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All Journal Jurnal Dampak Journal of Biobased Chemicals (JOBC)
Relyando, Syahfa Adinda
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Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Environmental Science

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Optimasi Uji Total fenolik Labu Siam (Sechium edule) Menggunakan Ultrasonic-Assisted Extraction dan Response Surface Methodology Relyando, Syahfa Adinda; Ayu Wulandari; Ditta Kharisma Yolanda Putri; Bekti Palupi; Istiqomah Rahmawati
Journal of Biobased Chemicals Vol. 3 No. 1 (2023): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jobc.v3i1.276

Abstract

Labu siam (Sechium edule) merupakan tumbuhan dari famili Cucurbitaceae mengandung beberapa vitamin, seperti vitamin A, B dan C sehingga seringkali digunakan untuk mengobati penyakit. Berdasarkan analisis fitokimia ekstrak labu siam menunjukkan adanya senyawa bioaktif berupa fenolik. Senyawa fenolik merupakan metabolit sekunder dan dimanfaatkan sebagai bahan kosmetik dan obat-obatan karena mengurangi stress oksidatif. Penelitian ini bertujuan untuk mengetahui kandungan total fenolik dan aktivitas antioksidan ekstrak labu siam (Sechium edule) dengan metode spektrofotometri UV-Vis. Ekstrak labu siam diperoleh dengan metode Ultrasonic Assisted-Extraction (UAE) dengan pelarut etanol 96%. Variabel ekstraksi yang digunakan adalah waktu (15, 20, dan 25 menit), amplitudo (45, 65, dan 85 %), serta rasio pelarut (1:5, 1:10, dan 1:15). Penentuan kandungan total fenolik didasarkan pada metode Folin-Ciocalteau serta aktivitas antioksidan menggunakan DPPH. Penentuan parameter ekstraksi labu siam terhadap kandungan total fenolik ditentukan dengan metode Response Surface Methodology dengan tipe Box-Behnken. Kondisi optimal yang diperoleh untuk ekstraksi labu siam sebesar 1,327 mg GAE/gr sampel dan aktivitas antioksidan sebesar 29,45% pada kondisi waktu 20 menit, amplitudo 65%, dan rasio pelarut 1:10.
Transformasi Tempat Penampungan Sampah Konvensional Menjadi TPS3R di Desa Bungurasih Kabupaten Sidoarjo Agung, Tri Sunan; Relyando, Syahfa Adinda
Dampak Vol. 23 No. 1 (2026)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.23.1.25-37.2026

Abstract

The increasing volume of waste generation in Bungurasih Village, Sidoarjo Regency, has created an urgent need for adequate waste management facilities. The existing Temporary Waste Storage (TPS) is suboptimal, equipped only with four simple transport carts and an incinerator lacking an emission control system. This study aims to evaluate the current condition of the TPS, analyze waste composition, density, and generation rate, and redesign the facility into a Reduce, Reuse, Recycle Waste Processing Site (TPS3R). The research employed a literature review and qualitative descriptive approach, supported by primary data collection through eight consecutive days of sampling. The results indicate that the average waste density reaches 428.84 kg/m³, with a daily waste generation of 6,359.70 kg. The redesign includes the construction of a TPS3R on an area of 809 m², consisting of sorting zones, organic waste processing, composting, storage, and supporting facilities. The estimated total cost for the TPS3R construction is IDR 1,769,480,000. This result is expected to serve as a planning reference for community-based integrated waste management systems in rural areas.
Co-Authors Agung, Tri Sunan AYU WULANDARI Bekti Palupi Ditta Kharisma Yolanda Putri Istiqomah Rahmawati