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Current Biochemistry
Published by Institut Pertanian Bogor
ISSN : 23557877     EISSN : 23557931     DOI : -
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology 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 115 Documents
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Antioxidant Activity, Inhibition α-Glucosidase of Cymbopogon nardus (L.) Rendle and Identification of Active Compounds Najmah Najmah; Hasim Hasim; Didah Nur Faridah
Current Biochemistry Vol. 8 No. 1 (2021)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.8.1.3

Abstract

Diabetes mellitus (DM) has become a health problem in various countries, even in Indonesia, multiple of Covid-19 sufferers have DM as comorbid. Treatment of DM can be conducted by delaying glucose intake performed by the α-glucosidase enzyme in the intestine. Treatment using synthetic drugs often causes side effects. Instead to overcome these problems, herbal medicine is a choice. Cymbopogon nardus (L.) Rendle served as a potential candidate as seen from prior research but related to DM drugs, further exploration needs to be performed. This study aims to acquire a DM medicine by using Cymbopogon nardus (L.) Rendle . The leaves were macerated using 96% concentration of ethanol followed by multilevel fractionation with n-hexane, water and ethyl acetate as solvents. The test results showed that the n-hexane fraction was the best for antioxidant activity and α -glucosidase inhibition with IC50 values of 8,23 ppm and 311,87 ppm while the identification of the compound by using Liquid Chromatograph-Mass Spectrometry (LC-MS/MS) suspected compounds that have a role were ar-turmerone, beesioside N and notohamosin A. Based on the test, the n-hexane fraction was found as a source of antioxidants as well as α -glucosidase inhibitors. Keywords: Antioxidant, α -glucosidase, Cymbopogon nardus (L.) Rendle, LC-MS/MS.
Antioxidant Activities and α-glucosidase Inhibition of Gayo Arabica Coffee Skin (Coffea arabica L) Baharuddin Yusuf Habiby Harahap; Hasim Hasim; Didah Nur Faridah
Current Biochemistry Vol. 8 No. 1 (2021)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.8.1.4

Abstract

This research objectives to determine antioxidant activities and inhibition of α-glucosidase 96 % ethanol extract of gayo arabica coffee skin, n-hexane fraction, ethyl acetate fraction, and water fraction. Gayo arabica coffee skin was extracted by ethanol using maceration and fractionation using n-hexane, ethyl acetate, and water. Quercetin and Gallic acid were used as standard to found total flavonoids and phenolics. Test of antioxidant activity using the DPPH method. After being tested the inhibition of the α-glucosidase IC50 ethanol extract, the n-hexane fraction, ethyl acetate fraction, and water fractions. The total flavonoids of 96% ethanol extract, n-hexane fraction, ethyl acetate, and water fraction respectively are 76.74, 99.07, 73.55, 50.24 mg QE/g extract . Total phenolics of 96% ethanol extract, n-hexane fraction, ethyl acetate, and water fraction respectively are respectively 211.85, 136.67, 145.19, 127.41 mg GAE/ g extract. Antioxidants activity of ethanol extract, n-hexane fraction, ethyl acetate fraction, and water fraction are IC50 12.03 ppm, 36.08 ppm, 30.27 ppm, 11.62 ppm. Inhibition activity α-glucosidase enzyme respectively are 588.85 ppm, 341.81 ppm, 591.61 ppm, and 798.78 ppm. These showed that the ethanol extract and water fraction are the best in antioxidants and the ethanol extract and ethyl acetate fraction are the best in inhibiting the α-glucosidase enzyme. These results indicate that gayo arabica coffee skin extract has the potential to be developed as an antidiabetic compound. Keywords: Antidiabetic, Antioxidant, flavonoids, phenolics, α-glucosidase
Potency of Bioactive Compounds in Indramayu Mango Peel Waste to Inhibit ACE2 Mustika Luthfia; Assifah Eryandini; Deki Geraldi; Chelsy Narita; Choirunnisa Miftahul Jannah; Laksmi Ambarsari
Current Biochemistry Vol. 8 No. 2 (2021)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.8.2.1

Abstract

According to reports, mango peel contains bioactive compounds—especially phenolic—threefold higher than the flesh. This issue underlies the research that aims to identify bioactive compounds from Indramayu mango peel which have the potential as ACE2 inhibitors. The study was initiated by extracting mango peel simplicia using aquadest, then carried out with phytochemical screening, and identification of compound content by LC-MS. The extraction obtained 21.3% of yield. The results of phytochemical screening showed that secondary metabolites in the form of alkaloids, flavonoids, saponins, and tannins were identified in the mango peel. At the same time, the LC-MS fragmentation results obtained 40 compounds based on the largest sample area. The result from fragmentation were tested for Lipinski bioavailability prediction and ADMET test and obtained 10 potential compounds. Molecular docking was performed on the ACE2 receptor with 10 sample ligands and 1 comparison ligand using YASARA Structure. All of the sample ligands (from Lipinski and ADMET test) showed higher free energies than comparison ligand, chloroquine. Mangiferin is a typical mango compound identified in LC-MS, had inhibitor activity against ACE2. Two-dimensional visualization using Discovery Studio showed mangiferin interaction with the receptor via hydrogen bond, hydrogen carbon bond and phi-anion interactions at three amino acid residues (Thr371, Glu375, Glu402) on the active site of ACE2. Keywords: ACE2, bioactive compound, mango peel, mangiferin, waste
Analysis of Metabolite Compound Profiles of Miana Leaves Endophytic Bacteria (Coleus scutellariodes) using GC-MS Dwi Endah Kusumawati; Ukhradiya Magharaniq Safira Purwanto; Maria Bintang; Fachriyan Hasmi Pasaribu
Current Biochemistry Vol. 8 No. 2 (2021)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.8.2.2

