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Wang H, Fan T, Zeng Z, Chen Z, Lu M, Zhou M, Qin X, Liu X. Use of ozone oxidation in combination with deacetylation for improving the structure and gelation properties of konjac glucomannan. Food Chem 2024; 453:139599. [PMID: 38788640 DOI: 10.1016/j.foodchem.2024.139599] [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: 01/31/2024] [Revised: 04/18/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024]
Abstract
In this study, oxidized deacetylated konjac glucomannans with different degrees of oxidation were prepared by a combination of deacetylation and ozone oxidation. Carboxyl groups were found to be introduced into the modified konjac glucomannan while acetyl groups were removed. The backbone, branched chains, and crystal structure of modified konjac glucomannan were not significantly affected. The whiteness was enhanced to 97-99 % and the thermal degradation temperature was up to 250 °C after modification. The solubility of the modified konjac glucomannan (oxidized for 60 min) was significantly increased to 84.56 % (p < 0.05), while its viscosity and swelling power were notably decreased owing to the changes in molecular weight (from 106 to 104) and functional groups. Rheological analysis showed that oxidized deacetylated konjac glucomannan has the ability to form soft-textured gels and the potential to develop dysphagia foods. Future studies should focus on the gelation mechanisms of oxidized deacetylated konjac glucomannan.
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Affiliation(s)
- Haoyuan Wang
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Tianqin Fan
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Zhilong Zeng
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Zhaojun Chen
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Manman Lu
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Min Zhou
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Xiaoli Qin
- College of Food Science, Southwest University, Chongqing 400715, China.
| | - Xiong Liu
- College of Food Science, Southwest University, Chongqing 400715, China.
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2
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Zheng Y, Liu Q, Luo H, Zheng J, Li W. Effect of pretreatment with electron beam irradiation on the deacetylation efficiency of konjac glucomannan and its structural, physicochemical and gel properties. Int J Biol Macromol 2024; 276:133887. [PMID: 39019354 DOI: 10.1016/j.ijbiomac.2024.133887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 05/17/2024] [Accepted: 07/13/2024] [Indexed: 07/19/2024]
Abstract
Due to its emulsifying and thickening properties, konjac glucomannan (KGM) is widely used in the food, medicine, and materials industries. Nevertheless, its high viscosity and significant water absorption limit its application range. Therefore, electron beam (e-beam) irradiation pretreatment was carried out to improve the deacetylation efficiency of KGM, and the physicochemical and gel properties of KGM were investigated. The results show that e-beam irradiation and deacetylation decrease the water absorption, solubility, transparency, molecular weight, and viscosity of KGM. Conversely, the moisture content, thermal stability, and water-binding capacity increase. FTIR and X-ray diffraction analysis revealed no significant changes in the chemical and crystalline structure of KGM before and after modification. However, modification weakens the intermolecular interaction of KGM hydrosols, which affects their rheology. Furthermore, deacetylation improves the mechanical properties and water retention capacity of KGM gels. Overall, the e-beam irradiation pretreatment provides a method to increase the efficiency of KGM deacetylation and improve the physical and chemical properties of KGM, thus expanding its potential applications in the food and chemical industries, among others.
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Affiliation(s)
- Yue Zheng
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Qing Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Haiyu Luo
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jiayu Zheng
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wenhao Li
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China.
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3
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Lin ZM, Wen JX, Lin DQ, Liu K, Chen YL, Miao S, Cao MJ, Sun LC. Physicochemical and Rheological Properties of Degraded Konjac Gum by Abalone ( Haliotis discus hannai) Viscera Enzyme. Foods 2024; 13:2158. [PMID: 38998663 PMCID: PMC11241667 DOI: 10.3390/foods13132158] [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: 04/30/2024] [Revised: 06/02/2024] [Accepted: 07/02/2024] [Indexed: 07/14/2024] Open
Abstract
In the present study, a new degraded konjac glucomannan (DKGM) was prepared using a crude enzyme from abalone (Haliotis discus hannai) viscera, and its physicochemical properties were investigated. After enzymatic hydrolysis, the viscosity of KGM obviously decreased from 15,500 mPa·s to 398 mPa·s. The rheological properties analysis of KGM and DKGMs revealed that they were pseudoplastic fluids, and pseudoplasticity, viscoelasticity, melting temperature, and gelling temperature significantly decreased after enzymatic hydrolysis, especially for KGM-180 and KGM-240. In addition, the molecular weight of KGM decreased from 1.80 × 106 Da, to 0.45 × 106 Da and the polydispersity index increased from 1.17 to 1.83 after 240 min of degradation time. Compared with natural KGM, the smaller particle size distribution of DKGM further suggests enzyme hydrolysis reduces the aggregation of molecular chains with low molecular weight. FT-IR and FESEM analyses showed that the fragmented KMG chain did not affect the structural characteristics of molecular monomers; however, the dense three-dimensional network microstructure formed by intermolecular interaction changed to fragment microstructure after enzyme hydrolysis. These results revealed that the viscosity and rheological properties of KGM could be controlled and effectively changed using crude enzymes from abalone viscera. This work provides theoretical guidance for the promising application of DKGM in the food industry.
