A. Peter Amala Sujith and  T.V. Hymavathi and  P. Yasoda Devi,  Supercritical Fluid Extraction of Lutein Esters from Marigold Flowers and their Hydrolysis by Improved Saponification and Enzyme Biocatalysis.   journal   = {International Journal of Nutrition and Food Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2010, vol. 37(1). 74 - 83
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/4068.