Furthermore , five millilitres of the mushroom extract was found to be more effective than addition of a vitamin c salt at a level of 500 ppm or vitamin e at the same levels .
此外，添加5毫升金针菇提取物比在500ppm水平下添加维生素c或维生素e来得更有效。
A canadian study previously showed that drinking 350 millilitres , or just one can of soda , a day lowers the ph of the esophagus to less than four for 53 minutes .
If the bacteria behaved in the same way in a litre of culture medium as they did in the 25 millilitres of medium used in the experiment , they would make just over 900 ml of hydrogen in 48 hours - the time taken for the experiment .
