Zhejiang Medicine has patented a method for extracting lutein crystals from vegetable oil resin, using lipase and alcohol solvents. The process is eco-friendly, with high purity and yield. The method involves hydrolysis, filtration, recrystallization, and drying steps, ensuring selectivity and efficiency for industrial production. 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 April 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, the temperature for dissolving the lutein crystal filter cake, and the type of non-polar organic solvent used. Additionally, the patent mentions the sources of lutein extract, the percentage of lutein content in the solution, the crystallization temperature, and the suitability of the lutein crystals for nutritional supplements and food additives in different forms. These specific details provide a comprehensive guide for efficiently extracting and isolating lutein crystals for various applications in the food and supplement industry.
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