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Santos MPF, Junior ECS, Bonomo RCF, Santos LS, Veloso CM. Hydrolysis of Casein by Pepsin Immobilized on Heterofunctional Supports to Produce Antioxidant Peptides. Appl Biochem Biotechnol 2024:10.1007/s12010-024-04988-2. [PMID: 38888698 DOI: 10.1007/s12010-024-04988-2] [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] [Accepted: 06/05/2024] [Indexed: 06/20/2024]
Abstract
A study was carried out on the immobilization of pepsin in activated carbon functionalized by different techniques (glutaraldehyde, genipin, and metallization) aiming at its application in obtaining bioactive peptides through casein hydrolysis. Studies of the immobilized derivatives were carried out in addition to the evaluation of the antioxidant potential of the peptides. Among the pH range studied, pH 3.0 was selected due to the higher activity of the derivatives at this pH. The support modification by metallization was the method with the best results, providing a 121% increase in enzymatic activity compared to other immobilization methods. In addition, this derivative provided activity closer to the soluble enzyme activity (3.30 U) and better storage stability, and allows reuse for more than 8 cycles. In turn, the peptides from casein hydrolysis showed potential as antioxidant agents, with a DPPH radical scavenging activity higher than 70%, maximum protection against β-carotene oxidation close to 70%, and a maximum reducing power of Fe(III) into Fe(II) of 400 uM by the FRAP assay. The results showed that the new techniques for modification of activated carbon can be a promising approach for pepsin immobilization.
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Affiliation(s)
- Mateus P F Santos
- Process Engineering Laboratory, State University of Southwest Bahia, BR 415, Km 04, S/N, Itapetinga, BA, 45700-000, Brazil
- Applied Microbiology Laboratory - Agroindustry, Santa Cruz State University, Rod. Jorge Amado, Km 16, S/N, Ilhéus, BA, 45662-900, Brazil
| | - Evaldo C S Junior
- Process Engineering Laboratory, State University of Southwest Bahia, BR 415, Km 04, S/N, Itapetinga, BA, 45700-000, Brazil
| | - Renata C F Bonomo
- Process Engineering Laboratory, State University of Southwest Bahia, BR 415, Km 04, S/N, Itapetinga, BA, 45700-000, Brazil
| | - Leandro Soares Santos
- Laboratory of Packaging and Agro-Industrial Projects, State University of Southwest Bahia, BR 415, Km 04, S/N, Itapetinga, BA, 45700-000, Brazil
| | - Cristiane M Veloso
- Process Engineering Laboratory, State University of Southwest Bahia, BR 415, Km 04, S/N, Itapetinga, BA, 45700-000, Brazil.
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Filippovich SY, Isakova EP, Gessler NN, Deryabina YI. Advances in immobilization of phytases and their application. BIORESOURCE TECHNOLOGY 2023; 379:129030. [PMID: 37037335 DOI: 10.1016/j.biortech.2023.129030] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 05/03/2023]
Abstract
The review describes the advances in the phytase immobilization for the past decade and their biotechnological applications. Different approaches for phytase immobilization are described including the process using organic and inorganic matrices and microbial cells, as well as nanostructures of various nature. Moreover, the immobilization of phytase-producing microbial cells and the use of cross-linked phytase aggregates have been under consideration. A detailed classification of various carriers for immobilization of phytases and the possibility of their applications are presented. A particular attention is drawn to a breakthrough approach of biotechnological significance to the design of microencapsulation of bacterial phytase from Obesumbacterium proteus in the recombinant extremophile of Yarrowia lipolytica.
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Affiliation(s)
- Svetlana Yu Filippovich
- Bach Institute of Biochemistry, Fundamentals of Biotechnology Federal Research Center, Russian Academy of Sciences, Moscow 119071, Russia.
| | - Elena P Isakova
- Bach Institute of Biochemistry, Fundamentals of Biotechnology Federal Research Center, Russian Academy of Sciences, Moscow 119071, Russia.
| | - Natalia N Gessler
- Bach Institute of Biochemistry, Fundamentals of Biotechnology Federal Research Center, Russian Academy of Sciences, Moscow 119071, Russia.
| | - Yulia I Deryabina
- Bach Institute of Biochemistry, Fundamentals of Biotechnology Federal Research Center, Russian Academy of Sciences, Moscow 119071, Russia.
