The efficacy of plant-based antimicrobials against Salmonella Newport and Listeria monocytogenes on melon rinds was evaluated. Four cantaloupe and 3 honeydew melon varieties grown in Georgia, Arizona, Texas, North Carolina, Indiana and California were tested. Melon rinds (10 g pieces) were inoculated with 5–6 log CFU/10 g rind of S. Newport or L. monocytogenes. Samples were then immersed in 5 % olive extract or 0.5 % oregano oil antimicrobial solution and gently agitated for 2 min. Samples were stored at 4 °C and surviving populations of both bacteria were enumerated at days 0 and 3. Plant-based antimicrobials reduced S. Newport and L. monocytogenes population on all rind samples, regardless of the melon types, varieties or growing locations. Compared to the control, antimicrobial treatments caused up to 3.6 and 4.0 log reductions in populations of Salmonella and L. monocytogenes, respectively. In most cases, plant-based antimicrobial treatments reduced pathogen populations to below the detection limit (1 log CFU/g) at day 3. In general, oregano oil had better antimicrobial activity than olive extract and the antimicrobial treatments were more effective on Salmonella than on L. monocytogenes. The plant-based antimicrobial treatments exhibited better microbial reductions on honeydews than on cantaloupes. These antimicrobials could potentially be used as sanitizers for decontaminating melons.

评估了基于植物的抗菌剂对瓜皮上的纽波特沙门氏菌和单核细胞增生李斯特氏菌的功效。测试了在佐治亚州、亚利桑那州、德克萨斯州、北卡罗来纳州、印第安纳州和加利福尼亚州种植的四种哈密瓜和 3 种蜜瓜品种。用 5-6 log CFU/10 克S皮接种瓜皮（10 克）。纽波特或L。单核细胞增生症。然后将样品浸入 5% 橄榄提取物或 0.5% 牛至油抗微生物溶液中，并轻轻搅拌 2 分钟。将样品储存在 4 °C 下，并在第 0 天和第 3 天对两种细菌的​​存活种群进行计数。基于植物的抗菌剂降低了S。新港和L. 菌等无论甜瓜类型、品种或种植地点如何，所有果皮样本的种群数量。与对照相比，抗菌处理导致沙门氏菌和L种群减少多达 3.6 和 4.0 log 。分别为单核细胞增生症。在大多数情况下，基于植物的抗菌处理在第 3 天将病原体种群减少到检测极限以下 (1 log CFU/g)。总的来说，牛至油比橄榄提取物具有更好的抗菌活性，并且抗菌处理对沙门氏菌的作用比对沙门氏菌更有效。对单增李斯特菌。与哈密瓜相比，基于植物的抗菌处理对蜜露的微生物减少效果更好。这些抗菌剂有可能用作消毒瓜类的消毒剂。