In research that eases concerns about stevia's stability, the scientists studied clear glass containers of cola and lemon-lime sodas containing the two major naturally sweet components in stevia. After exposing the beverages to sunlight for one week, they found no significant degradation in either component of the natural sweetener. MTS
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"Photostability of Rebaudioside A and Stevioside in Beverages"
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Indra Prakash, Ph.D.
The Coca-Cola Company
Atlanta, Georgia 30313
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Toward a fast, life-saving test for identifying the purity of heroin
Scientists in Spain are reporting an advance toward a new method for determining the purity of heroin that could save lives by allowing investigators to quickly identify impure and more toxic forms of the drug being sold on the street. Unlike conventional tests, it does not destroy the original drug sample, according to their report. It is scheduled for the Oct. 1 issue of ACS' Analytical Chemistry, a semi-monthly journal.
In the new study, Salvador Garrigues and colleagues point out that the purity of heroin can vary widely, since pushers often mix it with chalk, flour, or other "cutting agents." Because heroin users do not know the exact purity of the drug, they are more at risk for overdose and even death. Conventional tests for determining the purity of street heroin involve destructive and time-consuming sample preparation, the scientists say.
They studied 31 illicit drug samples from Spai
|Contact: Michael Bernstein|
American Chemical Society