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All Journal Jurnal Teknologi Dan Industri Pangan EKSAKTA: Journal of Sciences and Data Analysis JURNAL KIMIA SAINS DAN APLIKASI Pharmaciana: Jurnal Kefarmasian Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Indonesian Journal of Cancer Chemoprevention Eksergi: Chemical Engineering Journal Jurnal Rekayasa Sipil dan Desain Jurnal Kimia dan Kemasan agriTECH Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Majalah Obat Tradisional EduChemia: Jurnal Kimia dan Pendidikan Jurnal Kimia Riset Dental Journal (Majalah Kedokteran Gigi) Jurnal Bioteknologi & Biosains Indonesia (JBBI) Titian Ilmu: Jurnal Ilmiah Multi Sciences ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Jurnal Aplikasi Teknologi Pangan Berdikari: Jurnal Pengabdian Masyarakat Indonesia Indonesian Journal of Chemical Analysis (IJCA) JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Ilmiah Cendekia Eksakta Stannum : Jurnal Sains dan Terapan Kimia IJCR (Indonesian Journal of Chemical Research) STATIKA: Jurnal Teknik Sipil Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat Gunung Djati Conference Series AGRIC Rafflesia Journal of Natural and Applied Sciences (RJNAS) Biosaintifika: Journal of Biology & Biology Education Journal of Tropical Pharmacy and Chemistry

Yohanes Martono

Universitas Kristen Satya Wacana

Author-ID : 316681

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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Pengaruh Penambahan Asam Galat Sebagai Kopigmen Antosianin Murbei Hitam (Morus nigra L.) terhadap Stabilitas Termal Yoko Putra Nusantara; Lydia Ninan Lestario; Yohanes Martono
agriTECH Vol 37, No 4 (2017)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The purposes of this research were to determine the effect of copigmentation of mulberry anthocyanin with gallic acid towards thermal and to determine the optimal molar ratio of anthocyanin: gallic acid to stabilize the mulberry anthocyanin. The variation of treatments on this research were molar ratio of mulbery anthocyanin: gallic acid: 1:0; 1:25; 1:50; 1:75; 1:100 which were heated at 60 °C, 70 °C, 80 °C, and 90 °C. After heated, the colour intensity were measured every 45 minutes at 60 °C, 30 minutes at 70 °C, 30 minutes at 80 °C, and 20 minutes at 90 °C. The measurement was conducted on wavelength 512 nm for uncopigmented anthocyanin and 514 nm for copigmented anthocyanin using Spectrophotometer UV-VIS. The result showed that copigmentation could increase the thermal stability of mulberry anthocyanin. Copigmentation could increase the activation energy and half life. The optimal molar ratio of anthocyanin: copigment was 1:75, while the energy of activation was 65.20 kJ/mole. ABSTRAKTujuan penelitian ini adalah untuk menentukan efek kopigmentasi antosianin murbei dengan asam galat terhadap panas dan menentukan rasio molar antosianin: asam galat yang optimal untuk menstabilkan antosianin murbei. Variasi perlakuan penelitian ini adalah rasio molar antosianin: asam galat: 1:0; 1:25; 1:50; 1:75; 1:100 yang dipanaskan pada suhu 60 °C, 70 °C, 80 °C, dan 90 °C. Setelah pemanasan selesai, dilakukan pengukuran intensitas warna setiap 45 menit pada suhu 60 °C, 30 menit pada suhu 70 °C, 30 menit pada suhu 80 °C, dan 20 menit pada suhu 90 °C. Pengukuran dilakukan pada panjang gelombang 512 nm pada antosianin yang tidak terkopigmentasi dan 514 nm pada antosianin yang terkopigmentasi dengan menggunakan Spektrofotometer UV-VIS. Hasil penelitian menunjukkan bahwa kopigmentasi meningkatkan stabilitas antosianin murbei terhadap panas. Kopigmentasi dapat meningkatkan energi aktivasi dan waktu paruh. Rasio molar optimal antosianin:asam galat adalah 1:75 dengan energi aktivasi sebesar 65,20 kJ/mol.

