Antiradical activity and free radicals before and after gamma-treatment of beebread were investigated by Electron Paramagnetic Resonance (EPR) spectroscopy. A narrow signal the intensity of which increased with the dose was assigned to O-centred free radicals induced by gamma rays. They are stable for 120 days after irradiation. The irradiation effect on antioxidant potential and content of phenolic compounds were studied. It was found that total phenolic and flavonoid content values increased after beebread irradiation depending on the dose. The antiradical activity of extracts was assessed by the DPPH free radical scavenging activity. The EPR study showed that it increased after irradiation with 5 kGy (27%) and 20 kGy (19%), while the slight decreasing (6%) was observed after irradiation at 10 kGy.
机构:
College of Light Industry and Food Sciences, South China University of Technology, Guangzhou,510640, ChinaCollege of Light Industry and Food Sciences, South China University of Technology, Guangzhou,510640, China
Li, Huipin
Zhao, Mouming
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College of Light Industry and Food Sciences, South China University of Technology, Guangzhou,510640, ChinaCollege of Light Industry and Food Sciences, South China University of Technology, Guangzhou,510640, China
Zhao, Mouming
Zhao, Haifeng
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College of Light Industry and Food Sciences, South China University of Technology, Guangzhou,510640, ChinaCollege of Light Industry and Food Sciences, South China University of Technology, Guangzhou,510640, China
机构:
Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of AgricultureInstitute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of Agriculture
TONG Li-tao
LIU Li-ya
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Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of AgricultureInstitute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of Agriculture
LIU Li-ya
ZHONG Kui
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Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of AgricultureInstitute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of Agriculture
ZHONG Kui
WANG Yan
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Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of AgricultureInstitute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of Agriculture
WANG Yan
GUO Li-na
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Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of AgricultureInstitute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of Agriculture
GUO Li-na
ZHOU Su-mei
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Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of AgricultureInstitute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing,Ministry of Agriculture
机构:
Periyar Univ, Dept Biochem, Periyar Palkalainagar, Salem 636011, Tamil Nadu, IndiaPeriyar Univ, Dept Biochem, Periyar Palkalainagar, Salem 636011, Tamil Nadu, India
Govindan, Parameswari
Muthukrishnan, Suriyavathana
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Periyar Univ, Dept Biochem, Periyar Palkalainagar, Salem 636011, Tamil Nadu, IndiaPeriyar Univ, Dept Biochem, Periyar Palkalainagar, Salem 636011, Tamil Nadu, India