Abstract
Commercial pectin production is based on vacuum evaporation and alcohol precipitation (VEAP) using large quantities of expensive and flammable alcohol. This process has high production costs that have greatly limited the commercial use of refined pectins. This study demonstrates a new technology using a diaultrafiltration (DUF) process in a pilot plant, which is a low-cost, green, and ecologically friendly way to produce pectin. In terms of the structure and quality of their products, a comparison of the two methods suggest that DUF provides significant (p < 0.05) flux enhancement, high pectin purity, and separation of the main pectin backbones, with higher molar mass (Mw) and less polydispersity (Mw/Mn) of pectin samples. An analysis of the 1D and 2D NMR spectra reveals that the DUF process removes most free impurities extracted along with the pectin macromolecules, making this method preferable to use. An analysis of power and chemical consumption demonstrates that the new process is preferable over existing methods due to lower energy consumption and higher product quality. It also possesses a flexible technical design that allows it to produce semi-products from various raw materials.
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