Experimental: All oligosaccharides (Laminaritetraose, Stachyose, α-Cyclodextrin, β-Cyclodextrin, γ-Cyclodextrin) were commercially available items that were used without further purification. Each oligosaccharide standard solution was dissolved in water. 2,5-Dihydroxybeozoic acid (DHB) was dissolved in 40% ethanol at a concentration of 10 mg/mL. Next, the oligosaccharides standard solution and matrix solution were mixed together 1:1 by volume. Afterwards, 0.5 μL of this mixture was placed on the MALDI target plate. Finally, the dried sample was measured using the JMS-S3000 SpiralTOF-TOF.