I extracted horse gram (soaked for 3 days in EtOH, H2O , HCl), with consequent evaporation and lyophilisation. Initially the product (tar like in consistency and colour) was soluble in DMSO but after a week (stored at room temp) I'm finding it highly difficult to solubilise it. Any suggestions?
B.k Chakravarthy
Reduce or totally avoid HCl in soaking mixture to devoid of tar color.
Lyophilise more diluted extract rather highly concentrated extract, you will get interesting results for better solubility.
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