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Current Biochemistry
ISSN : 23557877     EISSN : 23557931     DOI : -
Core Subject : Science, Education,
Current Biochemistry (CB) publishes the results of original research that contribute significantly to the understanding of the chemical compound and reaction that occur within living organism. Preference will be accorded to manuscripts that develop new concepts or experimantal approaches, particularly in the advancing areas of biochemistry science. Manuscripts that are primarily theoretical in nature or in the field of bioinformatics must be directed toward explaining important results previously not understood, making important predictions that can be experimentally tested, or developing segnificant advances in theory of general interest to biochemists. Submission of manuscripts in emerging areas in biochemistry, chemical biology, biophysics, proteomics, model studies and structures, cellular and molecular biology, computational biochemistry, biotechnology, and new methods development is encouraged especially if they address basic biochemical mechanisms.
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Articles 5 Documents
Search results for , issue "Vol. 10 No. 1 (2023)" : 5 Documents clear
Phytochemical Screening, Total Flavonoids and Antioxidants of Kalanchoe Pinnata Linn. Leaves Qomaliyah, Eka Nurul; Indriani, Nurul; Rohma, Atika; Islamiyati, Ricka
Current Biochemistry Vol. 10 No. 1 (2023)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.10.1.1

Abstract

Kalanchoe pinnata Linn. or in Indonesia known as cocor bebek, this plants grow well in temperate and tropical regions. Cocor bebek is used to treat several diseases including skin diseases, wound healing, kidney stones, gallstones, diabetes. The pharmacological activities of cocor bebek leaves have been reported as anti-inflammatory, anti-oxidant and anti-microbial. The objective of this study is to determine the metabolite content of cocor bebek leaves, total flavonoid levels and antioxidant activity. Observations of secondary metabolites of cocor bebek leaves were carried out through qualitative secondary metabolite screening, while total flavonoid levels were carried out quantitatively UV-VIS with quercetin as a comparison, atioksidan activity through DPPH molecular inhibition testing. The results of this study indicate that cocor bebek leaves contain alkaloids, flavonoids, saponins, triterpenoids, tannins and phenols. 200gr of cocor bebek leaves obtained % yield extract is 14.63%. The total favonoid content obtained was 8.77% of quercetin, while the antioxidant inhibition of DPPH molecules obtained IC50 of 97.42 ppm.
Antibacterial Test of Endophytic Bacteria Isolated from Jawer Kotok (Coleus scutellarioides L. Benth) Against Bacillus cereus and Salmonella enteritidis Kusumawati, Dwi Endah; Bintang, Maria
Current Biochemistry Vol. 10 No. 1 (2023)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.10.1.2

Abstract

The use of synthetic antibiotics in small doses and long term against pathogenic bacteria can cause negative effects, such as resistance of pathogens and killing of good bacteria. We needs an innovation to substitute the use of synthetic antibiotics with natural antimicrobial compounds. Jawer kotok (Coleus scutellarioides L. Benth) has been used as medicinal plant and shown to be efficacious as antimicrobial because it contains flavonoids, tannins, alkaloids and saponins. Endophytic bacteria are symbiotic microorganisms that live in healthy plant tissue without harming to the host plant and may produce natural antimicrobial compounds which similar to the host plant. The aim of this study are to isolating endophytic bacteria from jawer kotok and screening their antibacterial activity against two pathogenic bacteria, namely Bacillus cereus and Salmonella enteritidis. A total of 22 bacterial isolates were obtained from C scutellarioides [L.] Benth. Based on antibacterial activity test, nine isolates shown antibacterial activity against B. cereus and S.enteritidis. BJ7 is the most potential isolate because it shown the biggest inhibition. It great possible that endophytic bacteria from jawer kotok may synthesize the same antimicrobial compounds like their host plant.
Stress Simulation Analysis on 316L Stainless Steel Bone Plate for Biomaterial Applications Ahmad Fikri; Agam Muarif; Rizka Mulyawan; Nursakinah
Current Biochemistry Vol. 10 No. 1 (2023)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.10.1.3

