请看这段ZT，看来大部分是没有防腐剂的

Modern ketchup emerged in the early years of the 20th century, out of a debate over the use of sodium benzoate as a preservative in condiments [1] . Harvey W. Wiley, the "father" of the Food and Drug Administration in the U.S., challenged the safety of benzoate. In response, entrepreneurs, particularly Henry J. Heinz, pursued an alternative recipe that eliminated the need for that preservative.

所有跟帖： 

• 具体说是多加醋，就不需要防腐剂了 -dudaan- ♂ (0 bytes) () 08/31/2009 postreply 19:31:12