本研究以雙水相系統(Aqueous two phase solvent system)萃取番茄醬中的茄紅素(lycopene)。雙水相系統是將兩種不同的高分子聚合物混合，或是混合高濃度的鹽與有機溶液使其形成兩相。由於不同的化合物表面性質不同，因此兩相間會有不同分配情形，根據其分配係數的不同予以分離。
本實驗分別使用5%~25%的2-propanol 與10%~50% ethanol溶液，鹽類以K2CO3、K3PO4、K2HPO4三種不同鹽類以濃度40%~70%為主。分別比較萃取濃度與分配係數。發現5% 2-propanol在三種鹽類中均不會分相，而萃取濃度最好的鹽類分別為K3PO4>K2HPO4>K2CO3，其中以70%的K3PO4與20% 2-propanol及30% ethanol有最高萃取濃度。而2-propanol萃取濃度皆比ethanol來的高。實驗並與傳統索氏萃取法比較，其產率較傳統索氏萃取法低。

The objective of is the extraction of lycopene in tomatopaste using aqueous two phase system. The conuentional aqueous two phase system mixed with high moleculas weigls polymers, and inorganic in agueous solution to form two phases of different chemicals are. Since phases provide compoundsurface properting are different, two phase will provide different environment and the mixed can be separated basedontheir partition.
Different corcentrations of 2-propanol and ethanol agueous, and different salt used for phase separation in this sthdies, 70% K3PO4 20%-2-propanol-H20 and 70% K3PO4 30%-ethanol-H20.The results showed that the optimal condition for lycopene extraction is 2-propanol-K3PO4 syrfcm. However, this extraction of lycopene by ethanol-salt solution system was lower than traditional soxhlet method.

目錄
中文摘要
英文摘要(Abstract)
頁次
壹、前言................................................1
貳、文獻整理
一、番茄紅素簡介...................................3
二、番茄紅素功能...................................7
(一)抗氧化能力
(二)生理功能與抗癌
三、吸收代謝與組織分佈..............................12
四、食品加工與分析過程中的安定性....................14
五、雙水相系統......................................17
(一)簡介
(二)理論
　　　　(三)相系統的性質
(四)影響分配係數的變因
(五)雙水相系統的優點
(六)雙水相系統的應用
　　　　(七)雙水相技術最新發展

參、材料與方法
一、實驗材料.......................................30
二、實驗方法.......................................31
肆、結果與討論
一、萃取溶液為2-propanol...........................36
二、萃取溶液為ethanol..............................39
伍、結論................................................46
陸、參考文獻............................................47
柒、實驗圖表............................................55

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