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Zhu X, Zhao YF, Wen HJ, Lu Y, You S, Herman RA, Wang J. Silkworm pupae protein co-degradation by magnetic nanoparticles immobilized proteinase K and Mucor circinelloides aspartic protease for further utilization of sericulture by-products. ENVIRONMENTAL RESEARCH 2024; 249:118385. [PMID: 38331140 DOI: 10.1016/j.envres.2024.118385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 01/18/2024] [Accepted: 01/30/2024] [Indexed: 02/10/2024]
Abstract
Silkworm pupae, by-product of sericulture industry, is massively discarded. The degradation rate of silkworm pupae protein is critical to further employment, which reduces the impact of waste on the environment. Herein, magnetic Janus mesoporous silica nanoparticles immobilized proteinase K mutant T206M and Mucor circinelloides aspartic protease were employed in the co-degradation. The thermostability of T206M improved by enhancing structural rigidity (t1/2 by 30 min and T50 by 5 °C), prompting the degradation efficiency. At 65 °C and pH 7, degradation rate reached the highest of 61.7%, which improved by 26% compared with single free protease degradation. Besides, the immobilized protease is easy to separate and reuse, which maintains 50% activity after 10 recycles. Therefore, immobilized protease co-degradation was first applied to the development and utilization of silkworm pupae resulting in the release of promising antioxidant properties and reduces the environmental impact by utilizing a natural and renewable resource.
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Affiliation(s)
- Xuan Zhu
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, China
| | - Yi-Fan Zhao
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, China
| | - Hong-Jian Wen
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, China
| | - Yu Lu
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, China
| | - Shuai You
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212100, China
| | - Richard Ansah Herman
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212100, China
| | - Jun Wang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212100, China.
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Qian J, Chen D, Zhang Y, Gao X, Xu L, Guan G, Wang F. Ultrasound-Assisted Enzymatic Protein Hydrolysis in Food Processing: Mechanism and Parameters. Foods 2023; 12:4027. [PMID: 37959146 PMCID: PMC10647539 DOI: 10.3390/foods12214027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 10/30/2023] [Accepted: 11/02/2023] [Indexed: 11/15/2023] Open
Abstract
Ultrasound has been widely used as a green and efficient non-thermal processing technique to assist with enzymatic hydrolysis. Compared with traditional enzymatic hydrolysis, ultrasonic-pretreatment-assisted enzymatic hydrolysis can significantly improve the efficiency of enzymatic hydrolysis and enhance the biological activity of substrates. At present, this technology is mainly used for the extraction of bioactive substances and the degradation of biological macromolecules. This review is focused on the mechanism of enzymatic hydrolysis assisted by ultrasonic pretreatment, including the effects of ultrasonic pretreatment on the enzyme structure, substrate structure, enzymatic hydrolysis kinetics, and thermodynamics and the effects of the ultrasonic conditions on the enzymatic hydrolysis results. The development status of ultrasonic devices and the application of ultrasonic-assisted enzymatic hydrolysis in the food industry are briefly described in this study. In the future, more attention should be paid to research on ultrasound-assisted enzymatic hydrolysis devices to promote the expansion of production and improve production efficiency.
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Affiliation(s)
- Jingya Qian
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (J.Q.); (D.C.); (Y.Z.); (X.G.); (L.X.); (G.G.)
| | - Di Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (J.Q.); (D.C.); (Y.Z.); (X.G.); (L.X.); (G.G.)
| | - Yizhong Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (J.Q.); (D.C.); (Y.Z.); (X.G.); (L.X.); (G.G.)
| | - Xianli Gao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (J.Q.); (D.C.); (Y.Z.); (X.G.); (L.X.); (G.G.)
| | - Ling Xu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (J.Q.); (D.C.); (Y.Z.); (X.G.); (L.X.); (G.G.)
- Institute of Agricultural Products Processing Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Guoqiang Guan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (J.Q.); (D.C.); (Y.Z.); (X.G.); (L.X.); (G.G.)
| | - Feng Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (J.Q.); (D.C.); (Y.Z.); (X.G.); (L.X.); (G.G.)
- Institute of Agricultural Products Processing Engineering, Jiangsu University, Zhenjiang 212013, China
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