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Affiliation(s)
- Zhao-Ming Lin
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; (Z.-M.L.); (J.-X.W.); (D.-Q.L.); (K.L.); (Y.-L.C.); (M.-J.C.)
- National & Local Joint Engineering Research Center of Deep Processing Technology for Aquatic Products, Jimei University, Xiamen 361021, China
| | - Jia-Xin Wen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; (Z.-M.L.); (J.-X.W.); (D.-Q.L.); (K.L.); (Y.-L.C.); (M.-J.C.)
- National & Local Joint Engineering Research Center of Deep Processing Technology for Aquatic Products, Jimei University, Xiamen 361021, China
| | - Duan-Quan Lin
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; (Z.-M.L.); (J.-X.W.); (D.-Q.L.); (K.L.); (Y.-L.C.); (M.-J.C.)
- National & Local Joint Engineering Research Center of Deep Processing Technology for Aquatic Products, Jimei University, Xiamen 361021, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian 116034, China
| | - Kang Liu
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; (Z.-M.L.); (J.-X.W.); (D.-Q.L.); (K.L.); (Y.-L.C.); (M.-J.C.)
- National & Local Joint Engineering Research Center of Deep Processing Technology for Aquatic Products, Jimei University, Xiamen 361021, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian 116034, China
| | - Yu-Lei Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; (Z.-M.L.); (J.-X.W.); (D.-Q.L.); (K.L.); (Y.-L.C.); (M.-J.C.)
- National & Local Joint Engineering Research Center of Deep Processing Technology for Aquatic Products, Jimei University, Xiamen 361021, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian 116034, China
| | - Song Miao
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland;
| | - Min-Jie Cao
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; (Z.-M.L.); (J.-X.W.); (D.-Q.L.); (K.L.); (Y.-L.C.); (M.-J.C.)
- National & Local Joint Engineering Research Center of Deep Processing Technology for Aquatic Products, Jimei University, Xiamen 361021, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian 116034, China
| | - Le-Chang Sun
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; (Z.-M.L.); (J.-X.W.); (D.-Q.L.); (K.L.); (Y.-L.C.); (M.-J.C.)
- National & Local Joint Engineering Research Center of Deep Processing Technology for Aquatic Products, Jimei University, Xiamen 361021, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian 116034, China
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Zhang X, Ding J, Liao M, Meng X, Fu Y, Huang L, Wang Z, Wang Q. Characterization of Degraded Konjac Glucomannan from an Isolated Bacillus licheniformis Strain with Multi-Enzyme Synergetic Action. Foods 2024; 13:2041. [PMID: 38998547 PMCID: PMC11241805 DOI: 10.3390/foods13132041] [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: 05/26/2024] [Revised: 06/14/2024] [Accepted: 06/25/2024] [Indexed: 07/14/2024] Open
Abstract
The large molecular weight and high viscosity of natural konjac glucomannan (KGM) limit its industrial application. Microbial degradation of low-molecular-weight KGM has health benefits and various biological functions; however, the available KGM strains used in the industry have microbial contamination and low degradation efficiencies. Therefore, exploring novelly adaptable strains is critical for industrial processes. Here, the Bacillus licheniformis Z7-1 strain isolated from decaying konjac showed high efficiency for KGM degradation. The monosaccharide composition of the degradation products had a reduced molar ratio of mannose to glucose, indicating that Z7-1 preferentially degraded glucose in KGM. The degraded component was further characterized by ESI-MS, Fourier-transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM), and it also exhibited good antibacterial activity against various food-spoilage bacteria. Genome sequencing and zymolytic analysis revealed that abundant carbohydrate-active enzymes exist in the Z7-1 genome, with at least five types of extracellular enzymes responsible for KGM degradation, manifesting multi-enzyme synergetic action. The extracellular enzymes had significant thermal stability, indicating their potential application in industry. This study provides an alternative method for obtaining low-molecular-weight KGM with antibacterial functions and supports foundational knowledge for its development as a biocatalyst for the direct conversion of biomass polysaccharides into functional components.
