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Current Research on Biosciences and Biotechnology
Published by Institut Teknologi Bandung
ISSN : -     EISSN : 26861623     DOI : https://doi.org/10.5614/crbb
Core Subject : Health, Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Materials Science & Nanotechnology Medicine & Pharmacology
The Current Research on Biosciences and Biotechnology (CRBB) encourages researchers to publish works related to the use of the biosciences and biotechnology in understanding the world around us. From Health and Medicine to Advanced Materials, these state-of-the-art research offer novel insights in a multidisciplinary environment. We encourage scientists to submit papers focusing on the following broad topics: Health and Medicine Pharmaceutical Sciences Pharmacology and Toxicology Food Microbiology and Biotechnology Biotechnology Agriculture Bio-Energy Marine Sciences Advanced Materials Environmental Sciences
Arjuna Subject : Umum - Umum
Articles 6 Documents
 1 
Search results for , issue "Vol. 3 No. 2 (2022)" : 6 Documents clear
Molecular docking-based virtual screening of antidiabetic agents from Songga (Strychnos lucida R.Br.): an Indonesian native plant Arif Setiawansyah; Muhammad Andre Reynaldi; Daryono Hadi Tjahjono; Sukrasno
Current Research on Bioscences and Biotechnology Vol. 3 No. 2 (2022)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/crbb.2022.3.2/82KYTCPW

Abstract

This study was carried out to predict the compounds derived from Songga that have potential as antidiabetic and predict their mechanism of action on various pathways of glucose regulation in diabetes mellitus by molecular docking. Molecular docking-based virtual screening was done by using AutoDock Vina software assisted by AutoDockTools. The test compounds used for virtual screening were obtained from literature studies and were combined with Lipinski’s rule to select the compounds for the prediction of lead candidates that can be used in oral administration. The receptors used in this study were human aldose reductase, human maltase-glucoamylase, PPAR-gamma, pancreatic beta-cell SUR1, and human DPP-IV. The validation of the molecular docking method of five target receptors showed that RMSD values of human aldose reductase, human maltase-glucoamylase, PPAR-gamma, pancreatic beta-cell SUR1, and human DPP-IV were 0.6446 Å, 1.8668 Å, 0.2527 Å, 1.7452 Å, and 1.7439 Å, respectively. From the molecular docking-based virtual screening, we discovered that for each target protein, there were one to three optimal compounds that have the best interaction in our investigation. Those compounds were chlorogenic acid on human aldose reductase, phyllamycin A, chlorogenic acid, and brucine N-oxide on human maltase-glucoamylase, phyllamycin A on PPAR-gamma, strychnine N-oxide on pancreatic beta-cell SUR1 and strychnine on human DPP-IV with binding affinity value of -9.9 kcal/mol, -7.6 kcal/mol, -9.9 kcal/mol, -8.8 kcal/mol, and -6.2 kcal/mol, respectively. Several compounds are predicted to have potential to be developed as antidiabetic agents. However, further laboratory investigations like in vitro and in vivo assays need to be conducted.
Ethnopharmacognosy study, antioxidant activity, and chemical content in chicken bile Slamet Tuty; Irda Fidrianny; Sukrasno
Current Research on Bioscences and Biotechnology Vol. 3 No. 2 (2022)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/crbb.2022.3.2/UFG27H3H

