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All Journal Indonesian Journal of Chemistry JMM (Jurnal Masyarakat Mandiri) Widya Teknik
Putro, Jindrayani Nyoo
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Chemical Engineering, Chemistry & Bioengineering Chemistry Other

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Pseudoternary Phase Diagram and Antibacterial Activity of Microemulsion-Based Citronella Oil Gunarto, Chintya; Go, Alchris Woo; Angkawijaya, Artik Elisa; Lie, Jenni; Soetaredjo, Felycia Edi; Ismadji, Suryadi; Puspitasari, Nathania; Putro, Jindrayani Nyoo; Risdian, Chandra
Indonesian Journal of Chemistry Vol 24, No 3 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.93250

Abstract

Citronella oil (CTO) is extracted from citronella leaves by maceration or steam distillation process, which has antibacterial and insect-repellent activities. However, the use of CTO is limited and requires modification in other formulations, such as microemulsion (ME), to increase its bioactivities. ME consists of oil, water, surfactant and/or cosurfactant and is commonly applied in food and beverages, cosmetics, and carrier for drug delivery applications. CTO was used as the oil phase for ME with nonionic surfactant and ethanol as a cosurfactant for lowering interfacial tension between oil and water phase. Subsequent observations regarding stability and antibacterial tests were carried out on ME formulations with surfactant/cosurfactant mixture of 2 due to its largest ME area. A hydrodynamic diameter analysis was also carried out to see the stability of the ME within a period of 50 d. ME with 10% CTO, 30% surfactant mixture, and 60% water showed the best formulation observed from the consistent hydrodynamic diameter measurement. In addition, ME with different formulations could inhibit the growth of Escherichia coli and Staphylococcus aureus by more than 90%. From this research, CTO-based ME potentially improve and develop drug carrier applications, especially via topical route.
Optimum and Green Fabrication of MIL-100(Fe) for Crystal Violet Dye Removal from Aqueous Solution Wijaya, Christian Julius; Soetaredjo, Felycia Edi; Yuliana, Maria; Santoso, Shella Permatasari; Hartono, Sandy Budi; Irawaty, Wenny; Lie, Jenni; Putro, Jindrayani Nyoo; Gunarto, Chintya; Puspitasari, Nathania; Ismadji, Suryadi; Gunawan, Setiyo
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.93323

Abstract

MIL-100(Fe) was prepared and subsequently used to remove crystal violet dye from aqueous solutions simulating dye-containing wastewater in the environment. In the future, it is aimed that MIL-100(Fe) can be used in managing dye-containing wastewater in the environment and reducing the negative impacts it can cause. Here, MIL-100(Fe) fabrication needs to be optimized to obtain optimum process conditions, which are environmentally friendly and can produce MIL-100(Fe) with the best characteristics. This study focused on optimizing the fabrication of MIL-100(Fe), which is a type of MOF with good chemical stability, thermal stability, and flexible structure. In this study, the room-temperature fabrication of MIL-100(Fe) was established using a ligand-to-metal molar ratio of 0.95 and an acetic acid concentration of 5.1 vol% for 6.2 h. The optimum MIL-100(Fe) was tested for crystal violet removal and provided an optimum removal capacity of 182.66 ± 3.81 mg/g. Statistical approaches are used to investigate the independent parameters and their interactions contributing to MIL-100(Fe) formation.
The Effect of Hydrothermal Treatment on the Biological Properties of Anting-Anting (Acalypha indica Linn.) Plant Extract Containing Carbon Dots Setiawaty, Natasya Nadia Poetri; Putro, Jindrayani Nyoo; Santoso, Shella Permatasari
Widya Teknik Vol. 22 No. 1 (2023): May
Publisher : Fakultas Teknik, Universitas Katolik Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/wt.v22i1.4854

Abstract

Anting-anting plant (Acalypha indica Linn.) is shrubs that grow as a weed in most parts of tropical countries. The plant has a record of ethno-pharmacological uses by native Asians, the plant has especially been used widely in the therapeutically practice in India. Owing to its rich biological active compounds content, Acalypha indica is rendered as a wild-plants with excellent antioxidant activities. In this work, hydrothermal extraction was performed to obtained liquid products containing high biological active compounds and carbon dots from Acalypha indica plant powder. The effect of hydrothermal temperature of 100, 110, 120, 130, and 140°C was evaluated on the optical properties and biological activity of the resultant liquid products from A. indica. The results imply that the liquid products obtained at highest investigated hydrothermal temperature of 140°C  had the highest total phenolic and total flavonoid content, specifically the calculated total phenolic content is 5.50 mg GAE/g and total flavonoid content is 0.53 mg QE/g; that is higher than the non-hydrothermally treated extract. Owing to the high biological active compounds, the liquid products also show high radical scavenging activity, that is 78.5% against DPPH and 47.2% against superoxide radicals. The antibacterial assays show that the liquid product obtained from hydrothermal treatment at 140°C has better activity than the extract, with inhibition rate of 61.1 and 97.2% against Escherichia coli and Staphylococcus aureus, respectively.
A Review of the Development and Role of Heterogeneous Catalysts for Biodiesel Production Yuliana, Maria; Ismadji, Suryadi; Wijaya, Christian Julius; Soetaredjo, Felycia Edi; Gunarto, Chintya; Santoso, Shella Permatasari; Putro, Jindrayani Nyoo; Anggorowati, Adriana Anteng; Lourentius, Suratno
Widya Teknik Vol. 23 No. 1 (2024): May
Publisher : Fakultas Teknik, Universitas Katolik Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/wt.v23i1.5453