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Affiliation(s)
- Xueting Zhang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Jieqiong Ding
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Minghong Liao
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Xin Meng
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Yubiao Fu
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Linjuan Huang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Zhongfu Wang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Qingling Wang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
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5
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Ma H, Liao M, Zhong P, Ding J, Wang X, Gong G, Huang L, Liu J, Wang Q. Diversely regio-oxidative degradation of konjac glucomannan by lytic polysaccharide monooxygenase AA10 and generating antibacterial hydrolysate. Int J Biol Macromol 2024; 266:131094. [PMID: 38537852 DOI: 10.1016/j.ijbiomac.2024.131094] [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: 12/05/2023] [Revised: 03/18/2024] [Accepted: 03/20/2024] [Indexed: 04/06/2024]
Abstract
Konjac glucomannan (KGM) hydrolysate exhibit various biological activities and health-promoting effects. Lytic polysaccharide monooxygenases (LPMOs) play an important role on enzymatic degradation of recalcitrant polysaccharides to obtain fermentable sugars. It is generally accepted that LPMOs exhibits high substrate specificity and oxidation regioselectivity. Here, a bacteria-derived SmAA10A, with chitin-active with strict C1 oxidation, was used to catalyse KGM degradation. Through ethanol precipitation, two hydrolysed KGM components (4 kDa (KGM-1) and 5 kDa (KGM-2)) were obtained that exhibited antibacterial activity against Staphylococcus aureus. In natural KGM, KGM-1, and KGM-2, the molar ratios of mannose to glucose were 1:2.19, 1:3.05, and 1:2.87, respectively, indicating that SmAA10A preferentially degrades mannose in KGM. Fourier-transform infrared spectroscopy and scanning electron microscopy imaging revealed the breakage of glycosylic bonds during enzymatic catalysis. The regioselectivity of SmAA10A for KGM degradation was determined based on the fragmentation behaviour of the KGM-1 and KGM-2 oligosaccharides and their NaBD4-reduced forms. SmAA10A exhibited diverse oxidation degradation of KGM and generated single C1-, single C4-, and C1/C4-double oxidised oligosaccharide forms. This study provides an alternative method for obtaining KGM degradation components with antibacterial functions and expands the substrate specificity and oxidation regioselectivity of bacterial LPMOs.
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Affiliation(s)
- Hongjuan Ma
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China; College of Life Science, Northwest University, Xi'an 710069, China
| | - Minghong Liao
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Peiyun Zhong
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Jieqiong Ding
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Xiaoqin Wang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Guiping Gong
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Linjuan Huang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Jianling Liu
- College of Life Science, Northwest University, Xi'an 710069, China.
| | - Qingling Wang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China.
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Xu C, Cheng K, Kang Y, Cheng C, Zhang C, Shang L. Deacetylated Konjac Glucomannan with a Slower Hydration Rate Delays Rice Digestion and Weakens Appetite Response. Molecules 2024; 29:1681. [PMID: 38611960 PMCID: PMC11013606 DOI: 10.3390/molecules29071681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/31/2024] [Accepted: 04/06/2024] [Indexed: 04/14/2024] Open
Abstract
The physical characteristics of chyme during gastrointestinal digestion are considered to significantly affect nutrient digestion and absorption (such as glucose diffusion), which has an impact on postprandial satiety. The present study aims to analyze the hydration rate (HR) and rheological properties of deacetylated konjac glucomannan (DKGM) at different degrees and then explore their effects on rice texture, digestive properties, and the subjects' post-meal appetite. The present results show that, as the deacetylation degree (DD) of KGM increased, the intersection point of the viscoelastic modulus shifted to a high shear rate frequency, and as the swelling time of the DKGM was prolonged, its HR decreased significantly. The results of the in vitro gastrointestinal digestion tests show that the hardness and chewability of the rice in the fast-hydration group (MK1) were remarkably reduced. In contrast, the slow-hydration group (MK5) exhibited an outstanding ability to resist digestion. The kinetics of starch hydrolysis revealed that the HR of the rice in the fast-hydration group was 1.8 times faster than that of the slow-hydration group. Moreover, it was found that the subjects' appetite after the meal was highly related to the HR of the MK. Their hunger (p < 0.001), desire to eat (p < 0.001), and prospective food consumption (p < 0.001) were significantly inhibited in the slow-hydration group (MK5) compared to the control. This study explored the nutritional effects of the hydration properties derived from the DKGM, which may contribute to modifying the high glycemic index food and provide ideas for the fabrication of food with enhanced satiating capacity.
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Affiliation(s)
- Chenfeng Xu
- College of Biological and Food Engineering, Hubei Minzu University, Enshi 445002, China; (C.X.); (K.C.); (C.C.); (C.Z.)
- Hubei Key Laboratory of Selenium Resource Research and Biological Application, Hubei Minzu University, Enshi 445002, China
| | - Kaixuan Cheng
- College of Biological and Food Engineering, Hubei Minzu University, Enshi 445002, China; (C.X.); (K.C.); (C.C.); (C.Z.)
