Butylated hydroxyanisole (BHA) has been bonded to porous glass beads, thus utilizing its functional characteristics while preventing it from entering the final food products. The glass-bonded BHA has been tested in lard and found to have only one percent of the free BHA activity, which can be attributed to stereochemical shielding effects. Evidence is presented strongly indicating that the observed activity resulted from BHA bonded to glass, although activity resulting from BHA leached from the glass could not be conclusively ruled out.
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