Chemometrics coupled with ultraviolet spectroscopy: a tool for the analysis of variety, adulteration, quality and ageing of apple juices
| Autor: | Zhipeng Song, Ling Xu, Zhengdong Jiang, Jia-dong Chang, Jialei Zhang, Hongfei Lu, Nitin Mantri, Hong Zheng |
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| Rok vydání: | 2016 |
| Předmět: |
Adulterant
chemistry.chemical_classification Chemistry 010401 analytical chemistry 04 agricultural and veterinary sciences Vegetable Juices Ascorbic acid 040401 food science 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Reducing sugar Chemometrics 0404 agricultural biotechnology Ultraviolet visible spectroscopy Soluble solids Food science Sugar Food Science |
| Zdroj: | International Journal of Food Science & Technology. 51:2474-2484 |
| ISSN: | 0950-5423 |
| DOI: | 10.1111/ijfs.13229 |
| Popis: | This study demonstrates the use of UV spectroscopy (UV) in combination with chemometrics as a simple and feasible approach for analysis of variety, adulteration, quality and ageing of apple juice. The results show that PCA-UV is adequate to differentiate apple juice varieties and adulteration. The percentage of the adulterant can be detected by PLSR-UV with RMSE 0.9980. For the evaluation of juice quality, PLSR-UV (RMSE=0.2555-2.3448; R-2=0.7276-0.9816) is recommended for the prediction of soluble solids, ascorbic acid, total flavonoids, total sugar and reducing sugar, whilst PCR-UV (RMSE=0.0000-2.7426; R-2=0.7073-1.0000) is adequate for the prediction of pH and antioxidant activity. In addition, PLSR-UV may be used to predict the storage time with RMSE=0.4681day and R-2=0.9832. Therefore, UV coupled with chemometrics has potential to be developed as a portable tool for the detection of variety, adulteration, quality and ageing of not only apple juices, but also other fruit and vegetable juices. |
| Databáze: | OpenAIRE |
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