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All Journal Journal Of Carbazon Jurnal Riset, Inovasi, Teknologi & Terapan
Aulia, Rauzatul
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Characteristics of Cellulose Nanofibrils From Arabica Coffee Skin Prepared by the Acid Hydrolysis Zulnazri, Zulnazri; Dewi, Rozanna; Muarif, Agam; Fikri, Ahmad; Aulia, Rauzatul; Amalia, Nabuia; Firda, Hanisyah
Journal of Carbazon Vol 2, No 1 (2024): June 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jocarbazon.v2i1.38686

Abstract

Cellulosenanofibrils (CNF) is a new generation material that has high performance, good physics and medical properties and is a renewable material that has been developed from various sources using the acid hydrolysis method. CNF synthesis is generally obtained from logs that have a high amount of cellulose fiber. Cellulose nanofibrils (CNF) from arabica coffee skins have great potential to be developed as raw materials for medicines, which function as wound healing agents, surgical sutures, diet medicines, and skin softeners. CNF is produced from Arabica coffee skin through delignification, namely the removal of lignin and hemicellulose by extraction with alkali until -cellulose is obtained, then CNF is synthesized through hydrolysis using dilute acid. From the coffee skin extraction results, a high cellulose yield was obtained, reaching above 24.30% and crystallinity reaching 79.60%. Hydrolysis by 10%, 12% and 15% HCl with a reaction time of 2 hours, the respective crystallinity was 80.66; 79.06; and 77.69%.
Pemanfaatan Limbah Nanas (Ananas Comosus L. Merr) Sebagai Penggumpal Alami Pada Proses Pembuatan Tahu Kedelai Elfiana, Elfiana; Salmyah, Salmyah; Aulia, Rauzatul
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 4, No 1 (2025): Desember
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v4i1.8626

Abstract

Pineapples contain many useful ingredients, one of which is acid and the enzyme bromelain. This content is also found in pineapple waste which we can use as an alternative coagulating agent for tofu. This content is able to bind proteins into lumps in soybean juice to form curd (clumps of tofu). In this research we used pineapple waste to extract the acid content remaining in pineapple waste. This is also an effort and solution to reduce waste in the surrounding environment and add economic value to pineapple waste which is usually not utilized. This research aims to find out how the volume of pineapple waste juice and soaking time influence the tofu making process. The process method is that the soybeans are soaked for 6 soaking times each; 8; 10; and 12 hours. After soaking the soybeans, they are ground using a grinder, then the soybean juice is filtered from the dregs and boiled for about 15 minutes, then the coagulation process is carried out with variations in the volume of pineapple waste juice, namely 20; 40; 60; 80 and 100 ml. Put the soybean juice that has coagulated into the mold, wait until the tofu forms. The results of the research showed that the best water content, texture and protein content were obtained from making tofu by soaking for 6 hours with 60 ml of pineapple waste coagulating agent. The water content result was 60%, which was liked by many panelists, the texture test was 212.5 gf and the protein value was 15.63%. The results obtained in this research are in accordance with SNI 01-3142-1998.
Co-Authors Agam Muarif Ahmad Fikri Amalia, Nabuia Elfiana Elfiana, Elfiana Firda, Hanisyah Rozanna Dewi Salmyah, Salmyah Zulnazri, Z