Abstract
The barbaloin content in 15 products containing aloe, a so-called health food, was examined. The stability of barbaloin in liquefied products and the elution rates from dried leaves and tea-bag style products infused in hot water were also investigated.The contents of barbaloin in granulated products, powdered products and dried leaves of aloe were 2.9-5.2, 5.0 and 3.7-4.2mg/g, respectively. The contents of barbaloin in liquefied products decreased to less than 50% after storage for a month in a cold, dark place, although the pH remained acidic. When dried leaves were infused in hot water, most of the barbaloin was eluted into the water.In the case of products containing large amounts of barbaloin, there is a possibility that 2-3 times the general standard intake of them might show a cathartic effect in comparison with the content of barbaloin in the official dose of pharmacopoeial aloe.
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