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Evaluation of the extraction efficiency of thermally labile bioactive compounds in Gastrodia elata Blume by pressurized hot water extraction and microwave-assisted extraction. Chin Chye Teo , Eng Shi Ong. Journal of Chromatography A , 1182 (2008) 34–40. Pressurized hot water extraction.
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Evaluation of the extraction efficiency of thermally labile bioactive compounds in Gastrodia elata Blume by pressurized hot water extraction and microwave-assisted extraction Chin Chye Teo , Eng Shi Ong Journal of Chromatography A, 1182 (2008) 34–40
Pressurized hot water extraction A schematic diagram of a self-assembled PHWE system.
結果 Fig. 1. Effect of different extraction temperatures on the recoveries of (A) GA and (B) VA by PHWE with flow rate: 1.5 ml/min for 50 min. Such a trend was not observed for VA in the same temperature range. The amount of GA extracted was increasing steadily from 60 to 120 °C.
Extraction rate increased with the flow rate of extraction fluid . Fig. 2.Effect of different flow rates on the recoveries of (A) GA and (B) VA by PHWE at extraction temperature: 120 ◦C for 50 min.
Table 1. Comparison of amount of GA and VA extracted from different batches of G. elata Blume using PHWE and heating under reflux with water as extraction fluid The amount of VA extracted was comparable to heating under reflux of different batches of medicinal plants. The higher yield at a higher applied temperature for GA.
HPLC 幫浦 層析管柱 注射閥 紫外光 偵測器 數據處 理系統 移動相儲瓶 廢液 記錄器 移動相儲瓶、高壓幫浦、注射閥、層析管柱C18 RP(25 cm×I.D 4.6 mm)或同級品。 紫外光偵測器(使用 270 nm)、數據處理系統或記錄器
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