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Aster Rahayu
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aster.rahayu@che.uad.ac.id
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ijce@che.uad.ac.id
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Campus IV, Jl. Ringroad Selatan, Kragilan, Tamanan, Kec. Banguntapan, Bantul, Daerah Istimewa Yogyakarta 55191.
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Kota yogyakarta,
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INDONESIA
Indonesian Journal of Chemical Engineering
Published by Universitas Ahmad Dahlan
ISSN : -     EISSN : 30256674     DOI : https://doi.org/10.26555/ijce
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Materials Science & Nanotechnology
Indonesian Journal of Chemical Engineering aims to provide an international platform for scientists, researchers, and academicians to promote, share and discuss new findings, current issues, and developments in the different areas of Chemical Engineering. This journal encourages a forum for publishing research related to the Sciences, Energy, Environmental and Food Pharmaceutical fields. This journal encompasses Original Research Articles, Review Articles, and Short Communications, including Fundamental and applied chemical reaction engineering, Materials engineering, Catalyst, Environmental chemical engineering, Sustainable science and engineering, Food, Drugs and Cosmetics, Renewable energy (Biomass and Hydropower) and Non-Renewable energy (petroleum, natural gas and coal).
Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)
Articles 33 Documents
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Review : Exploration of Squalene from Natural Materials as its Potential in Health and Food Fields Permadi, Adi; Wilson, Mutiara
Indonesian Journal of Chemical Engineering Vol. 2 No. 2 (2024)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v2i2.1423

Abstract

Squalene, a natural isoprenoid, plays a critical role in sterol biosynthesis and exhibits various health benefits, including antioxidant, anti-inflammatory, and antitumor properties. Found in sources such as shark liver oil, amaranth, olive oil, and microbial species, its demand has surged across pharmaceutical, cosmetic, and food industries. However, traditional extraction methods, predominantly from shark liver, raise sustainability concerns. This study explores alternative sources and production strategies, focusing on plant-based and microbial synthesis of squalene. Amaranth seeds and olive oil were highlighted as promising renewable sources due to their high squalene content. Advances in synthetic biology and metabolic engineering have enabled microbial platforms, such as genetically modified yeasts and microalgae, to produce pharmaceutical-grade squalene sustainably. Moreover, the development of innovative extraction techniques, such as supercritical CO₂ extraction, enhances yield and purity while minimizing environmental impact. The research further emphasizes squalene’s potential as a precursor for cholesterol, hormones, and vitamins, alongside its role in improving human health through applications in vaccines, cardiovascular protection, and cancer prevention. Future work should prioritize optimizing extraction methods, exploring untapped natural sources, and scaling microbial production to address the growing global demand sustainably.
Optimizing Hospital Waste Management Systems through Statistical Approaches: Evidence from a Central Java Hospital Adi Permadi; Viola Lulu Aulia; Aulia Audistia Rohmah; Tiara Eka Supriyanti; Ahmad Lupi
Indonesian Journal of Chemical Engineering Vol. 3 No. 1 (2025)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v3i1.1425

Abstract

Hospital wastewater contains various contaminants that can endanger both environmental and public health if not managed properly. This study investigates the optimization of a hospital wastewater treatment system in Purwokerto using descriptive statistical analysis. Data were collected for the year 2023 from one hospital and included parameters such as Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), ammonia, oils and grease, pH, total coliform, and several heavy metals including cadmium. Results indicate that most parameters met environmental quality standards set by the Ministry of Environment Regulation No. 68/2016, except for total coliform and cadmium, which occasionally exceeded the thresholds. The study suggests several optimization strategies including improved disinfection methods, regular monitoring, technological upgrades, and better staff training to enhance the treatment system's efficiency and ensure compliance with environmental regulations.
Comparison of Proximate Composition of Coconut Dregs Flour Produced by Dry and Wet Processes as an Alternative to Wheat Flour Sulistiawati, Endah; Santosa, Imam
Indonesian Journal of Chemical Engineering Vol. 3 No. 2 (2025)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v3i2.2046

Abstract

Currently, Indonesia relies on wheat imports to meet its domestic flour demand. In contrast, the country is rich in local agricultural resources, particularly coconuts. Substantial amounts of coconut dregs are discarded during the production of coconut milk and coconut oil, contributing to environmental pollution. This study explored the conversion of coconut dregs into flour using two processing methods: dry and wet. The dry method involved grating fresh coconut meat, roasting it at 80-100 °C, and pressing to extract the oil, producing coconut dregs as a byproduct. The wet method involved grating fresh coconut meat, mixing it with water, and filtering to make coconut milk, with the coconut dregs as a byproduct. Subsequently, the coconut dregs were dried by roasting (80-100 °C), then grinding and screening. Coconut dregs flour was subjected to proximate analysis to determine its water, ash, protein, fat, and carbohydrate content. In this study, a proximate analysis was conducted on wheat flour for comparison. Coconut dregs flour from the dry process contained 53.40% fat, 9.45% protein, and 32.62% carbohydrate. The wet process produced flour with a fat content of 36.47%, protein 0.36%, and carbohydrate 55.08%. The wheat flour contained 1.11-2.10% fat, 0.6-1.1% protein, and 84.28%-86.05% carbohydrate. Coconut dreg flour could be combined with other flours to create nutritious food options, thereby reducing reliance on wheat flour.

Page 4 of 4 | Total Record : 33

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