Simultaneous extraction of oil and tea saponin from Camellia oleifera Abel. seeds under subcritical water conditions

Camellia oleifera Abel. (Camellia oleifera) seeds oil and tea saponin were simultaneously extracted under subcritical water extraction (SWE) conditions. A response surface methodology (RSM) was used for optimizing the SWE process by varying independent variables temperature (×1: 110–150 °C), extract...

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Published inFuel processing technology Vol. 174; pp. 88 - 94
Main Authors Wu, Hong, Li, Changzhu, Li, Zhenmei, Liu, Rukuan, Zhang, Aihua, Xiao, Zhihong, Ma, Li, Li, Jilie, Deng, Shuguang
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.06.2018
Elsevier Science Ltd
Subjects
Camellia oleifera
Cold pressing
Independent variables
Oil
Oil properties
Oxidation
Oxidation resistance
Response surface methodology
Seeds
Simultaneous extraction
Studies
Subcritical water extraction
Tea saponin
Camellia oleifera
Simultaneous extraction
Oil properties
Subcritical water extraction
Tea saponin
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Summary:Camellia oleifera Abel. (Camellia oleifera) seeds oil and tea saponin were simultaneously extracted under subcritical water extraction (SWE) conditions. A response surface methodology (RSM) was used for optimizing the SWE process by varying independent variables temperature (×1: 110–150 °C), extraction time (×2: 20–40 min) and solvent to material ratios (×3: 5:1–15:1 mL/g). The highest extraction yield of oil is 94.07% at the condition of 133.59 °C, 32.03 min, 10.79 mL/g with the tea saponin yield 71.38%, and the highest extraction yield of tea saponin is 74.21% with the oil yield 91.27% of the total content at the condition of 121.11 °C, 32.07 min, 8.33 mL/g. Analytical results showed that extracted oil has a similar fatty acid profile and quality as those of the cold Soxhlet extraction(SE) oils, and the oils extracted by SWE were even more resistant to lipid oxidation and more abundant valuable bioactive compounds than those of the cold-pressed(CP) oils. Treatment procedure of Camellia oleifera Abel. seeds with SWE. [Display omitted] •Simultaneous extraction of oil and tea saponin from Camellia oleosa seeds by SWE•Optimization of the subcritical water extraction process by RSM.•Oil extraction yield of 94.07% and tea saponin yield of is 74.21% at optimal conditions•Similar fatty acid profiles and better anti-oxidation stability of the oil obtained by SWE
ISSN:0378-3820
1873-7188
DOI:10.1016/j.fuproc.2018.02.014