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서성규(Seong Gyu SEO),문정선(Joung Sun MOON),신종암(Jong Agn SHIN),이원교(Won Kyo LEE),김상채(Sang Chai KIM) 전남대학교 수산과학연구소 1998 수산과학연구소논문집 Vol.7 No.-
To investigate the possibility as an organic acid treatment in the cultivating Porphyra, 21 species of organic acid were examined for the chemical characteristics, pH, the effect of concentration, dilution, salinity and mixed organic acid. L-, D-, DL-Aspartic acid and Fumaric acid were not soluble in water. 0.1M Oxalic acid has pH=1.55, this value is the lowest pH in the examined organic acids. Salt effect was observed in the same concentration of organic acid, that is, pH of solution was decreased with increasing the salinity of solvent. The linear relationship between pKa1 and pH was positive and correlation coefficient was r=0.9738. The synergic effect was not observed in the mixture of citric acid and oxalic acid. pH variation was simple with the relative amount of each component in mixed organic acid.