Zhejiang Medicine has patented a method for extracting high-purity lutein crystals from vegetable oil resin. The process involves enzymatic hydrolysis, filtration, recrystallization, and drying, resulting in a selective, efficient, and environmentally friendly production method suitable for industrial scale. GlobalData’s report on Zhejiang Medicine gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Zhejiang Medicine, Cancer treatment biomarkers was a key innovation area identified from patents. Zhejiang Medicine's grant share as of February 2024 was 46%. Grant share is based on the ratio of number of grants to total number of patents.
A recently granted patent (Publication Number: US11920175B2) outlines a method for extracting and isolating lutein crystals from vegetable oil resin containing lutein diester. The process involves several steps, including dissolving a lipase into deionized water to form an enzyme solution, dissolving a lutein extract into an alcohol solvent, performing a hydrolysis reaction, filtering the lutein solution, washing the lutein crystal filter cake, recrystallizing the crystals, and isolating them through vacuum drying or freeze drying. The final lutein crystals obtained have a dry weight loss of less than 5%.
The method detailed in the patent specifies various parameters such as the type of alcohol solvent, the volume of deionized water, the reaction time for hydrolysis, and the temperature ranges for different stages of the process. Additionally, the patent mentions the sources of lutein extract, the types of non-polar organic solvents used, and the potential applications of the lutein crystals in nutritional supplements and food additives. The patent provides a comprehensive guide for efficiently extracting and isolating lutein crystals, ensuring high purity and minimal dry weight loss in the final product, making it suitable for various commercial uses.
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