ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Natural microflora, yeast and mold, E.coli, and Salmonella in fresh raspberry juice were taken as the research objects for discussing the sterilizing effect of UHP. It showed that the higher the pressure was, the better the sterilization effect would be; with increased holding pressure time，the lethal effect on these microorganisms became stronger. At room temperature (25℃) and with the pressure of 200MPa, E. coli was totally killed when the holding pressure time was 5min. At the pressure of 300MPa and holding pressure time of 15min, Salmonella was totally killed. At pressure of 400MPa and holding pressure time of 15min, mold and yeast were totally killed. When the pressure was 600MPa and the holding pressure time was 25min, the micro-organisms in the juice were not completely killed; however, the total number of colonies could be reduced below 10cfu/mL, which met the national food hygienic standard of China (NFHSC) criterion.