Article Per Year (5 Year)
p-Index From 2021 - 2026
1.99
P-Index
This Author published in this journals
All Journal PROSIDING SEMINAR KIMIA Jurnal Kimia Mulawarman Science and Technology Indonesia JURNAL ATOMIK
Ruga, Ritbey
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Materials Science & Nanotechnology Physics

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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.
The Potential oOf Butterfly Root Plant (Phanera semibifida Roxb. var. semibifida) Stem as a Source of Antioxidants and Natural Sunscreen Agent T, Nurnaningsi; Hairani, Rita; Saleh, Chairul; Ruga, Ritbey; Marliana, Eva; Hendra, Medi
JURNAL KIMIA MULAWARMAN Vol 23 No 1 (2025)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v23i1.1559

Abstract

Phanera semibifida Roxb. var. semibifida merupakan tanaman liana yang berasal dari famili Leguminosae. Tanaman ini umum digunakan sebagai tanaman obat oleh berbagai suku bangsa di Kalimantan. Penelitian ini bertujuan untuk mengidentifikasi metabolit sekunder menggunakan metode kromatografi lapis tipis (KLT), mengevaluasi aktivitas antioksidan menggunakan metode DPPH (2,2-difenil-1-pikrilhidrazil), dan menilai potensi tabir surya secara in vitro menggunakan spektrofotometer UV-Vis. Uji fitokimia menunjukkan bahwa baik ekstrak metanol kasar maupun fraksi etil asetat mengandung alkaloid, steroid, triterpenoid, fenolik, dan flavonoid. Fraksi n-heksana mengandung steroid dan triterpenoid. Fraksi air mengandung alkaloid, fenolik, dan flavonoid. Aktivitas antioksidan diamati dalam ekstrak metanol kasar, n-heksana, etil asetat, dan fraksi air dengan nilai IC₅₀ masing-masing 19,51; 105,08; 16,99 dan 137,30 mg/L. Aktivitas tabir surya ditentukan berdasarkan nilai SPF pada konsentrasi 25, 50, 100, 150, 200, dan 250 mg/L untuk ekstrak kasar, fraksi n-heksana, etil asetat, dan air, yang masing-masing berkisar antara 0,52–6,55, 0,63–6,91, 1,51–17,93, dan 0,23–3,01. Hasil ini menunjukkan potensi Phanera semibifida Roxb. var. semibifida sebagai kandidat alami dengan aktivitas antioksidan dan sifat pelindung matahari.
Co-Authors -, Nurfadzillah Ayu, Linda Daniel Djihan Ryn Pratiwi, Djihan Ryn Ersanto, Tri Edi Eva Marliana, Eva Indra Masmur Jonathan Jonathan Julianto, Faisal Reja Magdaleni, Agustina Rahayu Masmur, Hestina Matutu, Deni Ari Medi Hendra, Medi Nursanti, Oktavia Widya Pramana, Aditiya Hadi Ryan Puspitasari, Intan Dessy Rahmaniah, Rahmaniah Ramadhan, Aulia Rita Hairani Ritson Purba, Ritson Rudi Kartika, Rudi Saibun Sitorus Saleh, Chairul Soerja Koesnarpadi Subur P Pasaribu Supratman, Rafif Ghanaifalah Dely T, Nurnaningsi Teguh Wirawan, Teguh Winni Astuti, Winni