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Zhang K, Wang Y, Fan X, Li N, Tan Z, Liu H, Liu X, Zhou D, Li D. Effects of calcium chloride on the gelling and digestive characteristics of myofibrillar protein in Litopenaeus vannamei. Food Chem 2024; 441:138348. [PMID: 38199106 DOI: 10.1016/j.foodchem.2023.138348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/11/2023] [Accepted: 12/31/2023] [Indexed: 01/12/2024]
Abstract
In this study, the effects of CaCl2 (0, 25, 50, 75, and 100 mM) on the gelling and digestive properties of the myofibrillar protein (MP) in Litopenaeus vannamei were investigated. The results showed that increasing CaCl2 concentration led to changes in the tertiary structure of MP. Specifically, compared with the control group, a 64.31 % increase in surface hydrophobicity and a 45.90 % decrease in the sulfhydryl group were observed after 100 mM CaCl2 treatment. Correspondingly, the water holding capacity and strength of the MP gel increased by 24.46 % and 55.99 %, respectively. These changes were positively correlated with the rheological properties, microstructure pore size, and content of non-flowable water. The mechanical properties of MP gel were improved, and the microstructure became more compact with the increase in CaCl2 concentration. Furthermore, the particle size of the digested MP gels decreased in the presence of CaCl2, which improved the digestion characteristics of MP gels.
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Affiliation(s)
- Kexin Zhang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Yefan Wang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Xin Fan
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Na Li
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Zhifeng Tan
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Huilin Liu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Xiaoyang Liu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Dayong Zhou
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Deyang Li
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China.
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Xie J, Li D, Wang Y. The bioreduction of U(VI) and Pu(IV): Experimental and thermodynamic studies. J Environ Radioact 2024; 272:107356. [PMID: 38113757 DOI: 10.1016/j.jenvrad.2023.107356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/16/2023] [Accepted: 12/09/2023] [Indexed: 12/21/2023]
Abstract
The experimental and thermodynamic bioreduction of U(VI)aq and Pu(IV)am was studied in order to more accurately predict their transport velocities in groundwater and assess the contamination risks to the associated environments. The results obtained in this study emphasize the impact of carbonate-calcium and humic acids at 7.1 and anoxic solutions on the rate and extent of U(VI)aq and Pu(IV)am bioreduction by Shewanella putrefaciens. We found that the bioreduction rate of U(VI)aq became slow in the presence of NaHCO3/CaCl2. The more negative standard redox potentials of the ternary complexes of U(VI)-Ca2+-CO32- accounted for the decreased rate of bioreduction, e.g., [Formula: see text] = -0.6797 V ≪ [Formula: see text] = 0.3862 V. The bioreduction of Pu(IV)am seemed feasible, while humic acids accepted the adequate extracellular electrons secreted by S. putrefaciens, and the redox potential of Eh(HAox/HAred) was lower than Eh(PuO2(am)/Pu3+), e.g., Eh(HAox/HAred) ≦ Eh(PuO2(am)/Pu3+) if humic acids accepted ≧ 7.952 × 10-7 mol of electrons. The standard redox potentials, Eho(PuO2(am)/Pu3+) = 0.9295 V ≫ [Formula: see text] = -0.6797 V, cannot explain the reduction extent of Pu(IV)am (8.9%), which is notably smaller than that of U(VI)aq (74.9%). In fact, the redox potential of Pu(IV)am was distinctly negative under the experimental conditions of trace-level Pu(IV)am (∼2.8 × 10-9 mol/L Pu(IV) if Pu(IV)am was completely dissolved), e.g., Eh(PuO2(am)/Pu3+) = -0.1590 V (α(Pu3+) = 10-10 mol/L, pH = 7.1). Therefore, the chemical factor of Pu3+ activity, leading to a rapid drop in Eh(PuO2(am)/Pu3+) at trace-level Pu(IV)am, was responsible for the relatively small reduction extent of Pu(IV)am.
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Affiliation(s)
- Jinchuan Xie
- Institute of Military-Civilian Integration Technology, Northwest University of Political Science and Law, Xi'an, Shaanxi, 710122, China.
| | - Dongyan Li
- Institute of Military-Civilian Integration Technology, Northwest University of Political Science and Law, Xi'an, Shaanxi, 710122, China
| | - Yu Wang
- Northwest Institute of Nuclear Technology, P.O. Box 69-14, Xi'an, Shaanxi, 710024, China
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Seo JW, Jung WK, Park YH, Bae H. Development of cultivable alginate fibers for an ideal cell-cultivated meat scaffold and production of hybrid cultured meat. Carbohydr Polym 2023; 321:121287. [PMID: 37739499 DOI: 10.1016/j.carbpol.2023.121287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/25/2023] [Accepted: 08/09/2023] [Indexed: 09/24/2023]
Abstract
Slaughtering animals for meat pose several challenges, including environmental pollution and ethical concerns. Scaffold-based cell-cultivated meat has been proposed as a solution to these problems, however, the utilization of animal-derived materials for scaffolding or the high cost of production remains a significant challenge. Alginate is an ideal material for cell-cultivated meat scaffolds but has poor cell adhesion properties. To address this issue, we achieved 82 % cell adhesion coverage by controlling the specific structure generated during the ionic crosslinking process of alginate. Post 11 days of culture; we evaluated cell adhesion, differentiation, and aligned cell networks. The cell growth increased by 12.7 % compared to the initial seeding concentration. Finally, we created hybrid cell-cultivated meat by combining single-cell protein from mycelium and cell-cultivated meat. This is non-animal based, edible, cost-effective, and has a desirable texture by blending cell-cultivated meat with a meat analogue. In summary, the creation of improved alginate fibers can effectively tackle various obstacles encountered in the manufacturing of cell-cultivated meat. This includes enhancing cell adhesion, reducing costs, and streamlining the production procedure.
