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All Journal The Journal of Experimental Life Sciences (JELS) AL KAUNIYAH El-Hayah : Jurnal Biologi El-QUDWAH Prosiding Seminar Biologi Jurnal Biodjati Scripta Biologica Berkala Penelitian Hayati
Evika Sandi Savitri
UNIVERSITAS ISLAM NEGERI MAULANA MALIK IBRAHIM MALANG
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience

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Chemical Characterization of Silver Nanoparticle Compounds using Red Algae (Fucus vesiculosus) in Freeze Dry Methods Savitri, Evika Sandi; Shinta; Eko Budi Minarno; Rahmi Annisa
The Journal of Experimental Life Science Vol. 13 No. 1 (2023)
Publisher : Graduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2023.013.01.08

Abstract

The nanoparticle green synthesis method is an alternative method for synthesizing nanoparticles or nanomaterials. The nanoparticle green synthesis method is a synthesis method that forms metal nanoparticles using natural materials such as plants as bioreductor. Red algae contain active ingredients that are the potential as antioxidants and anti-aging. Fucus vesiculosus is one of the red algae species with bioactive as an anti-aging and antioxidant compound. This study aims to synthesize, characterize and determine the antioxidant activity of F. Vesiculosus nanoparticles compounds. Characterization for nanoparticle compounds is Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Particle Size Analyzer (PSA). The antioxidant activity test used the DPPH method. The results of the SEM characterization of nanoparticles showed the results of the formation of spherical particle surfaces known as a spherical formation. SEM-EDX shows several constituent elements of silver nanoparticles F. vesiculosus, namely C, O, Na, Mg, Cl, and K. Characterization silver nanoparticles using PSA measuring the particle size are 74.06 nm at 99.5% distribution. Characterization of silver nanoparticles using XRD showed crystalline character. The FTIR pattern shows the functional groups of alkenes, aromatic rings, ethers, amines/amides, alkenes, and alkanes. The antioxidant test results showed that the inhibition concentration for ascorbic acid was 1.13 ppm, silver nanoparticles F. vesiculosus 177.6 ppm, F. vesiculosus crude extract 1335 ppm, and respectively, ascorbic acid > silver NP > crude extract F. vesiculosus. The test results show that the antioxidant activity of the nanoparticle compounds increased from the very weak into the strong category.  Keywords: antioxidant activity, Fucus vesiculosus, Nanoparticle.
Growth and Flavonoid Content of Gynura procumbens (Lour) Merr. in Different Soil Water Content Savitri, Evika Sandi; Khusnia, Farrikhatun
Jurnal Biodjati Vol 4 No 2 (2019): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v4i2.4446

Abstract

Gynura procumbens contains tannins, saponins, steroids, triterpenoids, essential oils and flavonoids which have bioactivity as a medicine for various diseases. One effort to obtain the quality of medicinal plants uses management of soil water content. The opti-mum of soil water content will support optimal growth of a plant. Whereas in conditions of low soil water content resulted in the induc-tion of the production of secondary metabolites as a self-defense sys-tem. This study aimed to determine the effect of soil moisture content on the growth and total content of plant flavonoids G. procumbens. This study was carried out experimentally using a one-factor com-plete randomized design (CRD) consisting of 4 treatments with five replications. The treatment used is the difference in soil water content of 40%, 60%, 80% and 100% field capacity. The data obtained in the form of quantitative data will be analyzed by One Way ANOVA Test. Measurement of the content of total flavonoid compounds was car-ried out using UV-Vis spectrophotometer analysis. The results of the study indicate the influence of soil moisture level on the growth and total content of G. procumbens. Parameter growth of fresh weight, dry weight, and root G. procumbens showed an increase in 40% soil water content. The flavonoid content showed the highest total flavo-noid content 18.884 mg/g in the 40% field capacity soil water content 
Co-Authors AINIYATUL FIKRIYAH Eko Budi Minarno Estri Laras Arumingtyas Estri Laras Arumingtyas Farrikhatun Khusnia Kholifah Holil Khusnia, Farrikhatun Rahmi Annisa Retno Susilowati Ruri Siti Resmisari Shaddiqah Munawaroh Fauziah Shinta