Article Per Year (5 Year)
p-Index From 2021 - 2026
1.116
P-Index
This Author published in this journals
All Journal METANA Jurnal Penelitian Pertanian Terapan AGRISAINTIFIKA Jurnal Ilmu-ilmu Pertanian Agroindustrial Technology Journal Journal of Applied Food Technology JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI
Sumirat, Riska
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Other

Published : 6 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 6 Documents
Search

 1 
Analisis Minyak Terpentin Hasil Penyulingan di Pabrik Gondorukem dan Terpentin Sindangwangi Rosalinda, S.; Sumirat, Riska
METANA Vol 20, No 1 (2024): Juni 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/metana.v20i1.61287

Abstract

Minyak terpentin merupakan salah satu komonitas ekspor yang potensial. Minyak terpentin yang diperoleh dari getah pinus merkusii mengandung α-Pinene yang digunakan untuk berbagai aplikasi. Pentingnya peranan minyak terpentin dalam berbagai industri dipengaruhi oleh kualitasnya khususnya komponen kimia. Penelitian ini bertujuan untuk mengidentifikasi komponen kimia minyak terpentin dan kualitasnya di Pabrik Gondorukem dan Terpentin (PGT) Sindangwangi Jawa Barat. Penelitian ini menggunakan metode eksperimental laboratorium dengan analisis deskriptif dan studi literatur pada jurnal terakreditasi. Hasil penelitian menunjukkan bahwa 12-16 komponen terpentin teridentifikasi. Komponen kimia minyak terpentin terdiri dari α-Pinena, Kamfena, β-Pinena, β-Mirsena, Dihidro-4-karena, δ-Karena, Simol, Limonena, γ-Terpinena, α-Terpinolena, α-Pinena oksida, Thujol dan Verbenol α-Tujen, β-Palandrena, Cinema, dan Humulena. Selain itu, terpentin memiliki bau yang khas, berwarna transparan, dan kandungan α-pinene sebesar 83,28%, massa jenis 0,888 Kg/m3 dan VOC 1,07%.   Turpentine oil is one of the potential export commodities in Indonesia. Turpentine oil obtained from the sap of Pinus merkusii contains α-pinene, which is used for various applications. The important role of turpentine oil in various industries is influenced by its quality, especially the chemical components. This study aims to identify the chemical components of turpentine oil and its quality at the Sindangwangi Gondorukem and Turpentine Factory (PGT), West Java. This research used a laboratory experimental method with descriptive analysis and a literature study in accredited journals. The results showed that 11–14 turpentine components were identified. The chemical components of turpentine oil consist of α-Pinene, Kamfena, β-Pinene, β-Mirsena, Dihydro-4-carene, δ-Carene, Simol, Limonena, γ-Terpinene, α-Terpinolene, α-Pinene oxide, Thujol and Verbenol, α-Tujen, β-Palandrena, Cinema, and Humulena. In addition, turpentine oil has a distinctive odor, transparency, and α-pinene content of 83.28%, a density of 0.888 kg/m3, and a VOC of 1.07%.
Tahapan Proses Produksi Dan Karakterisasi Bioplastik Dari Limbah Tongkol Jagung Sumirat, Riska; Rosalinda, S.; Mardawati, Efri; Nurliasari, Desi; Kastaman, Roni
Jurnal Penelitian Pertanian Terapan Vol 23 No 4 (2023)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v23i4.2691

