Journal
FOODS
Volume 9, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/foods9091320
Keywords
wild species; edible herbs; processing; antioxidants; polyphenols; flavones; flavonols
Categories
Funding
- Project Recupero ambientale del Bosco di Gravina in Puglia e valorizzazione della sua biodiversita attraverso la creazione di microfiliere gastronomiche, P.S.R. Puglia
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The study aimed to assess the influence of three cooking methods (boiling, steaming, and microwave-cooking) on (i) composition in individual phenolic compounds, (ii) total phenolic content (TPC), and (iii) total antioxidant activity (TAA) of eight Mediterranean wild edible species (Asparagus acutifolius,Asphodeline lutea,Beta vulgaris,Helminthotheca echioides,Sonchus oleraceus,Taraxacum officinale,Urospermum picroides,Urtica dioica). In raw greens, several caffeic acid derivatives (chicoric, caftaric, chlorogenic, neochlorogenic, 1,5-and 3,5-dicaffeoylquinic acids) and flavonoids (glycosides of apigenin, luteolin, quercetin, isorhamnetin, kaempferol) were identified. Cooking treatments did not affect qualitative phenolic composition, while quantitative changes were recorded in some phenolic compounds and in TPC. Generally, boiling decreased TPC and TAA, while chicoric, caftaric, chlorogenic acids and quercetin-3-rutinoside increased in some species after steaming and microwave-cooking, showing positive correlation with TAA. Results confirmed steaming and microwave-cooking as mild procedures able to increase antioxidant capacity of some species, producing beneficial effects on their nutraceutical properties.
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