Extraction of phenolic compounds from red grape marc for use as food lipid antioxidants

Extraction of phenolic compounds from red grape marc for use as food lipid antioxidants Grape marc resulting from red winemaking was extracted with a mixture of ethyl acetate and water in order to obtain its phenolic compounds with a view to their use as food lipid antioxidants. Crushed and uncrushed marcs were extracted for 5, 10, 20 and 30 min in order to determine the minimum time required for ensuring maximal extraction of phenols. The results reveal a higher extraction of these compounds by the ethyl acetate acting on crushed marc, so the cost of this last operation can be largely compensated. The antioxidant lipid activity of the phenolic compounds of this extract was determined by using the Rancimat method on refined olive oil, and compared with the induction periods of BHT, BHA, propyl gallate and pure standards of those phenols identified in the above mentioned organic extract. In this test, the phenols of the extract show a lower antioxidant activity than the synthetic food antioxidants, although close to that of BHT, mostly as a result of its catechin content. © http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Food Chemistry Elsevier

Extraction of phenolic compounds from red grape marc for use as food lipid antioxidants

Food Chemistry, Volume 66 (2) – Aug 1, 1999

Loading next page...
 
/lp/elsevier/extraction-of-phenolic-compounds-from-red-grape-marc-for-use-as-food-518BG7zhC6
Publisher
Elsevier
Copyright
Copyright © 1999 Elsevier Science Ltd
ISSN
0308-8146
DOI
10.1016/S0308-8146(99)00046-1
Publisher site
See Article on Publisher Site

Abstract

Grape marc resulting from red winemaking was extracted with a mixture of ethyl acetate and water in order to obtain its phenolic compounds with a view to their use as food lipid antioxidants. Crushed and uncrushed marcs were extracted for 5, 10, 20 and 30 min in order to determine the minimum time required for ensuring maximal extraction of phenols. The results reveal a higher extraction of these compounds by the ethyl acetate acting on crushed marc, so the cost of this last operation can be largely compensated. The antioxidant lipid activity of the phenolic compounds of this extract was determined by using the Rancimat method on refined olive oil, and compared with the induction periods of BHT, BHA, propyl gallate and pure standards of those phenols identified in the above mentioned organic extract. In this test, the phenols of the extract show a lower antioxidant activity than the synthetic food antioxidants, although close to that of BHT, mostly as a result of its catechin content. ©

Journal

Food ChemistryElsevier

Published: Aug 1, 1999

References

  • Lipid antioxidants in plant tissue
    Pratt, D.E
  • Source of antioxidant activity of soybeans and soy products
    Pratt, D.E; Birac, P.M

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create folders to
organize your research

Export folders, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off