- Hubei Key Laboratory of Selenium Resource Research and Biological Application, Hubei Minzu University, Enshi 445002, China
| | - Yu Kang
- Enshi Tujia and Miao Autonomous Prefecture Academy of Agricultural Sciences, Hubei Minzu University, Enshi 445002, China;
| | - Chao Cheng
- College of Biological and Food Engineering, Hubei Minzu University, Enshi 445002, China; (C.X.); (K.C.); (C.C.); (C.Z.)
- Hubei Key Laboratory of Selenium Resource Research and Biological Application, Hubei Minzu University, Enshi 445002, China
| | - Chi Zhang
- College of Biological and Food Engineering, Hubei Minzu University, Enshi 445002, China; (C.X.); (K.C.); (C.C.); (C.Z.)
- Hubei Key Laboratory of Selenium Resource Research and Biological Application, Hubei Minzu University, Enshi 445002, China
| | - Longchen Shang
- College of Biological and Food Engineering, Hubei Minzu University, Enshi 445002, China; (C.X.); (K.C.); (C.C.); (C.Z.)
- Hubei Key Laboratory of Selenium Resource Research and Biological Application, Hubei Minzu University, Enshi 445002, China
- Enshi Tujia and Miao Autonomous Prefecture Academy of Agricultural Sciences, Hubei Minzu University, Enshi 445002, China;
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Sun Y, Xu X, Zhang Q, Zhang D, Xie X, Zhou H, Wu Z, Liu R, Pang J. Review of Konjac Glucomannan Structure, Properties, Gelation Mechanism, and Application in Medical Biology. Polymers (Basel) 2023; 15:polym15081852. [PMID: 37111999 PMCID: PMC10145206 DOI: 10.3390/polym15081852] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/07/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Konjac glucomannan (KGM) is a naturally occurring macromolecular polysaccharide that exhibits remarkable film-forming and gel-forming properties, and a high degree of biocompatibility and biodegradability. The helical structure of KGM is maintained by the acetyl group, which plays a crucial role in preserving its structural integrity. Various degradation methods, including the topological structure, can enhance the stability of KGM and improve its biological activity. Recent research has focused on modifying KGM to enhance its properties, utilizing multi-scale simulation, mechanical experiments, and biosensor research. This review presents a comprehensive overview of the structure and properties of KGM, recent advancements in non-alkali thermally irreversible gel research, and its applications in biomedical materials and related areas of research. Additionally, this review outlines prospects for future KGM research, providing valuable research ideas for follow-up experiments.
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Affiliation(s)
- Yilan Sun
- Center for Agroforestry Mega Data Science, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaowei Xu
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Qinhua Zhang
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Di Zhang
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaoyu Xie
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hanlin Zhou
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhenzhen Wu
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Renyi Liu
- Center for Agroforestry Mega Data Science, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jie Pang
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Xu W, Ning Y, Sun Y, Sun H, Jia Y, Chai L, Luo D, Shah BR. Reversibility of freeze-thaw/re-emulsification on Pickering emulsion stabilized with gliadin/sodium caseinate nanoparticles and konjac glucomannan. Int J Biol Macromol 2023; 233:123653. [PMID: 36780967 DOI: 10.1016/j.ijbiomac.2023.123653] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 01/06/2023] [Accepted: 02/08/2023] [Indexed: 02/13/2023]
Abstract
The reversibility of freeze-thaw/re-emulsification of Pickering emulsion stabilized by gliadin/sodium caseinate nanoparticles (Gli/CAS NPs) was improved by adding konjac glucomannan (KGM). With the increase in the KGM concentration, the delamination of emulsions after freeze-thaw treatment was significantly improved. The microstructure showed that the presence of KGM helped to maintain the network structure of continuous phases. In particular, the particle size of the emulsion did not increase significantly after three freeze-thaw cycles when the KGM concentration was 0.6 % and the oil phase fraction was 60 %. The results of flocculation degree and coalescence degree also indicated that KGM promoted the cross-linking between particles on the surface of the droplet and increased the thickness of the interfacial film of the droplet. Rheological analysis also proved the same result: the elastic modulus of the emulsion was still larger than the viscous modulus, which showed the ideal freeze thaw reversibility. After adding KGM, the emulsion formed a strong network structure with good stability for long-term storage and reversibility for freeze-thaw cycling/re-emulsification. Thus, the emulsion has broad application prospects in food, cosmetics, and pharmaceutical fields.
