Antibacterial evaluation of plants extracts against ampicillin-resistant Escherichia coli (E. coli) by microcalorimetry and principal component analysis

The metabolic curve of drug-resistant E. coli at 37 °C in the absence of any intervention: the P–t curve (the lower curve) and the corresponding Ln P–t curve (the upper curve). The straight line k is the linear fitting results of the corresponding phas