Abstract

Biomaterial adalah material yang digunakan untuk mengganti struktur biologis yang hilang atau sakit. Material ini harus dapat diterima oleh tubuh. Salah satu biomaterial yang paling banyak digunakan untuk aplikasi bone plate adalah stainless steel 316L. Saat diaplikasikan pada tubuh pasien, material ini akan mendapatkan beban sejajar permukaan. Beban ini merupakan beban yang cukup dominan diterima oleh bone plate stainless steel 316L. Beban yang diterima bone plate stainless steel 316L akan berubah dan bervariasi. Sehingga perlu dilakukan simulasi tegangan degan memberikan gaya tekan pada bone plate stainless steel 316L. Simulasi tegangan dilakukan dengan menggambar dan menganalisis tegangan dengan menggunakan Autodesk Fusion 360. Selanjutnya material tersebut diberikan beban berupa static load mulai dari 150 N sampai 2300 N. Hasil analisis tegangan menunjukkan distribusi tegangan terdapat ditengah dan ujung bone plate. Regangan dan perubahan bentuk menunjukkan peningkatan seiring dengan kenaikan nilai tegangan. Gaya tekan 150 N sampai 600 N merupakan beban yang aman karena masih dibawah titik luluh 170 MPa. Gaya tekan 700 N sampai 2300 N merupakan beban yang tidak aman karena sudah melebihi titik luluhnya. Hal ini akan menyebabkan material mengalami deformasi plastis dan patah.
Molecular docking: Bioactive compounds of Mimosa pudica as an inhibitor of Candida albicans Sap 3 Gholam, Gusnia Meilin; Firdausy, Iman Akhyar; Artika, I Made; Abdillah, Ramadhani Malik; Firmansyah, Ridwan Putra; Irsal, Riyan Alifbi Putera; Zahra, Hafizh
Current Biochemistry Vol. 10 No. 1 (2023)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.10.1.4

Abstract

Candida albicans (C. albicans) is a commensal microbiota that resides in humans. However, in certain cases, C. albicans can infect and cause several diseases to humans. This study aimed to investigate the interaction between Mimosa pudica bioactive compounds and C. albicans Sap 3. Molecular docking analysis was carried out using YASARA structure. The procedures involved preparation of ligands and target receptor, molecular docking, data analysis and visualization. All 3D ligands were downloaded from PubChem NCBI, while target receptor was downloaded from RCSB PDB. The interaction between Mimosa pudica bioactive compounds against Sap 3 resulted in a binding energies ranges from 5,168 – 7,480 kcal/mol and most of the interactions formed were relatively strong. Furthermore, the test ligands had contact with the catalytic residues and substrate binding site pockets S1/S2/S3/S4 on the target receptor. Bioactive compounds of Mimosa pudica have relatively good interactions in inhibiting C. albicans Sap 3
In Vitro Analysis of Gradual Water Extract of Red Betel Leaf (Piper crocatum) as Free Radical Scavenging and Inhibitor of α-Glucosidase Safithri, Mega; Fibri Yuniasih, Tiara; Syaefudin
Current Biochemistry Vol. 10 No. 1 (2023)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.10.1.5

Abstract

Red betel (Piper crocatum) has antihyperglycemic activity for diabetic treatment. The purpose of this study was to investigate the activity of DPPH free radical scavenging, the α-glucosidase inhibitory activity, and total phenolics of the aqueous extract of P. crocatum (1st extract, 1st extract residue, and 2nd extract residue). The infundation method was used with spectrophotometric test techniques. The red betel leaves extract in all extracts and extract residues had a small of α-glucosidase inhibition activity ranging from 0.76% - 1.43%. Meanwhile, the antioxidant activity of DPPH and total phenolic levels showed significantly different results (p<0.05) in the 1st extract, 1st extract residue, and 2nd extract residue. The highest antioxidant capacity and total phenolic content were found in the first extract, it were 59.64 ± 0.18 mg AAE/g extract and 55.50 ± 0.14 mg GAE/g, respectively. Gradual extraction reduced DPPH free radical scavenging activity, α-glucosidase inhibition activity and phenolic total content.

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