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Aktivitas Material Komposit Berbasis Karbon Aktif dan Titaniun Oksida terhadap Degradasai Fotokatalitik Zat Warna Tekstil Eviomitta Rizki Amanda; Yanuardi Raharjo
BRILIANT: Jurnal Riset dan Konseptual Vol 4, No 1 (2019): Volume 4 Nomor 1, Februari 2019
Publisher : Universitas Nahdlatul Ulama Blitar

Degradasi fotokatalitik zat warna tekstil remazol brilliant blue menggunakan material komposit karbon aktif dengan titanium oksida (TiO2) kombinasi sinar UV telah berhasil dikembangkan. Penelitian dilakukan dengan mencampurkan karbon aktif dengan TiO2 pada larutan yang mengandung zat warna remazol brilliant blue. Larutan kemudian di sinari dengan lampu UV dalam reaktor fotokatalitik yang dilengkapi dengan magnetic stirrer dan lampu UV 3 x 8 watt. Hasil degradasi kemudian dianalisis dengan spektrofotometer UV-Vis pada panjang gelombang maksimum (λmaks) 593 nm. Beberapa parameter yang mempengaruhi degradasi fotokatalitik seperti pH larutan sampel dan waktu kontak telah dioptimasi. Hasil degradasi fotokatalitik yang optimum sebesar 89.17 % terjadi pada larutan sampel dengan pH 5.5 dengan waktu optimum degradasai ialah 180 menit.

Analysis of N-nitrosodiprophylamines Carcinogenic Compound in Meat-Processing using Headspace-Single Drop Microextraction-Gas Chromatography-Flame Ionization Detector (HS-SDME-GC-FID) Teguh Hari Sucipto; Ganden Supriyanto; Yanuardi Raharjo
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Analysis of N-nitrosodiprophylamines carcinogenic compound in processed meat especially hamburger and kebab had occured by HS-SDME-GC-FID technique. The results were obtained determining the optimum pH was 4, the optimum stirring speed was 6 scale, and the temperature of extraction was 30 ºC. It was obtained in this study that the detection limit of 78 ppb, the percent recovery of 101,18%, precision between 0,089% to 0,566%, and the true enrichment factor was 3372,66 times. From the results of the study was concluded that HS-SDME-GC-FID technique can be used to analyze the carcinogenic compound N-nitrosodiprophylamines (NDPA) found in meat-processing (hamburger and kebab) by the concentration of each samples as follows, hamburger I of 0,27 ppm, hamburger II of 0,73 ppm, hamburger III of 1,39 ppm, and kebab I of 3,13 ppm

Development of Hollow Fiber Liquid Phase Microextraction Method for Determination of Diazinon Residues in Vegetable Samples Eviomitta R. Amanda; Yanuardi Raharjo; Usreg S. Handajani
Jurnal Akademika Kimia Vol. 11 No. 1 (2022)
Publisher : Universitas Tadulako

An extraction method based on a combination of hollow fiber liquid-phase microextraction with high-performance liquid chromatography diode array detector (HF-LPME HPLC-DAD) has been developed and demonstrated to analyze pesticide residues in vegetables. This study aims to determine the optimum extraction conditions and validation performance of this method. Diazinon pesticide was selected as the target model analyte. HF-LPME is performed by stacking microliter organic solvent droplets through an HPLC syringe coated with polypropylene hollow fiber by directly dipping it into the sample solution and stirring it during the extraction process. Finally, the organic solvent was put into an HPLC syringe at the end of the extraction. Then, it was injected into the HPLC-DAD at the wavelength of 247 nm. Several important extraction parameters have been optimized. The optimization results showed the type of organic solvent of n-hexane, the length of the hollow fiber of 1.5 cm, the volume of the sample solution of 20 mL, and the stirring speed of 600 rpm. The validation performance obtained a limit of detection (LoD) of 0.10 mgL-1, limit of quantification (LoQ) of 0.33 mgL-1, percent recoveries of 99.88%, a coefficient of variation of 3% (n=15), and the enrichment factor of 19,982 times. Under optimal conditions, the developed method was applied to extract diazinon in vegetable matrix samples using the spiking method. Mustard green was selected as a model matrix sample. From the research, the percentage recoveries of diazinon obtained in the mustard green matrix sample are 98.80% - 100.41%.

