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Ghasemi S, Alibabaie A, Saberi R, Esmaeili M, Semnani D, Karbasi S. Evaluation of the effects of zein incorporation on physical, mechanical, and biological properties of polyhydroxybutyrate electrospun scaffold for bone tissue engineering applications. Int J Biol Macromol 2023; 253:126843. [PMID: 37703978 DOI: 10.1016/j.ijbiomac.2023.126843] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 09/03/2023] [Accepted: 09/08/2023] [Indexed: 09/15/2023]
Abstract
Materials and fabrication methods significantly influence the scaffold's final features in tissue engineering. This study aimed to blend zein with polyhydroxybutyrate (PHB) at 5, 10, and 15 wt%, fabricate scaffolds using electrospinning, and then characterize them. SEM and mechanical analyses identified the scaffold with 10 wt% zein (PHB-10Z) as the optimal sample. Incorporating 10 wt% zein reduced fiber diameter from 894 ± 122 to 531 ± 42 nm while increasing ultimate tensile strength and elongation at break by approximately 53 % and 70 %, respectively. FTIR proved zein's presence in the scaffolds and possible hydrogen bonding with PHB. TGA confirmed the miscibility of polymers. DSC and XRD analyses indicated lower crystallinity for the PHB-10Z than for PHB. AFM evaluation indicated a rougher surface for the PHB-10Z in comparison to PHB. The PHB-10Z demonstrated a more hydrophobic surface and less weight loss after 100 days of degradation in PBS than PHB. The free radical scavenging assay exhibited antioxidant activity for the zein-containing scaffold. Eventually, enhanced cell attachment, viability, and differentiation in the PHB-10Z scaffold drawn from SEM, MTT, ALP activity, and Alizarin red staining of MG-63 cells confirmed that PHB-zein electrospun scaffold is a potent candidate for bone tissue engineering applications.
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Affiliation(s)
- Saeid Ghasemi
- Department of Biomaterials and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Afshin Alibabaie
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Reyhane Saberi
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Mahdie Esmaeili
- Department of Biomaterials and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Dariush Semnani
- Department of Textile Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Saeed Karbasi
- Department of Biomaterials and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
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Meng C, Jin S, Wang L, Guo F, Zou Q. AOPs-SVM: A Sequence-Based Classifier of Antioxidant Proteins Using a Support Vector Machine. Front Bioeng Biotechnol 2019; 7:224. [PMID: 31620433 PMCID: PMC6759716 DOI: 10.3389/fbioe.2019.00224] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 09/03/2019] [Indexed: 01/03/2023] Open
Abstract
Antioxidant proteins play important roles in countering oxidative damage in organisms. Because it is time-consuming and has a high cost, the accurate identification of antioxidant proteins using biological experiments is a challenging task. For these reasons, we proposed a model using machine-learning algorithms that we named AOPs-SVM, which was developed based on sequence features and a support vector machine. Using a testing dataset, we conducted a jackknife cross-validation test with the proposed AOPs-SVM classifier and obtained 0.68 in sensitivity, 0.985 in specificity, 0.942 in average accuracy, 0.741 in MCC, and 0.832 in AUC. This outperformed existing classifiers. The experiment results demonstrate that the AOPs-SVM is an effective classifier and contributes to the research related to antioxidant proteins. A web server was built at http://server.malab.cn/AOPs-SVM/index.jsp to provide open access.
