Tea (Camellia sinensis) is the most widely consumed beverage in world, with an excellent source of bioactive compounds such as catechins, caffeine, and epigallocatechin. There increasing trend to extract these deliver them value-added products. Generally, extraction polyphenols other functional from different parts tea carried out using solvents (e.g., water, water–ethanol, ethanol, methanol, a...

Carotenoids are known for their antioxidant activity and health promoting effects. One of the richest sources of carotenoids are carrots. However, about 25% of the annual production is regarded as by-products due to strict market policies. The aim of this study was to extract carotenoids from those by-products. Conventional carotenoid extraction methods require the use of organic solvents, whic...

In this research, the effect of friction between the liquid metal and the sand mould wall and the effect of passage of liquid through a vertical bend and through a ceramic filter on the fluid flow and the melt velocity has been studied by measuring the velocity of the melt and direct observation of the liquid flow through the different parts of a naturally-pressurized running system. The fricti...

Hydroforging is a hybrid forming operation whereby a thick tube is formed to a desired geometry by combining forging and hydroforming principles. Through this process hollow structures with high strength-to-weight ratio can be produced for applications in power transmission systems and other structural components that demands high strength-to-weight ratio. In this process, a thick tube is defor...

This paper describes a comparative study of extraction methods of terpenes (terpenic alcohols and phytosterols), fatty acids and Vitamin E from leaves of Piper gaudichaudianum Kunth. The analysis of extracts was done by gas chromatography with mass spectrometric detection. The identification and quantification was made by co-injections of the extract with certified standards. The use of pressur...

The feasibility of employing aqueous non-ionic surfactant solutions as an alternative solvent system in pressurized liquid extraction (PLE) is demonstrated for the first time using the roots of American ginseng as model solid samples. When compared to the use of pure water or methanol, the presence of a common non-ionic surfactant (Triton X-100) in water at a concentration above its critical mi...

This work aimed to investigate the optimum conditions of pressure, temperature, ultrasound intensity, solvent concentration and flowrate ultrasound-assisted pressurized liquid extraction anthocyanins from Aronia melanocarpa pomace. The novel setup operates with an aqueous solution citric acid as solvent. optimization was performed in order maximize total content extracted optimized 70 °C, 180 b...