EDUKASI PEMANFAATAN BAHAN ALAM SEBAGAI OBAT TRADISIONAL UNTUK PENCEGAHAN PENYAKIT DAN PERAWATAN KESEHATAN Fatiha Khairunnisa; Qurrota A’yuni; Kautsar Ul Haq; Harsasi Setyawati; Ahmadi Jaya Permana; Rico Ramadhan; Yanuardi Raharjo; Mulyadi Tanjung; Sri Sumarsih; Hartati; Handoko Darmokoesoemo
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol. 8 No. 1 (2022): Vol.8, No.1(2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/abdi.v8i1.15268

One of the ways to maintain the personal health during an emergency condition as the current COVID-19 is the utilization of natural ingredients. It can be processed into traditional medicines. Jamu as a type of traditional medicine as well as natural heritage has been widely used by Indonesian to prevent the body from disease and to treat the health issue. This community service aimed to provide education for society regarding the chemical content and efficacy of natural ingredients such as empon-empon. The techniques to process it into traditional medicine for family healthcare was also delivered. The activity was carried out through face-to-face meeting while still applying the health protocols. The level of success and usefulness of the activity was known from the response of the participants. In general, the PKM activities in the scheme of theory and practical session has been carried out well. The materials presented in theory session was understandable. Meanwhile, the techniques used in practical session was easy to be replicated. The activity was expected to increase the knowledge and skills of the society in terms of natural ingredients that have good chemical content and the techniques to process them into nutritious drinks for families.

Peningkatan Kesehatan Masyarakat melalui Edukasi Pemanfaatan Tanaman Obat di Pondok Pesantren An-Nidhomiyah Ngelom Sidoarjo Qurrota A'yuni; Fatiha Khairunnisa; Kautsar Ul Haq; Yanuardi Raharjo; Mulyadi Tanjung; Pratiwi Pudjiastuti; Purkan Purkan; A. Budi Prasetyo; Sofijan Hadi; Hamizah Haula'; Diana Merna; Eksan Ar Rasyid
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 5, No 1 (2023)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v5i1.7115

Tanaman obat merupakan jenis tanaman yang memiliki khasiat sebagai obat serta dapat dimanfaatkan sebagai bahan pembuatan obat tradisional yaitu jamu untuk membantu masyarakat dalam pemeliharaan kesehatan, pencegahan penyakit dan perawatan kesehatan terutama di era new normal dan post-pandemi Covid-19. Beberapa khasiat dari obat tradisional yang umumnya dimanfaatkan masyarakat antara lain meringankan gejala flu, batuk, sakit tenggorokan, sakit kepala, nyeri haid, dan lain-lain. Tanaman obat dapat dibudidayakan di lingkungan sekitar tempat tinggal seperti rumah atau pondok pesantren. Kegiatan pengabdian kepada masyarakat (PkM) ini bertujuan untuk memberikan edukasi publik khususnya di lingkungan pondok pesantren mengenai manfaat tanaman obat sebagai upaya untuk meningkatkan pengetahuan, keterampilan, dan kesehatan masyarakat. Rangkaian kegiatan ini diselenggarakan di Pondok Pesantren An-Nidhomiyah pada Bulan Juli 2022. Kegiatan ini diselenggarakan secara luring dengan tetap memenuhi protokol kesehatan. Peserta kegiatan ini yaitu santri putra dan putri pondok pesantren An-Nidhomiyah yang berjumlah 30 peserta. Kegiatan ini dilakukan melalui metode pendampingan dan workshop dengan pemaparan materi, praktik pembuatan obat tradisional, dan penanaman tanaman obat di halaman pondok. Kegiatan ini mendapatkan antusiasme yang besar dari peserta. Hasil survei kepuasan peserta menunjukkan trendline sebesar 87% yang termasuk dalam kategori sangat memuaskan untuk semua aspek, yang berarti sebagian besar peserta sangat puas terhadap kegiatan PkM ini, baik dari segi materi, metode, narasumber, hingga fasilitas yang diberikan. Medicinal plants are plants that have efficacy for medicinal and can be used as ingredients for making traditional medicines, namely herbs, to help the community in health care, disease prevention, and health care, especially in the new normal era and the post-pandemic Covid-19. Some of the benefits of traditional medicine commonly used by the community include relieving symptoms of flu, cough, sore throat, headache, menstrual pain, and others. Medicinal plants can be cultivated around the residence, such as in houses or Islamic boarding schools. This community service activity aims to provide public education, especially in Islamic boarding schools, about the benefits of medicinal plants to improve knowledge, skills, and public health. This activity was held at the An-Nidhomiyah Islamic Boarding School in July 2022. This activity was held offline by implementing health protocols. The participants of this activity were students of the An-Nidhomiyah Islamic boarding school, totaling 30 participants. The activity is carried out through mentoring and workshop methods, including presentations, traditional medicine production practices, and planting medicinal plants in the boarding school yard. This activity received great enthusiasm from the participants. The participant satisfaction survey results show a trendline of 87%, which is included in the very satisfied category for all aspects, which means that most of the participants were very satisfied with this PkM activity in terms of topics, methods, speakers, and facilities provided.

