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All Journal The Journal of Pure and Applied Chemistry Research EduChemia: Jurnal Kimia dan Pendidikan J-PEK (JURNAL PEMBELAJARAN KIMIA) JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Indonesian Journal of Chemistry JMM (Jurnal Masyarakat Mandiri) JCER (Journal of Chemistry Education Research) Makara Journal of Science J-PEK (Jurnal Pembelajaran Kimia)

Anugrah Ricky Wijaya

Universitas Negeri Malang

Author-ID : 549218

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Other

Published : 19 Documents Claim Missing Document

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Surface Behavior of Rhodamin and Tartrazine on Silica-Cellulose Sol-Gel Surfaces by Thin Layer Elution Surjani Wonorahardjo; Anugrah Ricky Wijaya; Suharti Suharti
The Journal of Pure and Applied Chemistry Research Vol 5, No 2 (2016)
Publisher : Chemistry Department, The University of Brawijaya

Physical and chemical interactions are the principles for different types of separation systems as the equillibrium dynamics on surface plays a key-role. Surface modification is a way for selective separation at interfaces. Moreover, synthesis of gel silica by a sol-gel method is preferred due to the homogeneity and surface feature easily controlled. Cellulose can be added in situ to modified the silica features during the process. Further application for to study interaction of rhodamin and tartrazine in its surface and their solubilities in mobile phase explains the possibility for their separation. This paper devoted to evaluate the surface behavior in term of adsorption and desorption of tartrazine and rhodamin on silica-cellulose thin layer in different mobile phase. Some carrier liquids applied such as methanol, acetone, n-hexane and chloroform. The result proves tartrazine and rhodamin is separated and have different behavior in different mobile phase. The retardation factors (Rf) of the mixtures suggest complexity behavior on silica-cellulose surface.

The development of Hand Sanitizer (HS) Production with Synthetic and Natural Scent Ingredients Anugrah Ricky Wijaya; Irma Kartika Kusumaningrum; Daratu Kusuma Eviana Putri; Bayu Kreshna Adhitya Sumarto; Abdillah Al Farraby; Yusron Risqy Maulana; Puspa Rahmadina Lestari
J-PEK (Jurnal Pembelajaran Kimia) Vol 6, No 2 (2021): J-PEK (JURNAL PEMBELAJARAN KIMIA)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v6i22021p109

