Assessment of Technical and Management Practice Gaps in Controlling Microbial Hazards in Fresh Vegetables among Small-Medium Retailers in China

The microbial integrity of fresh vegetables is critically challenged at the retail stage, particularly within small-medium enterprises (SMEs) that lack sophisticated control systems. While extensive research focuses on upstream supply chain controls, scientific understanding of post-harvest handling practices and their impact on microbial quality at the SME retail level remains limited. This study bridges this gap by conducting a nationwide cross-sectional investigation of 115 Chinese vegetable retailers. Using a semi-structured questionnaire and Importance-Performance Analysis (IPA), we quantified retailer perceptions of contamination sources and control challenges. Key findings identify mechanical damage during handling as an important but least manageable factor precipitating microbial decay. Statistical analyses (T-test, ANOVA) further revealed that the efficacy of microbial safety management is significantly influenced by retailer size, operational types, and the completeness of the safety management system. The IPA matrix prioritizes high-impact, low-performance areas requiring immediate intervention. The results underscore a critical disconnect between existing food safety protocols and practical implementation in SMEs. While limited by its reliance on self-reported perception data and geographic scope, this study provides a scientific basis for targeting technological interventions, such as improved packaging, gentle handling equipment, preservation equipment, smart inventory systems, and cold-chain optimization, tailored to the SME retail environment, offering strategies to mitigate microbial risks and reduce spoilage, with global implications for perishable food supply chains.