Nigerian scientists have warned against the use of chemicals such as formalin, sodium benzoate in excessive amounts, and other unapproved preserva­tives, saying that the substances are unsafe and not ...

By the late 19th century, it would become less putrid, as manufacturers added chemical preservatives to slow decomposition in the bottle. But the real change—the invention of modern ketchup ...

Wiley organized volunteers for human trials to test the effects of chemical food preservatives. For free food and five dollars a month, 12 healthy young men became test subjects.

Co-author Zhenyu Tang, CTO at Henning Chemical (Shanghai) Co., Ltd, says, “The preservatives presented in this review, at normal use levels, kill the microorganisms rather than inhibiting their ...

Chemical analysis was conducted by using a ... and measuring the pH of each solution. The preservative effectiveness of the solutions was tested by the recovery of inoculations of compendial ...