
Keywords: Rhubarb anthraquinones; Spontaneous nanoemulsification; Central composite design; Dissolution profile; Pharmacokineitics; aloe-emodin (PubChem CID: 10207); rhein (PubChem CID: 10168); emodin (PubChem CID: 3220); chrysophanol (PubChem CID: 10208); physci