Visual Colorimetric Detection of Edible Oil Freshness for Peroxides Based on Nanocellulose
Foods, ISSN: 2304-8158, Vol: 12, Issue: 9
2023
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Most Recent News
Researcher at Jiangnan University Has Published New Study Findings on Food Research (Visual Colorimetric Detection of Edible Oil Freshness for Peroxides Based on Nanocellulose)
2023 MAY 23 (NewsRx) -- By a News Reporter-Staff News Editor at Chemicals & Chemistry Daily Daily -- Data detailed on food research have been
Article Description
Traditional methods for evaluating the edibility of lipids involve the use of organic reagents and complex operations, which limit their routine use. In this study, nanocellulose was prepared from bamboo, and a colorimetric reading strategy based on nanocellulose composite hydrogels was explored to monitor the freshness of edible oils. The hydrogels acted as carriers for peroxide dyes that changed color according to the freshness of the oil, and color information was digitized using UV-vis and RGB analysis. The sensitivity and accuracy of the hydrogel were verified using HO, which showed a linear relationship between absorbance and HO content in the range of 0–0.5 and 0.5–11 mmol/kg with R of 0.9769 and 0.9899, respectively, while the chromatic parameter showed an exponential relationship with R of 0.9626. Surprisingly, the freshness of all seven edible oil samples was correctly identified by the hydrogel, with linear correlation coefficients greater than 0.95 in the UV-vis method and exponential correlation coefficients greater than 0.92 in the RGB method. Additionally, a peroxide value color card was established, with an accuracy rate of 91.67%. This functional hydrogel is expected to be used as a household-type oil freshness indicator to meet the needs of general consumers.
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