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Affiliation(s)
- Wei Xu
- College of Life Science, Xinyang Normal University, Xinyang 464000, China.
| | - Yuli Ning
- College of Life Science, Xinyang Normal University, Xinyang 464000, China
| | - Yuanyuan Sun
- College of Life Science, Xinyang Normal University, Xinyang 464000, China
| | - Haomin Sun
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Yin Jia
- College of Life Science, Xinyang Normal University, Xinyang 464000, China
| | - Liwen Chai
- College of Life Science, Xinyang Normal University, Xinyang 464000, China
| | - Denglin Luo
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Bakht Ramin Shah
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
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Effects of Abelmoschus manihot gum content, heating temperature and salt ions on the texture and rheology properties of konjac gum/Abelmoschus manihot gum composite gel. Int J Biol Macromol 2023; 236:123970. [PMID: 36906206 DOI: 10.1016/j.ijbiomac.2023.123970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/15/2023] [Accepted: 03/04/2023] [Indexed: 03/12/2023]
Abstract
To improve the gelling property of konjac gum (KGM) and enhance the application value of Abelmoschus manihot (L.) medic gum (AMG), a novel type of gel was prepared using KGM and AMG in this study. The effects of AMG content, heating temperature and salt ions on the characteristics of KGM/AMG composite gels were studied by Fourier transform infrared spectroscopy (FTIR), zeta potential, texture analysis and dynamic rheological behavior analysis. The results indicated that the AMG content, heating temperature and salt ions could affect the gel strength of KGM/AMG composite gels. Hardness, springiness, resilience, G', G* and η* of KGM/AMG composite gels increased when AMG content increased from 0 to 2.0 %, but they decreased when AMG increased from 2.0 % to 3.5 %. High-temperature treatment significantly enhanced the texture and rheological properties of KGM/AMG composite gels. The addition of salt ions reduced the zeta potential absolute value and weakened the texture and rheological properties of KGM/AMG composite gels. Furthermore, the KGM/AMG composite gels could be classified as non-covalent gels. The non-covalent linkages included hydrogen bonding and electrostatic interactions. These findings would help understand the properties and formation mechanism of KGM/AMG composite gels and help improve the application value of KGM and AMG.
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Green and recyclable graphitic carbon nitride/chitosan/polyvinyl alcohol photocatalytic films with efficient antibacterial activity for fruit packaging. Int J Biol Macromol 2023; 236:123974. [PMID: 36898454 DOI: 10.1016/j.ijbiomac.2023.123974] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/25/2023] [Accepted: 03/04/2023] [Indexed: 03/12/2023]
Abstract
Chitosan (CS) is an excellent raw material for the preparation of food packaging films due to its good film-forming properties, non-toxicity, and biodegradability. However, pure chitosan films have drawbacks such as weak mechanical properties and limited antimicrobial activity. In this work, novel food packaging films containing chitosan, polyvinyl alcohol (PVA) and porous graphitic carbon nitride (g-C3N4) were successfully prepared. The PVA served to improve the mechanical properties of the chitosan-based films, whilst the porous g-C3N4 acted as a photocatalytically-active antibacterial agent. The tensile strength (TS) and elongation at break (EAB) of the g-C3N4/CS/PVA films both increased by ~4 times compared to the pristine CS/PVA films at the optimum g-C3N4 loading of ~10 wt%. The addition of g-C3N4 increase the water contact angle (WCA) of the films from 38° to 50°, whilst decreasing the water vapor permeability (WVP) from 160 × 10-12 to 135 × 10-12 g∙Pa-1 s-1 m-1. The shelf life of strawberries covered with g-C3N4/CS/PVA films at room temperature could be extended up to 96 h, compared to 48 h and 72 h for strawberries covered with polyethylene (PE) films or CS/PVA films, respectively. The g-C3N4/CS/PVA films offered good antibacterial properties against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Further, the composite films could be easily recycled with the regenerated films offering almost identical mechanical properties and activities as the original films. The prepared g-C3N4/CS/PVA films thus offer promise for low-cost antimicrobial packaging applications.
