cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Irwana Nainggolan
Contact Email
irwana@usu.ac.id
Phone
+6261-8214290
Journal Mail Official
jcnar@usu.ac.id
Editorial Address
Jalan Bioteknologi No. 1 Kampus USU Pd. Bulan, Medan 20155, Sumatera Utara - Indonesia
Location
Unknown,
Unknown
INDONESIA
JOURNAL OF CHEMICAL NATURAL RESOURCES (JCNaR)
Published by TALENTA PUBLISHER
ISSN : -     EISSN : 26561492     DOI : https://doi.org/10.32734/jcnar.v4i1.9353
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology
Journal of Chemical Natural Resources (JCNaR) is a peer-reviewed biannual journal (February and August) published by TALENTA as an open access journal. The aim of the journal is to provide a medium to exchange ideas and information related to research and knowledge in disciplines of organic chemistry, biochemistry, analytical chemistry, inorganic chemistry and physical chemistry. The journal also receives systematic reviews, meta- analysis and review article on the new issues in the fields of chemistry and natural sciences. Submission to this journal implies that the manuscript has not been published or under consideration to be published in another journal.
Arjuna Subject : Kimia(semua kategori) - Kimia Organik
Articles 132 Documents
 10   11   12   13   14 
Screening of Phytochemicals and Determination of Total Phenolic and Flavonoid Contents in Different Plant Parts of Kalanchoe ceratophylla Haw. Lenny, Sovia; Karo, Alyssa Zahra Br; Manalu, Lamhot Parulian; Astuti
Journal of Chemical Natural Resources Vol. 7 No. 2 (2025): Journal of Chemical Natural Resources (JCNaR)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v7i2.22964

Abstract

Kalanchoe ceratophylla Haw. is a medicinal plant traditionally used to address various health disorders. Its biological activities are believed to be associated with its secondary metabolites, particularly phenolics and flavonoids. Despite its traditional use, scientific information This study assesses the phytochemical composition alongside the total phenolic and flavonoid contents in the stem and leaf preparations of Kalanchoe ceratophylla Haw. Phytochemical screening confirmed the presence of alkaloids, flavonoids, tannins, and phenols in the stem extract, while the leaf extract also contained steroids. The total phenolic content was 7.43 mg GAE/100 g extract for stem and 7.11 mg GAE/100 g extract for leaves, whereas total flavonoids amounted to 0.324 mg QE/g extract (stem) and 1.621 mg QE/g extract (leaves). These findings highlight the potential use of K. ceratophylla, especially its leaves, for developing antioxidant-based herbal medicines.
Synthesis and Characterization of Amorphous Silica Nanoparticles Production from Indonesia Coal Fly Ash Chambioso, Yugo; Juwono, Ariadne Lakshmidevi; Daulay, Amru
Journal of Chemical Natural Resources Vol. 7 No. 2 (2025): Journal of Chemical Natural Resources (JCNaR)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v7i2.23383

Abstract

Coal fly ash an inexpensive waste material rich in silica, is reused as a renewable source and has attracted widespread attention. The sol-gel process was used to synthesize silica nanoparticles based on coal fly ash. Extraction of silica in the form of alkaline sodium silicate using alkali, followed by the formation of silica gel from the neutralization of alkaline sodium silicate with acid. The treated samples were calcined at 450 °C, 650 °C, and 850 °C. The chemical composition, morphology, phase, and silica functional groups of the as-synthesized silica nanoparticle powder were investigated using X-ray fluorescence (XRF), field emission scanning electron microscopy and Electron diffraction spectroscopy (FESEM-EDS), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Infrared (IR) spectral analysis showed that silica had hydrogen-bonded silanol and siloxane groups. The silica nanoparticles' purity was found to be as high as 97% in their amorphous state, with XRD analysis indicating this due to the broad peak observed in the 20-23° two-theta region, characterised by a spherical shape and a tendency to aggregate into clusters.

Page 14 of 14 | Total Record : 132

 10   11   12   13   14 

Filter by Year

2019 2025


Reset
Filter By Issues
All Issue Vol. 7 No. 2 (2025): Journal of Chemical Natural Resources (JCNaR) Vol. 7 No. 1 (2025): Journal of Chemical Natural Resources (JCNaR) Vol. 6 No. 2 (2024): Journal of Chemical Natural Resources Vol. 6 No. 1 (2024): Journal of Chemical Natural Resources Vol. 5 No. 2 (2023): Journal of Chemical Natural Resources Vol. 5 No. 1 (2023): Journal of Chemical Natural Resources Vol. 4 No. 2 (2022): Journal of Chemical Natural Resources Vol. 4 No. 1 (2022): Journal of Chemical Natural Resources Vol. 3 No. 2 (2021): Journal of Chemical Natural Resources Vol. 3 No. 1 (2021): Journal of Chemical Natural Resources Vol. 2 No. 2 (2020): Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources Vol. 1 No. 2 (2019): Journal of Chemical Natural Resources Vol. 1 No. 1 (2019): Journal of Chemical Natural Resources More Issue