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Affiliation(s)
- Jeong Wook Seo
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea; NoAH Biotech Co., Ltd., Suwon-si, Gyeonggi-do 16614, Republic of Korea
| | - Woo Kyung Jung
- NoAH Biotech Co., Ltd., Suwon-si, Gyeonggi-do 16614, Republic of Korea
| | - Yong Ho Park
- NoAH Biotech Co., Ltd., Suwon-si, Gyeonggi-do 16614, Republic of Korea; Department of Microbiology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hojae Bae
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea; Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
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Du J, Tian L, Qi M, Zhang C, Di H, Zhi X, Zhu J. Revealing maleic acid role in the preparation of α-hemihydrate gypsum from titanium gypsum through experiments and DFT calculations. Sci Total Environ 2023; 897:166405. [PMID: 37597561 DOI: 10.1016/j.scitotenv.2023.166405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/04/2023] [Accepted: 08/16/2023] [Indexed: 08/21/2023]
Abstract
Titanium gypsum (TG) is rarely used to produce α-hemihydrate gypsum (α-HH) because of its poor crystallinity and high impurity and moisture contents. Here, a method is proposed to prepare α - HH by adjusting the reaction temperature, CaCl2 solution concentration and maleic acid dosage based on acid leaching and heat-treated TG as raw material. The effect of maleic acid and Fe3+ ions on the preparation of α-HH were systematically analyzed using density functional theory (DFT) and typical materials characterization methods, X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). Under the optimal conditions (CaCl2 concentration of 23 % and reaction temperature of 95 °C), the maleic acid is chemically adsorbed on the crystal surfaces of α-HH, the strongest adsorption is in the (111) surface. Increasing the maleic acid concentration from 0 to 0.15 % decreased the aspect ratio of the α-HH crystals from 8.26 to 0.96, respectively, where the optimal dosage was 0.1 %. The theoretical results proved that the substitution energy of Fe3+ was greater than that of Ca2+, and Fe3+ ions can spontaneously enter the α-HH lattice to replace Ca2+ ions. Furthermore, the adsorption energy of maleic acid on the (111) surface increased after the substitution of Fe3+ to generate a synergistic effect that hinders α-HH growth along the c-axis, resulting in the preferred morphology. The results of this study provide a new method for using waste TG to produce a high-value-added product.
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Affiliation(s)
- Jingwei Du
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, Henan, China
| | - Lin Tian
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, Henan, China
| | - Manfu Qi
- LB Group Co., Ltd, Jiaozuo 45411, Henan, China
| | - Chen Zhang
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, Henan, China
| | - Hongfeng Di
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, Henan, China
| | - Xiao Zhi
- China National Building Material Group Co., Ltd, Beijing 10000, China.
| | - Jianping Zhu
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, Henan, China.
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Guo R, Liu L, Huang Y, Lv M, Zhu Y, Wang Z, Zhu X, Sun B. Effect of Na + and Ca 2+ on the texture, structure and microstructure of composite protein gel of mung bean protein and wheat gluten. Food Res Int 2023; 172:113124. [PMID: 37689843 DOI: 10.1016/j.foodres.2023.113124] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/06/2023] [Accepted: 06/09/2023] [Indexed: 09/11/2023]
Abstract
To investigate the change of ionic strength on the gel characteristics during the processing of mung bean protein-based foods, the effects of NaCl and CaCl2 at different concentrations (0-0.005 g/mL) on the properties of mung bean protein (MBP) and wheat gluten (WG) composite protein gel were studied. The results showed that low concentration (0.001-0.002 g/mL) could significantly improve the water holding capacity (WHC), storage modulus (G') and texture properties of composite protein gel (MBP/WG), while the surface hydrophobicity (H0) and solubility were significantly decreased (P < 0.05). With the increase of ion concentration, the secondary structures of MBP/WG shifted from α-helix to β-sheet, and the fluorescence spectra also showed fluorescence quenching phenomenon. By analyzing the intermolecular forces of MBP/WG, it was found that with the addition of salt ions, the hydrogen bonds was weakened and the electrostatic interactions, hydrophobic interactions and disulfide bonds were enhanced, which in turn the aggregation behavior of MBP/WG composite protein gel was affected and larger aggregates between the proteins were formed. It could be also demonstrated that the gel network was denser due to the addition of these large aggregates, thus the gel properties of MBP/WG was improved. However, too many salt ions could disrupt the stable network structure of protein gel. This study can provide theoretical support to expand the development of new mung bean protein products.
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Affiliation(s)
- Ruqi Guo
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Linlin Liu
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Yuyang Huang
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Mingshou Lv
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Ying Zhu
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Zihan Wang
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China
| | - Xiuqing Zhu
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China.
| | - Bingyu Sun
- Department of Food Engineering, Heilongjiang Key Laboratory of Food Science and Engineering, Heilongjiang Key Laboratory of Grain Food and Comprehensive Processing, Harbin University of Commerce, Harbin 150028, Heilongjiang, China.
