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All Journal Jurnal Teknologi Industri Pertanian Jurnal Pengolahan Hasil Perikanan Indonesia Techno.Com: Jurnal Teknologi Informasi Jurnal Keteknikan Pertanian Tropis dan Biosistem Tropical Animal Science Journal Agroindustrial Technology Journal Jurnal Teknologi & Industri Hasil Pertanian Jurnal Pijar MIPA ETAM: Jurnal Pengabdian kepada Masyarakat Jurnal Agroindustri Pangan TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Journal of Systems Engineering and Management
Aditya Wahyu Nugraha
Program Studi Teknologi Industri Pertanian, Institut Teknologi Sumatera
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Mechanical Engineering Physics Social Sciences Other

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Journal : Tropical Animal Science Journal

 1 
Free Ammonia Deliming: Effect of Tartaric Acid Addition as a Deliming Agent on The Quality of Wet Blue and Wastewater A. W. Nugraha; O. Suparno; N. S. Indrasti; Hoerudin Hoerudin
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (396.279 KB) | DOI: 10.5398/tasj.2020.43.2.176

Abstract

The objective of this study was to evaluate the pelt and wastewater characteristics after deliming process in an acid condition by tartaric acid, also wet blue properties that were formed. Various observed variables were the dose of tartaric acid, pelt thickness, calcium content, physical and chemical properties of wet blue, such as tensile strength, tear strength, elongation, shrinkage temperature, and chrome oxide content, as well as the pollutants content of wastewater as chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solid (TSS), and total dissolve solid (TDS). The experiment used a completely randomized design with a factorial arrangement. The first factor was pH variables consisted of 3 levels, i.e., 4, 5, and 6 in the final deliming solution. The second factor was the deliming time consisted of 3 levels, i.e., 45 min, 60 min, and 75 min. Data were analyzed using Analysis of Variance (ANOVA) and then Duncan’s Multiple Range Test (DMRT). The results showed that deliming for 60 min and the pH of 5 at the end of the solution was the best treatment to remove calcium content in the pelt and reduce the thickness of pelt. It did not affect the physical and chemical quality, such as tensile strength, tear strength, elongation at break, and shrinkage temperature of the wet blue produced. Also, the quality of wastewater produced was better than the use of ammonium sulfate as a deliming agent. It can be concluded that the use of tartaric acid as pH regulator of deliming stage at pH 5 for 60 min can be used as an alternative deliming agent to substitute ammonium sulfate.
The Properties of Wet Blue Added Crude Enzyme from Rhizopus oligosporus in the Acid Bating Process A. W. Nugraha; O. Suparno; N. S. Indrasti; Hoerudin
Tropical Animal Science Journal Vol. 45 No. 1 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.1.104

Abstract

Bating is one of the processes in leather production. This process is generally performed under slightly alkaline conditions, but it can also be done under acidic conditions. Rhizopus oligosporus is categorized as a microorganism that can synthesize acidic enzymes optimally in acidic conditions. This study aimed to evaluate the effect of the bating process using acid protease from R. oligosporus on the leather qualities tanned by chromium sulfate. The study used a completely randomized design where crude enzyme activity (0, 2.5, 5, 7.5, and 10 U mL-1) was a single treatment as an experimental design. Data were analyzed using ANOVA and furtherly tested using Duncan. The results show that the protease synthesized from R. oligosporus is potential to be used as a bating agent. The treatment with 2.5 U mL-1 activity was the best treatment in this study to improve leather (wet blue) properties like shrinkage temperature, ash content, and chrome oxide content. The quality of wet blue produced was better than that produced with conventional treatments. It can be concluded that the enzyme activity of 2.5 U mL-1 could be used as a bating-agent alternative in the acid bating stage.
Co-Authors Afifah, Amalia Agus Setiyono Andhik Ampuh Yunanto Anuraga Jayanegara Ayu Rahayu Saraswati Azhary Noersidiq Ba'adilla, Syukma Dani Putra, Endo Pebri Devita, Wilda Harlia Elsa Windiastuti Endo Pebri Dani Putra Fahrullah Fahrullah Fibra Nurainy Hoerudin Hoerudin Hoerudin Jatmiko Eko Witoyo Kustiariyah Tarman Laksono, Untung Trimo Larassati, Dyah Putri Liesbetini Haditjaroko Lisdayana, Nurmalisa Mahendra, Khoiri N. S. Indrasti N. S. Indrasti Nastiti Siswi Indrasti Nurbaiti O. Suparno O. Suparno Ono Suparno Pangestuti, Martasari Beti Praseptiawan, Mugi Pratama Satria, Borneo Pratama, Borneo Satria Putri Larassati, Dyah Sariati Sariati, Sariati Subara, Deni Susilawati Susilawati Susilawati, Susilawati Tri Hadiah Muliawati, Tri Hadiah Ulfah Izdihar Utami, Wirawati Chandra Vebera Maslami Wulandari, Annisa Dwi Wulandari, Anting Yunira, Eka Nur'azmi