The effort of developed hand sanitisers (HS) production is needed in the era of the Covid-19 pandemic. The improvement of HS in terms of colour, aroma sharpness, and hand comfort is very important in the consideration of users choosing the HS product used. The socialisation of this service aims to report community service in creating HS production on a scale of 6 L/30 minutes using Propeller Mixing Hand Sanitizer (PMHS) by testing color, aroma, and hand comfort using synthetic and natural materials with chemical technology processes. The addition of the aroma of natural ingredients from fruit, flowers or seeds using maceration techniques from strawberry fruit, jasmine flowers, green tea leaves, and coffee grounds were extracted by the natural aroma liquid, which were added to HS products. The addition of HS products with the aroma of natural ingredients from strawberry, jasmine, green tea, and coffee was compared to the synthetic aromas of strawberry, jasmine, green tea, and coffee obtained from perfume shops. The questionnaire test of 44 respondents consisting of lecturers, staff, administration, and students for HS products evaluated color, aroma sharpness, and hand comfort. The results show that the colour, sharpness of the aroma and a sense of comfort in the hands of HS products with synthetic aromas of jasmine and green tea are highly favoured by users. These results were recommended as a reference for the manufacture and distribution of HS aromas of jasmine and green tea on a large scale.REFERENCESKualitas Gel Pembersih Tangan (Handsanitizer) Dari Ekstrak Batang Pisang Dengan Penambahan Alkohol, Triklosan Dan Gliserin Yang Berbeda Dosisnya.” Bioeksperimen 4(2):61–70.Anugrah Ricky Wijaya, Yudhi Utomo, Sumari, and Irma Kartika Kusumaningrum. “Pembuatan Hand Sanitizer Menggunakan PMHS (Propeller Mixing Hand Sanitizer).”HKI: 2019Diah JuliantariD, Ni Putu, Luh Putu Wrasiati, and Ni Made Wartini. 2018. “karakteristik ekstrak ampas kopi bubuk robusta (coffea canephora) pada perlakuan konsentrasi pelarut etanol dan suhu maserasi.” Jurnal rekayasa dan manajemen agroindustri 6(3):243. doi: 10.24843/JRMA.2018.v06.i03.p08.Golin, Andrew P., Dexter Choi, and Aziz Ghahary. 2020. “Hand Sanitisers: A Review of Ingredients, Mechanisms of Action, Modes of Delivery, and Efficacy against Coronaviruses.” American Journal of Infection Control 48(9):1062–67. doi: 10.1016/j.ajic.2020.06.182.Nazma Sabrina Sani, Rofiah Racchmawati dan Mahfud. 2012. “Pengambilan Minyak Atsiri Dari Melati Dengan Metode Enfleurasi Dan Ekstraksi Pelarut Menguap.” Jurnal Teknik Pomits 1(1):1–4.Riza Ibnu Fajar, Luh Putu Wrasiati*, Lutfi Suhendra. 2018. “kandungan senyawa flavonoid dan aktivitas antioksidan ekstrak teh hijau pada perlakuan suhu awal dan lama penyeduhan.” Jurnal Rekayasa Dan Manajemen Agroindustri 6(3):196–202.Septiani Mangiwa, Agnes Eri Maryuni. 2020. “Pengaruh Metode Ekstraksi Terhadap Sifat Fisik Dan Kimia Ekstrak Biji Kopi Sangrai Jenis Arabika (Arabica Coffea) Asal Wamena Dan Lanny Jaya.” AVOGADRO Jurnal Kimia 4(1):31–40.Shabri dan Dadan Rohdiana. 2016. “Optimasi Dan Karakterisasi Ekstrak Polifenol Teh Hijau Dari Berbagai Pelarut.” Jurnal Penelitian Teh Dan Kina 19(1):57–66.Sulusi Prabawati, Endang D. A., Suyanti, dan Dondy ASB. 2002. “Perbaikan Cara Ekstraksi Untuk MeningkatkanRendemen Dan Mutu Minyak Melati.” Jurnal Hortikultura 12(4):270–75.

Model QSAR dari Turunan 3- tersubstitusi 4-Anilino Kumarin terhadap Aktivitas Anti-kanker Pankreas Daratu Eviana Kusuma Putri; Harno Dwi Pranowo; Anugrah Ricky Wijaya; Aman Santoso
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 5, No 1 (2021)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

Model Quantitative structure-activity relationship (QSAR) dari turunan 3-tersubstitusi 4-anilino kumarin terhadap aktivitasnya sebagai anti-kanker pankreas telah berhasil dibuat dan divalidasi. Struktur molekul turunan 3-tersubstitusi 4-anilino kumarin dan aktivitas biologisnya yang digunakan disitasi dari penelitian yang telah dilakukan oleh Luo dkk. (Luo et al., 2017). Setiap molekul turunan 3-tersubstitusi 4-anilino kumarin yang digunakan dioptimasi menggunakan metode kalkulasi DFT/BPV86 6-31G. Model analisis QSAR dibentuk menggunakan metode Multi Linear Regression (MLR) dan model terbaik yang didapatkan adalah: Log IC50 = 4,02 + (-7,126 x qC7) + (-5,709 x qC8) + (6,845 x qC18), n = 18; r2train = 0.701; r2test = 0.849, Fkal/Ftab = 3,269; SEE = 0.230.

The Effect of Temperature, Sulfonation, and PEG Addition on Physicochemical Characteristics of PVDF Membranes and Its Application on Hemodialysis Membrane Retno Ariadi Lusiana; Ayub Indra; Nor Basid Adiwibawa Prasetya; Nurwarrohman Andre Sasongko; Parsaoran Siahaan; Choiril Azmiyawati; Nanik Wijayanti; Anugrah Ricky Wijaya; Mohd Hafiz Dzarfan Othman
Indonesian Journal of Chemistry Vol 21, No 4 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.63740

