Dried Goldenseal (IMAGE) Penn State Caption Researchers determined that there is a relationship between drying temperature and alkaloid content in the rhizome and roots of goldenseal like these. Lower drying temperatures enhance key antibacterial properties. Credit Eric Burkhart/Penn State Usage Restrictions non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.