Research Article
Simultaneous Analysis of Ursolic Acid and Oleanolic Acid in Guava Leaves Using QuEChERS-Based Extraction Followed by High-Performance Liquid Chromatography
Figure 2
Effect of salt addition (a), extraction time (b), and sorbent amount (c) on the QuEChERS-based extraction of standard solutions.
(a) |
(b) |
(c) |