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Venkataraman S, Vaidyanathan VK. Dephytinization of wheat and rice bran by cross-linked enzyme aggregates of Mucor indicus phytase: a viable prospect for food and feed industries. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:1935-1945. [PMID: 36408806 DOI: 10.1002/jsfa.12345] [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: 09/05/2022] [Revised: 11/10/2022] [Accepted: 11/20/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Novel feeds for improved feed intake and for enhanced nutrient bioavailability have recently attracted attention. Insoluble dietary fibers, especially rice and wheat bran, have generated much interest due to their nutritional value. Incorporating insoluble dietary fiber into diets could be a viable way to maximize the feed conversion ratio. RESULTS Cross-linked phytase aggregates (CLPA) were synthesized by precipitating enzymes followed by cross-linking with 5 mmol L-1 glutaraldehyde, yielding 88.24 (U g-1 ) of enzyme load without the assistance of a proteic feeder. The epitome of the study is the dephosphorylation of wheat bran and rice bran by varying pH, enzyme concentration, and temperature. The highest inorganic phosphorus liberation by 150 U L--1 of free phytase was 23.72 (wheat bran) and 48.08 mg g-1 (rice bran) after 12 h of incubation. Furthermore, 150 U L-1 of CLPA liberated 28.72 (wheat bran) and 52.08 mg g-1 (rice bran) of inorganic phosphorus with an incubation time of 12 h. CONCLUSION Thermostable free phytase was insolubilized to dephosphorylate the agro-residue, namely, wheat bran and rice bran, to reduce the anti-nutritional factor (the phytate content) of these insoluble dietary fibers. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Swethaa Venkataraman
- Integrated Bioprocessing Laboratory, Department of Biotechnology, SRM Institute of Science and Technology, Chennai, India
| | - Vinoth Kumar Vaidyanathan
- Integrated Bioprocessing Laboratory, Department of Biotechnology, SRM Institute of Science and Technology, Chennai, India
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Zhang Y, Cao B, Yin H, Meng L, Jin W, Wang F, Xu J, Al-Tabbaa A. Application of zeolites in permeable reactive barriers (PRBs) for in-situ groundwater remediation: A critical review. CHEMOSPHERE 2022; 308:136290. [PMID: 36058373 DOI: 10.1016/j.chemosphere.2022.136290] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/25/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
Permeable reactive barrier (PRB) is one of the most promising in-situ groundwater remediation technologies due to its low costs and wide immobilization suitability for multiple contaminants. Reactive medium is a key component of PRBs and their selection needs to consider removal effectiveness as well as permeability. Zeolites have been extensively reported as reactive media owing to their high adsorption capacity, diverse pore structure and high stability. Moreover, the application of zeolites can reduce the PRBs fouling and clogging compared to reductants like zero-valence iron (ZVI) due to no formation of secondary precipitates, such as iron monosulfide, in spite of their reactivity to remove organics. This study gives a detailed review of lab-scale applications of zeolites in PRBs in terms of sorption characteristics, mechanisms, column performance and desorption features, as well as their field-scale applications to point out their application tendency in PRBs for contaminated groundwater remediation. On this basis, future prospects and suggestions for using zeolites in PRBs for groundwater remediation were put forward. This study provides a comprehensive and critical review of the lab-scale and field-scale applications of zeolites in PRBs and is expected to guide the future design and applications of adsorbents-based PRBs for groundwater remediation.
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Affiliation(s)
- Yunhui Zhang
- College of Environmental Science and Engineering, Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai, 200092, China; Department of Engineering, University of Cambridge, Cambridge, CB2 1PZ, United Kingdom.
| | - Benyi Cao
- Department of Civil and Environmental Engineering, University of Surrey, Guildford, GU2 7XH, United Kingdom.
| | - Hailong Yin
- College of Environmental Science and Engineering, Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai, 200092, China.
| | - Lite Meng
- College of Environmental Science and Engineering, Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai, 200092, China.
| | - Wei Jin
- College of Environmental Science and Engineering, Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai, 200092, China.
| | - Fei Wang
- Institute of Geotechnical Engineering, School of Transportation, Southeast University, Nanjing, 210096, China.
| | - Jian Xu
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing, 210042, China.
| | - Abir Al-Tabbaa
- Department of Engineering, University of Cambridge, Cambridge, CB2 1PZ, United Kingdom.
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