Moisture sorption characteristics of crystalline and amorphous 2'-fucosyllactose, a human milk oligosaccharide

文献类型： 外文期刊

第一作者： Ahn, Sungahm

作者： Ahn, Sungahm;Chung, Donghwa;Ahn, Sungahm;Chung, Hee;Chung, Donghwa;Zhao, Dong;Chung, Donghwa

作者机构：

关键词： 2 '-Fucosyllactose; Moisture sorption; Crystallisation; Deliquescence; Stickiness

期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）

ISSN： 0308-8146

年卷期： 2025 年 468 卷

页码：

收录情况： SCI

摘要： The moisture sorption characteristics of crystalline and amorphous forms of 2 '-fucosyllactose (2 '-FL) were investigated and compared with those of two forms of lactose. The moisture sorption isotherms showed that, relative to crystalline alpha-lactose monohydrate (alpha-LM), crystalline 2 '-FL was more susceptible to moisture sorption. Crystalline 2 '-FL exhibited a lower deliquescence point (89.8 %) but threefold greater water solubility (57.1 %) than crystalline alpha-LM at 25 degrees C. Time-dependent moisture sorption, X-ray diffraction, and scanning electron microscopy analyses confirmed that amorphous 2 '-FL underwent moisture-induced crystallisation (similar to amorphous lactose), but required more humid conditions (a(w) > 0.53; a(w) > 0.33 for amorphous lactose) due to lower molecular mobility. Dynamic oscillatory rheology showed that amorphous 2 '-FL exhibited a higher sticky point temperature (T-s) compared with amorphous lactose at any given a(w), and T-s decreased from 78.9 degrees C to 43.6 degrees C as a(w) increased from 0.23 to 0.53 due to the plasticizing effect of moisture.

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