Physicochemical properties and cytotoxicity of carbon dots in grilled fish. (20th July 2017)

• Record Type: Journal Article
• Authors: Bi, Jingran; Li, Yao; Wang, Haitao; Song, Yukun; Cong, Shuang; Li, Dongmei; Zhou, Dayong; Zhu, Bei-Wei; Tan, Mingqian
• Is Part Of: New journal of chemistry. Volume 41:Number 16(2017)
• Page Start: 8490
• Page End: 8496
• Publication Date: 2017-07-20
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c7nj02163a
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Fluorescent CDs with good biocompatibility and low cytotoxicity are extracted from grilled pike eel, which are used for bio-imaging. Abstract : In recent years, the presence of food-borne nanoparticles during food processing has been a controversial issue. In this paper, we introduced a class of extremely low-cytotoxicity carbon dots (CDs) extracted from grilled pike eel which have been consumed for thousands of years. These CDs are water-soluble, quasi-spherical, and nanosized (approximately 2.75 nm). UV illumination can excite CDs to emit a strong sapphire luminescence with a quantum yield as high as 68.7%. X-ray diffraction (XRD) analysis showed that these nanoparticles are amorphous attributed to the disordered carbon atoms. X-ray photoelectron spectroscopy (XPS) measurements showed that the CDs contain a predominant C1s peak at 284.43 eV and an O1s peak at 531.35 eV accompanied by a pronounced N1s peak at 399.34 eV, with the atomic percentages of 66.58%, 17.5% and 15.91%, respectively. Moreover, the CDs also have excellent biocompatibility and could ease into the cytoplasmic region of MC3T3-E1 cells without any seriously imposed toxicity against cells.