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Dikki Miswanda
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INDONESIA
Indonesian Journal of Science and Pharmacy
Published by Pustaka Media Publishing
ISSN : -     EISSN : 30255244     DOI : -
Core Subject : Health, Science,
Biochemistry, Genetics & Molecular Biology Chemistry Immunology & microbiology Medicine & Pharmacology
Indonesian Journal of Science and Pharmacy (IJSP) accepts scientific articles as original research articles, short communication, reviews, and mini-reviews from anyone without any discrimination, as long as they submit articles that meet scientific principles. Indonesian Journal of Science and Pharmacy publishes various scientific articles covering Science and Pharmacy, Pharmaceutical Sciences. The following are the field within the scope of Indonesian Journal of Science and Pharmacy: Chemistry, Biology, Pharmacology-Toxicology, Pharmacognosy-Phytochemistry, Pharmaceuticals, Analytical Pharmacy-Medicinal Chemistry, Natural Product Development, Management Pharmacy, Clinical-Community Pharmacy, Microbiology Pharmacy.
Arjuna Subject : Pharmacology, Toxicology and Pharmaceutics - Pharmacology, Toxicology and Pharmaceutics (Lain-Lain)
Articles 44 Documents
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Green Synthesis of Copper Nanoparticles Using Syzygium polyanthum Extract and Their Antioxidant Potential via DPPH Assay Nasution, Shamila Sufi Aulia; Miswanda, Dikki; Ridwanto, Ridwanto; Dalimunthe, Gabena Indrayani
Indonesian Journal of Science and Pharmacy Vol. 3 No. 1 (2025): Indonesian Journal of Science and Pharmacy
Publisher : Pustaka Media Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63763/ijsp.v3i1.117

Abstract

Copper nanoparticles (CuNPs) have gained attention for their cost-effective synthesis and potent antioxidant properties, offering a promising approach to address the bioavailability challenges of herbal medicines. This study investigates the green synthesis of CuNPs using bay leaf (Syzygium polyanthum (Wight.) Walp.) extract as a bioreductor and evaluates their antioxidant activity via the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. Bay leaf extract, rich in flavonoids and phenolic compounds, was prepared through heating extraction and mixed with copper nitrate (CuNO₃) at varying ratios (1:1, 1:2, 1:3, 1:4). The formation of CuNPs was confirmed by a color change from yellow to greenish-brown after 24 hours, with particle sizes ranging from 527.48 nm to 3256.81 nm, as determined by Particle Size Analysis (PSA). UV-Vis spectrophotometry verified the reduction of Cu⁺ ions, with Cu concentrations decreasing post-synthesis. The antioxidant activity of CuNPs exhibited an IC₅₀ value of 15.49 ppm, classified as very strong, compared to 72.09 ppm for the bay leaf extract alone (strong) and 13.82 ppm for vitamin C (very strong). These results demonstrate that bay leaf extract-mediated CuNPs possess enhanced antioxidant potential, highlighting the efficacy of green synthesis in producing bioactive nanoparticles for potential therapeutic applications.
Formulation and Evaluation of Pharmaceutical Suspensions Using Hemicellulose Extracted from Oil Palm Empty Fruit Bunches Savika, Anggraini; Miswanda, Dikki; Lubis, Minda Sari; Dalimunthe, Gabena Indrayani
Indonesian Journal of Science and Pharmacy Vol. 3 No. 1 (2025): Indonesian Journal of Science and Pharmacy
Publisher : Pustaka Media Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63763/ijsp.v3i1.113

Abstract

Oil palm empty fruit bunches (OPEFB), a major solid waste from palm oil processing, represent a rich source of lignocellulosic biomass that can be valorized into high-value bioproducts. This study aimed to isolate hemicellulose from OPEFB and evaluate its potential as a natural suspending agent in pharmaceutical suspension formulations, either alone or in combination with sodium carboxymethyl cellulose (CMC-Na). A series of formulations (F0–F5) were prepared and characterized for organoleptic properties, pH, density, viscosity, sedimentation volume, and redispersibility over seven days of storage. The results showed that suspensions containing OPEFB hemicellulose exhibited acceptable sensory characteristics, stable pH values (5–7), and densities above 1.00 g/mL. The addition of hemicellulose and CMC-Na significantly increased viscosity (up to 683.5 cP) and improved sedimentation stability, with sedimentation volumes reaching 0.22 and redispersibility up to 90% in formulations F2 and F3. These findings indicate a synergistic effect between hemicellulose and CMC-Na, enhancing suspension uniformity and preventing particle aggregation without compromising flowability. In conclusion, OPEFB-derived hemicellulose demonstrates excellent potential as a biodegradable and eco-friendly suspending agent for pharmaceutical suspensions. Its use not only improves formulation stability but also promotes the sustainable utilization of palm oil industry waste in green pharmaceutical product development. Oil palm empty fruit bunches (OPEFB), a major solid waste from palm oil processing, represent a rich source of lignocellulosic biomass that can be valorized into high-value bioproducts. This study aimed to isolate hemicellulose from OPEFB and evaluate its potential as a natural suspending agent in pharmaceutical suspension formulations, either alone or in combination with sodium carboxymethyl cellulose (CMC-Na). A series of formulations (F0–F5) were prepared and characterized for organoleptic properties, pH, density, viscosity, sedimentation volume, and redispersibility over seven days of storage. The results showed that suspensions containing OPEFB hemicellulose exhibited acceptable sensory characteristics, stable pH values (5–7), and densities above 1.00 g/mL. The addition of hemicellulose and CMC-Na significantly increased viscosity (up to 683.5 cP) and improved sedimentation stability, with sedimentation volumes reaching 0.22 and redispersibility up to 90% in formulations F2 and F3. These findings indicate a synergistic effect between hemicellulose and CMC-Na, enhancing suspension uniformity and preventing particle aggregation without compromising flowability. In conclusion, OPEFB-derived hemicellulose demonstrates excellent potential as a biodegradable and eco-friendly suspending agent for pharmaceutical suspensions. Its use not only improves formulation stability but also promotes the sustainable utilization of palm oil industry waste in green pharmaceutical product development.
Phytochemical Screening and Antibacterial Activity of Jatropha multifida Leaf Extract Against Pseudomonas aeruginosa Manik, Umi Chairani; Rahmadani, Rahmadani
Indonesian Journal of Science and Pharmacy Vol. 3 No. 2 (2025): Indonesian Journal of Science and Pharmacy
Publisher : Pustaka Media Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63763/ijsp.v3i2.133

