2 MATERIAL AND METHOD
2.1 Material
We performed UPLC-QTOF-MS/MS (Waters),
Oasis C18 Cartridge (Waters), Sonicator (Sonica),
Moisture Analyzer (Mettler Toledo), Vacuum
Rotary Evaporator (Heidolph), TLC (Camag), TLC
Visualizer (Camag), analytical scales (XX), flasks,
beaker glass, measuring cups, petri dishes, stirrer
bars, spatulas, dropper pipes, funnel, filter paper,
eppendorf, and computers.
Marsilea crenata Presl. Leaves were obtained
from Benowo village at Surabaya, ethanol 96%
(Merck), aquadest, dichloromethane (Merck),
acetonitrile (Merck) and formic acid (Merck).
2.2 Methods
2.2.1 Sample Preparation
The extract preparation was done by simplicia of
Marsilea crenata Presl. Leaves powder weighed
30 g and put into the Erlenmeyer flask, then
dissolved with 500 ml ethanol solvent with
replication 3 times (200 ml, 150 ml, 150 ml). Further
extraction is done with the help of ultrasonic waves
(> 20 kHz) for 6 minutes with 3 pauses every 2
minutes. Ethanol 96% extraction was performed by
single extraction. The extract was evaporated using a
Rotary evaporator, then stored in an oven with a
temperature of 40
0
C.
2.2.2 Extract Preparation to UPLC-QTOF-
MS/MS Analysis
Sample was injected to instrument UPLC MS/MS
5µl, and than chromathogram was obtained and the
data was processed by using software Masslynx so
that peak area, retention time, spectra m/z dan
elemental composition was obtained from each peak
area was detected. The next step, data interpretation
was done by using website Chemspider to get the
level of data similarity from chromagram and
spectra, so that the similarity explained above, we
can get the suitable IUPAC name and it can be
concluded that metabolit contain was in M.crenata
extract.
3 RESULT AND DISCUSSION
The extraction method used by ultrasonic assisted
extraction (UAE) which has advantages, among
others, accelerating the extraction process
(compared with conventional extraction eg
maceration), more time efficient, and can increase
the crude rendement rate of the extract. In addition,
ultrasonic extraction may also be used in the
extraction of heat resistant materials (Handayani et
al., 2016).
Fourty seven compounds in DCM blank and
Fifty compounds in methanol blank were obtained
from UPLC MS/MS analysis. Data obtained was
total ion of kromatogram (TIC) and 96 % ethanol
extract from Marsilea crenata Presl. leaves that was
processed by using software Masslynx so that peak
area, retention time, spectra m/z dan elemental
composition was obtained from each peak area was
detected. The next step, data interpretation was done
by using website Chemspider to get the level of data
similarity from chromagram and spectra, so that the
similarity explained above, we can get the suitable
IUPAC name.
Fifty major contain were tentatively assigned
based on their accurate masses, MS/MS
fragmentation patterns in methanol blank and Forty-
seven major contain in dichloromethane (DCM)
blank, in comparison to standard compounds and
references (Table 1 and 2).
The largest compound in 96% ethanol extract
leaves Marsilea crenata Presl. on methanol blank
with % area 23,3199 %; 11.9297% and 10.3549%
are unknown compounds where the chemspider
application does not recognize it or has never been
published. Whereas in the DCM blank on % area
37.6384 % is C
36
H
36
N
5
O
6
SCl after data
interpretation was done by using website
Chemspider and software Chemdraw so that
compound similarity 4-[(N-{2-[(6-Chloro-2-methyl-
4-quinolinyl)amino] ethyl}-N-[(4-methoxyphenyl)
sulfonyl] -β-alanyl) amino] -3-methoxy-N-
phenylbenzamide was obtained ; peak area 26.3455
% is C
38
H
38
N
5
O
11
Cl and suitable with compound
(1R, 13S, 16S, 17R, 28R) -28-Amino-20-chloro-
17,25-dihydroxy-5,8,10,24-tetramethoxy-N-methyl-
15,29, 31-trioxo-22-oxa-14,30,32-triazahexacyclo
14.14.2.218,21.12,6.123,27,07,12] hexatriaconta-2
(36), 3,5, 7,9,11,18,20,23 (33), 24,26,34-dodecaene-
13-carboxamide and we did not obtaine the
compound name that was not suitable with the
compound name reference. So that we catagorized
as unknown compound.
The activity of the major compound explained
above had non been obtained yet before. According
2