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Ultrasound‐assisted extraction of phenolic antioxidants from Acacia confusa flowers and buds
Author(s) -
Tung Yu Tang,
Chang Wei Chun,
Chen Ping Sheng,
Chang Tzu Cheng,
Chang Shang Tzen
Publication year - 2011
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201000820
Subject(s) - quercitrin , gallic acid , extraction (chemistry) , chromatography , kaempferol , chemistry , traditional medicine , botany , polyphenol , bark (sound) , flavonoid , antioxidant , biology , biochemistry , medicine , ecology
Acacia confusa Merr. (Leguminosae), a species native to Taiwan, is widely distributed on the hills and lowlands of Taiwan, and has been used in traditional medicines. In this study, the application of ultrasound‐assisted extraction was used to extract the phenolic compounds from A. confusa flowers and buds for the first time. Among the extraction methods, it can significantly enhance the contents of phenolic compounds and antioxidant activities in A. confusa flower and bud extracts using ultrasound‐assisted extraction (10 min×12 times). Considering both the solvent consumption and the time needed for extraction, ultrasound‐assisted extraction was found to be the most practical approach for the rapid and efficient extraction of bioactive phenolic constituents. In addition, gallic acid, myricitrin‐3‐rhamnoside, quercitrin‐3‐rhamnoside, europetin‐3‐rhamnoside, kaempferol‐3‐rhamnoside, rhamnetin‐3‐glucoside, and rhamnetin‐3‐rhamnoside were also quantified in different extracts by RP‐HPLC. It is clear that ultrasound‐assisted extraction is an efficient method for extracting phenolic compounds from A. confusa flowers and buds.