Protoporphyrin IX Extraction from Quail Eggshell (Cortunix cortunix) and Its Complexity with Zn(II) A. Rindang Anggit Laksono; Yohanes Martono; Cucun Alep Riyanto
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 18, ISSUE 2, August 2018
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol18.iss2.art7

The aim of this research is to find the optimal condition for Zn(II) complexation with protoporphyrin IX which is a natural coloring pigment on quail eggshell. The concentration of protoporphyrin IX extract is 0.01% (w / w) of the dried extract. The results of the complex are analyzed using Response Surface Methodology (RSM). The design used was central composite design with 3 factor variables X1 = pH (2; 4; 6), X2 = ratios (1: 3,1: 4,1: 5) and X3 = time (30 ', 60', 90 '). The modeling used is linear and shows that the pH, ratio, and time factor have an influence on the complexation. This model gives the absorbance equation Y = 2.12506 - 0.049856X1 - 020316X2 - 0,00409857X3 and gives treatment in the most optimum complexation of pH 2; ratio of 1: 3; and time for 30 minutes with the absorbance of 1,293 and the desirability value of 0.825.

Synthesis and Characterization of Nano Activated Carbon from Annatto Peels (Bixa orellana L.) Viewed from Temperature Activation and Impregnation Ratio of H3PO4 Cucun Alep Riyanto; Muhamad Syaiful Ampri; Yohanes Martono
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 1, ISSUE 1, February 2020
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/EKSAKTA.vol1.iss1.art7

Nano activated carbon is activated carbon with nano-sized carbon particles and can be synthesized from cellulose-containing materials such as the Annatto peels. In this study, the synthesis of nano activated carbon of the Annatto peels was carried out in terms of activation temperature variations and the carbon impregnation ratio of 50% H3PO4 acid and determining the characteristics of nano activated carbon from Annatto peels (NAPAC). The activation method used is the impregnation of carbon in 50% H3PO4 with a ratio of 1: 3; 1: 4; 1: 5; 1: 6; and 1: 7 (w/w) for 24 hours and heating at 400; 500; 600; 700; and 800 °C for one hour. Nano activated carbon from Annatto peels (NAPAC) was characterized by Infrared Spectrophotometer (FTIR), X-ray Diffractometer (XRD), and Transmission Electron Microscope (TEM). The results of the study showed that the NAPAC can be synthesized from Annatto peels with activation by 50% H3PO4 at the temperature of 500°C and the impregnation ratio of 1:5 (w/w). The result of characterization using FT-IR, XRD and TEM showed that NAPAC contains a group of functions O-H, C-H, C=, C=C dan C-O/P=O with an amorphous carbon structure and the range of particles diameter at 22-36 nm

The antioxidant activity of Zingiber officinale, Hibiscus sabdariffa, and Caesalpinia sappan combination Ari Hasna Widyapuspa; Elizabeth Betty Elok Kristiani; Yohanes Martono
Pharmaciana Vol 12, No 1 (2022): Pharmaciana
Publisher : Universitas Ahmad Dahlan

Medicinal plants have been used in traditional treatment since a long time ago by local people in Indonesia. Nowadays, the trend in the consumption of medicinal plants, especially herbal drinks, is increasing. Zingiber officinale, Hibiscus sabdariffa, and Caesalpinia sappan are their main materials of medicinal plants. They were chosen because of their high antioxidant contents. Nevertheless, there is no scientific research on the antioxidant activity of the combination of the three extracts. Therefore, the purpose of this study was to determine the total flavonoid contents and antioxidant activity, as well as to compare the antioxidant enhancement pattern of the combination. Samples were extracted by successive maceration with hexane and ethyl acetate as solvents. Total flavonoids contents were determined through colorimetric analysis and antioxidant activity was determined based on the DPPH method with the IC50 value as a parameter. Total flavonoids of ethyl acetate extract from Z. officinale, H. sabdariffa, and C. sappan were 30.28Â±0.04; 24.81Â±0.03; and 24.01Â±0.04 mg QE/ gram extract, and the IC50 value were 51.36Â±0.05; 83.37Â±0.06; and 35Â±0.04 ppm. Total flavonoid contents of their combination were 22.48Â±0.05 (0:1:1); 23.88Â±0.05 (1:1:1); 23.68Â±0.05 (1:4:1); 22.81Â±0.05; 28.81Â±0.04 (4:1:1); 27.55Â±0.03 (1:1:0); 24.41Â±0.04 mg QE/ gram extract (1:0:1). Antioxidant activities obtained from the combination were 57.50Â±0.05 (0:1:1); 52.25Â±0.06 (1:1:1); 71.50Â±0.06 (1:4:1); 45.74Â±0.05 (1:1:4); 54.36Â±0.05 (4:1:1); 68.97Â±0.06 (1:1:0); 40.52Â±0.05 ppm (1:0:1). The strongest antioxidant activity was C. sappan.Â

