Effects of γ-irradiation on antioxidant and antimicrobial activities and color of Ecklonia cava
| Autor: | Myung Woo Byun, Dong-Hyun Ahn, Jong Il Choi, Ah-Ram Kim, Eu Jin Song, So-Young Lee, Ju Woon Lee, Koth Bong Woo Ri Kim, Jin-Gyu Park, Jae-Hun Kim |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Ecklonia cava
Antioxidant Ethanol biology Chemistry DPPH medicine.medical_treatment Extraction (chemistry) Water extraction biology.organism_classification Antimicrobial Applied Microbiology and Biotechnology chemistry.chemical_compound Polyphenol medicine Organic chemistry Food science Food Science Biotechnology |
| Zdroj: | Food Science and Biotechnology. 20:593-599 |
| ISSN: | 2092-6456 1226-7708 |
| DOI: | 10.1007/s10068-011-0084-8 |
| Popis: | Ecklonia cava (EC) was irradiated with γ-rays at doses of 3, 7, and 20 kGy. The extraction yields, total polyphenol content (TPC), DPPH radical scavenging activity, antimicrobial activity, and color of the EC extracts were assessed. The results showed that irradiation caused an increase in the extraction yields of ethanol and water. TPC was found to be significantly increased when EC powder was subjected to irradiation, followed by ethanol and water extraction. However, DPPH radical scavenging and antimicrobial activities were stable under all irradiation conditions. In the heat and pH stability tests, the DPPH radical scavenging activities of EC ethanol extracts were not influenced by irradiation. Irradiation caused an increase in the lightness and redness of EC extracts and decreased the yellowness. In conclusion, γ-irradiation increased the extraction yield and TPC and brightened the color, while maintaining the antioxidant and antimicrobial activities. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink