The phytochemical rich potential of acorn (Quercus aegilops) products and by products
| Autor: | Alexia Skaltsi, Maria Papageorgiou, Panayotis D. Karayannakidis, Vassiliki T. Papoti, Nikoleta Kizaki |
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| Rok vydání: | 2017 |
| Předmět: |
DPPH
Sodium Potassium chemistry.chemical_element 04 agricultural and veterinary sciences Acorn 040401 food science Applied Microbiology and Biotechnology chemistry.chemical_compound 0404 agricultural biotechnology chemistry Phytochemical Food science Phenols Gallic acid Leaching (agriculture) Food Science Biotechnology |
| Zdroj: | Food Science and Biotechnology. 27:819-828 |
| ISSN: | 2092-6456 1226-7708 |
| Popis: | The phytochemical content of acorn (Quercus aegilops) products (nuts and flour) and by products (shells and leaching waters) regarding their content in total phenols, fatty acids, sodium, potassium and calcium was investigated. Antioxidant activity was also examined. Acorn materials presented high total phenol content (up to 47.6 ± 0.6 mg gallic acid equivalents (GAE)/g dry material), with a substantial amount remaining after leaching (11.6 ± 0.7 mg GAE/g flour), and high DPPH radical scavenging and ferric reducing activity. Their content in potassium, calcium, oleic and linoleic acids was considered significant. Molecular weight distribution of proteins and peptides was also studied and found between 7 and 45 kDa; only for acorn shells a band > 250 kDa appeared. Leaching parameters (time, material size, material to water ratio, temperature, NaCl presence) significantly affected the phytochemical content of the remained leached material. |
| Databáze: | OpenAIRE |
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