PROCESSES FOR DEODORIZING RENEWABLE-SOURCED GLYCOLS

摘要

Processes are described for deodorizing a renewable source-based glycol product prepared from five and six-carbon sugars and sugar alcohols from biomass, including a distilled or otherwise purified glycol product meeting pharmaceutical grade purity requirements. In one embodiment, more acidic, higher odor profile materials are reacted with a weak base to form salts with a lower odor profile. In an alternate approach, odor-causing materials present in the renewable source-based glycol product are removed by liquid-liquid extraction.