Methods for the preparation of nanosized nutrient formulations for enhanced absorption of nutritional agents. The methods include the complexation of cyclodextrin with carotenoids and incorporation of the complexes into the nutritional supplements without intermediate collection, isolation, and drying steps.製備增強營養劑之吸收的奈米級營養調配物的方法。該等方法包含將環糊精與類胡蘿蔔素複合,及使該複合物在沒有中間的收集、分離及乾燥步驟下併入營養補充品中。