Development of Analytical Methods for Determination of β-Carotene in Pumpkin (Cucurbita maxima) Flesh, Peel, and Seed Powder Samples

Table 4

Analytical parameters of the proposed methods such as R², LODs, LOQs, RSDs, and recoveries compared with the previously published methods.

Methods	Linearity range (µg/mL)	R^2	LOD (µg/mL)	LOQ (µg/mL)	RSD (%)	Recovery (%)	Reference
UV-VIS	0.1–12.0	0.999	0.034	0.10	1.5–11	83–93	This study
UV-VIS	1–8	0.999	0.04	0.11	6.4	100	[7]
UV-VIS	0.015–8	0.994	NR	NR	3.4–8.9	67.8–98.8	[22]
NIR	12.5–250	0.999	3.400	10.2	1.8–11	92–96	This study
NIR	0–24	0.81	NR	NR	NR	NR	[23]
NIR	2.3–28	0.81	NR	NR	NR	NR	[24]
FTIR	4–100	0.999	1.320	3.97	0.7–10	95–96	This study
FTIR	1.8–6.6	0.91	NR	NR	NR	NR	[25]
FTIR	183–2137	0.95	NR	NR	NR	NR	[16]

NR = not reported.