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Wu H, Wu H, Qing Y, Wu C, Pang J. KGM/chitosan bio-nanocomposite films reinforced with ZNPs: Colloidal, physical, mechanical and structural attributes. Food Packag Shelf Life 2022. [DOI: 10.1016/j.fpsl.2022.100870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Ye S, Zhu J, Shah BR, Abel Wend-Soo Z, Li J, Zhan F, Li B. Preparation and characterization of konjac glucomannan (KGM) and deacetylated KGM (Da-KGM) obtained by sonication. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:4333-4344. [PMID: 35043977 DOI: 10.1002/jsfa.11786] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 01/06/2022] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Konjac glucomannan (KGM) has been widely applied in the food industry as a thickening and gelation agent because of its unique colloidal properties of viscosity enhancement and gelling ability. The current study aimed to prepare and characterize KGM and deacetylated KGM (Da-KGM) samples obtained by sonication in neutral and alkali ethanol-water solutions. RESULTS The results showed that the deacetylation degree (DD) of Da-KGM increased exponentially with alkali concentration. Fourier transform infrared spectrometry further confirmed the deacetylation reaction through the dramatic decrease in the acetyl group band at 1740 cm-1 . Besides, the high similarity among the tested groups in terms of X-ray diffraction (XRD) spectra implied a similar crystalline structure, while differential scanning calorimetry (DSC) curves revealed that the water binding capacity and decomposition temperature of KGM changed slightly with alkali and sonication treatment. The rheological profiles indicated that apparent viscosity (η0 ) of sonicated KGM samples was unchanged except for the T60 group (60 min sonication treatment). Particularly, ultrasonic treatment under high alkaline conditions (0.10 mol L-1 NaOH) was noted to promote the deacetylation reaction, and the obtained samples showed decreased apparent viscosity and weakened the gelation process in aqueous solution. Partial correction analysis indicated that alkali rather than ultrasonic treatment resulted in the change of DD and η0 in Da-KGM. Moreover, sonication contributed to off-white color by reducing the browning caused by alkali in Da-KGM products. CONCLUSION Ultrasound-mediated heterogeneous deacetylation reaction is a feasible way to prepare Da-KGM samples with lightened browning and controllable DD. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Shuxin Ye
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jingsong Zhu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Bakht Ramin Shah
- University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture and Protection of Waters, České Budějovice, Czech Republic
| | - Zongo Abel Wend-Soo
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jing Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Fuchao Zhan
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Bin Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
- Hubei Collaborative Innovation Centre for Industrial Fermentation, Hubei University of Technology, Wuhan, China
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Wuhan, China
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13
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Chen Y, Shang L, Li S, Li B, Li J. Air packaging is obviously beneficial to the heterogeneous hygrothermal degradation of konjac glucomannan. Int J Biol Macromol 2022; 220:13-21. [PMID: 35963342 DOI: 10.1016/j.ijbiomac.2022.08.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/04/2022] [Accepted: 08/07/2022] [Indexed: 11/16/2022]
Abstract
Heterogeneous hygrothermal degradation (HHTD) is a cost-effective and environmentally friendly method for the successful preparation of partially depolymerized konjac glucomannan (DKGM). This study investigated the degradation of konjac glucomannan (KGM) in two packaging methods and detected that compared with natural KGM, the Mw of vacuum-packaged DKGM with 20 % moisture content treated at 130 °C for 40 min was reduced by 23.34 %, while that of air-packaged DKGM was decreased by 63.14 %, the vacuum-packaged DKGM with only 0.5 % H2O2 added was dropped by 69.36 %. It was verified that oxygen in air-packaging plays a crucial role in HHTD. Furthermore, the effects of moisture content, treatment temperature and time on the Mw and apparent viscosity of air-packaged DKGM were explored. The properties and structure of DKGM were characterized by rheometer, TGA, XRD, FT-IR and SEM. Results established that treatment temperature had a stronger promoting effect on HHTD. The rheological properties of DKGM samples changed markedly, and the thermal decomposition temperature and crystallinity were increased, with its infrared absorption peaks very close. This research is expected to provide theoretical bases and reference ideas for efficient HHTD method of KGM in actual production.
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Affiliation(s)
- Yuanyuan Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Longchen Shang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Sha Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Bin Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Jing Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China.
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14
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Liu L, Zhou N, Yang Y, Huang X, Qiu R, Pang J, Wu S. Rheological properties of konjac glucomannan composite colloids in strong shear flow affected by mesoscopic structures: multi-scale simulation and experiment. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Production and characterization of composite films with zein nanoparticles based on the complexity of continuous film matrix. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113396] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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Guo Y, Wu M, Li R, Cai Z, Zhang H. Thermostable physically crosslinked cryogel from carboxymethylated konjac glucomannan fabricated by freeze-thawing. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107103] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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17
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Teng X, Zhang M, Mujumdar AS. Potential application of laser technology in food processing. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.10.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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18
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Ye S, Zongo AWS, Shah BR, Li J, Li B. Konjac Glucomannan (KGM), Deacetylated KGM (Da-KGM), and Degraded KGM Derivatives: A Special Focus on Colloidal Nutrition. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:12921-12932. [PMID: 34713703 DOI: 10.1021/acs.jafc.1c03647] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Konjac flour, mainly obtained and purified from the tubers ofAmorphophallus konjac C. Koch, yields a high molecular weight (Mw) and viscous hydrocolloidal polysaccharide: konjac glucomannan (KGM). KGM has been widely applied in the food industry as a thickening and gelation agent as a result of its unique colloidal properties of effective viscosity enhancement and thermal-irreversible gelling. This review first narrates the typical commercial KGM source species, the industrial production, and the purification process of KGM flour. The structural information on native KGM, gelation mechanisms of alkali-induced deacetylated KGM (Da-KGM) hydrogel, progress on degraded KGM derivatives, cryoprotection effect, and colloidal nutrition are highlighted. Finally, the regulatory requirements of konjac flour and KGM among different countries are briefly introduced. The fine structure and physicochemical properties of KGM can be regulated in a great range via the deacetylation or degradation reaction. Here, the relationship between the physicochemical properties, such as viscosity, solubility, gelation, and nutritional effects, of native KGM, Da-KGM, and degraded KGM derivatives was preliminary established, which would provide theoretical guidance for designing KGM-based products with certain nutritional needs.
