ZHAO Ling-zhi,ZHAO Liu,ZHANG Xiao-qing,KOU Zhang-wen,WEI Shi-nan.Detection of α-Glucosidase by a Smartphone Assisted Dual-probe Colorimetric Method[J].Journal of Instrumental Analysis,2024,43(06):905-912.
ZHAO Ling-zhi,ZHAO Liu,ZHANG Xiao-qing,KOU Zhang-wen,WEI Shi-nan.Detection of α-Glucosidase by a Smartphone Assisted Dual-probe Colorimetric Method[J].Journal of Instrumental Analysis,2024,43(06):905-912. DOI: 10.12452/j.fxcsxb.23122701.
Detection of α-Glucosidase by a Smartphone Assisted Dual-probe Colorimetric Method
This study exploited 3,3',5,5'-tetramethylbenzidine(TMB
)
and Rhodamine B as chr
omogenic probes for α-glucosidase concentration analysis via a colorimetric detection method. On this basis,a smartphone assisted strategy was designed to detect α-glucosidase activity by RGB value analysis of images. The results showed that the absorbance of Fe
3+
-TMB- Rhodamine B system was linearly related to
α
-glucosidase concentration in the range of 20-100 U/L,and the detection limit was 3.3 U/L. The RGB values of the sample photos and fluorescence photos were analyzed by photoshop,which showed a linear relationship with α-glucosidase activity in the range of 10-100 U/L,the detection limits were 2.5 U/L and 1.2 U/L for α-glucosidase,respectively. The method has been successfully used to detect α-glucosidase inhibitor acarbose and to quantitatively detect α-glucosidase activity in spiked fetal bovine serum. The smartphone assisted detection method provided a simple,quick and accurate method for clinical analysis of
α
-glucosidase and rapid screening of enzyme inhibitors.
关键词
α-葡萄糖苷酶抗坏血酸智能手机比色法3,3',5,5'-四甲基联苯胺(TMB)罗丹明 B
Keywords
α-glucosidaseascorbic acidsmartphone assisted colorimetry3,3',5,5'-tetramethylbenzidine(TMB)Rhodamine B
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School of Life and Environmental Sciences,Deakin University,Geelong VIC
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