Table 1.

Chromatographic, UV-visible, and MS characteristics of main carotenoids from tissues of Honduran white bats E. alba

Peak	Carotenoid	tR (min)	λmax (nm)	[M+H]+*	Main product ions†
1 (L, E+n-l)‡	Lutein	15.7	420, 444, 472	569.4335 (−3.1/28.8)	551.4281 [M+H-18]+; 495.3642
2 (E+n-l)	Dilauroyl-5,6-epoxy-lutein	33.8	418, 443, 469	949.7668 (2.6/42.3)	931.7601 [M+H-H2O]+; 749.5791 [M+H-FA]+
					549.4184 [M+H-2FA]+
3 (E+n-l)	Unknown¶	35.3	420, 444, 472	—	—
4 (E+n-l)	Lauroyl-myristoyl-5,6-epoxy-lutein	36.2	418, 443, 469	977.7970 (−1.4/39.2)	959.7912 [M+H-H2O]+; 777.6150 [M+H-FA]+
					749.5890 [M+H-FA]+; 549.4179 [M+H-2FA]+
5 (E+n-l)	Myristoyl-oleyl-5,6-epoxy-lutein	37.1	418, 443, 469	1,059.8695 (−2.9/45.6)	1,041.8592 [M+H-H2O]+; 831.6697 [M+H-FA]+
					777.6196 [M+H-FA]+;549.4162 [M+H-2FA]+
6 (E+n-l)	Lauroyl-linoleoyl-lutein	45.5	420, 444, 472	1,013.8339 (−1.96/29.3)	995.8237 [M+H-H2O]+; 813.6589 [M+H-FA]+
					733.5929 [M+H-FA]+; 533.4187 [M+H-2FA]+
7 (E+n-l)	Palmitoyl-linoleoyl-lutein§	46.3	420, 444, 472	1,067.8813 (1.74/30.2)	1,049.9804 [M+H-H2O]+; 811.6524 [M+H-FA]+
					789.6613 [M+H-FA]+; 533.4249 [M+H-2FA]+
8 (E+n-l)	Palmitoyl-linoleoyl-lutein§	47.0	420, 444, 472	1,067.8859 (1.84/29.5)	1,049.9797 [M+H-H2O]+; 811.6537 [M+H-FA]+
					789.6595 [M+H-FA]+; 533.4262 [M+H-2FA]+
9 (E+n-l)	Palmitoyl-linoleoyl-lutein§	47.5	420, 444, 472	1,067.8806 (1.06/32.8)	1,049.9992 [M+H-H2O]+; 811.6529 [M+H-FA]+
					789.6604 [M+H-FA]+; 533.4236 [M+H-2FA]+
10 (E+n-l)	Oleyl-linoleoyl-lutein	48.4	420, 444, 472	1,095.9183 (1.35/19.8)	1,077.9015 [M+H-H2O]+; 813.6593 [M+H-FA]+
					815.6758 [M+H-FA]+;533.4278 [M+H-2FA]+

^*m/z experimental value of the molecular ion. Numbers in parenthesis are mass error in ppm and SigmaFit value.

^†Main products ion arising from MS²-based reactions.

^‡Peak present in liver extract (L) and/or in ears+nose-leaf (E+n-l) extract.

^¶Peak not identified.

^§Trans and cis isomers.