Contribution of secondary bonds to the storage stability of ready-to-eat sea cucumber

Qiaoji Tian; Lin Lin; Xin Qi; Lulu Zhu; Li Hao; Ling Wu; Jinhua Wang; Hu Hou

doi:10.1016/j.foodchem.2022.133061

Contribution of secondary bonds to the storage stability of ready-to-eat sea cucumber

Food Chem. 2022 Sep 30:389:133061. doi: 10.1016/j.foodchem.2022.133061. Epub 2022 Apr 25.

Authors

Qiaoji Tian¹, Lin Lin¹, Xin Qi¹, Lulu Zhu¹, Li Hao¹, Ling Wu², Jinhua Wang², Hu Hou³

Affiliations

¹ College of Food Science and Engineering, Ocean University of China, No. 5, Yu Shan Road, Qingdao, Shandong Province 266003, PR China.
² Wuhu Midea Intelligent Kitchen Appliance Manufacturing Co., Ltd., Wuhu, Anhui Province 241012, PR China.
³ College of Food Science and Engineering, Ocean University of China, No. 5, Yu Shan Road, Qingdao, Shandong Province 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong Province 266237, PR China. Electronic address: houhu@ouc.edu.cn.

PMID: 35526283
DOI: 10.1016/j.foodchem.2022.133061

Abstract

To explore the contribution of secondary bonds on storage stability of RSC, urea, n-propanol and sodium nitrite (NaNO₂) were used for the breakdown of hydrogen bonds, hydrophobic bonds, side-chain groups, respectively. The impact of the breakdown of secondary bonds before and after storage on texture properties and microstructure were investigated. The breakdown of hydrogen bonds, especially before storage, significantly reduced the hardness (from 3.12 to 2.21 N), chewiness (from 1.82 to 1.05 mJ), and springiness (from 2.57 to 1.57 mJ) of RSC, while the breakdown of hydrophobic bonds and side-chain groups had a slight effect. Similarly, degradation of collagen fibers by breaking hydrogen bonds before storage was more serious than other groups. Furthermore, moisture content and water activity decreased and the degradation degree of collagen in RSC body wall increased with hydrogen bonds breaking. The results showed that hydrogen bonds were essential for the storage stability of RSC.

Keywords: Degradation; Hydrogen bonds; Sea cucumber; Secondary bonds; Storage stability.

MeSH terms

Animals
Collagen
Hardness
Hydrogen Bonding
Sea Cucumbers* / chemistry
Water / chemistry

Substances

Water
Collagen