Abstract

The aim of this research was to study the ethnopharmacognosy, antioxidant activity, and chemical content of chicken bile. In addition, a bioactivity-guided isolation was also performed to identify compounds in chicken bile having antioxidant activity. Extraction was carried out by reflux method. Each extract was tested for its antioxidant activity using DPPH and CUPRAC methods. Fractionation was performed on selected extract, namely ethyl acetate extract, using vacuum liquid chromatography and subfraction using preparative TLC method and classical column chromatography (CCC). Compound 1 was characterized and identified by NMR, compound 2 was characterized and identified by LC-MS/MS and NMR, subfraction 7 was characterized by GC-MS. The result of the antioxidant activity of ethanol extract of chicken bile using the DPPH method (IC 50: 46.64 g/mL), ethyl acetate extract (IC 50: 69.99 g/mL), n-hexane extract (IC 50: 71.65 g/mL, fraction 15-17 (IC 50: 88.77 g/mL) showed strong antioxidant, whereas by CUPRAC method all extracts (EC 50: 69.90, EC 50: 80.28, EC 50: 70.40) and fraction (EC 50: 64.53) are strong antioxidants. The result of identification of compound 1 by NMR was identified as cholesterol, identification of compound 2 by LC-MS/MS was (E)-hexadecyl-ferulate and subfraction 7 which was identified by GC-MS produced dominant compounds, namely oleic acid, n-hexadecanoic acid, octadecanoic acid and palmitoleic acid. In conclusion, extract, fraction 15-17 and subfraction of chicken bile have antioxidant activity where the active antioxidant compound is a phenol group compound, namely (E)-hexadecyl-ferulate. The other chemical constituents found in chicken bile are, oleic acid, n-hexadecanoic acid, octadecanoic acid, and palmitoleic acid.
Investigation of tetracycline residues in poultry meat samples from Dhaka city by high-performance liquid chromatography Nargis Parvin; Mohammad Shoeb; Nilufar Nahar; Rafiza Islam
Current Research on Bioscences and Biotechnology Vol. 3 No. 2 (2022)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/crbb.2022.3.2/P89JJ95N

Abstract

The objective of the study was to quantify tetracycline (TCs) i.e., oxytetracycline (OTC), tetracycline (TC) and chlortetracycline (CTC) residues in thirty poultry meat samples (n = 30) collected from the local market and super shop around the Dhaka University campus during May 2019 to January 2020. Three samples were collected from each of ten locations. All samples were extracted by Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) method. Samples were analyzed by reversed-phase High-Performance Liquid Chromatograph equipped with Photo Diode Array Detector (LC-PDA) and a reported method was validated with good linear correlation coefficients of standards and matrix-matched calibration curves with r2=1.00, 0.99, 0.99 and r2= 0.99, 0.99,0.99 in the linearity range of 0-10 µg/kg for OTC, TC and CTC, respectively. The limit of detection (LOD) and limit of quantification (LOQ) for OTC, TC, and CTC were 1.05, 1.17, and 1.09 μg/kg and 3.15, 3.51 and 3.27 μg/kg, respectively. Accuracy that is expressed by the recovery percentages were calculated at two different concentrations (2.5 and 5 μg/kg) were 91 and 100%, 102 and 100%, and 106 and 100% for OTC, TC, and CTC, respectively. Intra-day (n=3) and inter-day (n=9, 3 days) precision data were under 10% for all sample matrixes. Standard deviations were calculated ±0.06, ±0.11 and ±0.03 and precision (expressed by RSD%) were found 5.57, 9.14 and 2.35%, respectively for OTC, TC and CTC. The HPLC-PDA method is affordable for screening of large number meat samples for residual antibiotics in biological matrices by any laboratories. The method is also cheaper in comparison with LC-MSMS. Analysis of real 30 poultry meat samples showed that the tetracyclines residues were below the quantification limit in all samples.
Determination of age-dependent endogenous indole-3 acetic acid (IAA) level in different organs of tomato plants Tasnim Ahmed; Rafiza Islam; Nargis Parvin; Mohammad Shoeb
Current Research on Bioscences and Biotechnology Vol. 3 No. 2 (2022)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/crbb.2022.3.2/WFP0HMM1

Abstract

Indole-3-acetic acid (IAA), a phytohormone, is a crucial modulator of plant growth and development. As increased levels of endogenous IAA is responsible for inhibitory effects on plants, knowing its concentration would be helpful for controlling exogenous IAA input. An optimum endogenous IAA level is required for proper growth and development of plant with good health status. Hence, in this study, we have detected and measured IAA present in tomato root, shoot, leaves and fruits at two different ages (25 days and 50 days) by Reversed-Phase High Performance Liquid Chromatography (RP-HPLC), a suitable chromatographic method for separating molecules based on hydrophobicity. We observed that the endogenous level of IAA was significantly higher in roots, shoots, leaves and fruits at 50-days old plant compared to 25-days old mature plant (p-value <0.01). These results suggested that the IAA level may increase with the increase of the age of tomato plants. The tomato plants showed good vigor with IAA range 0.3-3.0 µg/g.F.W (25 days) and 3.4-7.5 µg/g.F.W (50 days) of age, respectively, implying that IAA might be used as a possible plant health indicator. Further study is needed to manipulate the IAA concentration for adequate plant growth and development.
HPLC analysis of artificial preservatives, stimulants and sweeteners in carbonated beverages in Bangladesh Mohammad Shoeb; Md. Mafizul Islam; Md. Shahed Reza; Nilufar Nahar; Md. Mazharul Islam
Current Research on Bioscences and Biotechnology Vol. 3 No. 2 (2022)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/crbb.2022.3.2/2V2BWDB5

