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Journal Of Carbazon
Published by Universitas Syiah Kuala
ISSN : 29885744     EISSN : 29885744     DOI : 10.24815/jocarbazon
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology
Journal of Carbazon is a journal published by Chemistry Department, Faculty of Science and Mathematics, USK Banda Aceh. The journal aims to disseminate cutting-edge research in all areas of chemistry both theoretical and experimental studies. Journal of Carbazon provides readers with original research articles and reviews. We welcome articles coming from Indonesia and overseas, capturing the rapid development of chemistry, including: Theoretical and computation chemistry Environmental chemistry Material, composite and polymer chemistry Organic synthesis and natural product chemistry Inorganic Chemistry Food and medical chemistry Biochemistry Analytical chemistry The author is solely responsible for the content of published articles and understood that submitted work is based on original results which has not been published previously. All accepted articles are reviewed by a team of experts.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 1, No 1 (2023): June 2023" : 5 Documents clear
Polyurethane Membranes From Red Seaweeds For Ammonia Adsorption Kamila, Nurul; Marlina, Marlina; Mustafa, Irfan; Nurman, Salfauqi; Saiful, Saiful
Journal of Carbazon Vol 1, No 1 (2023): June 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jokarbazon.v1i1.32874

Abstract

Polyurethane (PU) membranes were prepared from red seaweed (Gracilaria sp.), castor oil, Toluene Diisocyanate (TDI), and added benzoyl peroxide (BPO) additive to improve membrane performance. The membrane is applied for the adsorption of ammonia in the solution. FT-IR analysis showed the presence of functional group N = C = O at a wavenumber of 2276 cm-1 and the O-H functional group at a wave number of 3373.50 cm-1, indicating the urethane group's formation has been formed during membrane polymerization. SEM images showed the morphological structure of the PU membrane, where the more open structure of the PU membrane by the addition of BPO. The DSC and TGA results showed the membrane's thermal stability with the addition of BPO. The PU membrane has an optimum contact time for ammonia uptake of 40 minutes. The adsorption isotherm of ammonia by the PU membrane follows the Freundlich isotherm model. The adsorption capacity of the PU membrane with the addition of BPO additives was 13.2 mg/g, which shows that the adsorption capacity of the PU-BPO membrane has a better performance than a membrane without the addition of the BPO. The PU-BPO membrane could be used as an alternative method of ammonia removal.
Uncovering the Endogenous Bacteria Involved in the Synthesis of Formaldehyde in Tiger Grouper Fish (Epinephelus fuscoguttaus) Sufriadi, Elly; Helwati, Hira; Nurfahmi, Nurfahmi
Journal of Carbazon Vol 1, No 1 (2023): June 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jokarbazon.v1i1.32844

Abstract

This study aimed to isolate and identify specific bacteria responsible for the conversion of trimethylamine oxide (TMAO) into formaldehyde in tiger grouper (Epinephelus fuscoguttatus). The gastrointestinal tract of tiger grouper specimens was sampled, and bacterial colonies were isolated using nutrient agar (NA) and screened on TMAO media. Bacterial isolates capable of producing formaldehyde were identified. The implications of these findings extend to food safety, scientific research, medical diagnostics, and industrial applications. Further investigation is needed to elucidate the enzymatic pathways and genetic factors associated with formaldehyde production in these bacteria. Evaluation of the antibacterial compound production capability revealed inhibitory zones against Escherichia coli, indicating the potential for bactericidal properties. Gram staining and scanning electron microscopy (SEM) were employed to characterize the formaldehyde-producing bacteria, revealing their gram-positive nature and rod-shaped morphology. This study provides insights into the role of specific bacteria in formaldehyde production, paving the way for future research and applications in various fields.
Garlic Mixed Olive Oil Cream Formulation and Its Activity Against A Clinical Isolate of Staphylococcus aureus Khairan, Khairan; Zahraty, Ifrah; Idroes, Rinaldi
Journal of Carbazon Vol 1, No 1 (2023): June 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jokarbazon.v1i1.32825