Abstract

The increasing prevalence of antibiotic-resistant bacteria has encouraged the exploration of alternative antibacterial agents derived from medicinal plants. Jatropha multifida L., commonly known as the Bethadine plant, has been traditionally used for treating infections and wounds due to its bioactive phytochemical compounds. This study aimed to evaluate the antibacterial activity of Jatropha multifida leaf extract against Pseudomonas aeruginosa and to identify the presence of secondary metabolites through phytochemical screening. The study employed an experimental laboratory design. Jatropha multifida leaves were processed into simplicia powder and extracted using the maceration method. Phytochemical screening was performed to detect the presence of alkaloids, flavonoids, saponins, steroids/triterpenoids, and tannins. The antibacterial activity of the extract was tested against Pseudomonas aeruginosa using the agar disc diffusion (Kirby–Bauer) method at concentrations of 10%, 20%, 30%, 40%, and 50%. Chloramphenicol and dimethyl sulfoxide (DMSO) were used as positive and negative controls, respectively. Phytochemical screening revealed the presence of several secondary metabolites, including alkaloids, flavonoids, saponins, steroids/triterpenoids, and tannins in the Jatropha multifida leaf extract. The antibacterial assay demonstrated that the extract inhibited the growth of Pseudomonas aeruginosa, as indicated by the formation of inhibition zones around the discs. The diameter of the inhibition zones increased with increasing extract concentration, indicating a concentration-dependent antibacterial effect. Jatropha multifida leaf extract possesses antibacterial activity against Pseudomonas aeruginosa, which may be attributed to the presence of bioactive secondary metabolites. These findings suggest that the plant has potential as a natural source of antibacterial agents. Further studies are recommended to isolate and characterize the active compounds responsible for the antibacterial activity.
Comparative Determination of Vitamin C Content in Different Varieties of Tomato (Solanum lycopersicum L.) Using UV Spectrophotometry Ainun, Nur; Daulay, Anny Sartika; Ridwanto, Ridwanto; Pulungan, Ainil Fitri
Indonesian Journal of Science and Pharmacy Vol. 3 No. 2 (2025): Indonesian Journal of Science and Pharmacy
Publisher : Pustaka Media Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63763/ijsp.v3i2.134

Abstract

Tomato (Solanum lycopersicum L.) is one of the most widely consumed fruits and vegetables due to its nutritional value and health benefits. This study aimed to determine the vitamin C, glucose, and crude fiber contents in different tomato varieties, namely red, yellow, green, and cherry tomatoes. The analysis included phytochemical screening, qualitative tests, and quantitative determination. Phytochemical screening was performed to identify the presence of secondary metabolites, while qualitative tests were conducted to confirm the presence of vitamin C and glucose. Quantitative analysis of vitamin C and glucose was carried out using the UV–Vis spectrophotometric method, whereas crude fiber content was determined using the gravimetric method. The results showed that flavonoids, alkaloids, and saponins were present in all tomato samples, while glycosides and tannins were detected only in certain varieties, and steroids/triterpenoids were not detected. Quantitative analysis indicated that the highest vitamin C content was found in red tomatoes (21.62 ± 0.178 µg/100 g), followed by cherry tomatoes (18.78 ± 0.002 µg/100 g), yellow tomatoes (18.38 ± 1.038 µg/100 g), and green tomatoes (12.20 ± 2.287 µg/100 g). The glucose content was 39.2 ± 0 µg/100 g in red tomatoes and 34.53 ± 0.597 µg/100 g in green tomatoes. Meanwhile, the crude fiber analysis showed the highest content in yellow tomatoes (53.44%), followed by cherry tomatoes (48.10%), red tomatoes (42.05%), and green tomatoes (40.37%). These findings indicate that different tomato varieties possess distinct nutritional profiles, and tomatoes can be considered a valuable dietary source of vitamin C, natural sugars, and dietary fiber that may contribute to maintaining human health.

Page 5 of 5 | Total Record : 44

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