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All Journal Pelita Masyarakat Jurnal Teknik Kimia USU
Renita Manurung
Universitas Sumatera Utara
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Public Health Social Sciences

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Pemanfaatan Hidrofobik Deep Eutectic Solvents dalam Penyisihan Dimetoat, Klorpirifos, dan Profenofos pada Buah Tomat dan Sayur Brokoli Axel Try Iddo Daely; Renita Manurung
Jurnal Teknik Kimia USU Vol. 9 No. 1 (2020): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (307.753 KB) | DOI: 10.32734/jtk.v9i1.3464

Abstract

Organophosphate insecticide is a type of pesticide that is commonly used, where this pesticide can be toxic to environmental organisms even to humans. Hydrophobic Deep Eutectic Solvent (DES) is a new generation nonpolar solvent of ionic liquids because it has better physical properties and chemical properties so that it can be used in the extraction process. DES was synthesized at 50 oC for 15 minutes with a stirring speed of 300 rpm and a molar ratio of Dl-menthol: lauric acid varied from 1: 1, 2: 1, and 3: 1. Pesticide removal is done by mixing 5 ml of DES with 200 ml of aquadest and then Tomatoes and Broccoli vegetables are washed with the solution. DES characteristics are done by analyzing the shape and measuring the freezing point, density and viscosity of DES. The concentration of pesticide residues was analyzed using Gas Chromatography-Mass Spectrometer (GC-MS). The highest elimination of pesticides obtained with DES hydrophobic which has a molar ratio of dl-menthol: lauric acid is 3: 1 where the highest elimination of pesticides in Tomatoe is 44.82% for Dimethoate pesticide, 84.1% for Chlorpyrifos pesticide, and 83.72% for Profenofos pesticide and Broccoli 35.19% for Dimetoat pesticide, 64.64% for Chlorpyrifos pesticide, and 55.28% for Profenofos pesticides.
Aplikasi Pelarut Eutektik K2CO3-Gliserol pada Ekstraksi Pigmen Antosianin dari Kulit Manggis (Garcinia mangostana Linn.) Hazima Asni; Renita Manurung; Dian Bonella
Jurnal Teknik Kimia USU Vol. 9 No. 2 (2020): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (266.79 KB) | DOI: 10.32734/jtk.v9i2.3562

Abstract

Mangosteen peel (Garcinia mangostana Linn.) contains 593 ppm of anthocyanin. Anthocyanin pigment from mangosteen peel (Garcinia Mangostana Linn.) can be used as an alternative to synthetic dyes. Eutectic solvents are the latest development in extraction technology to extract anthocyanin from its source. The solvent used is pottasium carbonate-glycerol based eutectic solvent. The purpose of this study was to determine the effect of eutectic solvents on the extraction of anthocyanin pigments from mangosteen peel. This research consists of 2 treatment factors namely rmolar ratio of K2CO3: glycerol of 1: 5, 1: 6, and 1: 7 and material: solvent ratio of 1: 4, 1: 6 and 1: 8. Anthocyanin content and color intensity were analyzed using a Spectrophotometer UV-Vis.  Extraction using K2CO3 : glycerol eutectic solvent at a ratio of 1: 7 and the ratio of material: solvent 1: 8 produced the best treatment with extract yield of 46%; anthocyanin content of 263.976 mg/L, and color intensity value of 0.173.
Tuasan Bentuk Kearifan Lokal Nelayan Tradisional Untuk Peningkatan Hasil Tangkapan Juga Pelestarian Biota Laut Zulkifli Zulkifli; Renita Manurung; Agustrisno Agustrisno
Pelita Masyarakat Vol. 4 No. 1 (2022): Pelita Masyarakat, September
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/pelitamasyarakat.v4i1.6954

Abstract

This public service aims to turn lokal wisdom into a guide, an attitude and behaviour in interacting with nature, as well as transforming lokal wisdom to efforts in sustaining marine life and increasing the catch of traditional fishermen. The steps to achieve these objectives are as follows: (a) conducting socialization of the Tuasan ((Fish Aggregating Device/FAD) as lokal wisdom and the medium of marine life preservation, through short videos screening, (b), holding a training on how to create FAD with the stakeholders of Bagan Kuala Village as facilitators. The output is an increase in the knowledge of traditional fishermen about lokal wisdom related to the fishing process. In addition, several FADs were handed over to the lokal fishermen of Bagan Kuala Village for communal use.Tuasan has become a guidance in the fishing process by some traditional fishermen for such a long time. Its materials consist of coconut fronds, bamboo, sand and rope; this lokal FAD is placed at the seabed as a playground and breeding location for fishes. In addition, tuasan is also used to mark the boundaries of fishing areas. Finally, tuasan as lokal wisdom of traditional fishermen needs to be preserved because it can increase the fish catching volume while it helps the preservation process of marine life
Co-Authors Agustrisno, Agustrisno Axel Try Iddo Daely Dian Bonella Hazima Asni Zulkifli Zulkifli