成功由TNG66甘諸中萃取ß-carotene'使用溶劑為acetone溶液，萃取溫度為室溫(250C)，acetone的濃度建議高於75% ;萃取製程含有兩個變數分別是acetone濃度與萃取時間，根據反應曲面(RSM)的實驗設計法，實驗結果顯示acetone濃度對萃取液的吸光值有顯著的影響，而建議的最適化萃取條件為90%acetone與萃取時間30 min ;和單次萃取相比，多次萃取可以提高戶-carotene的萃取量，雖然多次萃取可以將萃取率提升到80%以上，但萃取次數的選擇必須搭配經濟效孟分析而決定。TNG66甘諸含有ß-carotene及其他的carotene類似物，但以all-transß-carotene為最多。

-carotene was successfully extracted from TNG66 sweet potatoes using acetone as the extraction solvent. The extraction temperature was 25.c. The most effective acetone concentration was higher than 75%. Two variables, acetone concentration and extraction time, were considered as major parameters of the -carotene extraction process. Based on response surface methodology (RSM) results, the absorbance of the -carotene extraction solution was significantly affected by the acetone concentration. The optimal operating conditions were the use of 90% acetone and an extraction time of 30 minutes. Increasing the extraction number improved the total amount of extracted -carotene. Although the - carotene extraction rate could be increased to above 80% after multiple extractions, the determination of the extraction number should be compensated with the result of economical analysis. TNG66 sweet potatoes contain significant amounts of -carotene and carotene derivatives. The major component was the all-trans -carotene