Ultrasound-Assisted Extraction of Micro- and Macroelements in Fruit Peel Powder Mineral Supplement for Osteoporosis Patients and Their Determination by Flame Atomic Absorption Spectrometry

Table 6

Extraction and digestion method validation by using SRM (n = 6).

Element	SRM value	UAE ()	CAD ()	% Recovery (UAE/CAD)	texperimental
Microelements (μg ^−1)
Mn	54.1 ± 1.1	53.77 ± 1.01	53.77 ± 1.34	99.4/99.4	−0.226
Fe	82.7 ± 2.6	82.8 ± 0.64	82.8 ± 0.60	100.1/100.1	−0.421
Cu	5.69 ± 0.13	5.65 ± 0.36	5.79 ± 0.32	99.3/101.8	−1.505
Zn	12.45 ± 0.43	12.05 ± 0.58	11.95 ± 0.48	96.8/96.0	0.604
Macroelements (mg ^−1)
Mg	2.71 ± 0.12	2.67 ± 0.23	2.75 ± 0.18	98.5/98.5	−0.672
K	16.08 ± 0.21	16.52 ± 0.36	16.63 ± 0.24	102.7/103.4	−0.798
Ca	15.25 ± 0.10	15.34 ± 0.38	15.45 ± 0.41	100.6/101.3	−1.154

() = mean ± CI (), CI = confidence interval.