Abstract

Plastic is the dominant packaging used by the public, so it has the potential to damage the environment. It is necessary to synthesize raw materials for making plastics that are degraded by microorganisms, namely bioplastics. Bioplastics are packaging materials that are synthesized from natural raw materials so that they can be degraded in the environment. The raw material used is corncob because it is abundant and the benefits are not maximized. Research is needed to examine the stages of the production process and the characterization of bioplastics from corncob waste. The purpose of this study was to examine the stages of the production process and the characterization of bioplastics from corncob waste. This study used a laboratory experimental method with descriptive analysis. The production of bioplastics consists of the stages of making cellulose, cellulose acetate, and bioplastics using the solution casting method. The stages of cellulose isolation include hydrolysis, delignification, pulping, and bleaching, which showed an increase in cellulose content from 32.14% to 79.36%. Cellulose is acetylated to become cellulose acetate and has an acetyl content of 11.70 ± 0.40% with a yield of 121.16 ± 0.98%. The production of bioplastics uses a composition of cellulose acetate and chitosan at 50%:50% (w/w) successively. The resulting bioplastic has a thickness of 0.345 ± 0.024 mm, a density of 0.83 ± 0.03 g/cm3, a moisture content of 13.13%, a biodegradation value of 95.19%, a water resistance of 205.57%, and is transparent. The mechanical properties of bioplastics include a tensile strength of 22.3 N/m, an elongation of 21.11%, and a modulus of elasticity of 0.307 Mpa.
Isolation and Characterization of Cellulose from Biomass: A Methodological Review: Isolation and Characterization of Cellulose from Biomass: A Methodological Review Hanifah, Aisyah; Sumirat, Riska; Soerya, Sarah Fitri; Aristri, Manggar Arum
Agroindustrial Technology Journal Vol. 9 No. 1 (2025): Agroindustrial Technology Journal [ATJ]
Publisher : Universitas Darussalam Gontor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/atj.v9i1.14568

Abstract

The isolation and characterization of cellulose from biomass have garnered increasing research interest due to cellulose’s pivotal role in supporting sustainable material innovations across various industries. This study presents a comprehensive review of recent advancements in cellulose isolation methods, including chemical, mechanical, and enzymatic techniques, emphasizing their efficiencies in yield and purity. A bibliometric analysis using VOSviewer was also conducted to map research trends, identify leading authors and institutions, and visualize keyword co-occurrence networks from publications between 2015 and early 2025. The bibliometric results revealed three major thematic clusters in cellulose research: extraction and pretreatment technologies, material characterization techniques, and structural property analysis. Publication trends indicated dynamic research developments, particularly a surge in interest following advances in green extraction technologies. Overall, this review highlights the shift towards sustainable cellulose isolation strategies, evaluating the advantages and disadvantages of various methodologies. It provides insights into the strengths and limitations of current techniques, while also outlining potential future directions for research and industrial applications. Keywords: Biomass, Bibliometric Analysis, Cellulose, Characterization, Isolation.
ANALYSIS SWOT OF COFFEE AT CV FRINSA AGROLESTARI Rosalinda, S; Salsabila, Rike; Sumirat, Riska; Ratnaduhita, Astari
Agrisaintifika: Jurnal Ilmu-Ilmu Pertanian Vol. 8 No. 1 (2024): Agrisaintifika
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/ags.v8i1.5363

Abstract

Coffee (Coffea L.) is one of the plantation commodities that has a high economic value in Indonesia. One of the coffee producers in Indonesia is CV Frinsa Agrolestari in Pangalengan, West Java. CV Frinsa Agrolestari is a family company engaged in the coffee business, starting from nursery, planting, and processing coffee beans to breeding coffee varieties. The purpose of this research is to identify internal and external environmental factors to obtain alternative strategies for CV Frinsa Agrolestari. The research method used is the survey method with Strengths, Weaknesses, Opportunities, and Threats (SWOT) analysis. Data on strengths, weaknesses, opportunities, and threats were obtained from the internal and external environment of CV Frinsa Agrolestari. Based on the analysis, it shows that CV Frinsa Agrolestari is in quadrant I (positive, positive). This position signifies a strong company. So the strategic recommendation given for CV Frinsa Agrolestari is progressive, meaning that the company is in prime and steady condition to continue to expand, enlarge growth, and achieve maximum progress. Keywords: CV Frinsa Agrolestari, External, Internal, Coffee, Quadrant I, SWOT.
Cross-sectional Method of Sugar Content and Essential Nutrients in Commercial UHT Milk for Toddlers in Indonesia Ratnaduhita, Astari; Kholis, Muhammad Nur; Sumirat, Riska; Anam, Choiroel; Mufandi, Ilham; Tho’at, Salman Mujahidillah
Journal of Applied Food Technology Vol 12, No 2 (2025)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17728/jaft.30125

