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		Purba, W., 		Syahputri, Y., 		Lubis, N., 		Nasution, G., 		Setiyawati, D., & 		Sembiring, F.
(2025).
 Evaluation of the potential of purple eggplant peel extract (Solanum melongena L.) as a pH indicator for bacterial growth.
<em>Jurnal Biologi Udayana, 29</em>(1), 1-9.
doi:10.24843/JBIOUNUD.2025.v29.i01.p01