Abstract

Exploration of bioactive compounds from endophytic bacteria as novel source of antibacterial need to be explored, as an alternative to substitute synthetic antibiotics. Based on previous studies, DM6 was a potential isolate that showed antibacterial activity. The isolate has been identified as Brevibacillus sp. based on 16S rRNA analysis. This study aimed to identify antibacterial compounds produced by DM6 isolate using GC-MS. The GC-MS results showed that the chloroform extract of DM6 isolate contained : 1-Octadecene (CAS).alpha.-Octadecene, Hexanedioic acid, dioctyl ester (CAS) Dioctyl adipate, Phenol, 3,5-bis(1,1-dimethylethyl)- (CAS) 3,5-Di-tert-butylphenol, and 1,4-diaza-2,5-dioxobicyclo[4.3.0]nonane. Adipic acid/hexanedioic acid and phenols are also known to contained in the leaves of Coleus scutellariodes. This indicated that endophytic bacteria were able to synthesize antibacterial compounds which similar with the host plant.
The Inhibitory Activity and Kinetics of α-Glucosidase by Toona sinensis Stem Bark Extracts Melati Devina Gustini Wirastuti; Syamsul Falah; Syaefudin
Current Biochemistry Vol. 9 No. 1 (2022)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.9.1.2

Abstract

Research on the potential of the Surian tree (Toona sinensis) for medicine has been carried out, especially for the leaves. However, the bark section has not been done much. This study aimed to determine the inhibitory activity of -glucosidase and IC50 extract as well as the fraction of surian bark as antidiabetic in vitro. The reflux method with water at 90oC and maceration using 70% ethanol at room temperature was carried out to obtain aqueous and ethanol extracts. Furthermore, the ethanol extract was fractionated successively using n-hexane, diethyl ether, and ethyl acetate. Phytochemical screening test showed that the aqueous extract contained flavonoids, saponins, and tannins. Meanwhile, the 70% ethanol extract and its fraction showed terpenoid content, in addition to flavonoid compounds, saponins, and tannins. The best -glucosidase inhibition was shown by 70% ethanol extract, which was 70.45 ppm followed by ethyl acetate fraction, n-hexane fraction, diethyl ether fraction, and water extract of surian bark with values of 81.96 g/mL, 98.76 g/mL, respectively. , 140.25 g/mL, and 242.85 g/mL. Kinetics of -glucosidase inhibition showed that 70% ethanol extract of surian bark inhibited through a non-competitive inhibition mechanism, characterized by a decrease in Vmax from 8.29x10-3 mM/min to 1.65x10-3 mM/min and a decrease in Km from 0.17 mM to 0.03 mM.
Antioxidant Activity of Telang (Clitoria ternatea L.) Extract in Inhibiting Lipid Peroxidation Ukhradiya Magharaniq Safira Purwanto; Kamaratih Aprilia; Sulistiyani
Current Biochemistry Vol. 9 No. 1 (2022)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.9.1.3

Abstract

Butterfly pea (Clitoria ternatea L.) has been widely used as a healthy drink as well as traditional medicine. This study aimed to test the antioxidant activity of C. ternatea aqueous extract based on its ability to inhibit lipid peroxidation (in vitro) using different parts and extraction methods. Extraction was carried out on flowers, leaves, and roots. The leaves and roots were extracted by boiling technique. Flowers were extracted in 3 ways: boiling, maceration, and brewing. Antioxidant activity was determined based on phenolic content, flavonoid content, and antioxidant test using the TBA method. The highest phenolic and flavonoid levels were shown by the aqueous extract of C. ternatea leave of 57.51 mg GAE/g and 1.50 mg EK/g, respectively. The highest levels of flavonoid were from flower parts treated with boiling technique (0.88 mg EK/g), followed by brewed flowers and macerated flowers. The highest antioxidant activity was obtained from flowers that were boiled for 30 minutes with a percentage inhibition of 94%. Based on the method of extraction and part of the plant, all extracts of C. ternatea have similar antioxidant potential.
Antibacterial Activity of Ethanol Extract of Red Betel Leaves (Piper crocatum) and Its Fractions against Escherichia coli pBR322 Fernanda Chairunisa; Mega Safithri; Maria Bintang
Current Biochemistry Vol. 9 No. 1 (2022)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.9.1.1

