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Xia X, Zhang B, Huang Y, Zhu Y, Qu M, Liu L, Sun B, Zhu X. Soy Protein Isolate Gel Subjected to Freezing Treatment: Influence of Methylcellulose and Sodium Hexametaphosphate on Gel Stability, Texture and Structure. Foods 2024; 13:2117. [PMID: 38998623 PMCID: PMC11241562 DOI: 10.3390/foods13132117] [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: 05/31/2024] [Revised: 06/27/2024] [Accepted: 07/01/2024] [Indexed: 07/14/2024] Open
Abstract
Freezing affects texture and induces the loss of gel quality. This study investigated the effects of methylcellulose (MC) (0.2%, 0.4%, 0.6%) and sodium hexametaphosphate (SHMP) (0.15%, 0.3%) on the gel textural and structural properties of SPI gels before and after freezing, and explores the synergistic enhancement of gel texture and the underlying mechanisms resulting from the simultaneous addition of SHMP and MC to SPI gels. It was revealed that MC improved the strength of SPI gels through its thickening properties, but it could not inhibit the reduction of SPI gels after freezing. The 0.4% MC-SPI gel exhibited the best gel strength (193.2 ± 2.4 g). SHMP inhibited gel reduction during freezing through hydrogen bonding and ionic interactions; it enhanced the freezing stability of SPI gels. The addition of 0.15% SHMP made the water-holding capacity in SPI gels reach the highest score after freezing (58.2 ± 0.32%). The synergistic effect of MC and SHMP could improve the strength and the freezing stability of SPI gels. MC facilitated the release of ionizable groups within SPI, causing negatively charged SHMP groups to aggregate on the SPI and inhibit the freezing aggregation of proteins. These results provide a strong basis for the improvement of cryogenic soy protein gel performance by SHMP and MC.
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Affiliation(s)
| | | | | | | | | | | | | | - Xiuqing Zhu
- College of Food Engineering, Harbin University of Commerce, Harbin 150028, China; (X.X.); (B.Z.); (Y.H.); (Y.Z.); (M.Q.); (L.L.); (B.S.)
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Pumford EA, Jackson Hoffman BA, Kasko AM. Nontoxic Initiator Alternatives to TEMED for Redox Hydrogel Polymerization. ACS APPLIED BIO MATERIALS 2024; 7:2264-2271. [PMID: 38486460 DOI: 10.1021/acsabm.3c01264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Polymeric hydrogels are versatile biomaterials, offering unique advantages in tunability and biocompatibility that make them well-suited to a range of applications. Cross-linking, a fundamental step in hydrogel fabrication, is often initiated using a toxic redox system, ammonium persulfate (APS), and tetramethylethylenediamine (TEMED), which hinders hydrogel utility in direct contact with cells (e.g., wound dressings). To overcome this limitation, we developed alternative redox gelation systems that serve as nontoxic replacements for TEMED. The alternate initiators were either synthetic or bioinspired amine-containing polymers, Glycofect and polyethylenimine (PEI). Used with APS, these initiator candidates produced hydrogels with short gelation time and comparable moduli to TEMED-based gels and underwent further mechanical testing and biocompatibility characterization. While achieving mechanical properties similar to those of the control, the gels based on Glycofect and PEI outperformed TEMED-based gels in two cell viability studies, with Glycofect-initiated gels displaying significantly higher cytocompatibility. Taken together, these results indicate that Glycofect may serve as a drop-in replacement for TEMED to fabricate hydrogels with improved biocompatibility.
