Document Detail


Soluble phenolic compounds in fresh and ensiled orchard grass (Dactylis glomerata L.), a common species in permanent pastures with potential as a biomass feedstock.
MedLine Citation:
PMID:  24341797     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
High value co-products can greatly improve the feasibility of utilising plant feedstocks for biorefining and biofuel production. Plant polyphenolics have potential application in the pharmaceutical and cosmetic industries. Orchard grass varieties have been noted for accumulation of polyphenolic compounds and the current study determined the soluble phenol profile and content in the orchard grass variety Abertop. Hydroxycinnamates and flavonoids, were monitored during transition from vegetative to flowering stage at maximum crop yield. Caffeic acid derivatives, related to bioactives in the Asian medicinal herb Salvia miltiorrhiza, and novel hydroxycinnamate-flavone conjugates were also identified in extracts. Harvest yields of hydroxycinnamates and flavonoids ranged from 2.6-5.1 and 4.3-6.2 kg/ha respectively. Abundant compounds showed high levels of antioxidant activity comparable with ascorbic acid. Minimal changes in soluble phenol content and composition were observed after ensiling with the exception to this being an increase in caffeic acid, a caffeic acid derivative and a caffeic acid breakdown product, dihydroxystyrene.
Authors:
Barbara A Hauck; Joe A Gallagher; Michael Morris; David Leemans; Ana Louise Winters
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-12-17
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  -     ISSN:  1520-5118     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2013 Dec 
Date Detail:
Created Date:  2013-12-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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