Extraction, Purification, Functional Properties and Antioxidant Activity Analysis of Donkey Serum Albumin from <i>Asini Corii Colla</i>

SONG Lulu; LI Yunfei; LIU Xinyuan; XU Ruiqi; ZHENG Guofang; QIN Nan

doi:10.13386/j.issn1002-0306.2023120165

Volume 45 Issue 23

Nov. 2024

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Science and Technology of Food Industry > 2024 > 45(23): 179-188. > DOI: 10.13386/j.issn1002-0306.2023120165

SONG Lulu, LI Yunfei, LIU Xinyuan, et al. Extraction, Purification, Functional Properties and Antioxidant Activity Analysis of Donkey Serum Albumin from Asini Corii Colla[J]. Science and Technology of Food Industry, 2024, 45(23): 179−188. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2023120165.

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Extraction, Purification, Functional Properties and Antioxidant Activity Analysis of Donkey Serum Albumin from Asini Corii Colla

College of Traditional Chinese Medicine and Food Engineering, Shanxi University of Traditional Chinese Medicine, Jinzhong 030619, China

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Received Date: December 17, 2023
Available Online: September 22, 2024

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Objectives: This study was to optimize the extraction and purification process parameters of donkey serum albumin (DSA) from Asini Corii Colla, to compare the emulsification, foaming properties and antioxidant activity of DSA before and after purification, and to identify the purity of DSA. Methods: In this study, Asini Corii Colla was used as raw material and DSA extraction rate was used as the response value, the optimum extraction process of salting-out-ultrasonic assisted extraction was determined by single factor and Box-Behnken response surface design. The concentration of DSA in Asini Corii Colla was purified by Sephadex G-75, and the purity of DSA in purified Asini Corii Colla was identified by SDS-PAGE gel electrophoresis. The water holding capacity, oil holding capacity, emulsification and foaming properties of DSA in Asini Corii Colla before and after purification were compared. Finally, DSA was used to analyze its antioxidant activity in vitro by scavenging ability of superoxide anion radical, ABTS⁺ radical, DPPH radical and hydroxyl radical. Results: The optimum extraction process parameters of DSA in Asini Corii Colla were as follows: The ratio of dissolved solution was 1:11 g/mL, the ratio of material to liquid was 1:8.3 g/mL, the ultrasonic power was 400 W, and the ultrasonic time was 31 minutes. Under these conditions, the extraction rate of DSA was 49.57%, and the purity of DSA after purification could reach 83.7%. The results of functional properties showed that the water holding capacity, oil holding capacity, emulsification and foaming properties of DSA purified under different pH conditions were enhanced compared with those before purification. The results of antioxidant activity in vitro showed that DSA had strong antioxidant activity in vitro. When the concentration of DSA was 10.0 mg/mL, the scavenging rates of superoxide anion radical, ABTS⁺ radical, DPPH radical and hydroxyl radical were 73.39%, 83.61%, 71.24% and 83.79%, respectively. Conclusions: The extraction, purification and identification techniques of DSA in Asini Corii Colla are simple, rapid, and high feasibility, which provides a certain reference for the high-value utilization of Asini Corii Colla and the development of functional food.
- Asini Corii Colla,
- donkey serum albumin,
- purification,
- antioxidation,
- functional properties

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