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All Journal PROSIDING SEMINAR KIMIA Mimbar Agribisnis: Jurnal Pemikiran Masyarakat Ilmiah Berwawasan Agribisnis
Faujiah, Sifa
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Agriculture, Biological Sciences & Forestry Chemistry

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AKTIVITAS ANTIOKSIDAN KOMBINASI EKSTRAK ETANOL 70% DAUN MELINJO (Gnetum gnemon L.) DAN BUAH BELIMBING WULUH (Averrhoa bilimbi L.) Faujiah, Sifa; Sumiati, Triyani; Sulastri, Lilik
PROSIDING SEMINAR KIMIA Vol 2 No 2 (2024): Prosiding SNKT III 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Melinjo leaves (Gnetum gnemon L.) and Star Fruit (Averrhoa bilimbi L.) is a plant that can be used as traditional medicine. Melinjo leaves contain alkaloids, saponins, tannins, phenols, flavonoids, triterpenoids and steroids. Star fruit contains alkaloids, flavonoids and triterpenoids. These compounds function as antioxidants to counteract free radicals. The purpose of this study was to determine the secondary metabolites and determine the antioxidant activity of the combination of 70% ethanol extract of melinjo leaves and star fruit. The simplicia powder was extracted by maceration using 70% ethanol solvent, then a phytochemical test was carried out, after which the single antioxidant test and the combination of extracts were tested at a ratio of 1:3, 3:1, 1:1 with concentration series 5, 10, 20, 40, 80 ppm, the determination of antioxidants was carried out using DPPH (1,1-diphenyl-2-picrylhydrazyl) by measuring the absorbance of DPPH at a wavelength of 515 nm. The results of this study indicate that the value of IC50 for the ethanol extract of melinjo leaves was 7.86 μg/mL, the ethanol extract of star fruit was 33.70 μg/mL and the IC50 value from each combination of ethanol extract of melinjo leaves and star fruit at a ratio of 1:3 obtained 32.1 μg/mL, a ratio of 3:1 obtained 5.91 μg/mL and a ratio of 1:1 obtained 19.49 μg /mL. Based on the results of the study, it can be concluded that the antioxidant activity of the combination of 70% ethanol extract of melinjo leaves and star fruit in a ratio of 3:1 has an IC50 value the best was 5.91 μg/mL which was included in the very strong category. Keywords: Antioxidants, Melinjo Leaves, Star Fruit, Phytochemicals, DPPH
Analisis Sumber Risiko Produksi Pakcoy dengan Menggunakan House Of Risk (Studi Kasus Sintesa Farm Lembang, Kabupaten Bandung Barat) Faujiah, Sifa; Pardian, Pandi; Syamsiyah, Nur; Rasmikayati, Elly
Mimbar Agribisnis : Jurnal Pemikiran Masyarakat Ilmiah Berwawasan Agribisnis Vol 11, No 2 (2025): Juli 2025
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ma.v11i2.19449

Abstract

Sintesa Farm faces challenges in meeting the demand for pakcoy from distributors, as well as difficulties in maintaining product conformity to the specified standards. These problems are caused by various risks in production activities. This study aims to identify risk agent in pakcoy production at Sintesa Farm. This research uses a qualitative method with case study approach and the House of Risk (HoR) analysis. The results reveal that 12 out of 24 risk agent are classified as priority risk agent and contribute 80.9% to the overall identified risks. The risk source with the highest Aggregate Risk Potential value is attacked by root gall disease. The discrepancy in work procedures with the pakcoy production standard at Sintesa Farm was caused by the suboptimal implementation of the controlling function, which led to various risks caused by human resources.
Co-Authors Elly Rasmikayati Lilik Sulastri Nur Syamsiyah Pandi Pardian Sumiati, Triyani