Abstract

Garlic or Allium sativum is known containing of organosulphur compounds. These compounds are known have potential as antimicrobial, antivirus, and anticancer. The purpose of this study is to determine the activity of garlic mixed olive oil (GMO2) cream against the clinical isolate of Staphylococcus aureus and its evaluation by observing the organoleptic, homogeneity, pH, spread ability, stickiness, and viscosity. The result showed that GMO2 was able to inhibit the growth of Staphylococcus aureus bacteria at concentrations of 25 and 50 mg/ml. Meanwhile, the formulation of GMO2 cream at concentration 25 mg/ml was done by poisoned food method showed no activity against clinical isolate of Staphylococcus aureus. In this study, vanishing cream was used as negative control. The evaluation of GMO2 cream at concentration of 25 mg/mL has stability in organoleptic and homogeneity after the cycling test. The pH value of GMO2 cream was approximately equal to vanishing cream. The results of spread ability and stickiness tests indicated that GMO2 cream had the spreading and sticking strength which satisfied with the standard cream in range 5-7 and 4 respectively. The viscosity value of GMO2 cream were decreased after the cycling test. The stability test result showed that of GMO2 cream was stable after the cycling test.
The Effect of Antioxidants of -Tocopherol on the Characteristic of Mechanical, Thermal, and Morphology Properties of Polypropylene-Montmorillonite (PP-MMT) Nanocomposites Julinawati, Julinawati; Rahmi, Rahmi; MZ., Kartika; Mustafa, Irfan; Suryati, Suryati
Journal of Carbazon Vol 1, No 1 (2023): June 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jokarbazon.v1i1.32812

Abstract

The purpose of this study was to determine the effect of -tocopherol on the mechanical, thermal, and morphological properties of polypropylene-montmorillonite (PP-MMT) nanocomposites. The preparation of polypropylene-montmorillonite (PP-MMT-AO) nanocomposites was carried out on PP compositions; PP-g-MA; MMT-octadecyl amine; AO is 80;10;10;5 and the PP-MMT nanocomposite composition is PP; PP-g-MA; MMT-Octadecyl amine: 80;10;10. The SEM results showed that polypropylene, MMT, and the antioxidant -tocopherol could be exfoliated and intercalated to produce compatible nanocomposites. The mechanical and thermal test results showed that the PP-MMT-AO nanocomposite had higher mechanical properties and thermal stability than the PP-MMT nanocomposite. Based on the FTIR test and degradation test on PP-MMT and PP-MMT-AO films which were carried out for up to 15 days and 30 days showed that the PP-MMT-AO nanocomposite against UV light was given, this shows that -Tocopherol can prevent oxidation reactions polypropylene.
Isolation and Screening of Endophytic Fungi from Soursop (Annona muricata L.) Leaves: Potential Sources of Antimicrobial Compounds Nurhaida, Nurhaida; Murniana, Murniana; Amrina, Bella Septie; Rasyid, Syarifah AB
Journal of Carbazon Vol 1, No 1 (2023): June 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jokarbazon.v1i1.32733

Abstract

Endophytic fungi, which reside within plant tissues, offer a unique ecological perspective due to their mutually beneficial relationship with host plants. Soursop (Annona muricata L.) leaves, known for their medicinal properties, contain bioactive compounds that may be produced by endophytic fungi. This study aimed to isolate endophytic fungi from soursop leaves and evaluate their potential as antimicrobial compound producers. Twenty endophytic fungal isolates were obtained from soursop leaves using Potato Dextrose Agar (PDA) supplemented with leaf extract. Out of these isolates, eight demonstrated antimicrobial activity against the tested microorganisms. Notably, the extract produced by SLE16 exhibited inhibitory effects against Gram-negative bacteria, while isolates SLE7, SLE8, and SLE14 showed antifungal activity against Candida albicans. Furthermore, isolates SLE18, SLE19, and SLE20 displayed significant inhibition of Trichophyton rubrum growth. The extracellular extracts derived from these endophytic fungi exhibited hydrophilic properties and formed inhibition zones larger than 15 mm, indicating their potential as antimicrobial compounds. These findings highlight the potential of endophytic fungi isolated from soursop leaves as valuable sources of novel antimicrobial compounds

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