Volume 100, Issue 5 pp. 1059-1070
RESEARCH ARTICLE

Preparation of starch-lipid complexes under wet grinding and its mechanism analysis

Ying Dong

Ying Dong

College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China

Engineering and Technology Center for Grain Processing in Shandong Province, Tai'an, Shandong, China

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Fu Xing

Fu Xing

Shandong Drug and Food Vocational College, Weihai, Shandong, China

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Yangyong Dai

Corresponding Author

Yangyong Dai

College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China

Engineering and Technology Center for Grain Processing in Shandong Province, Tai'an, Shandong, China

Correspondence Yangyong Dai and Hanxue Hou, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China.

Email: [email protected] and [email protected]

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Hanxue Hou

Corresponding Author

Hanxue Hou

College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China

Engineering and Technology Center for Grain Processing in Shandong Province, Tai'an, Shandong, China

Correspondence Yangyong Dai and Hanxue Hou, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China.

Email: [email protected] and [email protected]

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Wentao Wang

Wentao Wang

College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China

Engineering and Technology Center for Grain Processing in Shandong Province, Tai'an, Shandong, China

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Bin Wang

Bin Wang

College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China

Engineering and Technology Center for Grain Processing in Shandong Province, Tai'an, Shandong, China

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Hui Zhang

Hui Zhang

College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China

Engineering and Technology Center for Grain Processing in Shandong Province, Tai'an, Shandong, China

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Cheng Li

Cheng Li

College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China

Engineering and Technology Center for Grain Processing in Shandong Province, Tai'an, Shandong, China

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First published: 31 May 2023

Abstract

Background and Objective

Starch-lipid complexes prepared by using partially gelatinized starch were more helpful in reducing the digestibility of starchy foods. Wet grinding (WG) could improve grinding homogeneity and avoid dust explosions. Moreover, as an excellent plasticizer, water could promote the movement of starch molecules during grinding. Therefore, this paper investigated the effect of WG on the structure and properties of corn starch with and without lauric acid. And the formation mechanism of starch-lipid complexes under WG was explored.

Findings

WG caused continuous hydration and even partial gelatinization of the starch. After 30 min of WG, the relative crystallinity, resistant starch (RS) content, and ΔH of the starch were all reduced to the minimum which were 25.82%, 21.55%, and 0.99 J/g, respectively. When lauric acid was added, WG promoted the formation of starch-lipid complexes, and the RS content of starch reached the maximum (35.61%) after 30 min of WG.

Conclusion

Appropriate WG could promote the formation of more starch-lipid complexes with low swelling, low solubility, high thermal stability, and high antidigestibility.

Significance and Novelty

This study provided a theoretical basis for future research on the preparation of high-quality modified starch by WG.

CONFLICT OF INTEREST STATEMENT

The authors declare no conflict of interest.

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