Abstract

This study was conducted with 12 commercial bamboo viscose, conventional rayon, cotton fibers, 4 bamboo species and 12 natural bamboo fiber (NBF) samples to test antibacterial activity against Staphylococcus aureus and Klebsiella pneumoniae. The accuracy and efficacy of test methods were investigated and modified for antibacterial assessment. While the spectrophotometric method was found to be less effective due to low bacterial reduction, the revised viable plate counting technique was consistent and effective for samples in fabric, fiber or powder form. Results revealed that only one viscose product showed antibacterial activity but the majority of the specimens from bamboo plant species and NBFs showed a quantifiable percentage reduction of bacteria against K. pneumoniae (8–95%) but had more modest results against S. aureus (3–50%). As the quantity of bacteria promoting compounds is lower than bacteria-killing compounds due to processing; NBFs showed higher reductions of bacteria than raw bamboo specimens.

摘要

本研究使用 12 种商业竹粘胶、常规人造丝、棉纤维、4 种竹种和 12 种天然竹纤维 (NBF) 样品进行，以测试对金黄色葡萄球菌和肺炎克雷伯菌的抗菌活性。研究并修改了用于抗菌评估的测试方法的准确性和有效性。虽然发现分光光度法由于细菌减少率低而效果较差，但修订后的活菌平板计数技术对于织物、纤维或粉末形式的样品是一致且有效的。结果显示，只有一种粘胶产品显示出抗菌活性，但来自竹类植物和 NBF 的大多数标本显示出可量化的细菌减少百分比肺炎克雷伯菌(8–95%) 但对金黄色葡萄球菌( S. aureus) (3–50%) 的结果较为温和。由于加工过程中促菌化合物的含量低于杀菌化合物；NBF 的细菌减少率高于生竹标本。