Antibiotic residues in animal-derived food products such as milk pose a potential health risk to consumers. A portable antimicrobial screening test plate was fabricated particularly for on-farm testing of milk. A cold-water soluble compound gelling agent composed of guar gum (GG) and konjac glucomannan (KG) was prepared and its properties were optimized for enhancing performance of the test plate. A ratio of 4:6 (GG:KG) showed improved gel strength, cohesiveness, transmittance, and water diffusion of the compound gel. Microbial colony number and size were also increased. The test plate displayed a minimum inhibition concentration of 4 µg/L penicillin G and clearer zone of inhibition. Detection time was also significantly reduced to approximately 9–15 h compared to the conventional agar plate method. The plastic film test plate with optimized compound gel demonstrated tremendous potential for detection of antibiotics in milk.

中文翻译：

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青霉素G便携式牛奶农场抗生素残留微生物试验板的研制。

动物性食品（例如牛奶）中的抗生素残留会对消费者构成潜在的健康风险。制造了一种便携式抗菌筛查测试板，专门用于农场牛奶的现场测试。制备了由瓜尔胶（GG）和魔芋葡甘露聚糖（KG）组成的冷水溶性复合胶凝剂，并对其性能进行了优化，以增强测试板的性能。4：6（GG：KG）的比例显示出复合凝胶的改善的凝胶强度，内聚性，透射率和水扩散性。微生物菌落的数量和大小也增加了。该测试板显示的最小抑菌浓度为4 µg / L青霉素G，抑菌区更清晰。与传统的琼脂平板法相比，检测时间也显着减少至大约9-15小时。