Development of Hollow Fiber Liquid Phase Microextraction Method for Determination of Diazinon Residues in Vegetable Samples Eviomitta R. Amanda; Yanuardi Raharjo; Usreg S. Handajani
Jurnal Akademika Kimia Vol. 11 No. 1 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i1.pp6-13

An extraction method based on a combination of hollow fiber liquid-phase microextraction with high-performance liquid chromatography diode array detector (HF-LPME HPLC-DAD) has been developed and demonstrated to analyze pesticide residues in vegetables. This study aims to determine the optimum extraction conditions and validation performance of this method. Diazinon pesticide was selected as the target model analyte. HF-LPME is performed by stacking microliter organic solvent droplets through an HPLC syringe coated with polypropylene hollow fiber by directly dipping it into the sample solution and stirring it during the extraction process. Finally, the organic solvent was put into an HPLC syringe at the end of the extraction. Then, it was injected into the HPLC-DAD at the wavelength of 247 nm. Several important extraction parameters have been optimized. The optimization results showed the type of organic solvent of n-hexane, the length of the hollow fiber of 1.5 cm, the volume of the sample solution of 20 mL, and the stirring speed of 600 rpm. The validation performance obtained a limit of detection (LoD) of 0.10 mgL-1, limit of quantification (LoQ) of 0.33 mgL-1, percent recoveries of 99.88%, a coefficient of variation of 3% (n=15), and the enrichment factor of 19,982 times. Under optimal conditions, the developed method was applied to extract diazinon in vegetable matrix samples using the spiking method. Mustard green was selected as a model matrix sample. From the research, the percentage recoveries of diazinon obtained in the mustard green matrix sample are 98.80% - 100.41%.

Hollow Fiber Hemodialysis Imprinted Membrane Based on Eugenol for Human Blood Filter Djunaidi, Muhammad Cholid; Maharani, Nesti Dwi; Pardoyo, Pardoyo; Raharjo, Yanuardi
Indonesian Journal of Chemistry Vol 24, No 5 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.83065

Kidney failure is a kidney function disorder that occurs in more than 90.00% of people in the world, especially in developing countries. In 2013, around 12.50% of the 25 million population experienced kidney failure and 78.00% had to undergo dialysis for life. In this research, a hemodialysis method was developed, namely molecularly imprinted membrane (MIM), which has high selectivity for urea molecules with high binding capacity using a membrane in the form of hollow fiber. Variations in research use urea transport concentrations such as 50, 200, and 300 ppm. The analysis using UV-vis spectrophotometry on HFHIM with a solution mixture of 50 ppm showed that the receiving phase by the membrane was 70.48% urea, 12.97% creatinine, and 9.42% vitamin B12. Meanwhile, the feed phase is 28.25% urea, 85.41% creatinine and 88.64% vitamin B12. When using HFHNIM, the receiving phase is urea 44.78%, creatinine 58.51%, and vitamin B12 31.00%. Meanwhile, the feed phase is 54.55% urea, 40.57% creatinine, 68.29% vitamin B12. The selectivity of HFHIM for urea is better than creatinine and vitamin B12 compared to HFHNIM, in the order of selectivity urea > creatinine > vitamin B12.

COMMUNITY DEVELOPMENT THROUGH EDUCATION ON THE PROCESSING OF HOUSEHOLD WASTE INTO COMMERCIAL PRODUCTS Widati, Alfa Akustia; Adiarto, Tokok; Zakki Fahmi, Mochamad; Budi Prasetyo, Antonius; Darmokoesoemo, Handoko; Supriyanto, Ganden; Sumarsih, Sri; Purwaningsih, Aning; Khasanah, Miratul; Hartati, Hartati; Baktir, Afaf; Hadi, Sofijan; Purkan, Purkan; Raharjo, Yanuardi; Khairunnisa, Fatiha; A'yuni, Qurrota; Tri Puspaningsih, Ni Nyoman; Hwei Voon, Lee
Jurnal Layanan Masyarakat (Journal of Public Services) Vol. 8 No. 3 (2024): JURNAL LAYANAN MASYARAKAT
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jlm.v8i3.2024.329-338

