Comparing novel and conventional methods for vitamin sensing.

Sr. no.	Technique	Vitamin	Limit of detection (ng mL−1)	References
1	Colorimetric technique	Vitamin B1	7.0 × 103	34
2	Surface plasmon resonance sensor	Vitamin B2	13.5 × 10−4	35
3	Ultraviolet-visible spectroscopy	Vitamin B2	6.0 × 106	36
4	Albumin-stabilized fluorescent copper nanocluster	Vitamin B6	1.83 × 108	37
5	Surface plasmon resonance sensor	Vitamin B9	2.5 × 10−4	35
6	High-performance liquid chromatography-photodiode array	Vitamin B12	2.85	38
7	Fluorescence based sensor	Vitamin B12	6.9 × 104	39
8	Surface plasmon resonance sensor	Vitamin B12	2.5 × 10−4	35