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Antioxidant and Antibacterial Activity of Extract Combination from Sonneratia alba and Heterotrigona itama Propolis Amilia, Andini Nur; Kustiawan, Paula Mariana
Indonesian Journal of Pharmaceutical Science and Technology 2024: Suppl. 6, no. 3 (The 3rd Mandala Waluya International Conference on Pharmaceutical Science and
Publisher : Indonesian Journal of Pharmaceutical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/ijpst.v6i3.53776

Abstract

Sonneratia alba or rambai leaves are a plant from East Kalimantan that the community has used for generations as a cold powder. Antioxidants are needed to ward off free radicals, while bacteria are one of the causes of acne. Propolis also shows potential as an antioxidant and antibacterial agent. This research evaluated whether the combination of Sonneratia alba leaves extract and Heterotrigona itama propolis can increase antioxidant and antibacterial activity and whether this combination has synergistic potential. The S. alba leaves and H. itama propolis were macerated using ethanol as the solvent. The antioxidant activity test using the DPPH method with three comparisons of 1:1, 1:2, and 2:1 produced IC50 values of 12.669 µg/ml, 32.756 µg/ml, and 19.694 µg/ml, respectively. The IC50 value for ascorbic acid is 12.293 µg/ml. The results show that the combination of S. alba leaves and H. itama propolis ethanol extract has very strong antioxidant activity. The antibacterial activity test against Staphylococcus aureus bacteria with three concentrations of 60%, 80%, and 100% showed inhibition zones of 10.5 mm (medium category), 16 mm, and 17.5 mm (strong category), respectively.
Edukasi Peran Vitamin dalam Menjaga Imunitas pada Siswa SMP Muhammadiyah 5 Samarinda Fahdianto, Arifin Nur; Astutik, Anggun Puji; Amilia, Andini Nur; Helmi, Helmi
Jurnal Pengabdian Masyarakat (ABDIRA) Vol 6, No 1 (2026): Abdira, Januari
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/abdira.v6i1.1553

Abstract

Adolescence is a crucial growth period requiring optimal micronutrient intake, yet many Indonesian adolescents lack sufficient vitamin consumption. This health promotion activity aimed to enhance the knowledge of students at SMP Muhammadiyah 5 Samarinda regarding the role of vitamins in maintaining immunity. The method involved interactive counseling using PowerPoint presentations and the distribution of educational leaflets to 28 students. Knowledge was measured using pre-test and post-test instruments. Results showed a significant increase in average knowledge scores, from 65% in the pre-test to 89.29% in the post-test. Two-way discussions and visual media proved effective in facilitating cognitive changes among participants. In conclusion, this education successfully strengthened students' health literacy regarding the importance of vitamins for the immune system. This community-based health promotion innovation is recommended for replication to support sustainable adolescent health.