关键词: 葡萄籽油, 超声, 复合溶剂, 响应面

Abstract:

Cabernet-Sauvignon grape seeds collected from Turpan in Xinjiang were used as the subjects to extract
grape seed oil through ultrasonic-assisted extraction. A mixture of hexane and petroleum ether at a ratio of 7:3 (V/V) was
considered as the best extraction solvent. Single factor tests were used to explore solid-liquid ratio, ultrasonic extraction
temperature, ultrasonic extraction power and ultrasonic extraction time. Response surface methodology (RSM) was applied
to optimize the extraction conditions. A maximum extraction rate of grape seed oil was achieved. The optimal extraction
conditions were solid-liquid ratio of 1:12 (g/mL), extraction duration of 35.5 min, ultrasonic power of 290 W, and extraction
temperature of 51 ℃. Under the optimal extraction conditions, the extraction rate of grape seed oil was up to 19.19%, and an
improvement in the measured physicochemical indexes was achieved compared with the grape seed oil from solvent extraction.

Key words: grape seed oil, ultrasonic-assisted extraction, mixture solvent, response surface methodology