Abstract
［Objective］ To establish a fast,sensitive,and accurate method for detecting carmine.［Methods］ Using Folium Nelumbinis;as the carbon source,carbon dots (FN-CDs ) were prepared using a solvent thermal method,and the preparation conditions were optimized using a single factor test.Study the factors that affect the fluorescence intensity of FN -CDs,the effects of coexisting substances on the detection system,and optimize the measurement conditions;Using FN -CDs for the determination of carmine content in food and exploring its mechanism of action.［Results］］ Using 0.6 g of Folium Nelumbinis,0.25 g of citric acid and 45 mL of formamide were reacted at 240 ℃ for 4 hours,and the fluorescence value of FN -CDs was the strongest.Rouge had a good linear relationship within the concentration range of 0~70 µg/mL,with an R2 of 0.996 4 and a detection limit of 0.57 µg/mL.The spiked recovery rates of grapefruit juice beverage and canned arbutu were 88.09%~102.49% and 97.73%~112.47%,respectively.［Conclusion］ This detection method has the characteristics of high sensitivity,good selectivity and high accuracy,and can be applied to the rapid detection of carmine in food.
Publication Date
2-18-2025
First Page
54
Last Page
60
DOI
10.13652/j.spjx.1003.5788.2024.80411
Recommended Citation
Li, HE; Jiaxin, LI; Chengna, HU; Xiangxin, FENG; and Tinging, FENG
(2025)
"Preparation of carbon dots from Folium nelumbinis and their application in the detection of food carmine,"
Food and Machinery: Vol. 40:
Iss.
11, Article 8.
DOI: 10.13652/j.spjx.1003.5788.2024.80411
Available at:
https://www.ifoodmm.cn/journal/vol40/iss11/8
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