Method for quantifying stevioside by potassium ferricyanide-luminol chemiluminescence system
A steviol glycoside and chemiluminescence technology, which is applied in the detection field, can solve problems such as the unseen chemiluminescence determination of steviol glycosides, and achieve the effects of novel design, remarkable innovation and simple operation.
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[0027] 1 Instrument and equipment
[0028] 1.1 MPI-B multi-parameter chemiluminescence analysis and testing system (Xi'an Ruimai Electronics Co., Ltd.). Sampling, sample injection, experimental data collection and processing in the whole analysis process are all completed by MPI-B multi-parameter chemiluminescence analysis and test system software under Windows XP system.
[0029] 1.2UV-1600 ultraviolet-visible spectrophotometer: Beijing Rayleigh Analytical Instrument Company.
[0030] 2 Materials and reagents
[0031] 2.1 Materials: fresh stevia leaves, cultivated in this laboratory; steviol glycosides, Harbin Luye Technology Co., Ltd.
[0032] 2.2 Reagents: (1) Use 0.1mol / L NaOH as solvent to prepare different concentrations of Fe(CN) 3- 6 . 3-aminophthaloyl cyclic hydrazine (Luminol) is the product of Sigma Company (Na with pH value of 9.2 2 CO 3 -NaHCO 3 buffer solution preparation). (2) Standard solution of steviol glycosides (10mg / mL): weigh steviol glycosides a...
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