Citation: Wang Haiyan, Song Chao, Zhang Zhengyong, Xie Weiliang, Li Liping, Liu Jun, Sha Min. Simultaneous Determination of Three Artificial Sweeteners Using UV Spectroscopic Combined with Local Partial Least Squares Regression Method[J]. Chemistry, ;2016, 79(8): 744-748. shu

Simultaneous Determination of Three Artificial Sweeteners Using UV Spectroscopic Combined with Local Partial Least Squares Regression Method

Wang Haiyan ^1,2 ,
Song Chao ¹ ,
Zhang Zhengyong ^1,2 ,
Xie Weiliang ^1,2 ,
Li Liping ³ ,
Liu Jun ^1,2 ,
Sha Min ^1,2,,

1.
1. School of Management Science & Engineering, Nanjing University of Finance & Economics, Nanjing 210046;
2.
2. Jiangsu Province Institute of Quality & Safety Engineering, Nanjing 210046;
3.
3. School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing 210094

Corresponding author: Sha Min,
Received Date: 19 January 2016
Available Online: 18 March 2016
Fund Project:

Acesulfame-K, aspartame and saccharin sodium are commonly used as food flavoring agents. All of them show strong absorptions in the UV spectral region which are seriously overlapped. This paper reports simultaneous determination of them using UV spectroscopic combined with chemometric methods. Firstly, partial least squares regression (PLSR) was used, the total relative deviation was 7.01%. Secondly, PLSR combined with the characteristic peaks were employed, the total relative deviation was 4.67%. Lastly, local partial least squares regression (LPLSR) combined with the characteristic peaks were employed for the design of a model. The characteristic peaks of UV spectra of calibrating samples were chose as the independent variable factor, and LPLSR was used in data processing. Compared with PLSR method, the total relative deviation of LPLSR method is smaller, which is only 3.05%. Finally, the model was used to the concentration prediction of beverage samples with satisfactory results. The linear range of acesulfame-K, aspartame and saccharin sodium is 1.0~30.0 mg/L, 1.0~10.0 mg/L and 1.0~10.0 mg/L respctively.
- UV spectroscopic,
- Acesulfame-K,
- Aspartame,
- Saccharin sodium,
- Local partial least square regression
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