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All Journal Jurnal Ilmu Pertanian Indonesia KOVALEN: Jurnal Riset Kimia Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian
Farida Laila
Department Of Food Science And Technology, Faculty Of Agricultural Technology, IPB University, IPB Darmaga Campus, Bogor 16680 And School Of Vocational Studies, IPB University, Jl. Kumbang No 14, Bogor 16151
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Social Sciences Veterinary

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Phytochemical Contents of Torbangun (Coleus amboinicus Lour) from Fractionation of Pressurized Liquid Extraction Farida Laila; Dedi Fardiaz; Nancy Dewi Yuliana; Muhammad Rizal Martua Damanik; Fitriya Nur Anissa Dewi
Jurnal Ilmu Pertanian Indonesia Vol. 25 No. 2 (2020): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (453.286 KB) | DOI: 10.18343/jipi.25.2.224

Abstract

Coleus amboinicus (Lour) (torbangun) has been used traditionally as a breast milk stimulant, flavoring agent in many cuisines, and reported to possess many pharmacological values. The aim of this study was to explore the utility of the Pressurized Liquid Extraction (PLE) technique to identify the phytochemical contents of torbangun. In this study, total phenolic content and flavonoid in torbangun were determined using spectrophotometric method. The GC-MS analysis was used to identify the chemical constituents of torbangun, which was sequentially extracted with a wide range of solvent or solvent mixture from nonpolar-moderately polar and finally polar solvent. Total phenolic and flavonoid contents in the methanol extract of torbangun were 42.17±2.96 mg GAE/g and 11.20±0.58 mg QE/g, respectively. The identified chemical constituents in torbangun were sugar, hydrocarbon, ketone, terpenes, phenolics, fatty acid, fatty alcohol, steroids, alkaloids, and others, whereas the dominant constituents were phenolic compound, alkane, and sugar. In conclusion, this study demonstrated the effectiveness and rapid extraction of the PLE technique. Many valuable compounds in torbangun were extracted using gradual composition of solvent and were able to identify certain compounds in different polarities of solvents that are important in functional food preparation, pharmaceutical, and metabolomics research. Keywords: bioactive, extract, nontoxic, plant, solvent
SINTESIS DAN KARAKTERISASI SUPERABSORBEN DARI SELULOSA JERAMI PADI (Superabsorbent Synthesis and Characterization of Rice Straw Cellulose) Wina Yulianti; Farida Laila
Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Vol. 4 No. 1 (2014): Jurnal Sains Terapan, Volume 4, Nomor 1, Tahun 2014
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (587.451 KB) | DOI: 10.29244/jstsv.4.1.46-52

Abstract

Copolymerization of cellulose from rice straw with acrylic acid and acrylamide produce biopolymer superabsorbent. Cellulose was purified from fat content by extraction with toluene:ethanol (2:1). Hemicelluloses and lignin were removal by using potassium hydroxide 5% and hydrogen peroxide 2% at alkaline pH. Cellulose yield obtained was 21.56%. FTIR spectra of lignin showed a loss of absorption at 1728 cm-1. Copolymerization was carried out at 65 C under nitrogen athmosphere. Initiator and cross linking agent used were potassium peroxodisulfate and N'N-methylene bis acrylamide. Superbasorben resulted from this experiment showed the water swelling capacity after 24 hour for the water, solution of 100 ppm of ammonium chloride, and urea respectively 387,11 g/g ; 193,47 g/g and 400,17 g/g.Keywords : superabsorbent, rice straw, swelling capacity
Evaluasi Kadar Senyawa Fenolat, Flavonoid Total, serta Aktivitas Antioksidan Secara in vitro dalam Ekstrak Metanol Bawang Dayak (Eleutherine palmifolia (L.) Merr : Evaluation of Phenolic Compounds, Total Flavonoid Content and in vitro Antioxidant Activity of Methanol Extract of Dayak Onion Bulbs (Eleutherine palmifolia (L.) Merr Farida Laila; Ika Resmeliana; Wina Yulianti; Atep Dian Supardan
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 3 (2022): December Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2022.v8.i3.16175

Abstract

Dayak onion bulbs are a plant originating from Kalimantan which has been used for generations to treat various diseases. This plant is quite easy to grow and develop in many places in Indonesia. The aims of the present study were to evaluate the antioxidant potential of the methanol extract of Dayak onion bulbs based on the total of the phenolic and flavonoids contents and also the antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging ability, ferric reducing power and total antioxidant capacity. The results showed the total phenolic and flavonoid methanol extract of Dayak onion bulbs were 14.49 ± 1.42 mg GAE/g dry weight and 5.41 ± 1.01 mg QE/g dry weight, respectively. Antioxidant activity as measured by the DPPH, total antioxidant capacity, and ferric reduction assay with IC50 values of 16.95 ± 1.58 μg/mL, 24.22 ± 2.51 µg/mL, and 85.40 ± 16.88 µg/mL, respectively. These results suggest that the methanol extract of Dayak onion bulbs has potential bioactive compounds with good antioxidant activity and can be developed as an effective and safe source of natural compounds for functional food or herbal medicine.
Co-Authors Atep Dian Supardan Dedi Fardiaz Dewi, Fitriya Nur Annisa Ika Resmeliana Nancy Dewi Yuliana Wina Yulianti