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Affiliation(s)
- Elizabeth A Pumford
- Department of Bioengineering, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Brooke A Jackson Hoffman
- Department of Bioengineering, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Andrea M Kasko
- Department of Bioengineering, University of California Los Angeles, Los Angeles, California 90095, United States
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Dixit K, Bora H, Chakrabarti R, Saha B, Dogra N, Biswas S, Sengupta TK, Kaushal M, Rana S, Mukherjee G, Dhara S. Thermoresponsive keratin-methylcellulose self-healing injectable hydrogel accelerating full-thickness wound healing by promoting rapid epithelialization. Int J Biol Macromol 2024; 263:130073. [PMID: 38342268 DOI: 10.1016/j.ijbiomac.2024.130073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/01/2024] [Accepted: 02/07/2024] [Indexed: 02/13/2024]
Abstract
Chronic wounds suffer from impaired healing due to microbial attack and poor vascular growth. Thermoresponsive hydrogels gained attention in wound dressing owing to their gelation at physiological temperature enabling them to take the shape of asymmetric wounds. The present study delineates the development of thermoresponsive hydrogel (MCK), from hair-derived keratin (K) and methylcellulose (MC) in the presence of sodium sulfate. The gelation temperature (Tg) of this hydrogel is in the range of 30 °C to 33 °C. Protein-polymer interaction leading to thermoreversible sol-gel transition involved in MCK blends has been analyzed and confirmed by FTIR, XRD, and thermal studies. Keratin, has introduced antioxidant properties to the hydrogel imparted cytocompatibility towards human dermal fibroblasts (HDFs) as evidenced by both MTT and live dead assays. In vitro wound healing assessment has been shown by enhanced migration of HDFs in the presence of MCK hydrogel compared to the control. Also, CAM assay and CD31 expression by the Wistar rat model has shown increased blood vessel branching after the implantation of MCK hydrogel. Further, in vivo study, demonstrated MCK efficacy of hydrogel in accelerating full-thickness wounds with minimal scarring in Wistar rats, re-epithelialization, and reinstatement of the epidermal-dermal junction thereby exhibiting clinical relevance for chronic wounds.
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Affiliation(s)
- Krishna Dixit
- Biomaterial Tissue Engineering Laboratory, School of Medical Science and Technology, IIT Kharagpur, 721302, West Bengal, India; Immunology and Inflammation Research Laboratory, School of Medical Science and Technology, IIT Kharagpur, 721302, West Bengal, India
| | - Hema Bora
- Biomaterial Tissue Engineering Laboratory, School of Medical Science and Technology, IIT Kharagpur, 721302, West Bengal, India
| | - Rituparna Chakrabarti
- Cardiovascular biology lab, School of Medical Science and Technology, IIT Kharagpur, 721302, West Bengal, India
| | - Baisakhee Saha
- Biomaterial Tissue Engineering Laboratory, School of Medical Science and Technology, IIT Kharagpur, 721302, West Bengal, India
| | - Nantu Dogra
- Biomaterial Tissue Engineering Laboratory, School of Medical Science and Technology, IIT Kharagpur, 721302, West Bengal, India
| | - Saikat Biswas
- Biomaterial Tissue Engineering Laboratory, School of Medical Science and Technology, IIT Kharagpur, 721302, West Bengal, India
| | | | - Manish Kaushal
- Department of Chemical Engineering, IIT Kharagpur, West Bengal 721302, India
| | - Subhasis Rana
- Department of Basic Science and Humanities, University of Engineering and Management, New Town, Action Area-III, Kolkata 700160, India
| | - Gayatri Mukherjee
- Immunology and Inflammation Research Laboratory, School of Medical Science and Technology, IIT Kharagpur, 721302, West Bengal, India
| | - Santanu Dhara
- Biomaterial Tissue Engineering Laboratory, School of Medical Science and Technology, IIT Kharagpur, 721302, West Bengal, India.