PENGARUH ASETILASI DAN OKSIDASI TEPUNG MOCAF TERHADAP KADAR AMILOSA DAN AMILOPEKTIN Tonia Nur Fitria; Yohanes Martono; Cucun Alep Riyanto
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2017): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 8 2017
Publisher : Prosiding SNST Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (208.344 KB)

Salah satu faktor yang mempengaruhi kualitas tepung singkong termodifikasi (MOCAF) adalah kandungan amilosa dan amilopektin. Asetilasi dan oksidasi merupakan salah satu cara yang dilakukan untuk memperbaiki kualitas tepung. Tujuan dari penelitian ini adalah menentukan pengaruh asetilasi dan oksidasi terhadap kadar amilosa dan amilopektin tepung MOCAF. Percobaan dilakukan dengan menggunakan Rancangan Acak Lengkap (RAL). Sebagai perlakuan adalah tepung MOCAF terasetilasi dan teroksidasi secara maksimal, tepung MOCAF terasetilasi dan teroksidasi secara optimal, tepung MOCAF terasetilasi 10%, tepung MOCAF non asetilasi dan oksidasi, dan tepung singkong. Percobaan diulang sebanyak 5 kali. Data purata masing-masing perlakuan diuji menggunakan metode Uji Beda Nyata Jujur (BNJ) dengan tingkat kebermaknaan 5%. Kadar amilosa dan amilopektin ditentukan secara spektrofotometri UV-VIS. Hasil penelitian ini menunjukkan bahwa perlakuan asetilasi dan oksidasi mempengaruhi kadar amilosa dan amilopektin secara signifikan pada tepung MOCAF.Kata kunci: amilopektin, amilosa, asetilasi, MOCAF, oksidasi

Pemberdayaan Petani Singkong Desa Kendel, Kecamatan Kemusu, Kabupaten Boyolali melalui Sentuhan Fortifikasi-Fermentasi Singkong Sri Hartini; Yohanes Martono
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 1 No. 1 (2015): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.1.1.35-40

Kendel village located in the Kemusu District, Boyolali. Cassava is one of the agricultural products in the region with 2.110 tons harvested cassava to the breadth of 212.4133 ha per year. Cassava plants is favorite plants for the population because it is relatively easy to cultivate and as a management area strategy because of limited water availability on the hilly areas. Up to now, post harvest processing of cassava is still using conventional methods and on sale in the form of raw cassava with its peels, and gaplek (dried cassava). While the cooked one are also served with simple ways, such as boiled cassava, fried cassava, roasted cassava, and lemet cassava. One of the constraints on the creation of cassava processing is limited diversification knowledge of the society Kendel as well as people do not yet understand the fortification of cassava. Close cooperation between Satya Wacana Christian University, Trukajaya Foundation, and Cassava Farmers Group realized empowerment, sortification, post harvest, advanced products, and increasing on economic value. The collabor ation was empowering community by using of participatory rural appraisal (PRA) method. Training have been done on post harvest handling, fortified cassava flour (mocaf), the manufacture of various products of mocaf flour, marketing training for products, monitoring and evaluation of processed products, and networking with other partners to develop programs based on local wisdom potential and organic as well. Various products have been produced from cassava flour fortified, processed products such as brownies, banana cake, cupcake, or cookies. Mocaf fortified flour sales price was Rp 8.000/kg.

ANALISIS SIDIK JARI KROMATOGRAM Stevia rebaudiana SECARA HIERACHIAL CLUSTER ANALYSIS (HCA) DAN PRINCIPAL COMPONENT ANALYSIS (PCA) Yohanes Martono; Sugeng Riyanto; Sudibyo Martono; Abdul Rohman
Majalah Obat Tradisional Vol 21, No 1 (2016)
Publisher : Faculty of Pharmacy, Universitas Gadjah Mada

