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All Journal METANA International Journal of Applied Sciences and Smart Technologies Journal Of Chemical Process Engineering
Nurliasari, Desy
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering

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Analysis of Cellulose and Cellulose Acetate Production Stages from Oil Palm Empty Fruit Bunch (OPEFB) and Its Application to Bioplastics Hanifah, Aisyah; Mardawati, Efri; Rosalinda, S; Nurliasari, Desy; Kastaman, Roni
Journal of Chemical Process Engineering Vol. 7 No. 1 (2022): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jcpe.v7i1.805

Abstract

Oil Palm Empty Fruit Bunch (OPEFB) is a type of solid waste from the palm oil processing industry. The components of OPEFB include cellulose, hemicellulose, and lignin. OPEFB has a large cellulose content, so it possesses the potential to be used as a bioplastic material. The purpose of this research was to examine the stages of the bioplastics' production process and its characterization. The cellulose content of OPEFB as raw material and during the isolation process which includes hydrolysis, delignification, pulping, and bleaching are 39.59%, 56.00%, 59.85%, 61.48%, and 68.20%, respectively. Cellulose isolation produces α-cellulose content of 97.87%. The resulting cellulose acetate has an acetyl content of 25.93%. The bioplastics were then characterized to determine the effect of cellulose acetate, starch, chitosan, and glycerol on the physical and mechanical properties of the plastics. The results of the physical properties characterization include biodegradability, water absorption, and density with values of 78.73%, 38.26%, and 1.2% respectively. The results of the mechanical properties characterization include tensile strength, elongation, and modulus of elasticity with values of 0.729 MPa, 4.13%, and 17.5 MPa, respectively. The functional groups in the bioplastics, which are O-H, C-H, C-O, C=O, and N-H, are produced from the mixing process between cellulose acetate, starch, chitosan, and glycerol.
Storage and Packaging Evaluation for Preserving Polyphenols in Black Garlic Nurriyanti, Anggita Halimah; Mardawati, Efri; Nurhasanah, Siti; Nurliasari, Desy
METANA Vol 20, No 2 (2024): Desember 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/metana.v20i2.68113

Abstract

Black garlic (Allium sativum L.) is produced through a controlled thermal aging process, enhancing its phenolic and flavonoid content and increasing antioxidant, anti-inflammatory, and anticancer properties. This study aimed to evaluate the effects of different storage temperatures (30°C, 35°C, and 40°C) and packaging materials (paper core–PC and aluminum foil–AF) on the stability of these bioactive compounds. Black garlic was prepared by aging single clove garlic at 74°C for 12 days using a fermenter. The aged garlic was then packaged in PC and AF and stored under specified conditions. Total phenolic content (TPC) was determined using the Folin-Ciocalteu method, while total flavonoid content (TFC) was measured with the aluminum chloride colorimetric method. Results indicated that higher storage temperatures led to an insignificant reduction in both phenolic and flavonoid contents, with AF packaging providing better retention due to its superior barrier properties (TPC = 2.62–3.51 mg GAE/g and TFC = 1.57–2.09 mg QE/g). At 35°C, PC packaging also showed comparable performance, suggesting its potential as a sustainable alternative (TPC = 2.92 mg GAE/g and TFC = 2.09 g QE/g). The study highlights the importance of optimizing storage conditions and packaging materials to preserve the functional properties of black garlic. These findings provide valuable insights for the food industry in developing effective storage strategies to enhance the benefits of black garlic.
Recent Developments in The Influencing Variables of Hydrodistillation for Enhancing Essential Oil Yields in Indonesia: A Brief Review Dewantoro, Awaly Ilham; Alifia, Alvita Rahma; Handini, Tanti; Qolbi, Latifah Zainul; Ihsani, Dita Amelia; Nurliasari, Desy
International Journal of Applied Sciences and Smart Technologies Volume 06, Issue 2, December 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v6i2.9191

Abstract

Hydrodistillation is widely known as the simplest essential oils (EOs) isolation technique and is widely used by small-scale producers, such as in Indonesia. The main characteristic of hydrodistillation is the plant-source material of EOs soked in water, followed by boiling and diffusion. Variuos problems arise from the use of hydrodistillation, including the possibility of overheating, degradation of EOs because of the long heating time, difficulty in controlling the heat, and a slow process. The aim of this study was to review the recent developments in hydrodistillation technology that have been developed in Indonesia to improve the quality and yield of EOs. Bibliometric analysis trhough the Methodi Ordinatio was used to compile a systematic review of prior studies in the recent decade regarding the application of hydrodistillation in Indonesia. The results showed that five plant-source commodities were extensively isolated consisting of citrus, lemongrass, cinnamon, nutmeg, and ginger. Furthermore, this study investigated the variables that influnce the hydrodistillation process for EOs isolation. The variables were often evaluated according to the results are distillation time, pretreatment of raw materials, feed-to-solvent ratio, particle size, growth place, and plant developmental stage. A future perspective was considered and outlined to carroed out further novel study and development strategies. Keywords: Bibliometric analysis, Hydrodistillation, Plant commodities, Process variables, Pretreatment.
Co-Authors Alifia, Alvita Rahma Awaly Ilham Dewantoro Efri Mardawati Handini, Tanti Hanifah, Aisyah Ihsani, Dita Amelia Nurriyanti, Anggita Halimah Qolbi, Latifah Zainul Roni Kastaman Rosalinda, s Siti Nurhasanah