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All Journal PROSIDING SEMINAR KIMIA Science and Technology Indonesia JURNAL ATOMIK Jurnal Abdimas Mahakam
Ruga, Ritbey
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Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Energy Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Public Health Social Sciences

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AKTIVITAS ANTI-Staphylococcal SECARA IN VITRO EKSTRAK DIKLOROMETANA DARI RIMPANG TEMU KUNCI (Boesenbergia rotunda) TERHADAP Staphylococcus aureus ATCC 25923 Matutu, Deni Ari; Hairani, Rita; Ruga, Ritbey
JURNAL ATOMIK Vol 10 No 1 (2025)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v10i1.1404

Abstract

The rhizome of temu kunci (Boesenbergia rotunda) is one of the plants used by the local people in Indonesia as a traditional medicine. This study aimed to identify the secondary metabolite compounds contained in the dichloromethane extract with phytochemical screening and investigate its antibacterial activity against test bacteria Staphylococcus aureus ATTC 25923 was carried out by agar diffusion method with modification where tetracycline as a positive control and ethanol as a negative control. The phytochemical screening showed the dichloromethane extract contains secondary metabolites such as alkaloids, flavonoids, phenolics and triterpenoids. With 1 mg/mL of dichloromethane extract revealed its antibacterial activity against S. aureus with inhibitory zone value of 15.0 ± 0.0 mm while its MIC value of the extract was 0.031 ± 0.0 mg/mL toward of tested bacteria. In addition, tetracycline as a positive control at 0.5 μg/mL exhibited its antibacterial potential with an inhibitory zone value of 22.0 ± 0.0 mm and its MIC value of 0.016 ± 0.577 µg/mL.
AKTIVITAS ANTIBAKTERI BUNGA KERTAS (Bougainvillea glabra): REVIEW ARTIKEL Supratman, Rafif Ghanaifalah Dely; Hairani, Rita; Ruga, Ritbey
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Herbal or medicinal plants contain many diverse phytochemical compounds and provide various biological effects. One of them is Bougainvillea glabra which is often used in traditional medicine in various countries due to the plant has bioactive compounds, one of which is antibacterial. This study aims to determine the antibacterial activity of Bougainvillea glabra. The methodology used was a literature study using several scientific articles about antibacterial activity published in the last ten years and published in national and international scientific journals as library sources through searches on Google Scholar site. The results showed that Bougainvillea glabra had inhibitory activity against the bacteria Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Bacillus cereus, but it had not inhibitory activity against the bacteria Listeria monocytogenes and Salmonella sp. Keywords : Bougainvillea glabra, bioactive, antibacterial
The Utilization of Chitosan from Maggot (Hermetia illucens) Exuvia as Edible Coating for Tomatoes (Lycopersicon esculentum) and Edible Film with the Addition of Honey as an Antibacterial Agent Daniel; Sitorus, Saibun; Pasaribu, Subur P.; Marliana, Eva; Hairani, Rita; Ruga, Ritbey; Purba, Ritson; Saleh, Chairul; Pratiwi, Djihan Ryn; Magdaleni, Agustina Rahayu; Masmur, Indra; Masmur, Hestina
Science and Technology Indonesia Vol. 10 No. 4 (2025): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.4.1232-1241

Abstract

The use of chitosan from maggot (Hermetia illucens) exuvia as an edible coating for tomatoes (Lycopersicon esculentum) and an edible film with honey added as an antibacterial agent was investigated. This study aimed to determine the yield of chitosan from black soldier fly (BSF, Hermetia illucens) maggot exuviae as an edible coating. The chitosan was produced from chitin by deacetylation, and its effect on the weight loss and vitamin C levels of tomatoes for 7 days after treatment was investigated. The chitosan coating was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy. The antibacterial activity was evaluated using a disk diffusion method. The result showed that by deacetylation, conversion of chitin produced chitosan with a yield of 72% and a deacetylation degree of 75.05%. The chitosan coating significantly affected the weight loss of tomatoes, with the best concentration being 2%. However, the treatment did not significantly affect the decrease in vitamin C levels. The edible chitosan film from BSF maggot exuviae with added honey had a thickness, water content, and water vapor transmission rate of 0.156 mm, 16.9913%, and 30.45 g/m2/24 hours, respectively. SEM characterization showed a relatively dense surface structure, which was slightly smooth and porous. Regarding antibacterial activity, the edible chitosan film inhibited Staphylococcus aureus with an inhibition zone of 10.37 mm; however, Escherichia coli was not inhibited. These results suggest that chitosan from BSF maggot exuviae has potential as an effective edible coating for reducing weight loss in tomatoes despite showing limited antibacterial properties.
Co-Authors -, Nurfadzillah Ayu, Linda Chairul Saleh Daniel Djihan Ryn Pratiwi, Djihan Ryn Ersanto, Tri Edi Eva Marliana, Eva Hairani, Rita Indra Masmur Jonathan Jonathan Julianto, Faisal Reja Magdaleni, Agustina Rahayu Masmur, Hestina Matutu, Deni Ari Nursanti, Oktavia Widya Pramana, Aditiya Hadi Ryan Puspitasari, Intan Dessy Rahmaniah, Rahmaniah Ramadhan, Aulia Ritson Purba, Ritson Rudi Kartika, Rudi Saibun Sitorus Soerja Koesnarpadi Subur P Pasaribu Supratman, Rafif Ghanaifalah Dely Teguh Wirawan, Teguh Winni Astuti, Winni