| Enhancing polyphenol extraction from unripe apples by carbohydrate-hydrolyzing enzymes. | |
| | |
MedLine Citation:
|
PMID: 19946955 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The effects of process variables such as enzyme types, enzyme ratio, reaction temperature, pH, time, and ethanol concentration on the extraction of unripe apple polyphenol were investigated. The results indicated that Viscozyme L had the strongest effect on polyphenols extraction and was selected to study the polyphenol composition. The ratio of enzyme (Viscozyme L) to substrate (2 fungal beta-glucanase units (FBG)) at 0.02, reaction at pH 3.7, 50 degrees C for 12 h, and ethanol concentration of 70% were chosen as the most favorable extraction condition. Total phenolic content (TPC), reducing sugar content (RSC), and extraction yield increased by about 3, 1.5, and 2 times, respectively, compared with control. The contents of p-coumaric acid, ferulic acid, and caffeic acid increased to 8, 4, and 32 times, respectively. The enzyme-aided polyphenol extraction process from unripe apples might be applied to food industry for enhancing bioactive compound production. |
| | |
Authors:
|
Hu-zhe Zheng; In-Wook Hwang; Shin-Kyo Chung |
Related Documents
:
|
16721875 - Characterization of bacteriocin hv219, produced by lactococcus lactis subsp. lactis hv2... 18556815 - Characterization of cyclodextrin glucanotransferase produced by bacillus megaterium. 3536895 - Effects of temperature and monovalent cations on activity and quaternary structure of t... 9169005 - Purification and characterization of a phytase from klebsiella terrigena. 2809615 - Pleiotropic molecular defects in energy-transducing complexes in mitochondrial encephal... 11257605 - Variations in the enantioselectivity of salt-activated subtilisin induced by lyophiliza... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of Zhejiang University. Science. B Volume: 10 ISSN: 1862-1783 ISO Abbreviation: J Zhejiang Univ Sci B Publication Date: 2009 Dec |
Date Detail:
|
Created Date: 2009-11-30 Completed Date: 2010-03-01 Revised Date: 2010-09-27 |
Medline Journal Info:
|
Nlm Unique ID: 101236535 Medline TA: J Zhejiang Univ Sci B Country: China |
Other Details:
|
Languages: eng Pagination: 912-9 Citation Subset: IM |
Affiliation:
|
Department of Food Science and Technology, Kyungpook National University, Daegu 702-701, Korea. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Caffeic Acids
/
chemistry Carbohydrates / chemistry* Chlorogenic Acid / chemistry Coumaric Acids / chemistry Ethanol / chemistry Flavonoids / chemistry* Glucans / chemistry* Glycoside Hydrolases / chemistry* Hydrogen-Ion Concentration Hydrolysis Malus / enzymology* Phenol / chemistry Phenols / chemistry* Protein Binding Temperature |
| Chemical | |
Reg. No./Substance:
|
0/Caffeic Acids; 0/Carbohydrates; 0/Coumaric Acids; 0/Flavonoids; 0/Glucans; 0/Phenols; 0/polyphenols; 108-95-2/Phenol; 1135-24-6/ferulic acid; 327-97-9/Chlorogenic Acid; 331-39-5/caffeic acid; 64-17-5/Ethanol; 7400-08-0/4-coumaric acid; EC 3.2.1.-/Glycoside Hydrolases |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Population growth, trophic level, and reproductive biology of two congeneric archer fishes (Toxotes ...
Next Document: Interleukin-6 polymorphisms modify the risk of periodontitis: a systematic review and meta-analysis.