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- W2109430893 abstract "Low molecular weight chitosans (LMWC) of different molecular weight (4.1–5.6 kDa) were obtained by the depolymerization of chitosan using papain (from Carica papaya latex, EC. 3.4.22.2) at optimum conditions of pH 3.5 and 37 °C for 1–5 h. Scanning electron microscopy (SEM) showed ∼15-fold decrease in the particle size after depolymerization. Decrease in the molecular weight was associated with decrease in the degree of acetylation (DA) as evidenced by circular dichroism (CD), FT-IR and solid-state CP-MAS 13C-NMR data. X-ray diffraction pattern revealed slight decrease in the crystallinity index (CrI) whereas the 13C-NMR data showed molecular inhomogeneity. LMWC showed lytic effect towards Bacillus cereus and Escherichia coli more efficiently than native chitosan. The growth inhibitory effect was maximal towards B. cereus, with minimum inhibitory concentration (MIC) of 0.01% (w/v)." @default.
- W2109430893 created "2016-06-24" @default.
- W2109430893 creator A5077502937 @default.
- W2109430893 date "2004-01-22" @default.
- W2109430893 modified "2023-10-04" @default.
- W2109430893 title "Low molecular weight chitosans: preparation with the aid of papain and characterization" @default.
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- W2109430893 doi "https://doi.org/10.1016/j.bbagen.2003.11.004" @default.
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