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Affiliation(s)
- Chaolu Meng
- College of Intelligence and Computing, Tianjin University, Tianjin, China.,College of Computer and Information Engineering, Inner Mongolia Agricultural University, Hohhot, China
| | - Shunshan Jin
- Department of Neurology, Heilongjiang Province Land Reclamation Headquarters General Hospital, Harbin, China
| | - Lei Wang
- College of Computer Engineering and Applied Mathematics, Changsha University, Changsha, China
| | - Fei Guo
- College of Intelligence and Computing, Tianjin University, Tianjin, China
| | - Quan Zou
- College of Intelligence and Computing, Tianjin University, Tianjin, China.,Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China.,Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, China
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Qiu C, Sun W, Cui C, Zhao M. Effect of citric acid deamidation on in vitro digestibility and antioxidant properties of wheat gluten. Food Chem 2013; 141:2772-8. [DOI: 10.1016/j.foodchem.2013.05.072] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 04/15/2013] [Accepted: 05/16/2013] [Indexed: 11/15/2022]
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Siswoyo TA, Mardiana E, Lee KO, Hoshokawa K. Isolation and characterization of antioxidant protein fractions from melinjo (Gnetum gnemon) seeds. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:5648-5656. [PMID: 21486028 DOI: 10.1021/jf2000647] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The protein from the seeds of melinjo ( Gnetum gnemon ) was purified using a precipitation method and ion exchange chromatographic techniques to identify the potent antioxidant and free radical scavenging activities. Two antioxidant protein fractions were isolated from G. gnemon seed with molecular weights of approximately 30 kDa (Gg-AOPI) and 12 kDa (Gg-AOPII) by SDS-PAGE. The N-terminal amino acid sequence of Gg-AOPII is Gly-Asn-Gly-Lys-Ala-Thr-Val-Ala-Ile-Leu-Val-Lys-Glu-Lys-Val-Glu-Tyr-Gly-Glu-Glu, and the result of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) analysis showed that they were distinct from each other; no protein in database matching was found to both Gg-AOPI and Gg-AOPII. The antioxidant or free radical scavenging activities of Gg-AOPs were investigated by employing in vitro assay systems including the inhibition of linoleic acid autoxidation, scavenging effect on α,α-diphenyl-β-picrylhydrazyl free radical (DPPH), 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), reducing power, chelating abilities of metal ions Cu(2+) and Fe(2+), and protections against hydroxyl radical-mediated DNA damages. The result showed that two protein fractions exhibited significant (p < 0.05) antioxidant activities against free radicals such as DPPH, ABTS, and superoxide anion and showed activities similar to those of glutathione (G-SH) and BHT in a linoleic acid emulsion assay system. Moreover, Gg-AOPI and Gg-AOPII also exhibited notable reducing power and strong chelating effect on Fe(2+) and protected hydroxyl radical induced oxidative DNA damage. The data obtained by the in vitro systems obviously established the antioxidant potency of Gg-AOPs.
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Affiliation(s)
- Tri Agus Siswoyo
- Department of Agronomy, Faculty of Agriculture, University of Jember, Jember, Indonesia.
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Schober TJ, Moreau RA, Bean SR, Boyle DL. Removal of surface lipids improves the functionality of commercial zein in viscoelastic zein-starch dough for gluten-free breadmaking. J Cereal Sci 2010. [DOI: 10.1016/j.jcs.2010.07.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Arcan I, Yemenicioğlu A. Effects of controlled pepsin hydrolysis on antioxidant potential and fractional changes of chickpea proteins. Food Res Int 2010. [DOI: 10.1016/j.foodres.2009.09.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Antimicrobial and antioxidant activity of edible zein films incorporated with lysozyme, albumin proteins and disodium EDTA. Food Res Int 2007. [DOI: 10.1016/j.foodres.2006.08.007] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Antioxidant activity of protein extracts from heat-treated or thermally processed chickpeas and white beans. Food Chem 2007. [DOI: 10.1016/j.foodchem.2006.07.050] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Virtanen T, Pihlanto A, Akkanen S, Korhonen H. Development of antioxidant activity in milk whey during fermentation with lactic acid bacteria. J Appl Microbiol 2007; 102:106-15. [PMID: 17184325 DOI: 10.1111/j.1365-2672.2006.03072.x] [Citation(s) in RCA: 174] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
AIMS To investigate the production of antioxidant activity during fermentation with commonly used dairy starter cultures. Moreover, to study the development of antioxidant activity during fermentation, and the connection to proteolysis and bacterial growth. METHODS AND RESULTS Antioxidant activity was measured by analysing the radical scavenging activity using a spectrophotometric decolorization assay and lipid peroxidation inhibition was assayed using liposomal model system with a fluorescence method. Milk was fermented with 25 lactic acid bacterial (LAB) strains, and from these six strains, exhibiting the highest radical scavenging activity was selected for further investigation. Leuconostoc mesenteroides ssp. cremoris strains, Lactobacillus jensenii (ATCC 25258) and Lactobacillus acidophilus (ATCC 4356) showed the highest activity with both the methods used. However, the radical scavenging activity was stronger than lipid peroxidation inhibition activity. The development of radical scavenging activity was connected to proteolysis with four strains. Molecular distribution profiles showed that fermentates with high scavenging activity also possessed a higher proportion of peptides in the molecular mass range of 4-20 kDa, while others had mostly large polypeptides and compounds below 4 kDa. In addition, the amount of hydrophobic amino acids was higher in these fermentates. CONCLUSIONS The development of antioxidant activity was strain-specific characteristic. The development of radical scavengers was more connected to the simultaneous development of proteolysis whereas, lipid peroxidation inhibitory activity was related to bacterial growth. However, high radical scavenging activity was not directly connected to the high degree of proteolysis. SIGNIFICANCE AND IMPACT OF THE STUDY To the best of our knowledge, this seems to be the first report, which screens possible antioxidant activity among most common dairy LAB strains. Use of such strains improve nutritional value of fermented dairy products.
