| Abstract: | Pectin solutions obtained in the presence of HNO3, HCl, H2SO4, and H3PO4 have been studied by viscometry, turbidity spectra, and ultracentrifugation. Cotton pectin extracts with phosphoric acid proved to be the most unstable. The molecular masses of pectins obtained from various materials (apple, lemon, and grape press residues, beet pulp, and cotton boll valves) ranged between 14,000 and 37,000. The polydispersity of the pectins isolated was studied.Tashkent State Technical University, fax (3712) 29 48 36. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 349–353, May–June, 1998. |