Polyvinylidene fluoride (PVDF) membrane and its derivative have been investigated the permeation ability for creatinine and urea. The membrane was made by an inversion precipitation system in N,N-dimethyl acetamide (DMAc) and water as non-solvents. In this study, the modification of PVDF membrane permeability with PEG additives, CBT variations, and sulfonation was successfully carried out. The membrane solidification process was carried out on three variations of the coagulation bath temperature (CBT): 30, 45, and 60 °C. Eight types of membranes were characterized by using FT-IR and TGA/DSC, followed by the analysis of their porosity, hydrophilicity, water uptake, swelling degree, tensile strength, and permeability of creatinine and urea. The FT-IR spectra indicate that PVDF modification has been successfully carried out. The porosity, hydrophilicity, water uptake, and swelling degree values increase with the modification of functional groups. Furthermore, improvements in creatinine and urea permeability and clearances are achieved by increasing CBT and sulfonation in the PVDF/PEG membrane. The presence of sulfonate groups improves the membrane permeability through the interaction of intermolecular hydrogen with water and dialysate compounds. The existence of PEG as a porogen enhanced membrane porosity. Creatinine and urea clearance values increase from 0.29–0.58 and 6.38–20.63 mg/dL, respectively.

Isolasi dan Optimasi Transesterifikasi Minyak Biji Pepaya (Carica papaya) sebagai Sumber Energi Terbarukan Aman Santos; Farashinta Nadia; Rini Retnosari; Anugrah Ricky Wijaya; Sumari Sumari; Ihsan Budi Rachman
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 4, No 1 (2020)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

AbstrakLimbah biji pepaya Indonesia sebanyak 134.904,75 ton, mengandung minyak yang berpotensi ditransesterifikasi menjadi metal serta berpotensi sebagai biodiesel. Penelitian ini bertujuan untuk menentukan: (1) kondisi optimum sintesis biodiesel dengan dua tahapan reaksi, (2) karakter metil ester sintetis melalui transesterifikasi, dan (3) komponen metil ester sintetis serta potensinya sebagai biodiesel. Tahapan penelitian eksperimental laboratoris ini, yaitu: (1) ekstraksi minyak biji pepaya, (2) sintesis metil ester dari minyak biji pepaya, (3) karakterisasi metil ester sintetis dan uji potensi biodiesel meliputi penentuan densitas, viskositas, indeks bias, dan uji bilangan asam, dan (4) identifikasi komponen metil ester sintetis dengan GC-MS. Rendemen tertinggi metil ester sintetis diperoleh 75,82% b/b pada konsentrasi katalis KOH 1% b/b dengan karakteristik viskositas 4,76 cSt, massa jenis 0,85 g/mL, bilangan asam 0,70 mg KOH/g, dan indeks bias 1,44, maka metil ester sintetis telah memenuhi SNI 04-7182-2006 dan berpotensi sebagai biodiesel. Hasil uji GC-MS menunjukkan adanya metil palmitat 14,58%, metil oleat 78,87%, dan metil stearat 4,57%.

Optimasi pH dan Konsentrasi Elektrolit dalam Elektrokoagulasi Limbah Surfaktan Hanumi Oktiyani Rusdi; Surjani Wonorahardjo; Yudhi Utomo; Anugrah Ricky Wijaya
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 4, No 1 (2020)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

Surfactants are organic materials that act as active ingredients in detergents, soaps and shampoos which can reduce the surface tension of the water so that the particles attached to the materials being washed are released and float or dissolved in water thus polluting the environment. Therefor it is necessary to separate or change them into other harmless materials before being discharged into the environment. One of the methods used is electrocoagulation. The electrocoagulation method is an environmentally friendly method of treating liquid waste by combining the principles of coagulation, flotation and electrochemistry. In this study, the electrocoagulation method was carried out by varying pH and electrolyte concentrations in the simulated surfactant waste treatment. Surfactant levels were determined by spectrophotometer in methylene blue. The optimization of the method is done by determining the maximum absorption length, optimum pH, and the effect of adding electrolytes with different concentrations. The results showed that the maximum absorption at a wavelength of 659 nm. The electrocoagulation process runs optimally at pH 2 with the addition of 7mM Na2SO4 electrolyte resulting in a% removal of 65%.