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Zhang J, Cheng K, Ma B, Zhang W, Zheng L, Wang Y. CaCl 2 promotes the cross adaptation of Reaumuria trigyna to salt and drought by regulating Na +, ROS accumulation and programmed cell death. Plant Physiol Biochem 2023; 195:214-227. [PMID: 36641945 DOI: 10.1016/j.plaphy.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/18/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Reaumuria trigyna, a salt-secreting xerophytic shrub endemic to arid desert regions of northwest China, is extremely adaptable to salt and aridity. In this study, we used PEG to simulates drought stress and investigated the effect of NaCl and CaCl2 on R. trigyna seedlings exposed to drought stress. Exogenous application moderate NaCl and CaCl2 were found to stimulate the growth and alleviate drought stress in R. trigyna seedlings. Moderate NaCl and CaCl2 combined treatment increased fresh weight and decreased electrolyte leakage, and malondialdehyde (MDA) content in R. trigyna seedlings under drought stress. Simultaneously, leaf senescence and root damage induced by drought stress were alleviated, with programmed cell death (PCD) related genes expression down-regulated. Among them, the application of CaCl2 under drought and salt treatment is the most effective way to increase osmotic regulators content, antioxidant enzymes activities, and related genes expressions of plants under drought stress, which scavenged excess reactive oxygen species (ROS) and alleviated oxidative damage caused by drought stress. Meanwhile, CaCl2 can reduce the content of Na+and the ratio of Na+/K+ by promoting the outflow of Na+ and inflow of Ca2+, as well as the expression of ion transporter gene, and reduce the ionic toxicity caused by drought and salt cross adaptation. The principal component analysis (PCA) showed that the relevant beneficial indicators were positively correlated with the combined treatment. These results indicated that moderate NaCl can positively regulates defense response to drought stress in R. trigyna, while CaCl2 can significantly promote this process.
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Affiliation(s)
- Jie Zhang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Kai Cheng
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Bingjie Ma
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Wenxiu Zhang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Lingling Zheng
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yingchun Wang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China.
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Wang Y, Shen C, Jiang Q, Wang Z, Gao C, Wang W. Seed priming with calcium chloride enhances stress tolerance in rice seedlings. Plant Sci 2022; 323:111381. [PMID: 35853520 DOI: 10.1016/j.plantsci.2022.111381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 07/08/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
Calcium is a crucial second messenger in plant cells and contributes to plant resistance against biotic and abiotic stress. Plant defense priming with natural or synthetic compounds leads to quicker and stronger resistance responses. However, whether pretreatment of plant seeds with calcium could improve their resistance to stress remains poorly understood. In this study, we showed that rice seedlings grown from calcium chloride (CaCl2)-pretreated seeds displayed enhanced resistance to the rice blast fungus Magnaporthe oryzae and the rice bacterial pathogen Xanthomonas oryzae pv. Oryzae (Xoo). Seed priming with CaCl2 also led to enhanced rice tolerance to salt and cold. Furthermore, the reactive oxygen species (ROS) burst increased significantly upon immunity activation in the leaves of rice seedlings grown from CaCl2-pretreated seeds. Additionally, we analyzed the rice calmodulin-binding protein 60 (OsCBP60) family and found that there were 19 OsCBP60s in rice cultivar Zhonghua 11 (ZH11). The transcripts of several OsCBP60s were chitin- and M. oryzae-inducible, suggesting that they may contribute to rice resistance. Taken together, these data indicate that seed priming with CaCl2 can effectively enhance rice tolerance to multiple stresses, perhaps by boosting the burst of ROS, and OsCBP60 family members may also play an essential role in this process.
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Affiliation(s)
- Yameng Wang
- State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chengbin Shen
- State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Qiaochu Jiang
- State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhanchun Wang
- State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chenyang Gao
- State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Wei Wang
- State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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Yang X, Xie M, Guan C, Yingchen, Guo R, Ma C, Xu H, Shao M. Effect of CaCl 2 on 2 heat-induced whey protein concentrate fibrillation pathways: Spontaneous and nuclear induction. J Dairy Sci 2022; 105:5573-5586. [PMID: 35570036 DOI: 10.3168/jds.2021-20895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 03/12/2022] [Indexed: 11/19/2022]
Abstract
Amyloid fibrils have many excellent functional properties that facilitate their applications in the food industry. There are 2 pathways for whey protein concentrate (WPC) to form amyloid fibril aggregates: spontaneous pathway and nuclear induction pathway. Low ionic strength is a necessary condition for the spontaneous pathway to proceed successfully. In this paper, the effect of salt ions on 2 WPC fibrillation pathways was investigated by adding CaCl2. The results demonstrated WPC fibrils were unable to form normally through spontaneous pathway as adding CaCl2; but still could form through nuclear induction pathway with 20 to 30 mM CaCl2, the nuclei accelerated the fibrillation process led to the resistance to the disordered aggregation brought by CaCl2. Moreover, divalent cations (Ca2+, Mg2+) had much stronger effects than monovalent cations (Na+) on fibril formation, and the results of X-ray photoelectron spectrum together with Fourier-transform infrared spectroscopy suggested that Ca2+ had a greater effect on the fibril formation than Cl-.
