/K2O 1%, 2%, 3%, (6) characterization of the synthesized methyl ester which includes tests of density, viscosity, acid number, refractive index and moisture content. The results showed that the concentration of MgO/K2O had an effect on the synthesis of methyl esters from castor seed oil, where the optimization condition was achieved at a concentration of 2% MgO/K2O with a yield of 97.99%. The methyl ester character which is synthesized from castor seed oil with a 2% MgO/K2O catalyst is having a density of 1.0244 g/mL, a viscosity of 22.531 cSt, an acid number of 2.81 g KOH/g methyl ester, a refractive index of 1.456, and a moisture content. 0.035%.
Analisis Mineral dari Lumpur di Pulau Lusi sebagai Sumber Silika Islamiyah, Kafita Krisnatul; Asrori, Muhammad Roy; Rokhim, Deni Ainur; Minata, Zelen Surya; Nenohai, Jacky Anggara; Ciptawati, Endang
ALCHEMY:Journal of Chemistry Vol 13, No 2 (2025): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v13i2.20452

Abstract

Pulau Lusi (Lumpur Sidoarjo) merupakan suatu pulau yang dijadikan sebagai tempat pembuangan akhir aliran lumpur lapindo yang dibuang ke sungai porong. Pulau ini dijadikan sebagai salah satu bukti adanya fenomena ekologi semburan lumpur akibat kegiatan eksplorasi di daerah Porong, Sidoarjo, Jawa Timur yang mengakibatkan kerugian finansial maupun korban jiwa. Tujuan penulisan artikel ini untuk menganalisis kandungan mineral dalam lumpur di Pulau Lusi sehingga dapat dimanfaatkan di berbagai bidang sesuai karakteristiknya. Pertama-tama sampel lumpur harus dipreparasi terlebih dahulu hingga menjadi serbuk halus. Kemudian sampel dianalisis menggunakan metode XRD dan XRF untuk mengidentifikasi kandungan mineral baik dalam bentuk unsur maupun oksidanya. Berdasarkan hasil analisis, dapat disimpulkan bahwa Lumpur di Pulau Lusi berpotensi dijadikan sebagai sumber silika. Hasil analisis menggunakan XRF dan XRD menunjukkan bahwa kandungan mineral di kedua tempat relatif sama. Kandungan senyawa oksida yang paling besar adalah silika dengan persentase masing-masing 46,3% (di tengah Pulau Lusi) dan 44,7% (di pinggir Pulau Lusi). Hasil analisis XRD menunjukkan bahwa fase kristal yang paling dominan pada masing-masing sampel adalah fase Quartz. Agar mineral tersebut dapat dimanfaatkan secara optimal, maka sampel lumpur harus diolah untuk menghilangkan pengotor - pengotor, meningkatkan kemurnian mineral, meningkatkan kemampuan absorpsi, dllKata Kunci: Lumpur Lapindo; Pulau Lusi; Mineral Silika; Karakterisasi Mineral
Perbandingan Metode Maserasi dan Microwave-Assisted Extraction pada Daun Beluntas dengan Variasi Pelarut dan Uji Antioksidan: Comparison of Maceration and Microwave-Assisted Extraction on Beluntas Leaves with Variation of Solvent and Antioxidant Test Utomo, Yudhi; Chairini, Nur; Asrori, Muhammad Roy
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 1 (2023): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i1.16155

Abstract

Beluntas leaves (Pluchea indica L.) as Indonesian herbal plants contain secondary metabolites such as flavonoids. Beluntas leaf parts can be used as medicine. The content of secondary metabolites in Beluntas leaves acts as a natural antioxidant. Beluntas leaf extraction has not been optimal so far. Microwave assisted extraction can increase the yield. This research aims to study the effect of giving different types of solvents of extraction on Beluntas leaves on the levels of flavonoids and the resulting antioxidant activity, and determine the profile of Beluntas leaf extraction results based on comparative trials of the maceration method and MAE (microwave-assisted extraction). This research was conducted in 4 stages: (1) sample preparation of dried Beluntas leaves, (2) extraction by maceration with various types of solvents n-hexane, ethyl acetate, and 70% ethanol, (3) the characteristics of the flavonoid compounds, namely the qualitative test and the quantitative test with AlCl3, and (4) the measurement of antioxidant activity in Beluntas leaf extract using the DPPH method. The results of this study obtained a total flavonoid content of 4.23 mgQE/g which was the result of maceration of the ethyl acetate solvent extract (yield: 5.09%), and all Beluntas leaf extracts in ethyl acetate solvent were included in the category of very strong antioxidant activity with an IC50 value of 31.68 μg/mL.
Co-Authors Agustina, Nur Indah Ahmad Faikul Anam Ahmad Nashih Anis Zubaidy Aman Santoso Anam, Ahmad Faikul Andyka Medarda Pradana Anugrah Ricky Wijaya Armaini, Armaini Bambang Wahyudi Chairini, Nur Ciptawati, Endang Deni Ainur Rokhim Dinar Rachmadika Baharintasari Dinar Rachmadika Baharintasari Eli Hendrik Sanjaya Evy Damayanthi Firda Amalia Fitriyah, Zakiyatul Habiddin Hayuni Retno Widarti Irsyadatun Ni’mah Islamiyah, Kafita Krisnatul Januarti, Wenny Lilik Eka Radiati Mahmudah, Siti Nur Mujahidah, Amiroh Nabilah Muntholib Nenohai, Jacky Anggara Ni’mah, Irsyadatun Peni, Ristiwi Prakasa, Yana Fajar Putra, Arif Putra, Moch Chesa Nur Hidayat Arif Retnosari, Rini Rizky, M Sinta Nur Laila Sumari Sumari Wahyudi, Asnan Wele, Amonius Regino Yana Fajar Prakasa Yana Fajar Prakasa Yudhi Utomo Zakiyatul Fitriyah Zelen Surya Minata Zubaidah R, Zubaidah Zubaidah Zubaidah Zubaidy, Ahmad Nashih Anis