Manufacturing method of optically active d type lactic acid using byproducts prepared from rice polishing process
AssigneeHyundai Motor Company
InventorsChae Hwan Hong, Do Suck Han
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Abstract
Disclosed is a method for manufacturing D type lactic acid wherein byproducts (e.g., rice bran and pulverized rice) obtained during a rice polishing process are saccharified by using α-amylase and amyloglucosidase and then fermented by a microorganism, Sporolactobacillus inulinus. According to the method, byproducts generated during a rice polishing process can be used to produce D type lactic acid that can be used as a material for the manufacture of D-type polylactic acid, which is useful for the manufacture of a stereo complex of polylactic acid, a suitable plant-derived material for the manufacture of materials interior and exterior parts of vehicles.
Claims4
A method of manufacturing D type lactic acid comprising:
- preparing a rice slurry by pulverizing byproducts obtained from rice polishing process;
- preparing a first mixture solution by adding α-amylase to said rice slurry and conducting an enzyme reaction;
- preparing a second mixture solution by adding amyloglucosidase to said first mixture solution and conducting an enzyme reaction;
- apoptosizing the enzyme activity of said second mixture solution and separating hydrolysate therefrom;
- and
- inoculating said hydrolysate with Sporolactobacillus inulinus and conducting fermentation.
Dependencies are inferred from the claim text.