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Affiliation(s)
- Xiaotong Yang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Mingming Xie
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Chen Guan
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Yingchen
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Ruichi Guo
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Caihong Ma
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Honghua Xu
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, People's Republic of China.
| | - Meili Shao
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, People's Republic of China.
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9
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Yang J, Tan Z, Chen X, Liang Y, Zheng M, Hu H, Dong H, Liu X, Liu Y, Xiao Y. A mild method to prepare nitrogen-rich interlaced porous carbon nanosheets for high-performance supercapacitors. J Colloid Interface Sci 2021; 599:381-389. [PMID: 33962199 DOI: 10.1016/j.jcis.2021.04.119] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/19/2021] [Accepted: 04/25/2021] [Indexed: 01/22/2023]
Abstract
In this work, a non-toxic and mild strategy was presented to efficiently fabricate porous and nitrogen-doped carbon nanosheets. Silkworm cocoon (SCs) acted as carbon source and original nitrogen source. Sodium carbonate (Na2CO3) could facilitate the SCs to expose silk protein and played a catalytic role in the subsequent activation of calcium chloride (CaCl2). Calcium chloride served as pore-making agent. The as-obtained carbon materials with protuberant porous nanosheets exhibit high specific surface area of 731 m2 g-1, rich native nitrogen-doped of 7.91 atomic %, wide pore size distribution from 0.5 to 65 nm, and thus possessing high areal specific capacitances of 34 μF cm-2 as well as excellent retention rate of 97% after 20 000 cycles at a current density of 20 A g-1 in 6 M KOH electrolyte. The assembled carbon nanosheet-based supercapacitor displays a maximum energy density of 21.06 Wh kg-1 at the power density of 225 W kg-1 in 1 M Na2SO4 electrolyte. Experimental results show that a mild and non-toxic treatment of biomass can be an effective and extensible method for preparing optimal porous carbon for electrochemical energy storage.
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Affiliation(s)
- Jiewei Yang
- Key Laboratory for Biomassed Materias and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Zhixiang Tan
- Key Laboratory for Biomassed Materias and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Xun Chen
- Key Laboratory for Biomassed Materias and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Yeru Liang
- Key Laboratory for Biomassed Materias and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Mingtao Zheng
- Key Laboratory for Biomassed Materias and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Hang Hu
- Key Laboratory for Biomassed Materias and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Hanwu Dong
- Key Laboratory for Biomassed Materias and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xiangrong Liu
- Key Laboratory for Biomassed Materias and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Yingliang Liu
- Key Laboratory for Biomassed Materias and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China.
| | - Yong Xiao
- Key Laboratory for Biomassed Materias and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China.
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Hajikolaei MRH, Nouri M, Amirabadi SH, Shariari A, Constable PD. Effect of antepartum vitamin D 3 (cholecalciferol) and postpartum oral calcium administration on serum total calcium concentration in Holstein cows fed an acidogenic diet in late gestation. Res Vet Sci 2021; 136:239-46. [PMID: 33706075 DOI: 10.1016/j.rvsc.2021.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 01/08/2021] [Accepted: 02/17/2021] [Indexed: 11/22/2022]
Abstract
Several strategies are available to control periparturient hypocalcaemia in dairy cows. Three complementary strategies were applied in this study: feeding a low DCAD (acidogenic) ration during late gestation, oral vitamin D3 (cholecalciferol) administration in late gestation, and oral Ca administration immediately after parturition. Multiparous Holstein cows (n = 240) were fed an acidogenic ration in late gestation and randomly assigned to one of three treatment groups. Group A (n = 80) were fed the acidogenic diet without supplementary Ca or cholecalciferol. Group Ca + A (n = 80) received 50 g of Ca as an oral bolus at calving and 12 h later. Group D3 + Ca + A (n = 80) were administered 3 mg of cholecalciferol orally each day starting 3 to 5 days before the anticipated calving date and 50 g of Ca as an oral bolus at calving and 12 h later. Blood and urine samples were obtained periodically from a random subset of 20 cows in each group from day 5 antepartum to day 21 postpartum and selected analytes measured. Data was analyzed using mixed models analysis. Serum Ca concentrations in group D3 + Ca + A were higher 12 h before and at parturition, compared to the two other groups. Oral Ca administration transiently increased mean serum Ca concentrations at 6 h after treatment initiation in groups D3 + Ca + A and Ca + A. We conclude that daily oral administration of 3 mg of cholecalciferol for up to 5 days before calving, combined with feeding an acidogenic ration in late gestation and oral Ca immediately after parturition, provided the highest periparturient serum Ca concentrations.
