NEW PUBLICATION – Rhamnolipid Adsorption in Soil

Rhamnolipids have been described as an effective way to kill zoospores in solution.  Yet, zoospores are commonly associated with plant pathogens and are normally found in wet soil.  The interaction between the soil and rhamnolipid is a critical factor to establishing the effectiveness and dosing required to prevent plant-fungal attack and spread.

In this article, Dr. Dashtbozorg, J. Kohl, and Dr. Ju discuss the interactions between rhamnolipid and soil.  Eight (8) different rhamnolipid structures were tested at pH 4.5 and 6.5.  Lower pH favored rhl-soil adsorption.  It was found that less hydrophobic rhamnolipid forms preferentially adsorbed onto the soil.  A complete description of the Freundlich isotherm fitting, HPLC-MS-ELSD methods, and aggregate formation can be found in the full article in the  Journal of Agricultural and Food Chemistry. 

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