Abstract

Different (n=21) commercial carbonated beverages, available in Bangladesh, were analysed by HPLC coupled with a photodiode array detector (UV-PDA). The main objective of this study was to quantify the amount of different artificial sweeteners, stimulant and preservatives and to validate the two methods used in this purpose. The two methods are simultaneous determination of sodium benzoate, caffeine, and saccharin using the sodium acetate buffer with pH 3.0 at 254 nm and simultaneous determination of artificial sweeteners acesulfame-K and aspartame using the potassium phosphate monobasic buffer. Correlation coefficient (r2) obtained were 0.9977, 0.9976, 0.9975, 0.9993 and 0.9956 in the range of 1-100 µ/L, recoveries were 95.88-97.10, 96.53-97.20, 94.53-96.05, 91.15-93.31 and 92.88-94.13%, LODs were 30.06, 15.46, 31.61, 0.33 and 0.83 mg/L, and LOQs were 100.18, 51.54,105.37, 1.11 and 2.77 mg/L for saccharin, caffeine, sodium benzoate, acesulfame-K and aspartame, respectively. The present analysis shows that amount of saccharin, caffeine, sodium benzoate, acesulfame-K and aspartame in the range of ND-377.60, ND-462.36, ND-217.60, ND-48.09 and ND- 295.20 mg/L, respectively. The total carbohydrate found as 102.81-147.16 g/L using the UV-visible spectrophotometric method which implies that sample containing more amount of carbohydrate has less artificial sweeteners value.
Isolation of bioactive compounds with tyrosinase inhibitory activity from the methanol extract of meniran herb (Phyllanthus niruri Linn.) Syefira Salsabila; Rika Hartati; Laode M.R. Al Muqarrabun; Nurinanda Prisky Qomaladewi; Ariranur Haniffadli; Andi Rifki Rosandy; Agus Chahyadi; Elfahmi
Current Research on Bioscences and Biotechnology Vol. 3 No. 2 (2022)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/crbb.2022.3.2/GOO6ZULV

Abstract

Meniran (Phyllanthus niruri L.) is a wild plant in the Euphorbiaceae family which grows in tropical climates. The plant is known to possess antioxidant activity and is rich in phenolic compounds. Since plants with high phenolic content and high antioxidant activity are known to exhibit high tyrosinase inhibitory activity, the purpose of this study is to determine the inhibitory activity of the tyrosinase enzyme by the methanol extract of meniran (P. niruri L.) and to isolate secondary metabolites from the extract and fractions which exhibit inhibitory activity against tyrosinase. The in vitro tyrosinase inhibitory activity assay was conducted using the 96-well microplate method with kojic acid as the positive control, while the separation and purification of compounds were carried out using chromatography techniques. The methanol extract and n-hexane fraction showed tyrosinase inhibitory activity with IC50 of 11.05±0.16 and 2.57±0.08 mg/ml, respectively. Three bioactive compounds were succesfully isolated from the n-hexane fraction. Based on the UV and NMR spectra, compounds 1, 2, and 3 were identified as phyllanthin, phyltetralin, and hypophyllanthin, respectively. Furthermore, phyllanthin (1) was shown to demonstrate inhibitory activity against tyrosinase with IC50 of 0.6322 mM. In conclusion, both meniran extract and phyllanthin (1) were found to exhibit inhibitory acitivity against the tyrosinase enzyme. In the future they can be candidates for the treatment against hyperpigmentation and also as an active ingredient in skincare formulations.

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