Conclusion
It has been attempted to show that the pectic substances as a group are of interest from the most varied points of view, and that all these points of view have contributed to our present knowledge. The structure and the colloidal behavior of the pectic substances are of interest to the chemist. In industry pectins are met with, either as filtering problems or as essential components of industrial products. But the pectins are, after all, plant products of the greatest interest to the botanist and to the physiologist who study their manifold functions in the plant, and the relation of chemical structure to these functions. From what has been said in the foregoing pages it is apparent, however, that for a complete understanding of pectic substances, much remains to be done, by both chemist and botanist.
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Bonner, J. The chemistry and physiology of the pectins. Bot. Rev 2, 475–497 (1936). https://doi.org/10.1007/BF02869919
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DOI: https://doi.org/10.1007/BF02869919