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All Journal GEMA TEKNOLOGI METANA agriTECH Indonesian Food Science and TechnologyJournal Journal of Vocational Studies on Applied Research Jurnal Rekayasa Proses Jurnal Sains dan Kesehatan Dinamika Kerajinan dan Batik: Majalah Ilmiah Palawa Jurnal Pengabdian Kepada Masyarakat
Vita Paramita
Program Diploma Teknik Kimia, Fakultas Teknik, UNDIP. Jl. Prof. Sudarto, SH Tembalang, Semarang 50239
Agriculture, Biological Sciences & Forestry Arts Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Antibacterial Activity and Color Evaluation of Natural Color Fabric from Terminalia bellerica Coated with TiO2 Amalia, Rizka; Pujiastuti, Alfyan; Paramita, Vita; Kusumayanti, Heny
Dinamika Kerajinan dan Batik: Majalah Ilmiah Vol. 40 No. 2 (2023): DINAMIKA KERAJINAN DAN BATIK : MAJALAH ILMIAH
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Industri Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22322/dkb.v40i2.8006

Abstract

As a basic human need, the development of textiles still needs to be studied. At first, the textile dyeing process used natural dyes. However, along with the development of technology with the discovery of synthetic dyes for textiles, the use of natural dyes began to be abandoned. Natural color fabrics have many advantages, while promoting disadvantages, such as the appearance of microorganisms on the fabric. To improve the function of the fabric, the addition of antibacterial agent to the fabric is important. This study aims to investigate the optimum condition for producing natural color fabric from Terminalia Belerica’s peel with the application of TiO2 as an antibacterial agent, using the pad dry cure method. The results of the TiO2 coating process on natural dye fabrics are based on its antimicrobial activity. SEM EDX, color strength, and fabric stiffness were also characterized by its physical properties. The analysis results show that the most optimum condition for the stability of color aging was in the 2nd experiment at a concentration of TiO2 at 1%, without curing and sizing of 75%. For stiffness stability analysis, the optimum result was obtained in the third experiment, namely the concentration of TiO2 at 0.5%, with curing and without sizing of 98%. The most influential effects on the antibacterial test include aging, brightness, and stiffness, namely variable sizing with a negative effect. The results of testing antibacterial activity on natural color fabrics of jolawe fruit peel extract applied with TiO2 show that the assessment process caused the fabric to be easily contaminated by bacteria, where the inhibition zone value was 0 mm. The SEM-EDX test did not show any damage to the fabric, and there were grains or lumps on the fabric fibers due to TiO2 coating.
Optimization of Coffee Bean Extraction Using Subcritical Water: A Response Surface Methodology Approach for Maximizing Caffeine and Antioxidant Yield Sutrisno, Sutrisno; Yulianto, Mohamad Endy; Ariwibowo, Didik; Paramita, Vita; Utari, Febiani Dwi; Azhara, Belinda; Monawisya, Abitha; Rizki, Muhammad
Indonesian Food Science and Technology Journal Vol. 9 No. 1 (2025): Volume 9 Number 1, December 2025 |IFSTJ|
Publisher : Department of Technology of Agricultural product (THP) Jambi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/ifstj.v9i1.43017

Abstract

This study explores the optimization of Subcritical Water Extraction (SWE) for maximizing caffeine and antioxidant yields from coffee beans using Response Surface Methodology (RSM). A Central Composite Design (CCD) was employed to evaluate the interaction effects of three key variables: temperature, solvent volume, and extraction time. As an eco-friendly alternative to conventional extraction methods, SWE was optimized based on these parameters. Statistical analysis confirmed their significant influence on bioactive compound recovery, with optimal conditions—162.440 °C, 28.409 mL of solvent, and 27.389 minutes—yielding 0.395 mg/mL caffeine and 27.039 μg/mL antioxidants, achieving a composite desirability value of 0.873. SEM analysis revealed significant structural degradation in the SWE-treated coffee extract, enhancing the release of caffeine and antioxidants by increasing porosity and cell wall disruption. This improved extraction efficiency, combined with SWE’s solvent-free nature and scalability, reinforces its role as an efficient method for extracting bioactive compounds from coffee, supporting its adoption as a green technology in sustainable food processing.
Co-Authors Adiatma, Afifta L Aini, Falasifah N Allamah, Labibah Ardi, Pradipta Risma Rukma Ardi, Pradipta Risma Rukmana Arifah, Difa Al Asari, Yunita Dwi Azhara, Belinda Berkah, Fitroh Bawa Broto, R. T. D. Wisnu Damayani, Intan Ardina Devanda, Ilyas Rabbani Didik Ariwibowo Elok Faiqoh Fatmawati, Zulaikhah Fauzi, Nurrohmat FS Nugraheni S Hariyatno, Shelvin Putri Heny Kusumayanti Hermawan Dwi Ariyanto Hidayatul Masruroh Ikmalanas, Salma Imamsyah, Ragil Agnes Safira Indah Hartati Irene, Imer Ayu Karyadi, Nabila Putri Khasanah, Vina Nafidzatul Kurniawati, Yesi Laila Faizah Achmad, Laila Faizah Latif, Abdullah Leviana, Wilandika Malikah, Anna Irdatul Margaretha Tuti Susanti Masruroh, Ulla Disky Meizalin, Anna Amelia Milzam, Muhammad Mohamad Endy Y Yulianto Monawisya, Abitha Muhammad Rizki Muhammad, Firnanda Rayyan Mulyaningsih, Rizki Namira, Zahra Rahma Nisa, Qurrotun A'yuni Khoirun Nolalita, Aureliya Helmaleni Nugraheni, Fransisca Sri Nurlaili, Fitri Dwi Nur’ Aini, Laela Oktaviani, Rosiana Pradasari, Aprilina Siska Pradipta, Tito Prameswari, Nida Hamidah Pramudika, Satya Pranita, Zahra Aumy Pudiastuningtyas, Nurul Pujiastuti, Alfyan Puspita, Anggrek Sinar Putry, Cindyana Qorina, Zahra Nurjannati Rahman, Azizah Rasyid, Zulfa Wulandari Riadhus Shalihin, Muhammad Zaki Rizka Amalia Rizka, Rashinta Sansabhilla, Faradiva Santoso, Shafira Ardaneswari Sapatra, Enrico Fendy Saputri, Arum Dyah Saputri, Rizky Yunita Sari, Gustry Ratna Sari, Ratmi Rahma Satrio, M. Akbar Shalihin, Muhammad Zaki Riadhus Siregar, Vynda Dindasari Sitio, Septi Enjelina Sovia, Ghina Sutrisno, Sutrisno Tasmalia, Ria Udin Bahrudin, Udin Utari, Febiani Dwi Wahyunimgsih, Wahyunimgsih Wibisono, Enggar Sulistyo Wikanta, Deddy K Yando, Adhit Mardita Zainal Abidin