Abstract

Indonesian regulations regarding the implementation of B30 encourage a significant increase in biodiesel demand. Moreover, this implementation will continue to be increased to B35 in 2025 and is projected to reach B100 in 2045. This high demand for biodiesel needs to be supported by the development of adequate biodiesel production technology where the catalyst is one aspect that plays an important role in biodiesel production. The use of catalysts aims to accelerate biodiesel production so that high biodiesel yields and good quality are achieved. In biodiesel production, the choice of catalyst greatly influences the operating conditions, the products produced, the subsequent purification process, and the environmental impacts. Moreover, the changing trend in biodiesel raw materials from food to non-food ingredients requires the development of catalysts that are more suitable for the raw materials used in biodiesel production. The specific characteristics of each catalyst play an important role in the transesterification reaction to produce biodiesel where this needs to be supported and adapted to optimum operating conditions, especially in terms of alcohol-to-oil molar ratio, catalyst amount, temperature, pressure, and reaction time. This review provides a comprehensive overview of the various heterogeneous catalysts used to assist the transesterification reactions in biodiesel production.
PELATIHAN PRODUK APLIKATIF BERBASIS KIMIA UNTUK ANAK-ANAK PANTI ASUHAN DI SURABAYA Puspitasari, Nathania; Retnoningtyas, Ery Susiany; Gunarto, Chintya; Hartono, Sandy Budi; Irawaty, Wenny; Santoso, Shella Permatasari; Putro, Jindrayani Nyoo; Wijaya, Christian Julius; Harianto, Octaviani; Widharka, Maria Rosario
JMM (Jurnal Masyarakat Mandiri) Vol 9, No 5 (2025): Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v9i5.33883

Abstract

Abstrak: Panti asuhan adalah sebuah lembaga yang dikhususkan untuk mengasuh anak-anak yang telah kehilangan keluarga dan menghadapi tantangan dalam hidup mandiri karena kurangnya kasih sayang yang konsisten dan persiapan yang tidak memadai untuk masa dewasa. Tujuan dari kegiatan pengabdian kepada masyarakat ini yaitu pengembangan softskill dan hardskill melalui pelatihan pembuatan produk berbasis kimia kepada anak-anak panti asuhan sebagai generasi penerus bangsa. Peserta kegiatan mencangkup anak-anak berusia 10-16 tahun dengan jumlah 30 anak. Metode pelaksanaan meliputi perencanaan, pelatihan, refleksi, dan evaluasi. Kegiatan pertama yaitu perencanaan yang berisi persiapan dan sosialisasi kegiatan pengabdian kepada perwakilan panti asuhan di Surabaya, kegiatan kedua yaitu pelatihan pembuatan produk popping boba bersama anak-anak panti asuhan, kegiatan ketiga adalah refleksi dengan mendiskusikan hasil percobaan anak-anak serta evaluasi berupa pembagian kuesioner kepada peserta mengenai program pelatihan ini sehingga dapat dipakai untuk peningkatan kinerja pada kegiatan yang akan datang. Berdasarkan hasil evaluasi, terdapat peningkatan signifikan pada rata-rata nilai post-test sebesar 72,45% dibandingkan nilai pre-test. Hal ini mengindikasikan bahwa pembelajaran berbasis praktek mampu meningkatkan pemahaman peserta secara signifikan. Diharapkan anak-anak panti asuhan yang telah mengikuti kegiatan pelatihan ini memperoleh motivasi, pengetahuan, dan keterampilan dalam mengaplikasikan ilmu kimia sehingga dapat bermanfaat untuk masa mendatang.Abstract: An orphanage is institution dedicated to caring for children who have lost their families and face challenges in living independently due to a lack of consistent love and inadequate preparation for adulthood. The purpose of this community service activity is to develop softskills and hardskills through chemical-based products training for the orphanage children, who will become the nation's future generation. Participants include children aged 10-16 years with a total of 30 children. The implementation method includes planning, training, reflection, and evaluation. The first activity was planning which contains preparation and socialization of community service activities to representatives of orphanages in Surabaya, the second activity was training in making popping boba products with orphanage children, the third activity was reflection by discussing the results of the children's experiments and evaluation by distributing questionnaires to participants. Based on the results, there was a significant increase in the average post-test score of 72.45% compared to the pre-test score. This indicates that practice-based learning can significantly improve participants' understanding. It is hoped that orphanage children who have participated in this training activity will gain motivation, knowledge, and skills in applying chemistry so that it can be useful for the future.
DISEMINASI TEKNOLOGI TEPAT GUNA ALAT PENGOLAH MINYAK JELANTAH MENJADI BIODIESEL BAGI MASYARAKAT KECAMATAN JAMBANGAN SURABAYA Retnoningtyas, Ery Susiany; Gunawan, Ivan; Putro, Jindrayani Nyoo; Puspitasari, Nathania; Joewono, Andrew; Anggorowati, Adriana Anteng; Santoso, L. M. Hadi; Yuliana, Maria; Yunita, Theresia Laurensia
JMM (Jurnal Masyarakat Mandiri) Vol 8, No 1 (2024): Februari
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v8i1.20265

