Protease-inhibiting, molecular modeling and antimicrobial activities of extracts and constituents from Helichrysum foetidum and Helichrysum mechowianum (compositae)

Table 4 LC/MS data, deprotonated and protonated molecules (m/z) for peaks, including the retention times (Rt), MS/MS experiments of the constituents found in MeOH extract of Helichrysum mechowianum and Helichrysum foetidum

Helichrysum mechiowianum				Helichrysum foetidum
Rt (min.)	HR-MS (m/z) from [M-H]⁻,	Molecular formula	Identified compounds by ESIMS	Rt (min.)	HR-MS (m/z) from [M-H]⁻, [M + H]⁺, [M + K]⁺ (%)	Molecular formula	Identified compoundsby ESIMS
9.1	191.055777[M-H]⁻	C₇H₁₂O₆	quinic acid	16.1	455.0954180 [M + Na]⁺ 431.0992290 [M-H]⁻	C₂₁H₂₀O₁₀	apigenin-7-O-β-glucoside
9.7	353.087674 [M-H]⁻	C₁₆H₁₈O₉	chlorogenic acid	17.1	487.0992980 [M + K]⁺447.1293680 [M-H]⁻	C₂₂H₂₄O₁₀	6′-methoxy-2′,4-dihydroxychalcone -4′-O-β-D-glucoside
10.2	193.050282[M-H]⁻	C₁₀H₁₀O₄	ferulic acid	18.6	269.0449150 [M-H]⁻	C₁₅H₁₀O₅	Apigenin
13.9/15.0/15.6	529.135391 [M-H]⁻	C₂₅H₂₄O₁₂	Mixture of three dicaffeoyl quinic acid	19.5	287.0919010 [M-H]⁻	C₁₆H₁₆O₅	6′-methoxy-2′,4, 4′-trihydroxychalcone
15.7/16.3/16.6	529.135391 [M-H]⁻	C₂₆H₂₆O₁	Mixture of thtree dicaffeoyl quinic acid methyl ether	21.4	301.2166660 [M-H]⁻	C₂₀H₃₀O₂	kaur-16-en-18-oic acid (5β,8α,9β,10α,13α)

ISSN: 2661-801X