Ultrasound-assisted extraction of geniposide from Gardenia jasminoides

Abstract

Fructus gardeniae (Zhizi), one of commonly-used traditional Chinese medicines, is derived from the ripe fruit of the evergreen shrub, Gardenia jasminoides Ellis, and is an ingredient of many traditional Chinese preparations, and has numerous pharmacological actions. Geniposide is the important bioactive element derived from F. gardeniae. This study established optimum conditions and method of ultrasound-assisted extraction for geniposide from F. gardeniae by exploring the different experimental parameters, such as type of solvent, ratio of solid/liquid, extraction temperature and extraction time. The data gained from this study is important to further extract and apply the geniposide and is also a significant reference to extract the bioactive compounds from plant materials by the ultrasound-assisted method.

Multivariate statistical analysis and optimization of ultrasound-assisted extraction of natural pigments from waste red beet stalks

“…3. There was a steady increase in the yield of pigment up to 38 min and it could be explained that, swelling and hydration of plant material could be accelerated by cavitation effect of the ultrasonic waves during the earlier period of extraction (Wang et al 2012). The asymmetric collapse of micro-bubbles near surfaces was also associated with microjets that could cause the disruption and good penetration of solvent (Vilkhu et al 2008) into the matrix (Sun and Tomkinson 2002) through diffusion which improves the washing out of pigment content from plant material to surrounding solvents and enhanced the extraction performance.…”

Optimization of Ultrasound-Assisted Extraction Procedure to Determine Antioxidant Capacity of Rapeseed Cultivars

“…Winter rapeseed cultivar specific surface areas and decrease yields of the extracted compounds (Wang et al 2012). For comparison, AhmadQasem et al (2013) observed that the increase in antioxidant capacity of the olive leaf extracts was almost negligible after 15 min of extraction, which indicates that continuous ultrasound application seems to have no effect on bioactive compounds.…”

Optimization for ultrasound-assisted extraction of polysaccharides with chemical composition and antioxidant activity from the Artemisia sphaerocephala Krasch seeds

“…This phenomenon could be explained due to the fact that ultrasound might induce acoustic cavitation and rupture of plant cells. The rupture of the bubbles will promote the interpenetration of the solvent into the plant cells to dissolve polysaccharides [25]. Prolonging extraction time resulted in a faintly increased yield of polysaccharides, indicating that the yield of polysaccharides started to maintain a dynamic equilibrium with increasing extraction time.…”