期刊
JOURNAL OF FOOD SCIENCE
卷 80, 期 4, 页码 H889-H893出版社
WILEY
DOI: 10.1111/1750-3841.12823
关键词
calf thymus DNA; cyaniding; cyanidin-3-glucoside; intercalative binding mode; protective capacity; thermodynamics
资金
- Natl. Natural Science Foundation of China [31101262]
- Beijing Academy of Agricultural and Forestry Sciences Special Fund [KJCX20140204]
- China Agriculture Research System [CARS-25, CARS-26]
The binding characteristics and protective capacity of cyanidin (Cy) and cyanidin-3-glucoside (C3G) to calf thymus DNA were explored for the first time. The Cy and C3G gave a bathochromic shift to the ultraviolet-visible spectra of the DNA, indicating the formation of the DNA-Cy and DNA-C3G complexes. The complexes were formed by an intercalative binding mode based on the results of the fluorescence spectra and competitive binding analysis. Meanwhile, the Cy and C3G protected the DNA from the damage induced by the hydroxyl radical. The binding capacity and protective capacity of the C3G were stronger than that of the Cy. Furthermore, the formation of the DNA-anthocyanin complexes was spontaneous when the hydrogen bond and hydrophobic force played a key role. Hence, the Cy and C3G could protect the DNA automatically from the damage induced by the hydroxyl radical. Practical Application The cyanidin and cyanidin-3-glucoside were effective to protect the calf thymus DNA from the damage induced by the hydroxyl radical. The binding capacity and protective capacity of the cyanidin-3-glucoside were stronger than that of the cyanidin. The results gave an instruction for the development of the anthocyanin-related products.
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