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All Journal Indonesian Journal of Chemistry Community Empowerment International Journal of Eco-Innovation in Science and Engineering (IJEISE) Halal Research Journal
Rohmah, Aisyah Alifatul Zahidah
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Engineering Industrial & Manufacturing Engineering Mechanical Engineering Public Health Social Sciences

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Mini-Review on Renewable Production of Green p-Xylene Muchammad, Raka Selaksa Charisma; Saputro, Erwan Adi; Rohmah, Aisyah Alifatul Zahidah
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 5 No. 2 (2024): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v5i2.135

Abstract

The sustainable and renewable production of p-xylene (PX), a crucial component for polyethylene terephthalate (PET), is increasingly important as an alternative to fossil-based processes. This review examines biomass-derived routes for PX synthesis, emphasizing the use of bio-px production pathways to feasible for commercialization. While bio-PX production offers reduced greenhouse gas emissions, challenges remain in cost, catalyst stability, and energy requirements. Recent innovations in catalyst regeneration and hierarchical structures enhance stability and minimize coke formation. Life-cycle assessments confirm bio-PX’s environmental advantages, suggesting that further research into biomass sources and catalyst efficiency will advance bio-based PX production toward commercial viability in a sustainable bioeconomy.
Aplikasi Kitosan berbasis Kulit Udang Sebagai Alternatif Subtitusi Lilin Pelapis dalam Rangka Peningkatan Umur Simpan Buah-Buahan: A Review Rohmah, Aisyah Alifatul Zahidah; Fajrin, Alifah Nur Aini; Gunawan, Setiyo
Halal Research Vol 2 No 2 (2022): July
Publisher : Halal Center ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j22759970.v2i2.420

Abstract

Sebagai negara dengan mayoritas penduduk beragama islam, pasar pangan di Indonesia sangat erat kaitannya dengan hukum halal haram. Salah satu pangan yang kerap dikonsumsi adalah buah-buahan, namun dengan karakternya yang mudah rusak dan membusuk, diperlukan suatu pelapis yang berperan sebagai pengawet untuk memperpanjang usia simpan buah-buahan tersebut termasuk dengan melapisi menggunakan lilin pelapis. Lilin pelapis dapat membahayakan tubuh jika dikonsumsi terus menerus sehingga tidak memenuhi syarat thayyib. Kitosan dari kulit udang dapat menjadi alternatif pengganti lilin pelapis karena dibuat dari bahan halal dan aman bagi tubuh. Kitosan dapat diproduksi secara enzimatis dan kimiawi. Proses pengkajian halal telah dilakukan baik dengan metode produksi secara enzimatik maupun kimiawi dimana keduanya memiliki beberapa titik kritis pada bahan yang digunakan yaitu pada komposisi bahan media untuk fermentasi untuk proses enzimatik dan pada penggunaan ionic liquids beserta etanol untuk proses kimiawi.
Sustainable Synthesis of Bacterial Cellulose Nanocrystals from Glucomannan-Based Bacterial Cellulose Widjaja, Tri; Nurkhamidah, Siti; Ni’mah, Hikmatun; Wardhono, Endarto Yudo; Rohmah, Aisyah Alifatul Zahidah; Tirta, Anggi; Nailah, Rossesari; Sari, Citra Yulia
Indonesian Journal of Chemistry Vol 25, No 5 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.99360

Abstract

Bacterial cellulose (BC), derived from glucose fermentation, is a renewable material known for its abundant availability, quick production, cost-effectiveness, and eco-friendly characteristics. This study focuses on converting BC into BC nanocrystals (BCNC) via fermentation, hydrolysis using acid solutions, and ultrasonication. Glucomannan flour with concentrations of 50, 60, and 90% was fermented using Acetobacter xylinum for 10 days at pH 5 to produce BC. The BC was then hydrolyzed with HCl solutions at 1, 2, 3, 4, and 5 M concentrations, followed by sonication. The 90% glucomannan flour yielded the highest BC amount (22.61 g). BCNC hydrolyzed with 1 M HCl exhibited the highest crystallinity (86%) and an elongated rod-like morphology. In contrast, hydrolysis with 4 and 5 M HCl caused carbonization, reducing crystallinity to below 30%. Particle size analysis showed the largest particle size for BCNC-2 (549.4 nm) and the smallest for BCNC-5 (207.2 nm). This research highlights the potential of glucomannan as a resource to produce BCNC for sustainable materials for various applications.
Modernization of hydroponic farming using rice husk for community food security in Karang Langit, Lamongan Pujiastuti, Caecilia; Muchamad, Raka Selaksa Charisma; Rohmah, Aisyah Alifatul Zahidah; Chakim, M. Ghufron; Fajrin, Alifah Nur Aini; Rizal, Achmad; Azka, Salsabilla
Community Empowerment Vol 10 No 8 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.14476

Abstract

Rice husk waste is an abundant agricultural byproduct in Karang Langit Village, Lamongan, but its utilization is still limited, posing a potential environmental problem. This community service program aims to modernize agricultural practices by utilizing rice husk as a hydroponic growing medium to support food security and promote a circular economy. The methods applied include community coordination, carbonization of rice husks, preparation of the hydroponic system, and both theoretical and practical hands-on training. Evaluation results show a significant increase in participants’ knowledge by 32%. A total of 85% of participants successfully prepared a viable rice-husk-based growing medium, and 75% were able to cultivate and harvest leafy vegetables in the trial phase. Additionally, a farmer group was formed and is committed to independently continuing hydroponic practices after the program’s conclusion. These results confirm that utilizing rice husk as a hydroponic medium not only enhances community skills and self-sufficiency but also opens new economic opportunities. This model is recommended for replication in other agricultural areas to support local food security and environmental sustainability.
Co-Authors Achmad Rizal Azka, Salsabilla Chakim, M. Ghufron Erwan Adi Saputro Fajrin, Alifah Nur Aini Muchamad, Raka Selaksa Charisma Muchammad, Raka Selaksa Charisma Nailah, Rossesari Ni’mah, Hikmatun Pujiastuti, Caecilia Sari, Citra Yulia Setiyo Gunawan Siti Nurkhamidah Tirta, Anggi Tri Widjaja Wardhono, Endarto Yudo