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All Journal Jurnal Biologi Tropis Jurnal Gema Ngabdi
Alaydrus, Mukaddam
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology Social Sciences

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The Study of Effectiveness of Chitosan from Pearl Oyster (Pinctada maxima) Shell as Antibacterial in Bone Scaffold Application Alaydrus, Mukaddam; Purnaning, Dyah; Ansyori, Maz Isa; Septiani, Nonik; Alawiyah, Geby; Rahayu, Susi; Taufik, Ahmad
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i1.8135

Abstract

Chitosan is a functional material with potential for bone scaffolds due to its antibacterial properties, biocompatibility, biodegradability, low toxicity, and ability to support tissue regeneration and prevent infections in graft implantation.This study aims to identify changes in functional groups in each isolation process and identify the effect of chitosan concentration  on the activity of Straphylococcus aureus and Escherichia coli bacteria. Chitosan isolation methods are demineralization, deproteination, decolorization, and deacetylation by microwave irradiation. Analysis of chitosan functional groups using FTIR, while antibacterial activity test using diffusion method. Isolation of chitosan from pearl oyster shells (Pinctada maxima sp.) obtained a degree of deacetylation of chitosan of 95.37%. Pearl oyster shell powder identified typical peaks of calcium carbonate (CaCO₃). The demineralized powder sample had calcium carbonate (CO₃²⁻) peaks that disappeared. Furthermore, the deproteinated powder sample produced peaks with amide groups (C=O dan N-H) of reduced protein. Decolorized powder samples did not show drastic changes in the bands of the deproteinated powder spectra, but the spectra could show cleaner and clearer peaks without any interference from pigments. The last, deacetylated powder sample showed a decrease in peak intensity in the 1650 cm⁻¹ (C=O amide). The analysis of the ability of chitosan to inhibit the growth of E. Coli and S. Aureus bacteria was effective at a minimum chitosan concentration of 20%. In comparison, antibacterial activity in S. aureus is better than in E. coli. Chitosan from this shell can serve as an antibacterial, but its manufacturing techniques need optimization for better efficacy.
The Knowledge Level of Elderly in Karang Taliwang Village and the Incidence of Low Back Pain in 2025 Lioni, Ni Kadek; Wedayani, Anak Agung Ayu Niti; Purnaning, Dyah; Alaydrus, Mukaddam
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i1.8571

Abstract

Low Back Pain (LBP) is a prevalent musculoskeletal problem worldwide, particularly among the elderly population. This study aims to analyze the relationship between the level of knowledge among elderly individuals in Karang Taliwang Village and the incidence of LBP. A quantitative approach with a cross-sectional design was employed, using an ordinal scale to measure knowledge levels and a nominal scale for LBP incidence. The results indicate a significant relationship between knowledge levels and LBP incidence, where elderly individuals with lower knowledge levels tend to experience LBP more frequently. This study concludes that enhancing education on LBP risk factors and prevention is essential for reducing its prevalence among the elderly. The scientific implication of this study highlights the need for evidence-based educational interventions to lower LBP prevalence and improve the quality of life among older adults.
Hubungan Tingkat Pengetahuan Pelajar Tentang Cedera Otak Sebelum Dan Sesudah Penyuluhan Di SMA Negeri 1 Selong Muhammad Rosyidi, Rohadi; Priyanto, Bambang; Januarman, Januarman; Alaydrus, Mukaddam; Zulkarnaen, Decky Aditya
Jurnal Gema Ngabdi Vol. 6 No. 2 (2024): JURNAL GEMA NGABDI
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v6i2.438

Abstract

Brain injuries have the third largest prevalence of other injuries in Indonesia. Most brain injuries occur on the road because of motorbike accidents. The only effective way to reduce the number of deaths due to brain injuries that occur in motorbike accidents is to use a helmet. SMA 1 Selong was chosen because the area is densely populated and awareness of wearing helmets is still low. Activities are carried out using lecture methods, demonstrations and carrying out pre-tests and post-tests. The activity was held in the SMA 1 Selong Hall on May 4, 2024, with 50 students participating in the training. The students' post-test results were 86.7, including knowledge in the good category. There is an increase in the knowledge of service participants regarding the advice of using helmets and preventing brain injuries.
Penyuluhan Pentingnya Penggunaan Helm Standar Guna Menurunkan Angka Kejadian Cedera Otak Di SMAN 1 Pringgabaya Muhammad Rosyidi, Rohadi; Priyanto, Bambang; Januarman, Januarman; Alaydrus, Mukaddam; Zulkarnaen, Decky Aditya
Jurnal Gema Ngabdi Vol. 6 No. 2 (2024): JURNAL GEMA NGABDI
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v6i2.439

Abstract

Brain injuries have the third largest prevalence of other injuries in Indonesia. Most brain injuries occur on the road because of motorbike accidents. The only effective way to reduce the number of deaths due to brain injuries that occur in motorbike accidents is to use a helmet. SMA 1 Pringgabaya was chosen because the area is densely populated and awareness of wearing helmets is still low. Activities are carried out using lecture methods, demonstrations and carrying out pre-tests and post-tests. The activity was held in the SMA 1 Pringgabaya Hall on May 4, 2024, with 200 students participating in the training. The students' post-test results were 83.3, including knowledge in the good category. There is an increase in the knowledge of service participants regarding the advice of using helmets and preventing brain injuries.
Co-Authors Ahmad Taufik Alawiyah, Geby Anak Agung Ayu Niti Wedayani Ansyori, Maz Isa Bambang Priyanto, Bambang Decky Aditya Zulkarnaen Januarman, Januarman Lioni, Ni Kadek Muhammad Rosyidi, Rohadi Purnaning, Dyah Septiani, Nonik Susi Rahayu