Determination of Free Amino Acids in Three Species of Duckweed (Lemnaceae)

Table 2

The precursor ions, product ions, declustering potential, and collision energy of amino acids.

Number	Compound	Precursor ion	Product ion	DP (V)	CE (V)
1	Tyr	182.0	91.1	60	37
2	Ala	90.0	44.1	50	14
3	Glu	148.1	84.0	60	21
4	Phe	166.1	120.1	60	19
5	His	156.1	110.3	80	20
6	Ile	132.1	86.1	50	14
7	Asp	134.1	74.0	50	19
8	Lys	147.0	84.1	60	23
9	Gly	76.1	29.9	40	16
10	Val	118.1	71.9	50	15
11	Cit	176.2	70.0	60	31
12	GABA	104.1	86.8	50	14
13	Cys2	241.1	73.9	80	40
14	Pro	116.0	70.1	60	22
15	Trp	205.1	146.0	50	24
16	Leu	132.1	86.1	50	14
17	Arg	175.2	70.2	90	30
18	Cys	122.1	59.0	40	32
19	Hpro	132.1	86.1	60	20
20	Met	150.1	103.9	60	14
21	Thr	120.1	74.1	40	14
22	Asn	133.1	74.0	60	21
23	Gln	147.0	84.1	60	23
24	Ser	106.0	60.1	60	15