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 5

Optimized conditions for extraction of micro- and macroelements in fruit peel powder by UAE method.

Variables	Values	Optimized obtained value
Presonication time (min.)	5–15	5
Sonication time (min.)	2–20	6
Temperature (^°C)	30–90	60
Extracting agents
HNO3 (0.5 M), HNO3 (0.5 M)-HCl (1.0 M) [1 : 3] and HNO3 (0.5 M)-H2O2 (10%) [2 : 1]		HNO3 (0.5 M)-H2O2 (10%) [2 : 1]