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Hou X, Lin L, Li K, Jiang F, Qiao D, Zhang B, Xie F. Towards superior biopolymer gels by enabling interpenetrating network structures: A review on types, applications, and gelation strategies. Adv Colloid Interface Sci 2024; 325:103113. [PMID: 38387158 DOI: 10.1016/j.cis.2024.103113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/02/2024] [Accepted: 02/13/2024] [Indexed: 02/24/2024]
Abstract
Gels derived from single networks of natural polymers (biopolymers) typically exhibit limited physical properties and thus have seen constrained applications in areas like food and medicine. In contrast, gels founded on a synergy of multiple biopolymers, specifically polysaccharides and proteins, with intricate interpenetrating polymer network (IPN) structures, represent a promising avenue for the creation of novel gel materials with significantly enhanced properties and combined advantages. This review begins with the scrutiny of newly devised IPN gels formed through a medley of polysaccharides and/or proteins, alongside an introduction of their practical applications in the realm of food, medicine, and environmentally friendly solutions. Finally, based on the fact that the IPN gelation process and mechanism are driven by different inducing factors entwined with a diverse amalgamation of polysaccharides and proteins, our survey underscores the potency of physical, chemical, and enzymatic triggers in orchestrating the construction of crosslinked networks within these biomacromolecules. In these mixed systems, each specific inducer aligns with distinct polysaccharides and proteins, culminating in the generation of semi-IPN or fully-IPN gels through the intricate interpenetration between single networks and polymer chains or between two networks, respectively. The resultant IPN gels stand as paragons of excellence, characterized by their homogeneity, dense network structures, superior textural properties (e.g., hardness, elasticity, adhesion, cohesion, and chewability), outstanding water-holding capacity, and heightened thermal stability, along with guaranteed biosafety (e.g., nontoxicity and biocompatibility) and biodegradability. Therefore, a judicious selection of polymer combinations allows for the development of IPN gels with customized functional properties, adept at meeting precise application requirements.
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Affiliation(s)
- Xinran Hou
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Life and Health Sciences, Hubei University of Technology, Wuhan 430068, China
| | - Lisong Lin
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Life and Health Sciences, Hubei University of Technology, Wuhan 430068, China
| | - Kexin Li
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Life and Health Sciences, Hubei University of Technology, Wuhan 430068, China
| | - Fatang Jiang
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Life and Health Sciences, Hubei University of Technology, Wuhan 430068, China
| | - Dongling Qiao
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food Science, Southwest University, Chongqing 400715, China.
| | - Binjia Zhang
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food Science, Southwest University, Chongqing 400715, China
| | - Fengwei Xie
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK; Department of Chemical Engineering, University of Bath, Bath BA2 7AY, UK.
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Zuev YF, Derkach SR, Bogdanova LR, Voron’ko NG, Kuchina YA, Gubaidullin AT, Lunev IV, Gnezdilov OI, Sedov IA, Larionov RA, Latypova L, Zueva OS. Underused Marine Resources: Sudden Properties of Cod Skin Gelatin Gel. Gels 2023; 9:990. [PMID: 38131976 PMCID: PMC10742947 DOI: 10.3390/gels9120990] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/08/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023] Open
Abstract
The main object of this work was to characterize the structure and properties of laboratory-made fish gelatin from cod skin in comparison with known commercial gelatins of fish and mammalian origin. This is one way we can contribute to the World Food Program and characterize foodstuff resources from alternative natural sources. Our research was based on the combination of an expanded set of complementary physical-chemical methods to study the similarities and distinctions of hydrogels from traditional and novel gelatin sources from underused marine resources. In this work, we have compared the morphology, supramolecular structure and colloid properties of two commercial (mammalian and fish) gelatins with gelatin we extracted from cold-water cod skin in laboratory conditions. The obtained results are novel, showing that our laboratory-produced fish gelatin is much closer to the mammalian one in terms of such parameters as thermal stability and strength of structural network under temperature alterations. Especially interesting are our experimental observations comparing both fish gelatins: it was shown that the laboratory-extracted cod gelatin is essentially more thermally stable compared to its commercial analogue, being even closer in its rheological properties to the mammalian one.
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Affiliation(s)
- Yuriy F. Zuev
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky Street, 420111 Kazan, Russia (A.T.G.); (I.V.L.); (I.A.S.)
| | - Svetlana R. Derkach
- Laboratory of Chemistry and Technology of Marine Bioresources, Institute of Natural Science and Technology, Murmansk State Technical University, 183010 Murmansk, Russia; (S.R.D.); (N.G.V.); (Y.A.K.)
| | - Liliya R. Bogdanova
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky Street, 420111 Kazan, Russia (A.T.G.); (I.V.L.); (I.A.S.)
| | - Nikolai G. Voron’ko
- Laboratory of Chemistry and Technology of Marine Bioresources, Institute of Natural Science and Technology, Murmansk State Technical University, 183010 Murmansk, Russia; (S.R.D.); (N.G.V.); (Y.A.K.)
| | - Yulia A. Kuchina
- Laboratory of Chemistry and Technology of Marine Bioresources, Institute of Natural Science and Technology, Murmansk State Technical University, 183010 Murmansk, Russia; (S.R.D.); (N.G.V.); (Y.A.K.)
| | - Aidar T. Gubaidullin
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky Street, 420111 Kazan, Russia (A.T.G.); (I.V.L.); (I.A.S.)
