鲜切菠菜消毒不足会带来重大健康风险,以及气味等潜在问题,颜色变化,和软化在短期储存。为了应对这些挑战,硼酸溶液被用作氯洗的替代品,已知会产生有毒化合物。在各种浓度中,1%硼酸表现出最有效的微生物灭活作用,导致嗜温需氧菌总量大幅减少,总酵母和霉菌,肠杆菌科计数,减少1.64、1.38和1.77日志,分别。此外,用这种溶液洗涤菠菜叶1分钟,保持质量参数,具有增强的抗氧化活性(55.26mgkg-1Trolox当量),总酚含量增加(1214.06mgkg-1没食子酸当量),叶绿素a的保留(839.16mgkg-1),叶绿素b(539.61mgkg-1)和抗坏血酸含量(264.72mgkg-1)。穿刺强度(1.81N)和穿刺距离(52.78mm)等机械性能也显示出良好的结果,最佳水分含量为89.81%。值得注意的是,处理后菠菜叶片中的残留硼酸含量最低(1252.49mgkg-1),洗涤水中的残留硼酸含量最高(53.88mgkg-1)。扫描电子显微镜图像显示保持组织完整性,而亨特实验室的读数表明洗涤后颜色变化最小。此外,感官评估和各种理化分析进一步支持了硼酸洗涤的功效。因此,用1%硼酸溶液洗涤菠菜叶1分钟,在多个质量参数中都取得了良好的结果。这些发现表明,硼酸作为一种安全有效的替代消毒剂在鲜切农产品行业的潜力,强调其对食品安全和质量的实际影响。未来的研究应该集中在探索长期效果和优化洗涤方案,以实现更广泛的应用。
Insufficient disinfection of fresh-cut
spinach poses significant health risks, along with potential issues like odor, color changes, and softening during short-term storage. To address these challenges, boric acid solutions were explored as an alternative to chlorine washes, which are known to produce toxic compounds. Among various concentrations, 1 % boric acid exhibited the most effective microbial inactivation, leading to substantial reductions in total mesophilic aerobic bacteria, total yeast and mold, and Enterobacteriaceae counts, with reductions of 1.64, 1.38, and 1.77 logs, respectively. Additionally, washing
spinach leaves with this solution for 1 min maintained quality parameters, with enhanced antioxidant activity (55.26 mg kg-1 Trolox equivalent), increased total phenolic content (1214.06 mg kg-1 gallic acid equivalent), retention of chlorophyll a (839.16 mg kg-1), chlorophyll b (539.61 mg kg-1) and ascorbic acid content (264.72 mg kg-1). Mechanical properties such as puncture strength (1.81 N) and puncture distance (52.78 mm) also showed favorable outcomes, alongside optimal moisture content at 89.81 %. Notably, residual boric acid content was lowest in
spinach leaves (1252.49 mg kg-1) and highest in the wash water (53.88 mg kg-1) after treatment. Scanning electron microscopy images demonstrated maintained tissue integrity, while Hunter Lab readings indicated minimal color changes post-washing. Additionally, sensory evaluations and various physicochemical analyses further supported the efficacy of boric acid washing. Consequently, washing
spinach leaves with a 1 % boric acid solution for 1 min yielded favorable results across multiple quality parameters. These findings suggest the potential of boric acid as a safe and effective alternative disinfectant in the fresh-cut produce industry, highlighting its practical implications for food safety and quality. Future research should focus on exploring long-term effects and optimizing washing protocols for broader applications.