Table 4.

A list of methods and techniques used for determinate the composition in quelite species.

Compounds	Methods of Determination/Identification	Species Evaluated	Ref.
Minerals	Atomic absorption spectrophotometry (AAS)	A. hybridus, A. viridis. A. spinosus, C. chaymansa, C. berlandieri, P. oleracea	[15,54,55,68,70]
	Inductively coupled plasma-optical emission spectrometry (ICP-OES) and ICP-mass spectrometry (ICP-MS)	P. oleracea, C. chaymansa, C. berlandieri, C. acnotifolius, C. longirostrata.	[49,64,72]
Amino acids	High-performance liquid chromatography (HPLC)	P. oleracea	[72]
Vitamin A, C, α-tocopherol, phenols, carotenoids, flavonoids, betalains, betacyanins, saponins	UV-vis spectrophotometry and HPLC-DAD/HPLC-MS	P. oleracea, C. chaymansa, B. nelumbiifolia, A. cruentus, A. hypochondriacus, A. caudatus, A. viridis, A. spinosus, A. hybridus, C. berlandieri, C. lingirostrata, C. nuttallie	[15,47,48,49,54,60,65,68,70,72,73]
Phenolic compounds and profiles	High-performance liquid chromatography with diode array detection (HPLC-DAD), ultrahigh-performance liquid chromatography with diode array detection (UHPLC-DAD) and gas chromatography-mass spectrometry (GC-MS)	C. ambrosioides, C. chaymansa, A. viridis, A. cruentus, A. hypochondriacus, A. caudatus	[47,55,73,74]
Organic acids	Ultrafast liquid chromatography coupled to a photodiode array detector (UFLC-PDA) and HPLC-DAD	C. ambrosioides, B. nelumbiifolia	[60,75]