Abstract

Red betel leaf (Piper crocatum) is one of the typical Indonesian herbal plants that has an antibacterial function. This study aimed to test and measure the activity of 70% ethanol extract of red betel leaf and its fractions (n-hexane, ethyl acetate, and water fractions) as antibacterial against specific bacteria Escherichia coli pBR322 based on activity and minimum inhibitory concentration. Extraction was carried out using the maceration method and continued with fractionation based on the level of solvent polarity. Antibacterial activity was indicated by the presence of inhibition zones. The minimum inhibitory concentration was indicated by the appearance of the inhibition zone at the minimum concentration. Results showed that extraction process resulted in crude extract yield of 19.49%. The best antibacterial activity was shown by 1000 ppm n-hexane fraction with an inhibition zone of 2.40 mm ± 0.14. The best minimum inhibitory concentration was 100 ppm n-hexane fraction with an inhibition zone of 0.60 mm ± 0.56.
Hepatoprotective Activity of Propolis Trigona spp., Hibiscus sabdariffa, and Myrmeleon sp. in Rats Induced by Paracetamol Akhmad Endang Zainal Hasan; Agus Setiyono; Miko Afrian
Current Biochemistry Vol. 9 No. 1 (2022)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.9.1.4

Abstract

Negative effects on health will occur in excessive use of paracetamol. The main objective of this study was to determine the hepatoprotective activity of Propolis Trigona spp., Hibiscus sabdariffa, and Myrmeleon sp. in rats induced by paracetamol. The study was conducted on 36 Sprague Dawley rats with 6 rats in each group. Group 1 (normal control), group 2 (positive control, temulawak 42.86 mg/kg BW), group 3 (negative control), group 4 (infusion of Myrmeleon 10 mg/kg BW), group 5 (propolis extract 0.02 ml/kg BW), and group 6 (Hibiscus sabdariffa infusion 0.02 ml/kg BW). Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) concentrations were determined spectrophotometrically and microscopically for liver histopathology. The results showed that during three weeks of treatment with Propolis Trigona spp., Hibiscus sabdariffa, and Myrmeleon sp. in rats, this treatment could decrease ALT and AST activity as the positive control. The ALT activity values ​​of the three materials were 69.26, 51.00, 51.00, 43.67, U/I with AST values ​​of 110.29, 97.33, 91.00, 91.33 U/I. Based on Duncan's test, there were significant differences between all treatments with negative and positive control groups. Likewise, with the histopathological scoring results, the negative control was found to be significantly different from all treatments. Therefore, treatment with propolis Trigona spp., Hibiscus sabdariffa, and Myrmeleon sp. may have hepatoprotective benefit.
A Brief Overview and History of Human Nutrition and Health Ahsan, Haseeb
Current Biochemistry Vol. 9 No. 2 (2022)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.9.2.5

Abstract

Nutritional biochemistry is finally getting the attention it deserves, despite the fact that food and nutrition have been studied for centuries. In 1926, less than 100 years ago, the first vitamin was extracted and chemically characterized, leading to studies on single-nutrient deficiency diseases. Nutritional research on chronic diseases like cardiovascular disease, diabetes, obesity, and malignancies has hastened in the past few decades, especially after the year 2000. Nutrition has played a key role in the improvement of public health since the past 200 years, and is expected to play a major role in public health for the future. Keywords: nutrition, diet, history, food, agriculture.
In Silico Analysis of Red Betel (Piper crocatum) Active Compounds as Xanthine Oxidase Inhibitors Safithri, Mega; Miantika, Shafillah; Ambarsari, Laksmi
Current Biochemistry Vol. 9 No. 2 (2022)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.9.2.1

Abstract

Asam urat jika diproduksi secara berlebih oleh tubuh dapat mengakibatkan pembengkakan, rasa nyeri dan kaku dipersendian. Pembentukkan asam urat di tubuh dapat dihambat dengan cara menginhibisi kerja enzim xantin oksidase. Penelitian ini bertujuan mengidentifikasi senyawa aktif sirih merah yang dapat menginhibisi aktivitas enzim xantin oksidase melalui penambatan molekuler (in silico). Metode in silico yang dilakukan yaitu penambatan terarah (site directed docking) dengan menggunakan AutoDock Tools 1.5.6. Ukuran pusat penambatan molekuler sebesar x=26,7853; y= 9,9800; z= 113,3917 dengan nilai dimensi x=14 ; y=14 ; z=18. Senyawa aktif sirih merah terpilih adalah asam protokatekuat, sofalkon, dan 2-(3,4-dimetoksi fenil)-6-etoksi-7- metoksi-1-naftol karena mempunyai nilai ∆G dan Ki yang lebih kecil dibanding allopurinol. Selain itu, senyawa-senyawa aktif tersebut memiliki interaksi residu asam amino yang kuat terhadap sisi aktif xantin oksidase.

Page 9 of 12 | Total Record : 115

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