Science news articles about 'chemical preservatives'

... ' activity, which the researchers show can be applied to tissues that have been chemically preserved instead of frozen. This technical triumph ... requirements — samples must be frozen, not preserved, or "fixed," in the chemical formalin. An international team of researchers ...

... wine, which is made without the benefit of such chemical preservatives as sulfites. Preservatives can be used in certified wine. "Organic wine earned its bad reputation in the '70s and '80s ...

... by smoking, curing or salting, or with the addition of chemical preservatives; examples include bacon, salami, sausages ... that more research is needed into which factors (especially salt and other preservatives) in meats are most important for health effects. Current ...

... also maintained sterility in the applicator bottle without the use of the chemical preservatives, according to the study, which will be published Nov. 15 ... and eye drops. Scientific evidence has shown that the preservatives used, such as benzalkonium chloride and phenylcarbinol, can damage human ...

... , health officials, and manufacturers already know that a chemical preservative found in some products, including cosmetics, is harmful to people and animals in high concentrations, but a new Brown ...