(Shanghai, China). A Minolta spectrophotometer (CR-400, Konica Minolta Sensing, Tokyo, Japan). Microtrac Bluewave S3500 SIA (Microotrac Inc. FL., USA) with Microtrac Flex 10.5.4 software
(Shanghai, China). A Minolta spectrophotometer (CR-400, Konica Minolta Sensing, Tokyo, Japan). Microtrac Bluewave S3500 SIA (Microotrac Inc. FL., USA) with Microtrac Flex 10.5.4 software