Extraction of methylxanthines by pressurized hot water extraction from cocoa shell by-product as natural source of functional ingredient

Pressurized hot water extraction (PHWE).

Pressurized hot water extraction (PHWE) has become a popular green extraction method for different classes of compounds present in numerous kinds of matrices such as environmental, food and botanical samples. PHWE is also used in sample preparation to extract organic contaminants from foodstuff for food safety analysis and soils/sediments for environmental monitoring purposes. The main paramete...

Pressurized hot ethanol extraction of carotenoids from carrot by-products.

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...

Highly Isoxanthohumol Enriched Hop Extract Obtained by Pressurized Hot Water Extraction (phwe). Chemical and Functional Characterization

Adsorption of Zn (II) from aqueous solution by using chitin extraction from crustaceous shell

Removal of toxic heavy metals from wastewater is an important environmental challenge. In this Study, Zn (II) removal from aqueous solution by chitin extraction from crustaceous shells (shrimp and crab) was investigated. The biosorption studies were determined as a function of contact time, pH, initial metal concentration, and the amount of adsorbent. Adsorption of Zn (II) increased with decrea...

On-line Combinations of Pressurized Hot-Water Extraction and Microporous Membrane Liquid–Liquid Extraction with Chromatography

298 Introduction Environmental and biological analyses are especially challenging for the analyst because sample matrices tend to be very complex and the analytes are present at very low levels. Selective and sensitive methods are needed for both sample preparation and analysis. Typically, extraction and clean-up are needed in the sample preparation, and the analyses are performed by chromatogr...