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11
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Buss N, Nelson KN, Hua J, Relyea RA. Effects of different roadway deicing salts on host-parasite interactions: The importance of salt type. Environ Pollut 2020; 266:115244. [PMID: 32688196 DOI: 10.1016/j.envpol.2020.115244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 07/10/2020] [Accepted: 07/11/2020] [Indexed: 05/27/2023]
Abstract
The application of roadway deicing salts is increasing the salinity of freshwater systems. Increased salinization from salts, such as NaCl, CaCl2 and MgCl2, can have direct, negative impacts on freshwater organisms at concentrations found in nature. Yet, our understanding of how these salts can indirectly impact freshwater organisms by altering important ecological interactions, such as those between hosts and their parasites, is limited. Using a larval amphibian and infectious free-living helminth (i.e. trematode) model, we examined whether exposure to environmentally relevant concentrations of NaCl, CaCl2 and MgCl2 1) influence trematode mortality; 2) alter amphibian-trematode interactions; and 3) alter larval amphibian activity (a behavior associated with parasite avoidance). We found that exposure to CaCl2 greatly reduced trematode survival across all Cl- concentrations (230, 500, 860 and 1000 mg Cl- L-1) while NaCl and MgCl2 had no effect. When both host and parasites were exposed to the salts, exposure to NaCl, but not MgCl2 or CaCl2, increased infection. The lack of effect of CaCl2 on infection was likely driven by CaCl2 reducing trematode survival. Exposure to NaCl increased infection at 500 mg Cl- L-1, but not 230 or 860 mg Cl- L-1. Increased infection was not due to salt exposure altering tadpole behavior. Our results suggest that NaCl can negatively impact amphibian populations indirectly by increasing trematode infections in tadpole hosts.
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Affiliation(s)
- Nicholas Buss
- Biological Sciences Department, Binghamton University (SUNY), Binghamton, NY, 13902, USA.
| | - Kiersten N Nelson
- Department of Biological Sciences, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY, 12180, USA
| | - Jessica Hua
- Biological Sciences Department, Binghamton University (SUNY), Binghamton, NY, 13902, USA
| | - Rick A Relyea
- Department of Biological Sciences, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY, 12180, USA
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12
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Hedayati S, Shahidi F, Majzoobi M, Koocheki A, Farahnaky A. Structural, rheological, pasting and textural properties of granular cold water swelling maize starch: Effect of NaCl and CaCl 2. Carbohydr Polym 2020; 242:116406. [PMID: 32564824 DOI: 10.1016/j.carbpol.2020.116406] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/02/2020] [Accepted: 05/03/2020] [Indexed: 10/24/2022]
Abstract
In this study granular cold water swelling (GCWS) starches were subjected to 0, 50, 100, 150 and 200 mM NaCl and CaCl2 and their effects on microstructure, rheological, pasting, and textural properties were determined. SEM images revealed that NaCl decreased the thickness of GCWS starch paste cell walls while, CaCl2 resulted in formation of denser and more homogenous pastes. The atomic force microscopy (AFM) results showed that NaCl increased the surface wrinkles of starch granules but CaCl2 reduced the roughness of starch granule surface. Zeta potential measurements showed both salts reduced the negative values and CaCl2 was more effective than NaCl. The steady shear measurements showed the shear thinning behavior of the samples. Starch pastes incorporated with NaCl had lower consistency coefficient (K) and apparent viscosity. However, the CaCl2 containing samples were more viscous. The pasting and textural parameters were increased by the increase of CaCl2 but decreased with NaCl.
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Affiliation(s)
- Sara Hedayati
- Department of Food Science and Technology, Faculty of agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, Iran; Nutrition Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fakhri Shahidi
- Department of Food Science and Technology, Faculty of agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, Iran.
| | - Mahsa Majzoobi
- Department of Food Science and Technology, School of Agriculture, Shiraz University, Shiraz, Iran; School of Science, RMIT University, Bundoora West Campus, Melbourne, VIC, 3083, Australia
| | - Arash Koocheki
- Department of Food Science and Technology, Faculty of agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, Iran
| | - Asgar Farahnaky
- Department of Food Science and Technology, School of Agriculture, Shiraz University, Shiraz, Iran; School of Science, RMIT University, Bundoora West Campus, Melbourne, VIC, 3083, Australia
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13
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Zhuang L, Xu K, Zhu Y, Wang F, Xiao J, Guo L. Calcium affects glucoraphanin metabolism in broccoli sprouts under ZnSO 4 stress. Food Chem 2020; 334:127520. [PMID: 32693332 DOI: 10.1016/j.foodchem.2020.127520] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 06/23/2020] [Accepted: 07/05/2020] [Indexed: 10/23/2022]
Abstract
CaCl2, Ca2+ chelator (EGTA) and Ca2+ channel blocker (verapamil) were used to investigate mechanism of glucoraphanin metabolism in broccoli sprouts under ZnSO4 stress. CaCl2 treatment promoted sprout growth, reduced MDA (malonaldehyde) content and electrolyte leakage in sprouts under ZnSO4 stress. The highest MDA content and electrolyte leakage were obtained in ZnSO4 plus verapamil-treated sprouts. In addition, ZnSO4 plus CaCl2 treatment significantly enhanced glucoraphanin content and sulforaphane formation, while an opposite result was observed after ZnSO4 plus EGTA treatment; which were further supported by expression of glucoraphanin biosynthetic and hydrolytic genes as well as myrosinase (MYR) and epithiospecifier protein (ESP) activities. These results indicated that exogenous and endogenous calcium promoted glucoraphanin biosynthesis and the conversion rate of glucoraphanin into sulforaphane. Verapamil treatment also stimulated glucoraphanin biosynthesis, but exerted an adverse influence on sulforaphane formation from the hydrolysis of glucoraphanin because of much higher ESP expression and ESP activity than ZnSO4 treatment.
