Navigation Links
'Green' chemistry extraction method developed for hot capsicum fruit
Date:1/18/2011

LAS CRUCES, NM Plant pigments are an important source of non-toxic compounds for use as food or cosmetic coloring agents. In addition to their known nutritional value, the red pigments in Capsicum (chile pepper) are important as sources of non-toxic red dyes; the red pigments are added to many processed foods and cosmetics to enhance their appearance. Certain varieties of Capsicum annuum can be "extracted' to isolate red-colored xanthophylls, an important economical source of red pigments that can replace carcinogenic synthetic red dyes.

Until now, the common method for extracting red pigments from dried fruit of Capsicum has used hexane as the extraction solvent. A noteworthy new research study from New Mexico State University presents a process for efficient extraction of these red pigments using "green chemistry". The method recovers 85% or greater of the pigmented carotenoids from dried Capsicum and reduces the hazardous waste and environmental risks associated with traditional extraction methods.

In New Mexico, the economic value of a chile crop includes the value of the fruit harvested as a fresh green product and a dried red product often harvested later in the season. Current extraction processes are limiting; red pigment can only be recovered from American paprika varieties or other mild cultivars. According to a team of researchers from the Department of Plant and Environmental Sciences at New Mexico State University, if extraction of the red pigments could be achieved separate from the capsaicinoids, then a wider range of red-fruited cultivars could be used, including those with important values as fresh green crops.

The scientists created a "green chemical" method that generates an oleoresin from dried Capsicum fruit with virtually the same carotene and xanthophyll composition as the hexane extraction method. The report appears in HortScience. Mary A. O'Connell, corresponding author of the study, explained; "If alternative and environmentally sound, "green" extraction protocols could be developed to replace the use of hexane as a solvent for oleoresin production. This would improve the environmental risks for the isolation of red pigments from Capsicum fruit."

The "green" extraction method includes a process that separates the pigments from the capsaicinoids, an important step which the researchers say increases the flexibility of the process to allow a variety of red Capsicum fruit to be used easily for pigment production. The authors noted that this step in the process is critical, as it allows the pigment industry and Capsicum farmers to use virtually any variety of chile regardless of heat level for pigment production. "Pungent chiles with high American Spice Trade Association (ASTA) values could be grown for either food/spice uses or pigment production", they remarked.

The researchers added that since growers may rely on mechanical harvest of chiles in the future, contamination of the red fruit with stems and leaves may become higher with mechanical harvesting than in hand harvesting. They observed that the type of supercritical fluid extraction method presented in this study provides an advantage for red fruit harvests mixed with leaf material because it reduces the amount of chlorophyll that contaminates the carotenoid pigment extracts as compared with a hexane extract.


'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert  

Related biology news :

1. Big city life may make residents lean toward green, study says
2. Scientists: Big city life may alter green attitudes
3. MU scientists find new farming method to reduce greenhouse gases, increase farm yields
4. The good, the bad and the green -- harnessing the potential of bacteria
5. Looking good on greens
6. Freshwater methane release changes greenhouse gas equation
7. How does your green roof garden grow?
8. New technology improves greenhouse, plant microclimates
9. Blue-green algae tested for treating ALS
10. Rising greenhouse gases profoundly impact microscopic marine life
11. Global rivers emit 3 times IPCC estimates of greenhouse gas nitrous oxide
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Green' chemistry extraction method developed for hot capsicum fruit
(Date:4/5/2017)... 2017 Today HYPR Corp. , leading ... component of the HYPR platform is officially FIDO® ... security architecture that empowers biometric authentication across Fortune 500 ... secured over 15 million users across the financial services ... home product suites and physical access represent a growing ...
(Date:3/30/2017)... ANGELES , March 30, 2017  On April ... Hack the Genome hackathon at Microsoft,s ... exciting two-day competition will focus on developing health and ... Hack the Genome is the ... been tremendous. The world,s largest companies in the genomics, ...
(Date:3/28/2017)... The report "Video Surveillance Market ... Storage Devices), Software (Video Analytics, VMS), and Service (VSaaS, ... to 2022", published by MarketsandMarkets, the market was valued ... to reach USD 75.64 Billion by 2022, at a ... year considered for the study is 2016 and the ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... (PRWEB) , ... October 11, 2017 , ... ... any gene in its endogenous context, enabling overexpression experiments and avoiding the use ... with small RNA guides is transformative for performing systematic gain-of-function studies. , ...
(Date:10/11/2017)... (PRWEB) , ... October 11, 2017 , ... ComplianceOnline’s Medical ... place on 7th and 8th June 2018 in San Francisco, CA. The Summit brings ... well as several distinguished CEOs, board directors and government officials from around the world ...
(Date:10/11/2017)... Oct. 11, 2017  VMS BioMarketing, a leading provider of ... oncology Clinical Nurse Educator (CNE) network, which will launch this ... communication among health care professionals to enhance the patient care ... staff, and other health care professionals to help women who ... ...
(Date:10/11/2017)... ... October 11, 2017 , ... Disappearing forests and increased ... of over 5.5 million people each year. Especially those living in larger cities are ... - based in one of the most pollution-affected countries globally - decided to take ...
Breaking Biology Technology: