Water extracts prepared from SGT have significantly higher
antioxidant activity and are more effective at promoting the
growth of defined (pure cultures) or undefined (mixed cultures)
cultures of lactobacilli and bifidobacteria than CGT. The higher
TPC and higher concentration of organic selenium in SGT or the
combined effects of both may underlie this superiority of SGT over
CGT. It would appear that the difference in the amount of selenium
had a major effect. The chemical identity of the selenium in SGT remains
unknown. Further studies are needed to identify the form of