Investigation of the antioxidant behavior of air- and freeze-dried aromatic plant materials in relation to their phenolic content and vegetative cycle

dc.contributor.author	Papageorgiou, V	en
dc.contributor.author	Mallouchos, A	en
dc.contributor.author	Komaitis, M	en
dc.date.accessioned	2014-06-06T06:48:34Z
dc.date.available	2014-06-06T06:48:34Z
dc.date.issued	2008	en
dc.identifier.issn	00218561	en
dc.identifier.uri	http://dx.doi.org/10.1021/jf8009393	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/4191
dc.subject	Air drying	en
dc.subject	Antioxidant activity	en
dc.subject	Aromatic plants	en
dc.subject	Fennel	en
dc.subject	Freeze-drying	en
dc.subject	Greek bay	en
dc.subject	Marjoram	en
dc.subject	Phenolics	en
dc.subject	Rosemary	en
dc.subject	RP-HPLC	en
dc.subject	Spearmint	en
dc.subject.other	antioxidant	en
dc.subject.other	flavonoid	en
dc.subject.other	phenol derivative	en
dc.subject.other	article	en
dc.subject.other	chemistry	en
dc.subject.other	desiccation	en
dc.subject.other	fennel	en
dc.subject.other	freeze drying	en
dc.subject.other	growth, development and aging	en
dc.subject.other	high performance liquid chromatography	en
dc.subject.other	Laurus	en
dc.subject.other	Mentha	en
dc.subject.other	methodology	en
dc.subject.other	odor	en
dc.subject.other	oregano	en
dc.subject.other	plant	en
dc.subject.other	plant leaf	en
dc.subject.other	rosemary	en
dc.subject.other	Antioxidants	en
dc.subject.other	Chromatography, High Pressure Liquid	en
dc.subject.other	Desiccation	en
dc.subject.other	Flavonoids	en
dc.subject.other	Foeniculum	en
dc.subject.other	Freeze Drying	en
dc.subject.other	Laurus	en
dc.subject.other	Mentha	en
dc.subject.other	Odors	en
dc.subject.other	Origanum	en
dc.subject.other	Phenols	en
dc.subject.other	Plant Leaves	en
dc.subject.other	Plants	en
dc.subject.other	Rosmarinus	en
dc.subject.other	Foeniculum vulgare	en
dc.subject.other	Laurus	en
dc.subject.other	Laurus nobilis	en
dc.subject.other	Mentha	en
dc.subject.other	Mentha spicata	en
dc.subject.other	Origanum	en
dc.subject.other	Origanum majorana	en
dc.subject.other	Rosmarinus officinalis	en
dc.title	Investigation of the antioxidant behavior of air- and freeze-dried aromatic plant materials in relation to their phenolic content and vegetative cycle	en
heal.type	journalArticle	en
heal.identifier.primary	10.1021/jf8009393	en
heal.publicationDate	2008	en
heal.abstract	The total phenolic and flavonoid content of the aerial parts of five aromatic plants harvested at different periods was estimated, and their antioxidant capacity was evaluated. Major phenolic compounds present in their extracts were determined by RP-HPLC. The results demonstrated different amounts of total phenolic compounds and various degrees of antioxidant activity depending on the plant species, the time of harvest, and the drying method employed. Extracts from air-dried Mentha viridis L., Origanum majorana L., and Rosmarinus officinalis L. demonstrated the greatest efficacy during the flowering stage, in which the identified flavonoids were found in significantly higher amounts, whereas phenolic acids were found in their lowest concentration. Extracts from air-dried Laurus nobilis L. and Foeniculum vulgare Mill were less efficient in terms of antioxidant activity, with the highest values being observed during the early fruiting stage. This stage was characterized by the lowest flavonoid content and high phenolic acid content, except for L. nobilis L. extracts. Overall, the amount of identified phenolic acids did not vary considerably within the investigated year. The total phenolic concentration in all plant extracts decreased significantly when freeze-dried rather than air-dried samples were used. The HPLC analysis further supported the above for most of the phenolic compounds present in the extracts, except for hydroxybenzoic acids, which were better retained during the freeze-drying process. © 2008 American Chemical Society.	en
heal.journalName	Journal of Agricultural and Food Chemistry	en
dc.identifier.issue	14	en
dc.identifier.volume	56	en
dc.identifier.doi	10.1021/jf8009393	en
dc.identifier.spage	5743	en
dc.identifier.epage	5752	en