Community empowerment and household waste processing are two issues that need to be resolved by the government. An independent and educated society is an important pillar to support the development of country. Meanwhile, waste that continues to accumulate without processing has a negative impact on health and the environment. Public education about household waste processing can be a solution to the two problems above. Education was carried out at Junior High School YBPK Surabaya and residents of Dukuh Kupang Surabaya, and other participants who joined in a hibrid meeting with a total of 116 participants. Activities at YBPK Surabaya took place on 25 March and 5 August 2023 and activities at Dukuh Kupang Surabaya took place on 27 May and 26 August 2023. The types of waste processed are organic waste and used cooking oil, which are then converted into eco-enzymes and used cooking oil Activities are divided into 2 stages. there are community education activities and program sustainability monitoring activities. The community education activities includes presentation and workshop were hold in March 2023 at YBPK Surabaya Middle School and May 2023 at Dukuh Kupang Surabaya. The evaluation of sustainability program including individual practice and monitoring of activities was carried out in August 2023 at Dukuh Kupang Surabaya. Methods for implementing activities include presentation, practice accompanied by a mentor, individual practice, and monitoring program sustainability. Based on the analysis of participants' ability, the participant scores before and after the activity was increase. It means that this training succeeded in increasing participants' knowledge and skills in processing waste, especially organic waste and used cooking oil waste. A total of 72 out of 116 participants (62%) had processed household waste either individually or in groups. Activity evaluation data shows that these activities are necessary and on target to create an independent and creative society.

CELLULOSE NANOCRYSTALS BASED ON PINEAPPLE LEAF FIBERS IN HEMOPERFUSION APPLICATIONS FOR CREATININE REMOVAL: BATCH METHOD ADSORPTION STUDY Raharjo, Yanuardi; Darmokoesoemo, Handoko; Fetty, Amelia Julia Tria; Aziz, Rizky Abdul; Salsabila, Fara; Ishma, Ervina Fadhilatul
Jurnal Kimia Riset Vol. 9 No. 2 (2024): December
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v9i2.65046

Kidney failure is a major global cause of mortality, often resulting from the buildup of uremic toxins like creatinine. Creatinine serves as an indicator for assessing treatment needs in kidney failure patients. Hemoperfusion, a treatment based on the adsorption of toxins, has shown promise when using cellulose nanocrystals (CNCs) as adsorbents. CNCs derived from pineapple leaf fibers offer unique advantages due to their abundance of active sites, high adsorption capacity, and strong binding affinity. This study investigates the efficiency of CNCs in reducing creatinine levels, with the reduction attributed to the binding of creatinine to CNC hydroxyl groups. Characterization of CNCs was performed using PSA, XRD, FTIR, and SEM-EDX techniques, while the residual creatinine was quantified via UV-Vis spectrophotometry, utilizing a picric acid complex under alkaline conditions and measured at 485 nm. Optimal conditions were found with a stirring speed of 210 rpm, 120-minute contact time, and 10 mg/L creatinine concentration, resulting in an adsorption capacity (Qads) of 2.572 mg/g. The CNC adsorbent demonstrated hemocompatibility, with an APTT blood coagulation time of 31.3 seconds. These findings suggest that CNCs could be highly effective in developing safer, efficient hemoperfusion systems for managing kidney failure.

Synthesis of Printed Hollow Fiber Membranes Urea as a Membrane Candidate Hemodialysis Djunaidi, Muhammad Cholid; Ayuningrum, Denandha Putri; Maharani, Nesti Dwi; Khabibi, Khabibi; Pardoyo, Pardoyo; Raharjo, Yanuardi; Susanto, Heru; Filardli, Abdullah Malik Islam
Indonesian Journal of Chemistry Vol 24, No 6 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.83068

Chronic kidney failure is a disease that affects the world's population and an alternative solution is hemodialysis. Hemodialysis is the process of cleaning the blood from urea and creatinine through a semi-permeable membrane in the form of a hollow fiber membrane (HFM) with the following advantages: flexible and low energy requirements. The weaknesses of commercial hemodialysis membranes are that they are hydrophobic, chemical resistant, and low biocompatibility. This research uses a membrane of polysulfone combined with eugenol and polyethylene glycol (PEG) or polyethylene glycol diglycidyl ether (PEGDE). Eugenol has allyl, hydroxy, and methoxy groups which are derived from polyeugenol via allyl groups and from polyeugenol to polyeugenoxy acetic acid via hydroxyl groups. The resulting molecularly imprinted membrane (MIM) in the form of hollow fiber has better porosity, absorption, flux values and is highly selective in transport, with the order of selectivity, namely urea > creatinine > vitamin B12.

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