Extraction of Essential Oil and Pigments from Curcuma longa [L.] by Steam Distillation and Extraction with Volatile Solvents

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• 作者：Anna Carolina C. M. Manzan ; Fabio S. Toniolo ; Eliane Bredow ; and Nanci P. Povh
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2003
• 出版时间：November 5, 2003
• 年：2003
• 卷：51
• 期：23
• 页码：6802 - 6807
• 全文大小：129K
• 年卷期：v.51,no.23(November 5, 2003)
• ISSN：1520-5118

文摘

Curcuma longa [Linn] (turmeric), of the Zingiberaceae family, has a great importance in the food,textile, and pharmaceutical industries. The aim of this work was to identify the best processingconditions to maximize the yields of essential oil and pigments, as well as their content of ar-turmerone,(ges/gifchars/alpha.gif" BORDER=0> and ges/gifchars/beta2.gif" BORDER=0 ALIGN="middle">)-turmerone, and the curcuminoids, respectively. Autoclave pressure and distillation timewere the variables studied for the steam distillation process. The highest yields of essential oil (0.46wt %) and pigment (0.16 wt %)-expressed as curcumin, demethoxycurcumin, and bisdemethoxycurcumin-were obtained at a pressure of 1.0 × 10⁵ Pa and a time of 2 h. On the other hand, with extraction byvolatile solvents, the best yield of essential oil (5.49 wt %) was obtained when using 0.175, 0.124,0.088 mm particles (Foust, A. S.; Wenzel, L. A.; Clump, C. W.; Maus, L.; Andersen, L. B. Princípiosdas Operações Unitárias; Editora Guanabara Dois S.A.: Rio de Janeiro, Brazil, 1982), at 40 ges/entities/deg.gif">C, and6 h of extraction. However, the best yield of pigment (7.98 wt %) was obtained under the sameconditions, except for the temperature (30 ges/entities/deg.gif">C).Keywords: Volatile solvents; steam distillation; Curcuma longa