Keywords: THC, tetrahydrocurcumin; Na-CMC, sodium carboxymethylcellulose; DS, degree of substitution; PABA, p-aminobenzoic acid; PAH, p-aminohippuric acid; IBD, inflammatory bowel disease; NMP, 1-methyl-2-pyrrolidinone; EDCI, 1-ethyl-3-(3-dimethylaminopropyl) carbo