Nabila, Najwa (2026) UJI AKTIVITAS ANTIBAKTERI EKSTRAK CANGKANG KEPALA UDANG WINDU (Penaeus monodon Fabricius) PADA BAKTERI Streptococcus mutans. Diploma thesis, Universitas Harkat Negeri.
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Abstract
INTISARI Nabila, Najwa; Tivani, Inur; Muldiyana, Tya; 2026. Uji Aktivitas Antibakteri Ekstrak Cangkang Udang Windu (Penaeus monodon Fabricius) Pada Bakteri Streptococcus mutans Karies gigi disebabkan oleh Streptococcus mutans yang membentuk biofilm dan merusak jaringan gigi, dengan prevalensi di Indonesia mencapai lebih dari 90% pada anak. Limbah cangkang udang windu berpotensi dimanfaatkan sebagai sumber kitosan antibakteri untuk menghambat pertumbuhan bakteri penyebab karies gigi. Penelitian ini bertujuan untuk menentukan konsentrasi ekstrak cangkang udang windu paling optimal yang memberikan aktivitas antibakteri tertinggi dalam menghambat pertumbuhan bakteri Streptococcus mutans. Analisis data menggunakan deskriptif kuantitatif. Jenis penelitian ini bersifat eksperimental Metode ekstraksi yang digunakan adalah metode perkolasi. Penelitian ini menggunakan tiga jenis media sebagai media uji yaitu media Nutrien Agar (NA), Brain Heart Infusion (BHI), Mueller Hinton Agar (MHA). Uji aktivitas antibakteri menggunakan metode difusi sumuran dengan uji daya hambat ekstrak cangkang udang windu sebanyak tiga replikasi per formulasi 1 = 0,5%, formulasi 2 = 1%, formulasi 3 = 2%. Hasil penelitian menunjukkan bahwa ekstral cangkang udang windu mempunyai aktivitas antibakteri terhadap bakteri Streptococcus mutans. Dari data yang diperoleh menyatakkan bahwa formulasi 3 memiliki daya hambat paling baik dibandingkan dengan formulasi 1 dan 2. Ini dapat dilihat dari diameter zona hambat paling tinggi pada formulasi 3 yaitu 3,5 mm, dengan rata-rata zona hambat sebesar 3,0 mm. Kata Kunci : Streptococcus mutans, ekstrak cangkang udang windu, zona hambat, antibakteri ABSTRACT Nabila, Najwa; Tivani, Inur; Muldiyana, Tya; 2026. Antibacterial Activity Test of Windu Shrimp Shell Extract (Penaeus monodon Fabricius) on Streptococcus mutans Bacteria Dental caries is caused by Streptococcus mutans, which forms biofilms and damages tooth tissue, with a prevalence in Indonesia reaching more than 90% in children. Windu shrimp shell waste has the potential to be used as a source of antibacterial chitosan to inhibit the growth of bacteria that cause caries. This study aims to determine the optimal concentration of windu shrimp shell extract that provides the highest antibacterial activity in inhibiting the growth of Streptococcus mutans bacteria. Data analysis used quantitative descriptive methods. This research was experimental in nature. The extraction method used was percolation. This study used three types of media as test media, namely Nutrient Agar (NA), Brain Heart Infusion (BHI), and Mueller Hinton Agar (MHA). The antibacterial activity test used the well diffusion method with three replicates per formulation: formulation 1 = 0.5%, formulation 2 = 1%, and formulation 3 = 2%. The results showed that Windu shrimp shell extract had antibacterial activity against Streptococcus mutans bacteria. The data obtained indicated that formulation 3 had the best inhibitory effect compared to formulations 1 and 2. This can be seen from the highest inhibition zone diameter in formulation 3, which was 3.5 mm, with an average inhibition zone of 3.0 mm. Keywords: Streptococcus mutans, windu shrimp shell extract, inhibition zone, antibacterial
| Item Type: | Thesis (Diploma) |
|---|---|
| Subjects: | Q Science > QR Microbiology R Medicine > RA Public aspects of medicine |
| Divisions: | Sekolah Vokasi Kesehatan > Diploma III Farmasi |
| Depositing User: | Najwa Nabila |
| Date Deposited: | 29 Sep 2026 08:01 |
| Last Modified: | 29 Sep 2026 08:01 |
| URI: | http://repository.harkatnegeri.ac.id/id/eprint/8256 |
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