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Affiliation(s)
- T Virtanen
- Biotechnology and Food Research, MTT Agrifood Research Finland, Jokioinen, Finland
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Kong B, Xiong YL. Antioxidant activity of zein hydrolysates in a liposome system and the possible mode of action. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2006; 54:6059-68. [PMID: 16881717 DOI: 10.1021/jf060632q] [Citation(s) in RCA: 269] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Maize zein was hydrolyzed for 0.5-5 h by alcalase or papain. Protein solubility increased (P < 0.05) with the degree of hydrolysis (DH) and was higher for alcalase-hydrolyzed zein than for papain-hydrolyzed zein. The zein hydrolysates with both enzymes consisted mostly of small peptides or amino acids nondetectable by 15% acrylamide gel electrophoresis. Alcalase-hydrolyzed zein exhibited a stronger (P < 0.05) antioxidant activity than papain-hydrolyzed zein, as indicated by peroxide and thiobarbituric acid-reactive substance values in a liposome-oxidizing system. Zein hydrolysates possessed strong Cu(2+) chelation ability and marked reducing power, both of which were accentuated with hydrolysis time. The protein hydrolysates also showed strong radical-scavenging ability, which was not influenced by hydrolysis time. The antioxidant activity of alcalase-hydrolyzed zein at some specific low concentrations was close or comparable to those of butylated hydroxyanisole, alpha-tocopherol, and ascorbate. Although intact zein displayed an antioxidative effect, it was far less potent than hydrolyzed zein. The results demonstrated that enzyme-hydrolyzed zein can act as a metal ion chelator or a hydrogen donor, as well as a radical stabilizer to inhibit lipid oxidation. The effectiveness of the protein hydrolysates appeared to depend on both the concentration and the peptide/amino acid composition of the soluble protein fraction.
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Affiliation(s)
- Baohua Kong
- Department of Food Science, Northeast Agricultural University, Harbin, China
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Byaruhanga YB, Erasmus C, Taylor JRN. Effect of Microwave Heating of Kafirin on the Functional Properties of Kafirin Films. Cereal Chem 2005. [DOI: 10.1094/cc-82-0565] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Yusuf B. Byaruhanga
- Department of Food Science and Technology, Makerere University, PO Box 7062, Kampala, Uganda
- Department of Food Science, University of Pretoria, Pretoria 0002, South Africa
| | - Corinda Erasmus
- Food Science and Technology Programme, CSIR Bio/Chemtek, PO Box 395, Pretoria 0001, South Africa
| | - John R. N. Taylor
- Department of Food Science, University of Pretoria, Pretoria 0002, South Africa
- Corresponding author. Phone: +27 12 420 4296. Fax: +27 12 420 2839. E-mail:
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Yong YH, Yamaguchi S, Gu YS, Mori T, Matsumura Y. Effects of enzymatic deamidation by protein-glutaminase on structure and functional properties of alpha-zein. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2004; 52:7094-7100. [PMID: 15537323 DOI: 10.1021/jf040133u] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The performance of novel protein-glutaminase (PG) purified from Chryseobacterium proteolyticumon alpha-zein was investigated. Highly insoluble alpha-zein was able to be deamidated to the extent of deamidation degree 62% by using 50 mM potassium phosphate (pH 8) containing 11.7% ethanol, at 40 degrees C for 137 h. Analysis by sodium dodecyl sulfate polyacrylamide-gel electrophoresis showed that deamidated and non-deamidated zeins have different mobilities. Results of circular dichroism spectra revealed the decline in alpha-helix contents of alpha-zein by deamidation. Besides, Fourier transform infrared spectroscopy analysis demonstrated alterations in the secondary structure of alpha-zein by deamidation. The assignment of the amide I region showed a remarkable decrease in antiparallel intermolecular beta-sheets (around 1690 cm(-1)) as an indication of the weakening aggregation ability of the deamidated molecules. Solubility and emulsification properties of alpha-zein, particularly at pH 7, were remarkably improved after the deamidation by PG. Gas chromatography and peroxide value studies pointed out that deamidated alpha-zein in powder form exhibited an inferior antioxidative property as compared with the non-deamidated one.
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Affiliation(s)
- Yie Hui Yong
- Laboratory of Quality Analysis and Assessment, Division of Agronomy and Horticultural Science, Graduate School of Agriculture, Kyoto University, Gokasho, Uji, Kyoto 611-0011 Japan
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KAWASE SI, MURAKAMI H, MATSUMURA Y, MORI T. Effects of Deamidation and Fragmentation on Antioxidative Activity of .ALPHA.-Zein. J Oleo Sci 2002. [DOI: 10.5650/jos.51.387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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