EVALUASI AKTIVITAS DAYA HAMBAT KEFIR UBI UNGU TERHADAP BAKTERI PATOGEN SELAMA PENYIMPANAN. STAP [Internet]. 2022 Jun. 29 [cited 2025 Oct. 29];9:356. Available from: https://jnp.fapet.unsoed.ac.id/index.php/psv/article/view/932