Work

Sustainable postharvest preservation of mangoes using antagonistic bacterial pellets through regulation of reactive oxygen species metabolism

Year: 2026

Type: article

Abstract: Introduction Losses caused by diseases after harvesting can reach 30%–60%, severely restricting the sustainable development of the mango industry. This study investigated the effects of different antagonistic bacterial pellets on postharvest mango preservation and the regulation of reactive oxygen species (ROS) metabolism. Methods Mangoes were sprayed separately with bacterial suspensions of four antagonistic pellets: GsBa-1, GHY-1, JQ-1, and GHY-3. Results The results showed that all four antagonistic bacterial pellets enhanced the postharvest preservation of mangoes to varying degrees, with JQ-1 exhibiting the most significant effect. On the 24th day, the mangoes in the JQ-1 treatment group showed significantly higher firmness and titratable acidity content than those in the other groups. The malondialdehyde (MDA), hydrogen peroxide (H 2 O 2 ), and superoxide anion radical (O 2 −· ) contents were reduced by 30.9, 31.2, and 46.9%, respectively, compared with those of the CK. The activities of catalase (CAT), peroxidase (POD), and glutathione peroxidase (GPx), and glutathione (GSH) content increased by 38.5, 75.2, 68.9, and 66.9%, respectively, compared with the CK. Discussion JQ-1 treatment effectively reduced the accumulation of reactive oxygen species (ROS) and delayed the decline in the activities of key antioxidant enzymes, including SOD, CAT, APX and POD. This treatment not only preserved the quality and nutritional value of mangoes but also significantly extended their storage life, providing a scientific basis and feasible approach for the development of new mango preservation technologies.

Source: Frontiers in Sustainable Food Systems

DOI: 10.3389/fsufs.2026.1877440