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Street, 420088 Kazan, Russia
| | - Ivan V. Lunev
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky Street, 420111 Kazan, Russia (A.T.G.); (I.V.L.); (I.A.S.)
- Institute of Physics, Kazan Federal University, Kremlyovskaya St.18, 420008 Kazan, Russia; (O.I.G.); (R.A.L.)
| | - Oleg I. Gnezdilov
- Institute of Physics, Kazan Federal University, Kremlyovskaya St.18, 420008 Kazan, Russia; (O.I.G.); (R.A.L.)
| | - Igor A. Sedov
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky Street, 420111 Kazan, Russia (A.T.G.); (I.V.L.); (I.A.S.)
- Institute of Physics, Kazan Federal University, Kremlyovskaya St.18, 420008 Kazan, Russia; (O.I.G.); (R.A.L.)
| | - Radik A. Larionov
- Institute of Physics, Kazan Federal University, Kremlyovskaya St.18, 420008 Kazan, Russia; (O.I.G.); (R.A.L.)
| | - Larisa Latypova
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Da-Zhi Street, Harbin 150001, China;
| | - Olga S. Zueva
- Institute of Electric Power Engineering and Electronics, Kazan State Power Engineering University, 51 Krasnoselskaya Street, 420066 Kazan, Russia;
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Cui Z, He M, Chen B, Hu B. In-situ elemental quantitative imaging in plant leaves by LA-ICP-MS with matrix-matching external calibration. Anal Chim Acta 2023; 1275:341588. [PMID: 37524476 DOI: 10.1016/j.aca.2023.341588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/07/2023] [Accepted: 07/04/2023] [Indexed: 08/02/2023]
Abstract
Due to the enormous interest in plants related to bioscience, environmental and toxicological research, analytical methods are expected with the ability of getting information on elemental transfer, distribution and contents in plants. In this work, a mixture of gelatin (GA) and hydroxypropyl methyl cellulose (HPMC) was prepared to simulate plant matrix, a method based on laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) with matrix-matching external calibration was proposed for direct quantification of multiple elements in plants. The composition of GA&HPMC substrate was optimized, such as the concentration of spiked nitric acid, the mass fraction of both GA and HPMC in the substrate and the mass ratio of GA: HPMC. After spiking elemental solution, coating the mixture onto a glass slide and drying overnight at room temperature, GA&HPMC substrate was obtained. The substrate obtained with GA: HPMC of 8: 2 was used to fabricate the standard series, which exhibited good elemental homogeneity and similar elemental signal intensities in LA-ICP-MS detection to that obtained for plant Certified Reference Material (CRM). CRMs of different plants including Citrus leaf (GBW10019), Tea (GBW07605), Beans (GBW10021) and Scallions (GBW10049) were further pressed into pellets and subjected to the proposed method, and the quantification accuracy was demonstrated. The limits of detections of this method were found to be 0.003 (Ce)-104 (Ca) μg g-1, with a wide linear range (0.01-10000 μg g-1) for 17 target elements. The application potential of the method was further demonstrated by performing elemental imaging in Trigonotis peduncularis leaves. Rapid in-situ quantitative imaging of Zn, Cu, Sr and Mn was achieved, and the elemental quantitative distributions were discussed. The constructed substrate helped direct elemental quantification in plants. It provided a powerful and efficient tool for the investigation of the distribution and transfer of elements in plants, favoring further exploration of elemental bioavailability, transport and toxicity mechanisms.
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Affiliation(s)
- Zewei Cui
- Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Man He
- Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Beibei Chen
- Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Bin Hu
- Department of Chemistry, Wuhan University, Wuhan, 430072, China.
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