Physicochemical Changes and Role of Analytical Chemistry in Black Garlic (Allium sativum L.) Processing Wonorahardjo, Surjani; Sari, Dian Puspita; Salsabila, Arini; Estiyawati, Estiyawati; Yuliani, Dewi; Wijaya, Anugrah Ricky; Suharti, Suharti; Kusumaningrum, Irma Kartika; Maharani, Chariztya Anggita; Noviyanti, Thjiong Angelina
Makara Journal of Science Vol. 27, No. 2
Publisher : UI Scholars Hub

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

Black garlic is a traditional spice having potential of herbal medicine; however, continuous heating darkens its color and changes its taste due to chemical processes and new equilibrium in the system. In this study, fresh garlic was processed into black garlic at 60 °C for 24 days. Changes in physical and chemical parameters, such as browning and protein content, reducing sugar content, and antioxidative components were recorded. Protein content was measured by Kjeldahl method, brown color development was analyzed using a color reader, reducing sugar was examined using a dinitro salicylic DNS reagent, and antioxidative activities were studied with a diphenyl picrylhydrazyl DPPH reagent in terms of their percent inhibition. Gas chromatography – mass sepctrometry (GC–MS) and Liquid Chromatography-High Relosultion Mass Spectrometry (LC–HRMS) were performed to determine the chemical profiles. Results showed a number of interesting features. The protein and sugar contents increased up to 3 and 4 times that of the initial values, respectively during processing. The antioxidative properties improved in the later stages. The chemical profiles of volatile and nonvolatile components were altered in their final stage. Sulfur and nitrogen-containing nonvolatile components were relatively stable during heating, but their compositions changed. The natural chemical changes reflect the biological potential dynamics in biological processes as herbal supplements. The reflection of the processes might go further into food chemistry and the food industry. This needs an interdisciplinary approach, expanded to biological concepts and safe, ethical industrial processes.

Learning, Teaching, and Demonstration of Unique Chemistry for the Indonesian Generation at Sanggar Bimbingan Mulia, Kuala Lumpur Malaysia Wijaya, Anugrah Ricky; Putra, Helwani Fuadi Sujoko; Syah, Alif Alfarisyi; Kusumaningrum, Irma Kartika; Syavika, Lukluatus
J-PEK (Jurnal Pembelajaran Kimia) Vol 8, No 2 (2023): J-PEK (JURNAL PEMBELAJARAN KIMIA)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v8i22023p58-64

As a form of concern for the issues faced by the descendants of Indonesian nationals in Malaysia, especially for the Human Resources, we provide the unique theoretical and practical chemistry mentorship for future capability. Sanggar Bimbingan Sungai Mulia 5 is an organization that offers educational services for Indonesian descendants whose citizenship status is still unclear due to administrative reasons. Based on the Chemistry Department UM and Sanggar Bimbingan Mulia cooperation, It is important to enhance the nation's intellectual capacity, especially in ensuring the success of the mandatory 9-year education program. This community service aims to combat illiteracy, in still character education, and prepare students for higher education. The expected outcomes of this program is a unique chemistry Massive Open Online Course (MOOC), a service article published, a service report, and a poster. Our program successfully developed the interest of children to love a simple chemistry experiment and improved for reading and learning through various MOOC, books, and educational materials.

Chemistry Study and Entrepreneurship Program for the younger generation at Sanggar Bimbingan Sentul, Kuala Lumpur Malaysia Wijaya, Anugrah Ricky; Syah, Alif Alfarisyi; Putra, Helwani Fuadi Sujoko; Kusumaningrum, Irma Kartika; Pramesti, Indah Nur
J-PEK (Jurnal Pembelajaran Kimia) Vol 8, No 2 (2023): J-PEK (JURNAL PEMBELAJARAN KIMIA)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v8i22023p65-71

The issues faced by the sons and daughters of Indonesian citizens (WNI) in Malaysia are social inequality, access to education, and a sense of community involvement. Sanggar Bimbingan Sentul, as a partner, provides learning facilities for WNI's children to solve these three main problems. We initiated to apply the program of MAWIRAKI (Matahari Kewirausahan Kimia) with chemistry study and entrepreneurship program through the Pengabdian Kemitraan Luar Negeri (PKLN) grant by Universitas Negeri Malang (UM). This program integrated by computer training with MS-Word and Paint programs, chemistry daily-life experiments, and the art of batik craft. The results of learning process WNI's children shows that 18 favored students in the Paint program and 10 in the MS Word program during computer training. The "Where's Vitamin C" experiment garnered support from 17 students, highlighting an interest in chemistry study. These activities involved the batik ecoprint and jumput, which received a positive response, with 15 students favoring batik jumputan and 11 choosing batik ecoprint. The WNI's children interest data during the learning process as the foundation and our spirit for developing programs to unearth the entrepreneurial potential and creativity of the younger generation.

