It is reported that salvianolic acid B, a bioactive phenolic compound contained in the root of Salvia miltiorrhiza, exhibits a much stronger activity in free radical scavenging and antioxidance than those of vitamin E. When a conventional refluxing method is adopted to extract salvianolic acid B from the root, in which the materials are subjected to higher temperature and longer time, the yield...

Seeds of plants from Ipomoea genera contain numerous ergot alkaloids, including psychoactive ergine and ergometrine, and are often abused as so-called "legal highs." In this work, an analytical method for determination of ergine and ergometrine, and identification of other alkaloids was developed, optimized, and validated. Three extraction techniques, ultrasound-assisted extraction in bath, or ...

Lantana camara is known to have anti-bacterial properties which can be exploited develop a natural food preservative. There huge demand for preservatives in industry due the increased health risks associated with synthetic preservatives, development of effecient extraction methods are essential retain heat sensitive bioactive compounds. This aim this study was compare performance microwave-assi...

In this study, Microwave-Assisted Solvent Extraction (MASE) was used to recover oil residues from pomace olive using acidic hexane. Results obtained demonstrated that oil extraction yield increased with time, the amount of acetic acid in hexane and power radiation. For both radiation powers used (170 and 510W), the optimal extraction time and most interesting content of acetic acid in hexan...

In recent years, the scientific community has turned its attention to further study and application of green chemistry as well sustainable development in reducing consumption raw materials, solvents, energy. The aims ensure protection environment also, consequently, improve quality human life. It offers several benefits, both socially economically. last few decades, new alternative non-conventi...

Operation conditions to recover and quantify active compounds from Perle Hallertau (PH) Nuggets (N) hops, following a sequential combination of ultrasound microwave assisted ethanolic extraction were studied. Ultrasound treatment (55 °C, 60% ethanol, 30 minutes) allowed extracts with phenolic contents 160.43 mg GAE/g extract ABTS radical scavenging capacity equivalent 400.24 Trolox/g for PH. Op...

The highest concentration of aluminium (Al) in human blood has toxic effect and so, extraction from human body is very important. In this procedure, an efficient and new method based on graphene oxide nanoparticles (GONPs) dispersed in ionic liquid (IL) was used for in-vitro separation/extraction of trace Al from the blood of dialysis patients by ultrasound assisted-dispersive-micro solid phase...

Ultrasound-assisted extraction (UAE) of phenolic compounds from Inula helenium was studied. Effects of ethanol concentration, ultrasonic time, solid-liquid ratio, and number of extractions were investigated. An orthogonal array was constructed to optimize UAE process. The optimized extraction conditions were as follows: ethanol concentration, 30%; solid-liquid ratio, 1 : 20; number of extractio...

Microwave-assisted extraction (MAE) and microwave-assisted hydrolysis (MAAH) were developed for the sample preparation of guava leaves prior to GC determination of quercetin and its glycosides. Ethanol was selected as the solvent. The optimum MAE temperature, particle size, solvent volume and MAE time are 120 degrees C, 40 - 60 mesh, 20 mL and 5 min, respectively; the optimum MAAH temperature a...

Abstract The demand for proteins is constantly increasing and green extraction methodologies are needed to achieve environmental sustainability goals. recovery of the by-products agri-food chain has also become a priority from circular economy perspective. Some still little exploited proteins, such as coffee by-products. In this work, various innovative technologies were applied recover protein...