Volume 46, Issue 11 e14174
ORIGINAL ARTICLE

The immune-enhancing effect and in vitro antioxidant ability of different fractions separated from Colla corii asini

Guowei Zhang

Guowei Zhang

Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou Normal University, Quanzhou, China

State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China

Contribution: Data curation, Formal analysis, Methodology, Writing - original draft

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Fengxian Guo

Fengxian Guo

Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou Normal University, Quanzhou, China

Contribution: ​Investigation, Validation, Visualization

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Maomao Zeng

Maomao Zeng

State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China

Contribution: Resources, Software, Validation

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Zhaojun Wang

Zhaojun Wang

State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China

Contribution: Software, Validation, Visualization

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Fang Qin

Fang Qin

State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China

Contribution: Formal analysis, ​Investigation, Methodology

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Jie Chen

Jie Chen

State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China

Contribution: Conceptualization, Formal analysis, ​Investigation

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Zongping Zheng

Corresponding Author

Zongping Zheng

Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou Normal University, Quanzhou, China

Correspondence

Zongping Zheng and Zhiyong He, Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou Normal University, Quanzhou 362000, Fujian, China.

Email: [email protected] (Z. Z.) and Email: [email protected] (Z. H.)

Contribution: Resources, Validation, Visualization

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Zhiyong He

Corresponding Author

Zhiyong He

Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou Normal University, Quanzhou, China

State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China

Correspondence

Zongping Zheng and Zhiyong He, Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou Normal University, Quanzhou 362000, Fujian, China.

Email: [email protected] (Z. Z.) and Email: [email protected] (Z. H.)

Contribution: ​Investigation, Methodology, Supervision, Writing - review & editing

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First published: 12 April 2022
Citations: 9

Guowei Zhang and Fengxian Guo contributed equally to this study.

Abstract

In this study, Colla corii asini (CCA) was fractionated into three fractions with different molecular weights using ultracentrifugation equipment. Components with a molecular weight of >10 kDa in F1 accounted for 81.90%, whereas that in F2 and F3 was 15.63% and 0.94%, respectively. The immunomodulatory activity of CCA fractions was investigated using RAW264.7 cell model and their antioxidant abilities were evaluated by 2′-Azinobis-(3-ethylbenzthiazoline-6-sulphonate) (ABTS) and ferric-reducing antioxidant power (FRAP) assay. The results indicated that RAW264.7 cells treated with F1 released the highest level of nitric oxide, reactive oxygen species, interleukin-6, and tumor necrosis factor-α. The ABTS and FRAP value of F1 were 65.81% and 29.33 μM TE/L, respectively, which were 22.53%, 128.44% and 43.72%, 132.16% higher than that of F2 and F3, respectively. These results suggested that components with a molecular weight of >10 kDa in CCA had stronger immunomodulatory and antioxidant ability, which would help develop the health food based on CCA.

Practical applications

Colla corii asini (CCA) is a famous protein-based traditional Chinese medicine and nutritional supplement. During the processing of CCA, the molecular weight (MW) of CCA collagen components changed dynamically due to the protein aggregation, degradation, and the Maillard reaction. Some studies have shown that the MW distribution of CCA was not uniform. However, the MW range of CCA components which has strong antioxidant and immunomodulatory activity is still not clear, and few studies have reported the mechanism of CCA's immunomodulatory activity and active ingredients. Therefore, it is important to figure out the characteristics of CCA components with stronger immunomodulatory and antioxidant ability, such as the MW distribution and chemical composition of CCA fractions. And this study will be great for the processing of CCA products which has better biological functions.

CONFLICT OF INTEREST

The authors declare that they have no conflicts of interest.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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