Bioactivity herbal plant is influenced by its active compounds and consistency. Stevia rebaudiana contains bioactive compounds, diterpene glycosides which have antidiabetes activity. The goal of this study was to develop fingerprints analysis of S. rebaudiana based on High Performance Liquid Chromatography (HPLC) chromatogram. S. rebaudina leaves were taken from different planting area, leave ages, and seeds source. S. rebaudiana leaves were analyzed using isocratic Reversed Phase High Performance Liquid Chromatography (RP-HPLC). Fingerprints analysis of S. rebaudiana was done using chemometrics of Hierarchical Cluster Analysis (HCA) and Principal Component Analysis (PCA). Peak marker “common peak” were identify using Cluster Observation in HCA analysis at each peaks retention time formed in chromatogram. Retention times giving similarity value more than 0,90 were identified as “common peak”. HCA analysis resulted in 5 “common peak” identification as peaks marker particularly at peak no 1, 2, 4, 6 and 7. HCA analysis was also clustered samples into 3 main cluster. PCA analysis was optimized by calculated peak area whose N > 2000 particularly peak no 4, 6, and 7. PCA analysis result can be used to classify chromatogram based on original seeds, planting area and leave ages. Fingerprints analysis developed can be used an alternative method for quality control of S. rebaudiana herbal plants based on its bioactive compounds systemic characteristics.

Activated Carbon from Plantain Stems as NO2ˉ and Mn2+ Adsorbent on Well Water Betsy Felita; Cucun Alep Riyanto; Yohanes Martono
EduChemia (Jurnal Kimia dan Pendidikan) Vol 6, No 1 (2021)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Waste contamination in the environment can not be avoided in water, even though water is the main necessity for living things. Contaminants that are too high such as nitrites and manganese will have a negative impact if consumed continuously. In this research, the synthesis of activated carbon from Plantain stems as an adsorbent for nitrite (NO2ˉ) and manganese (Mn2+)contaminants has been carried out. Synthesis of activated carbon from Plantain stem (ACPS) was carried out with a carbon: H3PO4 impregnation ratio of 1:6 (w/w) and heating using a furnace at 600 oC for an hour. Characterization of ACPS using an Infrared Spectrophotometer showed the presence of functional groups C-H, C = H, C≡C, C-O, P-O, and C-NH3+ or P-H bonds. The results of characterization by XRD showed that the ACPS was amorphous but little crystalline. In the adsorption study, the adsorption isotherms of ACPS on NO2ˉ and Mn2+ ions followed the Redlich-Peterson isotherm with R2 values of 0.9968 and 0.4753, respectively. The adsorption kinetics of ACPS on NO2ˉ and Mn2+ ions followed the Diffusion Intraparticle model with R2 values of 0.8585 for NO2ˉ ions and Pseudo Second Order with R2 values of 0.9482 for Mn2+ ions. In the study of the adsorption efficiency of NO2ˉ and Mn2+ ions using ACPS on well water in the Guyangan Jepara villages, it was found that the reduction efficiency was 15%, only at NO2ˉ ion levels.

Optimasi Ekstraksi Protoporphyrin-IX dari Kerabang Telur Puyuh (Coturnix Coturnix L.) Harry Setiawan; Cucun Alep Riyanto; Dewi K.A.K. Hastuti; Yohanes Martono
EduChemia (Jurnal Kimia dan Pendidikan) Vol 3, No 1 (2018)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Industri tekstil banyak menggunakan pewarna sintetik karena mudah dalam pewarnaan dan murah, tetapi memiliki dampak yang buruk bagi lingkungan sekitar. Kesadaran akan pentingnya menjaga lingkungan membuat peusahaan tekstil mencoba kembali menggunakan pewarna alami. Kerabang telur puyuh memiliki protoporphyrin IX yang dapat digunakan sebagai pewarna. Kondisi optimum ekstraksi protoporphyrin IX dari kerabang telur puyuh perlu diteliti lebih lagi ditinjau dari komposisi pelarut, metode, dan siklus ekstraksi. Kerabang telur puyuh dikeringkan kemudian diekstraksi menggunakan pelarut metanol 96% dan HCl (v/v) (HCl(p) dan HCl 5%, v/v) dengan metode maserasi dan ultrasonik. Siklus ekstraksi dioptimalkan dengan variasi hingga 5 siklus. Penetapan kadar protoporphyrin dilakukan dengan menggunakan spektroskopi UV-VIS berdasarkan persamaan Lambert-Beer. Ekstrak difraksinasi menggunakan klorofom dengan rasio 1 : 2 v/v (klorofom : ekstrak). Fase organik dipindai dengan menggunakan spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa ekstrak kerabang telur puyuh mengandung protoporphyrin IX, terlihat dari hasil spektra yang cocok dengan spektra protoporphyrin standard. Kondisi ekstraksi protoporphyrin yang optimum didapatkan dengan menggunakan pelarut metanol 96% dan HCl(p) 5% (v/v) secara maserasi. Siklus ekstraksi protoporphyrin yang optimal adalah 3 siklus dengan kadar protoporphyrin dalam ekstrak adalah 1,92 ×10-2 % b/b.

