what all standards are needed to quantify and analyze the composition with a proper method fie for the mobile phase to run the sample ?
Swagat Mohanty , you can use RI detector for HPLC for your purpose. Otherwise, you should do a modification of your polysaccharide.
Kindly check https://www.researchgate.net/publication/26260984_Simple_HPLC_Method_for_Resolution_of_Curcuminoids_with_Antioxidant_Potential
Also check https://www.researchgate.net/publication/11315401_Improved_HPLC_Method_for_the_Determination_of_Curcumin_Demethoxycurcumin_and_Bisdemethoxycurcumin
And https://www.sciencedirect.com/science/article/pii/S131901642030075X
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