This is microstructure of the commercial fried durian chips. From the scanning electron micrographs. The microstructure of the cross section of the durian chips was examined to explore the effect of pretreatment methods and microwave power levels on the samples. , the microwave-dried chips had both uniform pore size and pore distribution, because during the microwave vacuum drying there was rapid and extensive vaporization. As a result, vapor could increase the pressure inside the chips, as well as enhancing the porosity