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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Kimia Riset Journal of Energy, Mechanical, Material and Manufacturing Engineering FLUIDA Fullerene Journal of Chemistry Jurnal Difusi Industrial Research Workshop and National Seminar Jurnal Teknik Kimia dan Lingkungan
Yulistiani, Fitria
Jurusan Teknik Kimia, Politeknik Negeri Bandung
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Journal : FLUIDA

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The Effect of Maltodextrin Concentration and Spray Dryer Drying Temperature on the Characteristics of Coconut Milk Powder Yulistiani, Fitria; Nuraeni, Alifia; Sheilla Aulia Sofiatul Mardiah; Hidayatulloh, Irwan; Elizabeth, Lidya; Nurcahyo
Fluida Vol. 16 No. 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4006

Abstract

Coconut milk has a higher water content than other contents, so microbes can easily damage and spoil it. To obtain a low-moisture powder product, the liquid coconut milk was dried using a Buchi Mini Spray dryer B-290 with inlet temperatures of 150°C, 160°C, and 170°C. The researchers added maltodextrin to coconut milk, which had a ratio of grated coconut to the water of 1:3, in concentrations of 9%, 10%, 11%, 12%, and 13%. The addition of maltodextrin and the use of drying temperature did not significantly affect the pH, solubility, and percentage of product mass but did significantly affect the moisture content. The best operating conditions for producing coconut milk powder were at a maltodextrin concentration of 13% and a temperature of 170°C. Under these conditions, the produced coconut milk powder had a pH value of 6.12, a moisture content of 4.56%, a solubility of 98.74%, a product mass of 24.99 grams and an overall percentage of product mass of 21.32%.
The Effect of Antimicrobial Extract on The Characteristics of Tomatoes Coated by Edible Coating based on Tapioca Flour Yulistiani, Fitria; Nurarofah, Adela Putri; Azzahra, Fadila Isra; Rispiandi
Fluida Vol. 16 No. 2 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i2.4405

Abstract

The edible coating is a food coating material inhibitor of transpiration and respiration. Layer is not fully effective in preventing food spoilage. The spoilage process can occur more quickly if fruit with high moisture content has infected. The research aimed to determine optimum concentration of antimicrobial extract in maintaining shelf life and shrinkage of tomatoes, dominant bacteria in fruit spoilage, between Escherichia coli or staphylococcus. Figure out antimicrobial extracts that are effective in preventing microbial growth. Research begins with the extraction process, testing the active compounds in the extract, combining edible coatings and white turmeric and bitter melon extract with concentrations of 0%, 2.5%, 5%, 10%, 20%, 30%, and 100 respectively), tomato fruit coating. The tests included shelf life, weight loss, best antimicrobial extract, and inhibition diameter. The results more concentration of the extract made the shelf life longer to 14 days and reduced shrinkage by 3.53%. Secondary metabolite compounds in the form of saponins, steroids, and triterpenoids. The minimum concentration of 30% bitter melon and white turmeric extract to prevent bacterial activity and the diameter of the inhibition zone in the range of 10-12 mm showed the extract had the moderate ability. The more dominant bacteria in tomato fruit rot is Staphylococcus aureus.
The Impact of Bifunctional Catalyst Synthesis Method Cu/ZnO/ZrO2/Al2O3-HZSM-5 on Dimethyl Ether Production from CO2 and H2 Adhitasari, Alfiana; Yulistiani, Fitria; Jahulan, Tufana Muhallik; Fadhillah, Fauzan
Fluida Vol. 17 No. 1 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i1.4782

Abstract

Indonesia has initiated a zero-carbon emission plan; one strategy is to replace Liquid Petroleum Gas (LPG) with eco-friendly fuels like Dimethyl Ether (DME). However, high Operational Expenditure (OPEX) for CO2 conversion technology poses a challenge. This research aims to address these techno-economic barriers by examining how catalyst synthesis methods, specifically Ultrasonic (US) and coprecipitation (CP), impact the performance of the bifunctional catalyst Cu/ZnO/Zr/Al2O3 – H+ Zeolite Socony Mobil-5 (CZZA-HZSM-5) in DME synthesis. The catalysts are characterized using the Brunauer-Emmett-Teller (BET) method and tested in a fixed-bed reactor at 240°C and 27.6 bar, followed by a bubble reactor containing methanol. Gas Chromatography-Mass Spectrometry (GC-MS) is used for analysis. The US method produces catalysts with higher surface area, pore volume, and average pore diameter than the CP method, with values of 45.93 m²/g, 0.3822 cc/g, and 1.6646 nm, respectively. Correspondingly, the US catalyst shows higher CO2 conversion and methanol yield, at 13.3% and 59.7%. DME as the final product is undetected in GC-MS analysis, likely due to differences in HZSM5 specifications, high reaction rates, and ΔG values above 1. This study enhances understanding of how catalyst synthesis methods affect CO2 conversion efficiency, crucial for developing sustainable fuel alternatives.
Co-Authors Agati, Risdo Satriya Alfiana Adhitasari Astrinida Rizkina Dwi Pancani Azzahra, Fadila Isra Elizabeth, Lidya Fadhillah, Fauzan Fania Zulfa Salsabila Haidar, Aria Henry Heriyanto Hermagasantos Zein Hernawan, Kholiq Hidayatulloh, Irwan Jahulan, Tufana Muhallik Keryanti, Keryanti Kurnia, Dianty Rosirda Dewi KURNIASETIAWATI, ANNISA Linda Maulani Mariatha Martha Miranti Agustina Muhari, Emma Hermawati Nadya Amelinda Zahar Nancy Siti Djenar Naura Alfairuzy Quluby Neila Zakiah Hanun Nisya Qonita Zahra Nuraeni, Alifia Nurarofah, Adela Putri Nurcahyo Nurcahyo, Nurcahyo Permanasari, Ayu Ratna Prihandini, Ghusrina PURWINDA IRIANI Revani Triananda Rispiandi Rispiandi Rizka Khairiyyah Azzahra Rizka Khairiyyah Azzahra Robby Sudarman Rosyidah Khoirunnisa Mahdan Royfa Fenandita Finadzir Rusdiyana Nur Putri Salimi Sheilla Aulia Sofiatul Mardiah Shoelarta, Shoerya Sihombing, Rony Pasonang Sri Utami Teguh Sasono Utary Nur Rachmani Fauzan Wachjoe, Conny K. WACHJOE, CONNY KURNIAWAN Wulan Suci Ramdhayani YANTI SUPRIANTI, YANTI Yaumi Istiqlaliyah Yulinda Alhay Nurhafshah Yulinda Alhay Nurhafshah