Abstract

UHT (Ultra High Temperature) milk is widely consumed by toddlers due to its practicality, yet concerns remain regarding the high variability of sugar levels and the adequacy of essential nutrients in commercial products. This study aimed to evaluate the total sugar content, non-lactose sugars, main milk composition, thickening agents, prebiotic fiber, and essential fats in UHT milk marketed for children aged 1–5 years, and to assess their compliance with BPOM, WHO, and Codex Alimentarius recommendations. A cross-sectional design was applied, involving purposive sampling of 27 commercially available products from modern retail outlets. Nutrient information was collected through high-resolution documentation of nutrition labels, followed by descriptive–comparative and regulatory benchmarking analyses. The findings indicate that 70.4% of products contained excessive to high total sugar levels (>6 g/100 mL), and only 7.4% met Codex energy-based criteria. UK FSA Front-of-Pack classification similarly showed that 74.1% of products fell into the high-sugar (red) category. Composition analysis revealed substantial variation, with several products relying on water, milk solids, or reconstituted milk instead of fresh milk. Thickening agents such as maltodextrin were present in selected variants, while essential fibers including FOS, GOS, and inulin were found at 1–3 g per serving, contributing up to 15% of toddlers’ daily fiber needs. Total fat content ranged from <2.5% to 6%, and some products included essential fats such as DHA or omega-3. Overall, most UHT milk products for toddlers contained sugar levels exceeding recommended limits and showed inconsistent compliance with nutritional composition standards. Strengthening product formulation, clearer labelling, and regulatory monitoring are needed to support healthier milk choices for toddlers.
Penghambatan Kekerutan Pada Kulit Tomat Dengan Edible Coating Limbah Ampas Tebu dan Gathot (Singkong Terfermentasi) Ratnaduhita, Astari; Kholis, Muhammad Nur; Sumirat, Riska
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 13 No 1 (2025): Maret
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JRMA.2025.v13.i01.p09

Abstract

Tomatoes have thin peels that are susceptible to post-harvest damage, especially in tropical climates such as Indonesia. An effort to prevent damage is cold storage. However, cold storage causes chilling injury to tomato peel. This study aims to develop an edible coating formulation with bagasse and gathot (fermented cassava), and to determine the best treatment of the edible coating by application to tomato at cold storage for 21 days. The research was designed using a completely randomized design (CRD) with a gathot flour concentration of 0.75% and a variation of sugarcane bagasse flour concentration, namely: 0%; 1%; 2%; 3%. The parameters observed were weight loss, pH, total soluble solids and moisture content and analyzed by parametric statistics with a significance level of 5%. The results showed that the edible coating formulation with sugarcane bagasse flour and gathot flour had a significant effect (α < 0.01) on changes in weight loss, total soluble solids, pH and moisture content in tomatoes for 21 days. Edible coating with C1 formulation (sugarcane bagasse flour 1% and gathot flour 0,75%) became the best treatment of this study because it was able to maintain freshness and showed inhibition of chilling injury in tomatoes until day 21 in cold storage.
Co-Authors Astari Ratnaduhita Choiroel Anam Efri Mardawati Hanifah, Aisyah Ilham Mufandi Manggar Arum Aristri Muhammad Nur Kholis, Muhammad Nur Nurliasari, Desi Roni Kastaman Rosalinda, s S. Rosalinda, S. Salsabila, Rike Sarah Fitri Soerya Tho’at, Salman Mujahidillah