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Affiliation(s)
- Shuxin Ye
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan, Hubei 430070, People's Republic of China
| | - Abel Wend-Soo Zongo
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan, Hubei 430070, People's Republic of China
| | - Bakht Ramin Shah
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture and Protection of Waters, University of South Bohemia in Ceske Budejovice, Na Sádkách 1780, 370 05 České Budějovice, Czech Republic
| | - Jing Li
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan, Hubei 430070, People's Republic of China
| | - Bin Li
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan, Hubei 430070, People's Republic of China
- Hubei Collaborative Innovation Centre for Industrial Fermentation, Hubei University of Technology, Wuhan, Hubei 430068, People's Republic of China
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Wuhan, Hubei 430070, People's Republic of China
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19
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Guo L, Yokoyama W, Chen L, Liu F, Chen M, Zhong F. Characterization and physicochemical properties analysis of konjac glucomannan: Implications for structure-properties relationships. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106818] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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20
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Konjac glucomannan molecular and rheological properties that delay gastric emptying and improve the regulation of appetite. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106894] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Li Y, Liu H, Xie Y, Shabani KI, Liu X. Preparation, characterization and physicochemical properties of Konjac glucomannan depolymerized by ozone assisted with microwave treatment. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Enhanced functional properties of chitosan films incorporated with curcumin-loaded hollow graphitic carbon nitride nanoparticles for bananas preservation. Food Chem 2021; 366:130539. [PMID: 34284191 DOI: 10.1016/j.foodchem.2021.130539] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 06/28/2021] [Accepted: 07/04/2021] [Indexed: 02/06/2023]
Abstract
The exploration of novel functional packaging films is of great scientific and technological interest. Herein, a novel chitosan/hollow g-C3N4/curcumin (CS-HCNS-Cur) biocomposite films was successful fabricated with integrated functions of slow release, antimicrobial activity and food freshness preservation. CS-HCNS-Cur films take the advantages of the excellent thermal stability and slow-release ability of HCNS to curcumin. Among the characterizations including scanning electron microscopy, transmission electron microscope, atomic force microscopy, fourier transform infrared spectroscopy, mechanical properties and the rheological properties measurements confirmed the successful fabrication of CS-HCNS-Cur films. The averaged water contact angle and water vapor permeability of this film were 105.83° and 105.03 × 10-5 g·mm (m2·h·kPa)-1, respectively. This film showed pH-responsive and slow-release ability. Moreover, this film can effectively store bananas for 10 days. Therefore, CS-HCNS-Cur films have promising potential for applications in functional food packaging.
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23
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Martínez-Padilla LP, Sosa-Herrera MG, Osnaya-Becerril M. Effect of the konjac glucomannan concentration on the rheological behaviour and stability of sodium caseinate oil-in-water emulsions. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.104993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Ni Y, Shi S, Li M, Zhang L, Yang C, Du T, Wang S, Nie H, Sun J, Zhang W, Wang J. Visible light responsive, self-activated bionanocomposite films with sustained antimicrobial activity for food packaging. Food Chem 2021; 362:130201. [PMID: 34090044 DOI: 10.1016/j.foodchem.2021.130201] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/17/2021] [Accepted: 05/23/2021] [Indexed: 10/21/2022]
Abstract
The research on a new type of low-cost, less-loss and adjustable sustained antibacterial activity food packaging films with self-activation ability and great industrialization potentiality is of great scientific and technological interest. Herein, a novel chitosan/negatively charged graphitic carbon nitride self-activation bionanocomposite films was prepared by one-step electrostatic self-assembly. First, the antibacterial efficiency of this film could reach to 99.8 ± 0.26% against E. coli and 99.9 ± 0.04% against S. aureus through self-activated under visible light. Second, this film can effectively extend the shelf life of tangerines to 24 days. Hemolysis and cell experiment test proved that this film was safe and nontoxic. Finally, negatively charged graphitic carbon nitride with low-cost can improve the mechanical, thermal and hydrophobic properties of neat chitosan films. This work can provide a new pathway for the preparation of low-cost packaging films with excellent visible light responsive property and sustainable antibacterial activity.
