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Study of Conditions for Applying Surfactants in Crystalline Glucose Production

  • STORAGE AND PROCESSING OF AGRICULTURAL PRODUCTS
  • Published:
Russian Agricultural Sciences Aims and scope

Abstract

The successful application of available glucose crystallization techniques largely depends on the conditions of crystal nucleation. This study is conducted for upgrading nucleation techniques applied in glucose crystallization. According to the theory of crystallization, the nuclei formation rate heavily depends on the solution’s surface tension. Another point of theoretical and practical interest is the role of surface tension in glucose crystallization. As established by tests, the surface tension of glucose solutions increases with an increase in the dry matter content and drop in temperature. In the course of testing aliphatic alcohols as surfactants, it was found out that the solution surface tension got weaker by 150%. The accelerating influence of those alcohols on the nucleation of crystals showed in the shortening of the induction period from 210 to 120 min, respectively, in pure solutions and in the presence of surfactants. According to the tests of various kinds of seed crystals, large (>200 μm) and small (<60 μm) alcohol-soaked hydrate glucose crystals were the most efficient crystals for crystallizing anhydrous glucose. An efficient technique of preparing seed crystals with alcohol without decanting at storage and lumping with the injection into a thick glucose syrup is developed. The suggested technique allows spending much less glucose on seed, improving crystallization conditions, and enhancing the microbial purity quality of glucose.

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Correspondence to L. S. Khvorova.

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The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.

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Translated by S. Kuznetsov

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Khvorova, L.S., Andreev, N.R. & Lukin, N.D. Study of Conditions for Applying Surfactants in Crystalline Glucose Production. Russ. Agricult. Sci. 46, 90–93 (2020). https://doi.org/10.3103/S1068367420010048

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  • DOI: https://doi.org/10.3103/S1068367420010048

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