Fluorescence Detection of Vanillin by Copper Doped Carbon Quantum Dots
Objective: A fluorescence detection method based on copper doped carbon quantum dots(Cu-CDs) was developed for the determination of vanillin in food. Method: Cu-CDs, with stable performance, were prepared by one-step hydrothermal method using ascorbic acid as precursors and copper sulfate as metal d...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
The editorial department of Science and Technology of Food Industry
2022-04-01
|
| Series: | Shipin gongye ke-ji |
| Subjects: | |
| Online Access: | http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2021060242 |
| _version_ | 1798017445034721280 |
|---|---|
| author | Xiaojing SI Luchen DENG Xin XU Li LI Xia GONG |
| author_facet | Xiaojing SI Luchen DENG Xin XU Li LI Xia GONG |
| author_sort | Xiaojing SI |
| collection | DOAJ |
| description | Objective: A fluorescence detection method based on copper doped carbon quantum dots(Cu-CDs) was developed for the determination of vanillin in food. Method: Cu-CDs, with stable performance, were prepared by one-step hydrothermal method using ascorbic acid as precursors and copper sulfate as metal dopant. The morphology, elementary composition and optical properties of the synthesized Cu-CDs were characterized by energy dispersive X-ray spectrometers, fourier transform infrared spectroscopy, ultraviolet and fluorescence techniques. The quenching effect of the Cu-CDs with vanillin was further studied. Results: C and Cu were evenly distributed in Cu-CDs solution. The Cu-CDs were rich in functional groups such as amino, carboxyl and hydroxyl groups, indicating that Cu-CDs had good water solubility. It was also found that vanillin had strong fluorescence quenching effect on Cu-CDs in the pH7.0 KH2PO4-K2HPO4 buffer solution，and the concentration of tetracycline in the range of 1～400 μmol/L showed a good linear relationship with the fluorescence quenching intensity of Cu-CDs, and the linear equation was y=0.0045x+0.1934（R2=0.9917）, the detection limit was 0.33 μmol/L. What’s more, it was applied to the determination of vanillin in food samples, the recovery was 98%~110%. Conclution: The method for the determination of vanillin has the advantages of low cost, high specificity, simple operation, and a good application prospect. |
| first_indexed | 2024-04-11T16:07:12Z |
| format | Article |
| id | doaj.art-5a9eab0157b54a1db6e2a9d0a872b521 |
| institution | Directory Open Access Journal |
| issn | 1002-0306 |
| language | zho |
| last_indexed | 2024-04-11T16:07:12Z |
| publishDate | 2022-04-01 |
| publisher | The editorial department of Science and Technology of Food Industry |
| record_format | Article |
| series | Shipin gongye ke-ji |
| spelling | doaj.art-5a9eab0157b54a1db6e2a9d0a872b5212022-12-22T04:14:47ZzhoThe editorial department of Science and Technology of Food IndustryShipin gongye ke-ji1002-03062022-04-0143728028510.13386/j.issn1002-0306.20210602422021060242-7Fluorescence Detection of Vanillin by Copper Doped Carbon Quantum DotsXiaojing SI0Luchen DENG1Xin XU2Li LI3Xia GONG4Department of Food Science, Shanghai Business School, Shanghai 200235, ChinaCollege of Qian Weichang, Shanghai University, Shanghai 200444, ChinaDepartment of Food Science, Shanghai Business School, Shanghai 200235, ChinaDepartment of Food Science, Shanghai Business School, Shanghai 200235, ChinaDepartment of Food Science, Shanghai Business School, Shanghai 200235, ChinaObjective: A fluorescence detection method based on copper doped carbon quantum dots(Cu-CDs) was developed for the determination of vanillin in food. Method: Cu-CDs, with stable performance, were prepared by one-step hydrothermal method using ascorbic acid as precursors and copper sulfate as metal dopant. The morphology, elementary composition and optical properties of the synthesized Cu-CDs were characterized by energy dispersive X-ray spectrometers, fourier transform infrared spectroscopy, ultraviolet and fluorescence techniques. The quenching effect of the Cu-CDs with vanillin was further studied. Results: C and Cu were evenly distributed in Cu-CDs solution. The Cu-CDs were rich in functional groups such as amino, carboxyl and hydroxyl groups, indicating that Cu-CDs had good water solubility. It was also found that vanillin had strong fluorescence quenching effect on Cu-CDs in the pH7.0 KH2PO4-K2HPO4 buffer solution，and the concentration of tetracycline in the range of 1～400 μmol/L showed a good linear relationship with the fluorescence quenching intensity of Cu-CDs, and the linear equation was y=0.0045x+0.1934（R2=0.9917）, the detection limit was 0.33 μmol/L. What’s more, it was applied to the determination of vanillin in food samples, the recovery was 98%~110%. Conclution: The method for the determination of vanillin has the advantages of low cost, high specificity, simple operation, and a good application prospect.http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2021060242copper doped carbon quantum dotshydrothermal methodfluorescence quenchingvanillin |
| spellingShingle | Xiaojing SI Luchen DENG Xin XU Li LI Xia GONG Fluorescence Detection of Vanillin by Copper Doped Carbon Quantum Dots Shipin gongye ke-ji copper doped carbon quantum dots hydrothermal method fluorescence quenching vanillin |
| title | Fluorescence Detection of Vanillin by Copper Doped Carbon Quantum Dots |
| title_full | Fluorescence Detection of Vanillin by Copper Doped Carbon Quantum Dots |
| title_fullStr | Fluorescence Detection of Vanillin by Copper Doped Carbon Quantum Dots |
| title_full_unstemmed | Fluorescence Detection of Vanillin by Copper Doped Carbon Quantum Dots |
| title_short | Fluorescence Detection of Vanillin by Copper Doped Carbon Quantum Dots |
| title_sort | fluorescence detection of vanillin by copper doped carbon quantum dots |
| topic | copper doped carbon quantum dots hydrothermal method fluorescence quenching vanillin |
| url | http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2021060242 |
| work_keys_str_mv | AT xiaojingsi fluorescencedetectionofvanillinbycopperdopedcarbonquantumdots AT luchendeng fluorescencedetectionofvanillinbycopperdopedcarbonquantumdots AT xinxu fluorescencedetectionofvanillinbycopperdopedcarbonquantumdots AT lili fluorescencedetectionofvanillinbycopperdopedcarbonquantumdots AT xiagong fluorescencedetectionofvanillinbycopperdopedcarbonquantumdots |