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Affiliation(s)
- Yongsheng Ni
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Shuo Shi
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Min Li
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Liang Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Chengyuan Yang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Ting Du
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Shaochi Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Hongqing Nie
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jing Sun
- Qinghai Provincial Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Qinghai 810008, China
| | - Wentao Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China.
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25
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26
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Ni Y, Sun J, Wang J. Enhanced antimicrobial activity of konjac glucomannan nanocomposite films for food packaging. Carbohydr Polym 2021; 267:118215. [PMID: 34119169 DOI: 10.1016/j.carbpol.2021.118215] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 04/19/2021] [Accepted: 05/13/2021] [Indexed: 01/03/2023]
Abstract
This paper aims at providing a new strategy for developing konjac glucomannan-based antibacterial films with excellent performances. Here, novel nanocomposite films based on photodynamic and photothermal synergism strategy were developed by incorporating graphite carbon nitride nanosheets/MoS2 nanodots (CNMo) into konjac glucomannan (KGM) matrix. Scanning electron microscope, transmission electron microscope, high resolution transmission, high angle annular dark field and element mapping confirmed the successful fabrication of CNMo. The steady and dynamic rheological behavior as well as the good stability of film-forming solution showed that the intermolecular hydrogen bonding was formed. The influences of CNMo content on the structural, mechanical and thermal properties as well as hydrophobicity of KGM films were investigated. This film has a broad-spectrum antibacterial activity. It could prolong the shelf life of cherry tomatoes. Moreover, hemolysis and cells experiment confirm that this film is safe. This strategy is expected to broaden the application of antibacterial packaging.
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Affiliation(s)
- Yongsheng Ni
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jing Sun
- Qinghai Provincial Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Qinghai 810008, China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China.
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27
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Preparation and characterization of citric acid crosslinked konjac glucomannan/surface deacetylated chitin nanofibers bionanocomposite film. Int J Biol Macromol 2020; 164:2612-2621. [DOI: 10.1016/j.ijbiomac.2020.08.138] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/14/2020] [Accepted: 08/17/2020] [Indexed: 01/25/2023]
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28
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Lin W, Ni Y, Pang J. Size effect-inspired fabrication of konjac glucomannan/polycaprolactone fiber films for antibacterial food packaging. Int J Biol Macromol 2020; 149:853-860. [DOI: 10.1016/j.ijbiomac.2020.01.242] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 01/06/2020] [Accepted: 01/23/2020] [Indexed: 01/15/2023]
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29
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He S, Gu C, Wang D, Xu W, Wang R, Ma Y. The stability and in vitro digestion of curcumin emulsions containing Konjac glucomannan. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2019.108672] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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30
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Wu C, Li Y, Sun J, Lu Y, Tong C, Wang L, Yan Z, Pang J. Novel konjac glucomannan films with oxidized chitin nanocrystals immobilized red cabbage anthocyanins for intelligent food packaging. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105245] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Robust microfluidic construction of konjac glucomannan-based micro-films for active food packaging. Int J Biol Macromol 2019; 137:982-991. [DOI: 10.1016/j.ijbiomac.2019.07.045] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 07/02/2019] [Accepted: 07/07/2019] [Indexed: 12/16/2022]
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32
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Lin W, Ni Y, Pang J. Microfluidic spinning of poly (methyl methacrylate)/konjac glucomannan active food packaging films based on hydrophilic/hydrophobic strategy. Carbohydr Polym 2019; 222:114986. [PMID: 31320090 DOI: 10.1016/j.carbpol.2019.114986] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 05/15/2019] [Accepted: 06/07/2019] [Indexed: 10/26/2022]
Abstract
Here, inspired by the hydrophilic/hydrophobic theory, a novel konjac glucomannan/poly (methyl methacrylate)/chlorogenic acid (KGM/PMMA/CGA) food packaging film was successfully fabricated via microfluidic spinning technology (MST). The results of fourier transform infrared spectroscopy and x-ray diffraction confirmed the formation of hydrogen bonds in the films, which lead to the enhanced mechanical properties. Thermogravimetric analysis and differential scanning calorimetry showed excellent thermal stability of the films. Water vapor permeability (1.47 × 10-5 ± 0.11 g/(m⋅h⋅kPa)) and water contact angle (89.2°) measurement proved that the films were hydrophobic. The good swelling degree (85.18 ± 15.65%) indicated film's potentials in releasing CGA. More importantly, KGM played a key role in the antibacterial activities against Staphylococcus aureus (8.5 ± 3.5 mm) and Escherichia coli (6.5 ± 2.1 mm) by utilizing its hydrophilicity. Thus, our present work may provide a new idea for constructing active food packaging films with significant performances based on hydrophilic/hydrophobic strategy.
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Affiliation(s)
- Wanmei Lin
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yongsheng Ni
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jie Pang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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