The need for efficient extraction of plant constituents with a high yield and purity limitations to conventional techniques that are limited by mass transfer, has resulted in the development new processes. Sonochemistry involves cavitation induced pressure fluctuations generated ultrasound waves liquid medium. Ultrasound can be effectively used increase transfer rate solid-liquid present work e...

Seaweeds have an extremely numerous of species in the world and been able to be divided into several developmental systems. Broadly, three types of seaweeds can be defined according to their color: brown seaweeds, green seaweeds, and red seaweeds. Thousands of years ago, mankind used seaweeds as food and medicine. Seaweed extracts are gaining increasing attention due to their unique composition...

Anthocyanins are present in blackberries and can be used the food industry as visual indicators that allow understanding color variations related to quality of a food. The purpose this study was evaluated castilla blackberry (Rubus glaucus Benth) wild adenotrichos) were assessed considering type raw material; fresh lyophilized (22°C, 4.3 mbar, 7 days), pretreatment with microwaves (2450 MHz, 30...

The present article includes the Ultrasound-Assisted Extraction (UAE) of Citrus unsiu Marc. leaves rich in polyphenols. The best possible combinations of solvent, pH of the media, solvent/solid ratio, extraction time, extraction temperature and particle size were obtained for the maximum extraction of Total Phenolic Compounds (TPC) and Total Flavonoid Compounds (TFC) by us...

Ultrasound-assisted extraction of metal ions from Lithium batteries with weak organic acids is reported. Leaching reached ?98% Li and Co recovery due to improved residue layer diffusion mass transfer, illustrated by the shrinking core model.

Agar-based extracts from Gelidium sesquipedale were obtained by applying a conventional hot water treatment and alternative ultrasound- microwave-assisted methods, with without the application of an alkaline pre-treatment. The pre-treatment produced refined higher purity; however, extraction yields increased 2–5% to 7–19% omitting this step. In particular, ultrasound-assisted allowed reducing 4...

Food wastes are produced by a variety of sources, ranging from agricultural operations to household consumption. About 38% occurs during food processing. At present, the European Union legislation encourages the exploitation of co-products. This valorisation can be achieved through the extraction of high-value components such as proteins, polysaccharides, fibres, flavour compounds, and phytoche...

a simple and green chemical procedure was reported for the synthesis of dihydropyrimidinones from various aldehydes, ethyl acetoacetate and urea or thiourea using  holmium chloride as catalyst. the reactions were performed under solvent free conditions with ultrasound irradiation as the energy source. the advantages of this protocol include the excellent yield, operational simplicity, short tim...

Cat’s claw oxindole alkaloids are prone to isomerization in aqueous solution. However, studies on their behavior in extraction processes are scarce. This paper addressed the issue by considering five commonly used extraction processes. Unlike dynamic maceration (DM) and ultrasound-assisted extraction, substantial isomerization was induced by static maceration, turbo-extraction and reflux extrac...