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All Journal Syntax Literate: Jurnal Ilmiah Indonesia FLUIDA Jurnal Migasian Akamigas Balongan Indramayu International Journal of Applied Technology Research Jurnal Migasian
Prihandini, Ghusrina
Jurusan Teknik Kimia, Politeknik Negeri Bandung
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Journal : International Journal of Applied Technology Research

 1 
Green Downstream Processing By Using Hydrothermal Extraction For Recovering Flavonoid, Phenolic And Antioxidant Activity From Moringa Oleifera Leaves Ghusrina Prihandini; Paqih Purnama Alam
Jurnal Internasional Penelitian Teknologi Terapan Vol 2 No 1 (2021): April 2021
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v2i1.36

Abstract

Well known as rich in phenolic compounds, Moringa oleifera mature leaf extract show significant antioxidant activity both in vitro and in vivo. It has been widely used at cosmetic, medicine, and functional food sector. Hydrothermal extraction, one of the green environmentally friendly method that fit to M. oleifera feedstock for recovering natural antioxidant namely flavonoid, phenolic, and antioxidant activity. Three parameters were used at this study such as sample-solvent ratio, running temperature and extraction time. Flavonoids were evaluated with 2.4 Dinitrophenyl hydrazine colorimetric, whereas phenolics were measured by tanat acid which react with Foulin ciocealteu reagent. Antioxidant activity was measured by DPPH. The optimum result was obtained at 15 minutes with 140 0C for total flavonoid content (TFC) 18.98 mg/g whereas 170 0C for total phenolic content (TPC) and antioxidant activity 48.73 mg tanat acid/dried extract; 44.76 mg/L respectively
Effect of Process Variables and Zeolite Adsorbent in Coffee Bean Drying Soeswanto, Bambang; Edi Wahyuni, Ninik Lintang; Prihandini, Ghusrina; Pratama, Yusuf; Firmansyah, Taufik Akbar; Widyabudiningsih, Dewi
Jurnal Internasional Penelitian Teknologi Terapan Vol 4 No 1 (2023): April 2023
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v4i1.100

Abstract

Green coffee beans to be stored for transportation must meet storage quality standards, especially the maximum moisture content of 12.5%, so the drying process must be carried out to achieve quality standards, but still economical. The study aims to obtain optimum operating conditions on the drying of Arabica-type coffee beans using a fluidized bed dryer assisted by zeolite adsorbents in a separated fluidized bed prior to heating, as well as calculating the energy consumption of blowers and air heater. The operating conditions were varied, namely air flow rate of 1.79 – 2.29 m/s, air temperature of 45 o C, 50 o C, and 55 o C, zeolite adsorbent mass of 150 g, 175 g, and 200 g. The coffee beans quality tests carried out were the moisture, carbohydrates, protein content, and the visual appearance of the beans. The results show that the optimum drying process of coffee beans resulting a minimum protein and carbohydrate damage are the air velocity of 2.1 m/s, air temperature of 55°C, drying time of 240 minutes, and zeolite adsorbent mass of 150 grams, with energy consumption of 5.02 KWH (equivalent to 180 MJ/T). The addition of zeolite as much as 150 grams, 175 grams, and 200 grams as adsorbent was able to reduce the relative humidity (RH) of air by 16.65%, 18.60%, and 21.17% respectively. The drying rate of coffee beans is mainly influenced by air temperature (more predominantly) than the adsorption of air humidity by zeolite.
Co-Authors Ahmad Fauzan Bambang Soeswanto Edi Wahyuni, Ninik Lintang Endang Widyastuti Fania Zulfa Salsabila Firmansyah, Taufik Akbar Ibrahim, Puji Astuti Mariatha Martha Marlina, Ari Muhammad Tri Sinarta Paqih Purnama Alam Pratama, Dhewangga Pratama, Yusuf Qobus, Muhammad Fauzy Ramadhana Rahmawati, Ranti Robby Sudarman Rosyidah Khoirunnisa Mahdan Rusdiyana Nur Putri Salimi Shoelarta, Shoerya Sihaloho, Rivan Sinarta, Muhammad Tri Wahyuni, Ninik Lintang Edi Widyabudiningsih, Dewi Yudha W N, Angga Yulistiani, Fitria