Claim Missing Document
Check
Articles

Found 14 Documents
Search

Fabrication and Characterization of Pineapple Leaf Fiber (PALF) as Candidate of Composite Reinforcing Material Wulan Ratia Ratulangi; Rosnalia Widyan; Adriyan Suhada; Rahmad Dani
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol. 13 No. 1: January 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v13i1.13563

Abstract

Pineapple leaf is a waste product of pineapple cultivation which may leads to environmental issues. Pineapple leaf fibre (PALF) is an important natural fibre with high cellulose content that exhibits high mechanical properties which is high specific strength and stiffness which may vary for each cultivar. Besides, isolation of cellulose from lignocellulosic fibre become more crucial. In this study, isolation of cellulose were undergo by alkaline treatment In that order, concentration of NaOH 0.5% at 121oC for 60 min and bleaching teatment using NaClO 10% at 121oC for 30. The PALF and treated fiber were characterized using Tensilon, Scanning Electron Microscopy, Fourier Transmission Infrared Spectroscopy. Based on results, 5%  NaOH (60 min) and bleaching process by using 10% NaClO (30 min) in autoclave succeed to remove pektin, lignin, and unwanted components. The surface morphology showed high surface area, however still remaining small amaount of pektin and lignin was confirmed from FTIR and SEM images.
Antioxidant Activity of Ethanol Extract Combination of Cavendis Banana Peel (Musa acuminata) and Kepok Banana Peel (Musa paradisiaca) Using the DPPH Method Adriyan Suhada; Tuhfatul Ulya; Roushandy Asri Fardani; Ajeng Dian Pertiwi; Idham Halid; Pauzan Pauzan; Wulan Ratia Ratulangi; Nurul Indriani; Ni Nyoman Ariwidiani; Rosnalia Widyan; Evi Fatmi Utami; Wanda Novianty
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol. 13 No. 3: July 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v13i3.15782

Abstract

Banana peels, often considered agricultural waste, are rich in bioactive compounds with significant antioxidant potential. This study evaluates the antioxidant activity of a combined ethanol extract from Cavendis (Musa acuminata) and Kepok (Musa paradisiaca) banana peels using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. The extraction was performed via maceration with 96% ethanol, yielding 9.13%. Phytochemical analysis identified key compounds including flavonoids, tannins, saponins, and steroids/terpenoids, which are known to exhibit antioxidant properties. The extract demonstrated strong radical scavenging activity with an IC50 of 6.47 ppm and an Antioxidant Activity Index (AAI) of 5.40, comparable to Vitamin C (IC50 = 6.29 ppm; AAI = 5.56). These results indicate a synergistic effect from combining the two banana peel varieties, enhancing antioxidant efficacy beyond that reported for individual peels. This study supports the potential use of Cavendis and Kepok banana peel extracts as sustainable natural antioxidants for application in food preservation, nutraceuticals, and cosmetics. Future work should focus on optimizing extraction methods, detailed phytochemical profiling, stability assessment, and in vivo validation to advance product development and maximize health benefits.
Formulasi dan Uji Aktivitas Antibakteri Sediaan Sabun Mandi Padat Kombinasi Ekstrak Daun Sirih Hijau (Piper betle L.) dan Daun Kemangi Lombok (Ocimum sanctum L.) terhadap Bakteri Propionibacterium acnes. Liana Oktavia Cahyani; Rosnalia Widyan; Wulan Ratia Ratulangi; Mohd Nazil Salleh
EduInovasi:  Journal of Basic Educational Studies Vol. 6 No. 2 (2026): EduInovasi:  Journal of Basic Educational Studies
Publisher : Intitut Agama Islam Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/edu.v6i2.12308

Abstract

Acne is one of the most common skin disorders caused by Propionibacterium acnes, while prolonged use of antibiotics may contribute to bacterial resistance, highlighting the need for natural antibacterial alternatives. This study aimed to formulate solid bath soap containing a combination of green betel leaf (Piper betle L.) and Lombok basil (Ocimum sanctum L.) extracts and to evaluate its physical characteristics and antibacterial activity against Propionibacterium acnes. A laboratory experimental method was employed using three extract concentrations, namely 5%, 7%, and 9%. The evaluation included organoleptic properties, homogeneity, pH, moisture content, foam height, irritation test, antibacterial activity, and statistical analysis using One Way ANOVA followed by Tukey HSD. The results demonstrated that all formulations fulfilled the physical quality requirements, caused no skin irritation, and exhibited antibacterial activity. The average inhibition zones were 19.0 mm, 25.6 mm, and 28.6 mm, while the positive control produced a 29.0 mm inhibition zone. Statistical analysis revealed a significant difference in antibacterial activity among treatments (p=0.010). These findings indicate that increasing extract concentration enhanced antibacterial activity, although differences among formulations were not entirely significant. Therefore, the combination of green betel leaf and Lombok basil extracts has promising potential as a natural active ingredient in antibacterial solid bath soap for inhibiting the growth of Propionibacterium acnes.
Imunomodulator Zinc (Zn) Terhadap Pertumbuhan Parasitemia Pada Mencit BALB/C Yang diinfeksi Plasmodium Berghei ANKA Ni Nyoman Ariwidiani; Rosnalia Nyoman Widyan; Wulan Ratia Ratulangi
JPP JURNAL KESEHATAN POLTEKKES PALEMBANG Vol 20 No 2 (2025): JPP (Jurnal Kesehatan Poltekkes Palembang)
Publisher : Poltekkes Kemenkes Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36086/jpp.v20i2.2975

Abstract

Background: Malaria infection is a disease with significant mortality, especially in tropical and subtropical areas. The rupture of infected red blood cells will stimulate the role of the immune system, CD4+ T cells will release IFN-γ cytokines that play a role in stimulating the activation of CD8+ T lymphocytes, which play a role in controlling parasitemia. Zinc is known to be involved in T cell signaling that can increase the expression of IFN-γ cytokines that play a role in parasite elimination. Methods: 20 minutes after being infected with P. berghei ANKA, were divided into 4 groups. Group 1-2 were given zinc as therapy with a concentration of 10mg/ml with a dose of 50mg/kgBW and 100mg/kgBW. Group 3 was a negative control (NC) given 0.5% sodium carboxylmethyl cellulose (CMCNa). Group 4 was a positive control treated with dihydroartemisinin-piperaquine (DHP) with a concentration of 187.2 mg/kgBW. Therapy was given for 4 days of observation, and parasitemia was observed every day after 24 hours of the first administration until the 4th day after administration. Results: Significant results were obtained in the parasitemia inhibition analysis after zinc administration on day 3 (p = 0.027) and day 4 (p = 0.001). Based on the results of the analysis, it was shown that zinc has anti-malarial activity that can inhibit the growth of parasitemia in test mice. Conclusion: Zinc as an antimalarial showed effectiveness in reducing parasitemia in BALB/c mice infected with P. berghei ANKA.