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Summary: There is significant economic potential in reusing passion fruit peel as an industrial by‐product, and there has been enthusiasm for creating new goat milk yoghurt (GMY) products. Consequently, a thorough investigation regarding the impact of passion fruit peel on fermented GMY is crucial for the advancement of new food products. This study aimed to assess the impact of passion fruit peel powder (PFPP) on the quality characteristics, sensory properties, and antioxidant activity of GMY during storage. Six GMY formulations were prepared by varying the amount of PFPP addition (0%, 0.5%, 1.0%, 1.5%, 2.0%, and 2.5%). The results revealed that several characteristics of GMY were positively affected by the addition of PFPP, including the acidity, rheology, and texture property of the samples. It was observed that GMY with 1.0% addition of PFPP exhibited improved taste, flavour, and colour. Additionally, the total phenols, flavonoids, anthocyanin, and antioxidant properties of GMY with PFPP were significantly increased across all levels. The results obtained from this study demonstrate that PFPP has the potential to be utilised in GMY to optimise the benefits of products with high antioxidant activity. [ABSTRACT FROM AUTHOR]