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Affiliation(s)
- Li Zhuang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China; Qingdao Special Food Research Institute, Qingdao 266109, Shandong, People's Republic of China
| | - Kexin Xu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China
| | - Yinglian Zhu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China; Qingdao Special Food Research Institute, Qingdao 266109, Shandong, People's Republic of China
| | - Fengwu Wang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China; Qingdao Special Food Research Institute, Qingdao 266109, Shandong, People's Republic of China
| | - Junxia Xiao
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China; Qingdao Special Food Research Institute, Qingdao 266109, Shandong, People's Republic of China.
| | - Liping Guo
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China; Qingdao Special Food Research Institute, Qingdao 266109, Shandong, People's Republic of China.
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14
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Holmar J, Noels H, Böhm M, Bhargava S, Jankowski J, Orth-Alampour S. Development, establishment and validation of in vitro and ex vivo assays of vascular calcification. Biochem Biophys Res Commun 2020; 530:462-470. [PMID: 32560961 DOI: 10.1016/j.bbrc.2020.05.085] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 05/12/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Vascular calcification (VC) is one major complication in patients with chronic kidney disease, with a misbalance in calcium and phosphate metabolism playing crucial role. The mechanisms underlying VC have not been entirely revealed to date. As studies aiming at the identification and characterization of the involved mediators are highly relevant, we developed a standardized operating protocol for in vitro and ex vivo approaches in this study to aiming at the comparability of these studies. APPROACH AND RESULTS We analyzed in vitro and ex vivo experimental conditions to study VC. Therefore, vascular smooth muscle cells were used for in vitro experiments and rat aorta for ex vivo experiments. The degree of calcification was estimated by quantification of calcium concentrations and by von Kossa staining. As a result, a step-by-step protocol for performing experiments on VC was established. We were able to demonstrate that the degree and the location of VC in vascular smooth muscle cells and aortic rings was highly dependent on the phosphate and CaCl2 concentration in the medium as well as the incubation time. Furthermore, the VC was reduced upon increasing fetal calf serum concentration in the medium. CONCLUSION In the current study, we developed and validated a standardized operating protocol for systematic in vitro and ex vivo analyses of medial calcification, which is essential for the comparability of the results of future studies.
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Affiliation(s)
- Jana Holmar
- Institute for Molecular Cardiovascular Research (IMCAR), RWTH Aachen University, University Hospital, Aachen, Germany
| | - Heidi Noels
- Institute for Molecular Cardiovascular Research (IMCAR), RWTH Aachen University, University Hospital, Aachen, Germany
| | - Michael Böhm
- Klinik für Innere Medizin III, University Hospital of Saarland, Saarland University, Homburg, Germany
| | - Shruti Bhargava
- Institute for Molecular Cardiovascular Research (IMCAR), RWTH Aachen University, University Hospital, Aachen, Germany
| | - Joachim Jankowski
- Institute for Molecular Cardiovascular Research (IMCAR), RWTH Aachen University, University Hospital, Aachen, Germany; School for Cardiovascular Diseases, Maastricht University, Maastricht, the Netherlands.
| | - Setareh Orth-Alampour
- Institute for Molecular Cardiovascular Research (IMCAR), RWTH Aachen University, University Hospital, Aachen, Germany
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Sim U, Sung J, Lee H, Heo H, Jeong HS, Lee J. Effect of calcium chloride and sucrose on the composition of bioactive compounds and antioxidant activities in buckwheat sprouts. Food Chem 2019; 312:126075. [PMID: 31893551 DOI: 10.1016/j.foodchem.2019.126075] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 12/13/2019] [Accepted: 12/17/2019] [Indexed: 02/07/2023]
Abstract
In this study, we evaluated the effect of sucrose and CaCl2 on the growth profile, nutritional quality, and antioxidant capacity of sprouted buckwheat. Buckwheat seeds were germinated at 25 °C for 8 days and sprayed with four different solutions: distilled water, 3% sucrose, 7.5 mM CaCl2, and 3% sucrose plus 7.5 mM CaCl2. Our results showed that CaCl2 effectively improved sucrose-elicitation induced growth reduction in buckwheat sprouts. Elicitation with both sucrose and CaCl2 in buckwheat sprouts markedly enhanced the accumulation of bioactive compounds, such as polyphenols, flavonoids, γ-aminobutyric acid, vitamin C, and E, without negatively affecting sprout growth. Elicitation with both sucrose and CaCl2 not only significantly enhanced the antioxidant activities but also exerted cytoprotective effects against oxidative damage in HepG2 cells and fibroblasts. These findings suggested that simultaneous elicitation with 3% sucrose and 7.5 mM CaCl2 can potentially improve the nutritional value and potential health benefits of buckwheat sprouts.
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Affiliation(s)
- Ung Sim
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk 28644, South Korea
| | - Jeehye Sung
- Department of Food Science and Biotechnology, Andong National University, Andong, Gyeongbuk 36729, South Korea
| | - Hana Lee
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk 28644, South Korea
| | - Huijin Heo
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk 28644, South Korea
| | - Heon Sang Jeong
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk 28644, South Korea
| | - Junsoo Lee
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk 28644, South Korea.
