Design and optimization of a semicontinuous hot-cold extraction of polyphenols from grape pomace

Journal of Agricultural and Food Chemistry
J K MonradJerry W King

Abstract

Grape pomace contains appreciable amounts of polyphenolic compounds such as anthocyanins and procyanidins which can be recovered for use as food supplements. The extraction of these polyphenols from the pomace is usually accomplished at slightly elevated temperatures, frequently employing hydroethanolic solvents. Due to governmental regulations and the cost involved in using ethanol as a solvent, as well as the loss in polyphenolics due to thermal degradation, improved extraction techniques are required. In this study, a semicontinuous extraction apparatus employing only water was developed to maximize the recovery of anthocyanins and procyanidins from red grape pomace (Vitis vinifera). Water is preheated prior to its entry to the extraction cell containing the grape pomace sample, where it is allowed to then flow continuously through the unheated extraction vessel prior to its collection at ambient conditions. Extraction variables that impacted the polyphenolic recovery included pomace moisture content (crude or dried), sample mass, water flow rate, and extraction temperature. A response surface method was used to analyze the results from the extraction, and the optimal conditions were found to be 140 °C and 9 mL/min water flo...Continue Reading

References

Mar 16, 2002·The British Journal of Nutrition·Jennifer L DonovanAndrew L Waterhouse
Jan 9, 2003·Journal of Agricultural and Food Chemistry·Elena IbañezSteven B Hawthorne
Feb 19, 2004·Journal of Agricultural and Food Chemistry·Stéphane VidalGeorge Skouroumounis
Apr 1, 2004·Applied Biochemistry and Biotechnology·Lijun DuanEdgar C Clausen
Feb 1, 2005·Plant Foods for Human Nutrition·L H YaoS S Chen
Sep 1, 2005·Journal of Chromatography. a·R Carabias-MartínezJ Hernández-Méndez
Nov 6, 2007·Molecular Nutrition & Food Research·Eva SadilovaFlorian C Stintzing
Mar 12, 2009·Applied Biochemistry and Biotechnology·Lijun DuanDanielle Julie Carrier
Dec 22, 2009·Journal of Agricultural and Food Chemistry·Jeana K MonradAndy Mauromoustakos
Jan 12, 2010·Journal of Chromatography. a·Chin Chye TeoEng Shi Ong
Feb 13, 2010·Journal of Agricultural and Food Chemistry·Jeana K MonradAndy Mauromoustakos
Aug 17, 2011·Analytica Chimica Acta·Arwa Mustafa, Charlotta Turner

❮ Previous
Next ❯

Citations

Jun 25, 2013·Journal of Agricultural and Food Chemistry·José R Vergara-SalinasJosé R Pérez-Correa
Jul 6, 2014·Food Chemistry·Vivian Caetano BochiHelena Teixeira Godoy
Jun 1, 2021·Food Research International·Anna Paula de Souza SilvaSeverino Matias de Alencar

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.