Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared Camera
A novel method was proposed for the determination of vitamin C (VC) using an infrared camera combined with the iodine-turbidimetric method. Based on the redox between VC and iodine, the residual iodine was measured using the turbidimetric method with an infrared camera to obtain VC content. The ligh...
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| Format: | Article |
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MDPI AG
2020-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/8/2655 |
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| author | Yi Miao Yuanyang Zhu Wenzhu Zhao Changshuai Jiao Hongwei Mo Xincheng Zhang Sheng Liu Hongwen Gao |
| author_facet | Yi Miao Yuanyang Zhu Wenzhu Zhao Changshuai Jiao Hongwei Mo Xincheng Zhang Sheng Liu Hongwen Gao |
| author_sort | Yi Miao |
| collection | DOAJ |
| description | A novel method was proposed for the determination of vitamin C (VC) using an infrared camera combined with the iodine-turbidimetric method. Based on the redox between VC and iodine, the residual iodine was measured using the turbidimetric method with an infrared camera to obtain VC content. The light emitted by the infrared light-emitting diode (LED) was absorbed and scattered when it penetrated the residual iodine suspension. The transmitted light was captured by the infrared camera to form a digital image and the responding color components and grayscale values were obtained. The obtained color components and log-grayscale were fitted to the VC concentration, and the fitted relation expressions were used to measure the unknown VC solution. A VC measuring device equipped with an infrared camera and processing software was designed to obtain the color components corresponding to the images of the iodine suspensions. Compared with the spectrophotometry, the method based on the color component of brightness had a higher accuracy for measuring the VC standard solution. For VC measurements in tomatoes, nectarines, and VC tablets, our proposed method was highly consistent with spectrophotometry. Therefore, this method could potentially be implemented in the determination of VC in fruits and tablets, or other foods. |
| first_indexed | 2024-03-10T20:30:54Z |
| format | Article |
| id | doaj.art-526bcf2178fd4b999104ee32785100a8 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T20:30:54Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-526bcf2178fd4b999104ee32785100a82023-11-19T21:23:27ZengMDPI AGApplied Sciences2076-34172020-04-01108265510.3390/app10082655Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared CameraYi Miao0Yuanyang Zhu1Wenzhu Zhao2Changshuai Jiao3Hongwei Mo4Xincheng Zhang5Sheng Liu6Hongwen Gao7College of Computer Science and Technology, Huaibei Normal University, Huaibei 235000, ChinaCollege of Computer Science and Technology, Huaibei Normal University, Huaibei 235000, ChinaCollege of Computer Science and Technology, Huaibei Normal University, Huaibei 235000, ChinaCollege of Computer Science and Technology, Huaibei Normal University, Huaibei 235000, ChinaCollege of Computer Science and Technology, Huaibei Normal University, Huaibei 235000, ChinaCollege of Computer Science and Technology, Huaibei Normal University, Huaibei 235000, ChinaCollege of Computer Science and Technology, Huaibei Normal University, Huaibei 235000, ChinaCollege of Environmental Science and Engineering, Tongji University, Shanghai 200092, ChinaA novel method was proposed for the determination of vitamin C (VC) using an infrared camera combined with the iodine-turbidimetric method. Based on the redox between VC and iodine, the residual iodine was measured using the turbidimetric method with an infrared camera to obtain VC content. The light emitted by the infrared light-emitting diode (LED) was absorbed and scattered when it penetrated the residual iodine suspension. The transmitted light was captured by the infrared camera to form a digital image and the responding color components and grayscale values were obtained. The obtained color components and log-grayscale were fitted to the VC concentration, and the fitted relation expressions were used to measure the unknown VC solution. A VC measuring device equipped with an infrared camera and processing software was designed to obtain the color components corresponding to the images of the iodine suspensions. Compared with the spectrophotometry, the method based on the color component of brightness had a higher accuracy for measuring the VC standard solution. For VC measurements in tomatoes, nectarines, and VC tablets, our proposed method was highly consistent with spectrophotometry. Therefore, this method could potentially be implemented in the determination of VC in fruits and tablets, or other foods.https://www.mdpi.com/2076-3417/10/8/2655food analysisanalytical methodvitamin Ciodine suspensioninfrared cameraimage processing |
| spellingShingle | Yi Miao Yuanyang Zhu Wenzhu Zhao Changshuai Jiao Hongwei Mo Xincheng Zhang Sheng Liu Hongwen Gao Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared Camera Applied Sciences food analysis analytical method vitamin C iodine suspension infrared camera image processing |
| title | Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared Camera |
| title_full | Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared Camera |
| title_fullStr | Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared Camera |
| title_full_unstemmed | Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared Camera |
| title_short | Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared Camera |
| title_sort | determination of vitamin c in foods using the iodine turbidimetric method combined with an infrared camera |
| topic | food analysis analytical method vitamin C iodine suspension infrared camera image processing |
| url | https://www.mdpi.com/2076-3417/10/8/2655 |
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