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This research aimed to evaluate the effect of yellow mombin (Spondias mombin L.) juice as a marinade liquid on the quality properties of Boston butt pork during refrigerated storage. Yellow mombin juice was used as a marinade liquid at different concentrations: 0% (C0), 50% (C50), 75% (C75), and 100% (C100) in Boston butt pork samples which were analyzed for technological properties, proximate composition, and sensory characteristics on day 0 of storage. In addition, the pH, lipid oxidation, textural, and microbiological analyzes were carried out during refrigerated storage for 21 days. The results showed that the pH of the marinated samples was affected by yellow mombin juice (P < 0.05), with final values of 4.65 (C50), 4.56 (C75), and 4.39 (C100). Regarding the texture properties, C75 and C100 had the lowest values for hardness during storage. In addition, C100 had the lowest total aerobic mesophilic (5.69 log CFU g−1), total aerobic psychrophilic (7.10 log CFU g−1), and Enterobacteriaceae (5.30 log CFU g−1) counts at the end of storage. Regarding sensory properties, samples C50 and C75 were the best-rated marinated samples regarding overall acceptability and purchase intention. Therefore, the use of 75% yellow mombin juice (C75) as a marinade liquid could be a viable alternative for marinating Boston butt pork. • Three levels of yellow mombin juice as marination liquid (50%, 75%, and 100%). • There was no impact on technological properties of Boston butt pork meat. • Marinated pork meat had higher shelf life. • Lower pH values and softer texture on marinated pork meat. • The use of 75% of yellow mombin juice to marinated pork meat appeared to be the best alternative. [ABSTRACT FROM AUTHOR]