Abstract

Abstrak: Minyak goreng bekas pakai atau minyak jelantah merupakan salah satu limbah rumah tangga terbesar di Indonesia. Minyak jelantah yang dibuang sembarangan dapat mencemari lingkungan. Masyarakat di kecamatan Jambangan, kota Surabaya sangat menyadari dampak buruk dari pencemaran minyak jelantah terhadap lingkungan. Karena itulah diinginkan mengolah minyak jelantah yang telah dikumpulkan sebagai bahan bakar biodiesel. Tujuan pengabdian masyarakat ini adalah untuk meningkatkan kesadaran masyarakat Jambangan agar tidak membuang secara sembarangan limbah minyak jelantah sehingga dapat menurunkan jumlah limbah minyak jelantah yang dibuang ke lingkungan. Metode kegiatan yang dilaksanakan adalah melakukan edukasi berupa pemberian materi dan praktek cara mengubah limbah minyak jelantah menjadi biodiesel menggunakan alat pengolah minyak jelantah. Untuk memudahkan pengoperasian alat pengolah minyak jelantah ini, didampingi dengan manual penggunaannya yang disusun menggunakan bahasa yang mudah dipahami oleh masyarakat sehingga dapat belajar secara mandiri. Mitra yang terlibat dalam kegiatan ini adalah Ikatan Pekerja Sosial Masyarakat (IPSM) Jambangan dan masyarakat kelurahan Karah, kecamatan Jambangan. Hasil dari aktivitas ini, masyarakat kecamatan Jambangan Surabaya dapat mempraktekkan langsung proses pengolahan minyak jelantah menjadi biodiesel. Bahkan dalam hasil evaluasi kuesionernya, mayoritas yaitu sebanyak 72% ingin mengikuti kompetisi di wilayahnya dengan memanfaatkan alat pengolah minyak jelantah ini. Hal ini tentunya menunjukkan apresiasi yang luarbiasa terhadap kegiatan abdimas ini.Abstract: Used cooking oil residue or known as ‘jelantah’ oil is one of the largest household wastes in Indonesia. Used cooking oil residue that is thrown away carelessly can pollute the environment. People in Jambangan sub-district, Surabaya city are very aware of the negative impact of used cooking oil pollution on the environment. That's why it is desirable to process the collected ‘jelantah’ oil as biodiesel fuel. The aim of this community service is to increase awareness of the Jambangan community not to carelessly dispose of used cooking oil waste so that it can reduce the amount of used cooking oil waste that is thrown into the environment. The method of activity is to provide education in the form of providing material and practice on how to convert used cooking oil waste into biodiesel using used cooking oil processing equipment. To make it easier to operate this used cooking oil processing tool, it is accompanied by a manual for its use which is prepared using language that is easy for the public to understand so that they can learn independently. The partners involved in this activity are the Jambangan Community Social Workers Association (IPSM) and the community of Karah - Jambangan sub-district. As a result of this activity, the people of Jambangan Surabaya sub-district can directly practice the process of ‘jelantah’ oil into biodiesel. Even in the results of the questionnaire evaluation, the majority, namely 72%, wanted to take part in competitions in their area using this used ‘jelantah’ oil processing equipment. This certainly shows extraordinary appreciation for this community service activity.
Co-Authors Adriana Anteng Anggorowati Andrew Joewono, Andrew Angkawijaya, Artik Elisa Chandra Risdian Ery Susiany Retnoningtyas Felycia Edi Soetaredjo Go, Alchris Woo Gunarto, Chintya Harianto, Octaviani Hartono, Sandy Budi Ivan Gunawan Lie, Jenni Lourentius, Suratno Puspitasari, Nathania Santoso, L. M. Hadi Santoso, Shella Permatasari Setiawaty, Natasya Nadia Poetri Setiyo Gunawan Suryadi Ismadji Wenny Irawaty Widharka, Maria Rosario Wijaya, Christian Julius Yuliana, Maria Yunita, Theresia Laurensia