Novalianti Putri, . (2025) PENGARUH PERBEDAAN KONSENTRASI BIJI KEFIR TERHADAP KARAKTERISTIK KEFIR AIR KELAPA MUDA (Cocos nucifera L.) DAN AKTIVITAS ANTIBAKTERI Shigella dysenteriae. Skripsi thesis, Universitas Pembangunan Nasional Veteran Jakarta.
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Abstract
Shigella dysenteriae is a pathogenic bacterium that causes dysentery. Preventive measures using probiotic beverages such as young coconut water kefir can help reduce the incidence of antibiotic resistance due to the misuse of antibiotics without a doctor's prescription. The nutritional content of kefir, including lactic acid bacteria (LAB) and bacteriocins, has the potential to exhibit antibacterial activity. This study aims to determine the effect of varying kefir grain concentrations on the characteristics of kefir and its antibacterial activity against Shigella dysenteriae. Kefir was formulated using kefir grain concentrations of 4%, 6%, and 8%, and was evaluated through organoleptic testing, pH measurement, total titratable acidity, sugar content using UV-Vis spectrophotometry, alcohol content using gas chromatography, total LAB using the plate count agar method, and antibacterial activity using the disc diffusion method. Based on ANOVA results, the variation in kefir grain concentration showed a statistically significant difference (P-value < 0.05) in total acidity, alcohol content. Sugar content ranged from 0,4173% to 0,4632%. Total LAB ranged from 19 to 55 × 10⁶ CFU/mL, and the highest antibacterial activity was observed in kefir with a 6% grain concentration, producing an inhibition zone of 5.99 mm.
| Item Type: | Thesis (Skripsi) |
|---|---|
| Additional Information: | [No.Panggil: 2110212036] [Pembimbing: Dhigna Luthfiyani Citra Pradana] [Penguji 1: Via Rifkia] [Penguji 2: Eldiza Puji Rahmi] |
| Uncontrolled Keywords: | Antibacterial activity, kefir characteristics, Shigella dysenteriae, young coconut water kefir |
| Subjects: | Q Science > QR Microbiology R Medicine > R Medicine (General) R Medicine > RM Therapeutics. Pharmacology |
| Divisions: | Fakultas Kedokteran > Program Studi Farmasi (S1) |
| Depositing User: | NOVALIANTI PUTRI |
| Date Deposited: | 15 Aug 2025 08:14 |
| Last Modified: | 15 Aug 2025 08:14 |
| URI: | http://repository.upnvj.ac.id/id/eprint/38188 |
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