Karakterisasi Pasta Gigi Berbahan Abrasif Hidroksiapatit (HAp) Agung Rimayanto Gintu; Elizabeth Betty Elok Kristian; Yohanes Martono
Jurnal Kimia Riset Vol. 5 No. 2 (2020): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v5i2.22503

Tootpaste was a product for dental care to clean, beautify and replace the minerals decay from the dent surface. To prevent the damage of the mineral layers on the surface, added the remineralitation compounds in the formula of the toothpaste. The remineralitation agents commonly add was CaCO3 and CaPO4, during the technological development the calcium compounds added was calcium in nano size like Hydroxyapatite (HAp). In this study produced the contains abrasive HAp and CaCO3 with the mix ratio CaCO3, 50:50 (HAp:CaCO3) and HAp. The characterization to the toothpaste with CaCO3 abrasive showed the Calcium contains 21,10 ± 0,0577%; dispersibility 936,37 ± 39,42gcm/s; pH 8,3 ± 0,00; and viscosity 25 ± 0,00 P.a. The toothpaste with CaCO3:HAp (50:50) abrasive showed the Calcium contains 27,03 ± 0,0333%; dispersibility 931,93 ± 22,62gcm/s; pH 8,8 ± 0,00; and viscosity 27 ± 0,00 P.a. The toothpaste with HAp abrasive showed the Calcium contains 27,67 ± 0,0882%; dispersibility 987,33 ± 39,50gcm/s; pH 8,9 ± 0,00; and viscosity 27,5 ± 0,00 P.a. The contamination of microbiology did not found in all of the toothpastes along the storage. Based on the entire organoleptic test against the toothpastes, the formula of toothpaste with the mix of CaCO3:HAp was les liked.

Co-Authors A. Rindang Anggit Laksono Abdul Rohman Abi Berkah Nadi, Muhammad Agung Rimayanto Gintu Agung Rimayanto Gintu Agung Rimayanto Gintu Agung Rimayanto Gintu Agung Rimayanto Gintu Andreas Setiawan Andriyani Rosita Sari Anggelia Essi Christian Ari Hasna Widyapuspa Bereka Meidelivia Raharjianti Bernaditha Catur Marina Betsy Felita Betsy Felita Cucun Alep Riyanto Daniel Ricky Putra Wijaya Devina Intan Sari Devinta Lestari Dewi Kurnianingsih Arum Kusumahastuti Diyonisio Kevin Elisando Dwiky Iswara, Kerri Eliana Prabalaras Elisabeth Betty Elok Kristiani Elizabeth Betty E. Kristiani Elizabeth Betty Elok Kristiani Erlien Giovani Soeroso Fahmi Puteri Perdani Ferdy Semuel Rondonuwu Fidelia Novitasari Fransiskus Tri Wahyu Hananto Franyoto, Yuvianti Dwi Gunawan, Raden Harry Setiawan Hartati Soetjipto Hartati Soetjipto Hindra, Ronal Febria Ida Suskawati Ika Puspitaningrum Ika Puspitaningrum Ira Tyas Kurniasari Kachingwe, Baxter Hepburn Kiki Fransiska Suharto Kusmita Kusmita Lia Kusmita Lucia Devi Danriani Lydia Ninan Lestario Maria Endah Retno Palupi Muhamad Syaiful Ampri Mutmainah Mutmainah Mutmainah Mutmainah Mutmainah Mutmainah November Rianto Aminu Noviana Gunawan Nur Ayu Hidayati Rahayu Sulistyorini Rema Fitriyani Resa Wulandari Salsabila Eka Ghina Rana Sandra Ayu Apriliyani Sekar Nurani Saptaningtyas Sherly Novita Sari Nawawi Slamet Widodo Sri Hartini Sri Hartini Sri Kasmiyati Sudibyo Martono Sudibyo Martono Sugeng Riyanto Suryasatriya Trihandaru Susanti Pudji Hastuti Tambunan, Hermon Frederik TATI NURHAYATI Tiffany Febetania Widodo Tonia Nur Fitria Widhi Nugroho Meindra Wijaya, Daniel Ricky Putra Yayi Suryo Prabandari Yoko Putra Nusantara Yuniarti, Zulfa Zhafira, Elian Zulfa Yuniarti

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