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16
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Li X, Sun Y, Pan D, Wang Y, Cao J. The effect of CaCl 2 marination on the tenderizing pathway of goose meat during conditioning. Food Res Int 2017; 102:487-92. [PMID: 29195976 DOI: 10.1016/j.foodres.2017.09.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/05/2017] [Accepted: 09/08/2017] [Indexed: 11/22/2022]
Abstract
In order to figure out the effect of CaCl2 on the tenderizing pathway of goose meat, breast muscles of thirty-two Eastern Zhejiang White Geese were divided into three treatments: the control, 150 and 300mM CaCl2. Shear force, myofibrillar fraction index (MFI), actin filaments and F-actin, G-actin and tropomodulins (Tmods) levels were investigated during 168h. Results showed that 300mM treatment had lower shear force at 48, 96 and 168h and higher MFI at 24, 48, 96 and 168h than the control. The rate of actin filaments disruption, the decrease of F-actin, the degradation of Tmods, the increase of G-actin in 300mM treatment was faster than 150mM treatment; the rate in the control was the slowest among treatments. CaCl2 accelerated the transformation of F-actin into G-actin. We concluded that CaCl2 tenderized goose meat by depolymerizing actin filaments and cleaving Tmods.
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17
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Sadeghi-Ataabadi M, Mostafavi-Pour Z, Vojdani Z, Sani M, Latifi M, Talaei-Khozani T. Fabrication and characterization of platelet-rich plasma scaffolds for tissue engineering applications. Mater Sci Eng C Mater Biol Appl 2016; 71:372-380. [PMID: 27987720 DOI: 10.1016/j.msec.2016.10.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 09/27/2016] [Accepted: 10/01/2016] [Indexed: 01/08/2023]
Abstract
Platelet-Rich Plasma (PRP), as a rich source of growth factor, can form a fibrin gel that recapitulates the extracellular matrix of the tissues. The aim of this study was to evaluate the effects of different concentrations of CaCl2 on the PRP scaffold structure which in turn could change the cell's behavior. PRP was mixed with 2.5, 5 and 10% (w/v) CaCl2. Then, the tensile strength, biodegradability and water content of the scaffolds were evaluated. We also performed immunostaining for assessment of the actin stress fiber orientation and SEM for detecting the cell phenotype and physical properties of the fibers. Cell viability, attachment and migration were also evaluated. The highest cell attachment and short term proliferation rate was observed on the scaffolds with 2.5% CaCl2. The cells cultured on the scaffold with higher CaCl2 concentration had fusiform phenotype with few cell processes and parallel arrangement of stress fibers while those cultured on the other scaffolds were fibroblast-like with more processes and net-like stress fibers. The scaffolds with 10% CaCl2 demonstrated the highest osmolarity (358.75±4.99mOsmole), fiber thickness (302.1±54.3nm), pore size (332.1±118.9nm2) and the longest clotting time (12.2±0.776min) compared with the other scaffolds. Water content, branching angle, porosity, orientation and tensile strength did not change by gelation with different CaCl2 concentrations. In conclusion, the cell shape, viability and proliferation were modified by culturing on the PRP scaffolds prepared with various concentrations of CaCl2, and as a result, the scaffolds showed different physical and biological properties.
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Affiliation(s)
- Mahmoud Sadeghi-Ataabadi
- Tissue engineering Lab, Anatomy department, Medical School, Shiraz University of Medical Sciences, Iran
| | - Zohreh Mostafavi-Pour
- Recombinant protein lab, Department of Biochemistry, Medical School, Shiraz University of Medical Sciences, Iran
| | - Zahra Vojdani
- Tissue engineering Lab, Anatomy department, Medical School, Shiraz University of Medical Sciences, Iran
| | - Mahsa Sani
- Tissue engineering Lab, Anatomy department, Medical School, Shiraz University of Medical Sciences, Iran
| | - Mona Latifi
- Tissue Engineering Department, National Institute of Genetic Engineering and Biotechnoloy, Iran; Tissue engineering Lab, Anatomy department, Medical School, Shiraz University of Medical Sciences, Iran
| | - Tahereh Talaei-Khozani
- Tissue engineering Lab, Anatomy department, Medical School, Shiraz University of Medical Sciences, Iran.
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Lauwers K, Breynaert E, Rombouts I, Delcour JA, Kirschhock CEA. Water electrolyte promoted oxidation of functional thiol groups. Food Chem 2016; 197 Pt B:1235-9. [PMID: 26675862 DOI: 10.1016/j.foodchem.2015.11.075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 11/12/2015] [Accepted: 11/13/2015] [Indexed: 10/22/2022]
Abstract
The formation of disulfide bonds is of the utmost importance for a wide range of food products with gluten or globular proteins as functional agents. Here, the impact of mineral electrolyte composition of aqueous solutions on thiol oxidation kinetics was studied, using glutathione (GSH) and cysteine (CYS) as model systems. Interestingly, the oxidation rate of both compounds into their corresponding disulfides was significantly higher in common tap water than in ultrapure water. The systematic study of different electrolyte components showed that especially CaCl2 improved the oxidation rate of GSH. However, this effect was not observed for CYS, which indicated a strong impact of the local chemical environment on thiol oxidation kinetics.
