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Primary alcohol group of 1-monostearoyl glycerol (1-MS) was oxidized using 2,2,6,6-tetramethyl-1-piperidineoxoammonium ion (TEMPO)/sodium hypochlorite/sodium bromide at 25oC and pH 10.8. Regio-selective oxidation of primaryalcohol without oxidation of secondary alcohol group was confirmed by chemical shift at 175 ppm and no chemical shiftsbetween 198-205 ppm in 13C-NMR spectra, and a sharp peak at 1,600 cm?1 an IR spectra. Water solubility and dispersibility ofthe oxidized 1-MS increased from 0.5 to 7.3 mg/mL and from 42 to 90%, respectively. Emulsion formed by oxidized 1-MShad higher emulsion stability. Results revealed that oxidized 1-MS is more suitable for preparation of emulsion containinghigh concentration of water than for that containing oil.