Improving Student's Critical Thinking Ability Using Argument-Drivent Inquiry Approach in Thermochemistry Purwandari, Intan Diah; Muntholib; Anugrah Ricky Wijaya
JCER (Journal of Chemistry Education Research) Vol. 7 No. 2 (2023): Volume 7 No. 2 December 2023
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v7n2.p243-251

This study aimed to investigate the impact of the Argument-Driven Inquiry instruction (ADI-Based Instruction) in thermochemistry on students' critical thinking skills. This study applied the one group pretest-posttest type of pre-experiment design. The subjects of this study were 71 eleven grade students of Public Senior High School of Ambulu Jember on academic year of 2022/2023. The instrument, namely the critical thinking ability test on thermochemistry, was developed by the researchers based on Ennis' critical thinking ability framework. This test consists of 10 valid items with a Cronbach's Alpha reliability of 0.782. The results showed that thermochemistry instruction carried out using ADI instructional model improve students' critical thinking skills with an N-gain of 0.731 (high category) and Cohen's d-effect size of 1.023 (large effect category) with an intermediate reliability of 0.619 (good categories). These results indicate that ADI-based instruction on thermochemistry can improve students' critical thinking skills. The implication of this study is that ADI-based instruction can be applied to other subjects who have the same characteristics of thermochemistry, namely having contextual, factual, conceptual, procedural, and metacognitive knowledge.

Co-Authors Abdillah Al Farraby Ahmad Sururi Ahmad Taufiq Alif Alfarisyi Syah Alvin Annayya Habibah Alvin Annayya Habibah Aman Santos Aman Santoso Amara, Aulia Angga Dheta Shirajjudin Aji Anggarani, Dinar Arsy Anie Yulistyorini Arabillah, Zulfikar Wildan Ayub Indra Bayu Kreshna Adhitya Sumarto Choiril Azmiyawati Daratu Kusuma Eviana Putri Dewi Yuliani, Dewi Dewinta Yuka Siwi Dhinarty Umi Rachmawaty Dian Puspita Sari Dima Vici Nadia Ariefianti Dima Vici Nadia Ariefianti Eli Hendrik Sanjaya Endang Budiasih Estiyawati, Estiyawati Fadhil Md Din, Mohd Farashinta Nadia Fatmah Khairani Hanumi Oktiyani Rusdi Harno Dwi Pranowo Hartinah Pratiwi Hartinah Pratiwi Hendra Susanto Hengky Pamungkas, Yahya Hong Chen I Wayan Dasna Indah Nur Pramesti Intan Ainul Malik Jayawarsa, A.A. Ketut Khoiril Amin Kurnia Larasati Kurnia Larasati Kusfianti, Anisa Aulia Kusumaningrum, Irma Kartika Li, Yu-You Maharani, Chariztya Anggita Mohd Hafiz Dzarfan Othman Muhammad Roy Asrori Muntholib Munzil Nanik Wijayanti Nor Basid Adiwibawa Prasetya Novida Pratiwi Noviyanti, Thjiong Angelina Nur Atikah Nurbani Jusuf Nurwarrohman Andre Sasongko Parsaoran Siahaan Purwandari, Intan Diah Puspa Rahmadina Lestari Putra, Helwani Fuadi Sujoko Rachman, Ihsan Budi Rachmawaty, Dhinarty Umi Ratna Yunita Setiyani Subardjo Retno Ariadi Lusiana Retnosari, Rini Rizky, M Salsabila, Arini Suharti Sumari Sumari Surjani Wonorahardjo Syah, Alif Alfarisyi Syavika, Lukluatus Wulan Ratia Ratulangi Yudhi Utomo Yusron Risqy Maulana Zahra Firdaus

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