Mapping of an ultrasonic bath for ultrasound assisted extraction of mangiferin from Mangifera indica leaves

Abstract

The present work deals with the mapping of an ultrasonic bath for the maximum extraction of mangiferin from Mangifera indica leaves. I3(-) liberation experiments (chemical transformations) and extraction (physical transformations) were carried out at different locations in an ultrasonic bath and compared. The experimental findings indicated a similar trend in variation in an ultrasonic bath by both these methods. Various parameters such as position and depth of vessel in an ultrasonic bath, diameter and shape of a vessel, frequency and input power which affect the extraction yield have been studied in detail. Maximum yield of mangiferin obtained was approximately 31 mg/g at optimized parameters: distance of 2.54 cm above the bottom of the bath, 7 cm diameter of vessel, flat bottom vessel, 6.35 cm liquid height, 122 W input power and 25 kHz frequency. The present work indicates that the position and depth of vessel in an ultrasonic bath, diameter and shape of a vessel, frequency and input power have significant effect on the extraction yield. This work can be used as a base for all ultrasonic baths to obtain maximum efficiency for ultrasound assisted extraction.

KINETICS OF ULTRASOUND ASSISTED EXTRACTION OF WEDELOLACTONE FROM Eclipta alba

“…Although it possesses so many therapeutic activities, the extraction of wedelolactone has not been reported. The traditional solvent extraction technique used for extraction of natural products suffers from various disadvantages such as large solvent requirement, higher extraction time, lower yield and higher extraction temperature and thus requires development of an October -December, 2016 vessel was kept at the position and depth (2.54 cm above the bottom of the bath)optimized previously earlier (Kulkarni and Rathod, 2014).1 g of the E. alba leaf powder was taken in a glass vessel and 40 mL solvent was added to it. In order to avoid the loss of solvent, the glass vessel was covered with a lid before it was placed in an ultrasound bath.…”

Ultrasound assisted lipase catalyzed synthesis of cinnamyl acetate via transesterification reaction in a solvent free medium

“…Ltd.) which was maintained at desired temperature with an accuracy of ±1°C. The reactor was kept in the ultrasonic bath in such a way that it there is a clearance of 2 cm between reactor bottom and ultrasound bath bottom [22].…”

Fractionation of Mangifera indica Linn polyphenols by reverse phase supercritical fluid chromatography (RP-SFC) at pilot plant scale

“…The fraction F4 also contained high concentrations of the compounds iriflophenone 3-C-(2-O-p-hydroxybenzoyl)-␤-d-glucoside (5) and another unidentified compound (14). This latter compound showed a significant increase in content (by a factor of 12) in comparison with the crude extract.…”