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Affiliation(s)
- K Lauwers
- KULeuven, Center for Surface Chemistry and Catalysis, Department of Microbial and Molecular Systems, Celestijnenlaan 200f, B-3001 Leuven, Belgium
| | - E Breynaert
- KULeuven, Center for Surface Chemistry and Catalysis, Department of Microbial and Molecular Systems, Celestijnenlaan 200f, B-3001 Leuven, Belgium.
| | - I Rombouts
- KULeuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001 Leuven, Belgium
| | - J A Delcour
- KULeuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001 Leuven, Belgium
| | - C E A Kirschhock
- KULeuven, Center for Surface Chemistry and Catalysis, Department of Microbial and Molecular Systems, Celestijnenlaan 200f, B-3001 Leuven, Belgium
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Mateus T, Santo D, Saúde C, Pires-Cabral P, Quintas C. The effect of NaCl reduction in the microbiological quality of cracked green table olives of the Maçanilha Algarvia cultivar. Int J Food Microbiol 2015; 218:57-65. [PMID: 26613162 DOI: 10.1016/j.ijfoodmicro.2015.11.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 10/23/2015] [Accepted: 11/14/2015] [Indexed: 12/20/2022]
Abstract
The present work aimed at studying the effect of the partial replacement of NaCl with KCl and CaCl2 of the fermenting brines on the microbiological quality of natural cracked green Maçanilha Algarvia table olives. Olives were fermented in different salt combinations (Brine 1-8% NaCl, Brine 2-4% NaCl 4% KCl, Brine 3-4% NaCl 4% CaCl2, Brine 4-4% KCl 4% CaCl2, and Brine 5-2.7% NaCl 2.7% KCl 2.7% CaCl2) and the abundance of yeasts and enterobacteria was determined. At the end of fermentation, the main microbial safety parameters were evaluated. Samples were analyzed according to standard methodologies and using Chromocult Agar (coliforms and Escherichia coli). The yeasts collected were grouped by restriction analysis of the ITS-5.8S rRNA gene and identified by partial sequencing of the 26S rRNA. Throughout the study, a decrease of the enterobacteria population was observed in all the fermentations, which was greater and faster in brines containing potassium and calcium. The main yeasts identified were Pichia membranaefaciens, Candida boidinii, Zygosaccharomyces mrakii, Priceomyces carsonii, Saccharomyces cerevisiae, Wickerhamomyces anomalus and the yeast-like fungus Galactomyces geotrichum. The highest yeast diversity was found in olives produced in Brines 1, 2 and 3 and the lowest in Brines 4 and 5, where only the species P. membranaefaciens, C. boidinii and G. geotrichum were identified. No Pseudomonas, E. coli, Salmonella, Staphylococcus aureus and Listeria monocytogenes were found in the table olives produced.
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Affiliation(s)
- Tânia Mateus
- Universidade do Algarve, Instituto Superior de Engenharia, Campus da Penha, 8005-139, Faro, Portugal; Universidade do Algarve, Centre for Mediterranean Bioresources and Food (MeditBio) Campus de Gambelas, 8005-139, Faro, Portugal
| | - David Santo
- Universidade do Algarve, Instituto Superior de Engenharia, Campus da Penha, 8005-139, Faro, Portugal; Universidade do Algarve, Centre for Mediterranean Bioresources and Food (MeditBio) Campus de Gambelas, 8005-139, Faro, Portugal
| | - Cíntia Saúde
- Universidade do Algarve, Instituto Superior de Engenharia, Campus da Penha, 8005-139, Faro, Portugal; Universidade do Algarve, Centre for Mediterranean Bioresources and Food (MeditBio) Campus de Gambelas, 8005-139, Faro, Portugal
| | - Paula Pires-Cabral
- Universidade do Algarve, Instituto Superior de Engenharia, Campus da Penha, 8005-139, Faro, Portugal; Universidade do Algarve, Centre for Mediterranean Bioresources and Food (MeditBio) Campus de Gambelas, 8005-139, Faro, Portugal
| | - Célia Quintas
- Universidade do Algarve, Instituto Superior de Engenharia, Campus da Penha, 8005-139, Faro, Portugal; Universidade do Algarve, Centre for Mediterranean Bioresources and Food (MeditBio) Campus de Gambelas, 8005-139, Faro, Portugal.
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Boshoff M, De Jonge M, Scheifler R, Bervoets L. Predicting As, Cd, Cu, Pb and Zn levels in grasses (Agrostis sp. and Poa sp.) and stinging nettle (Urtica dioica) applying soil-plant transfer models. Sci Total Environ 2014; 493:862-871. [PMID: 25000582 DOI: 10.1016/j.scitotenv.2014.06.076] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/29/2014] [Accepted: 06/17/2014] [Indexed: 06/03/2023]
Abstract
The aim of this study was to derive regression-based soil-plant models to predict and compare metal(loid) (i.e. As, Cd, Cu, Pb and Zn) concentrations in plants (grass Agrostis sp./Poa sp. and nettle Urtica dioica L.) among sites with a wide range of metal pollution and a wide variation in soil properties. Regression models were based on the pseudo total (aqua-regia) and exchangeable (0.01 M CaCl2) soil metal concentrations. Plant metal concentrations were best explained by the pseudo total soil metal concentrations in combination with soil properties. The most important soil property that influenced U. dioica metal concentrations was the clay content, while for grass organic matter (OM) and pH affected the As (OM) and Cu and Zn (pH). In this study multiple linear regression models proved functional in predicting metal accumulation in plants on a regional scale. With the proposed models based on the pseudo total metal concentration, the percentage of variation explained for the metals As, Cd, Cu, Pb and Zn were 0.56%, 0.47%, 0.59%, 0.61%, 0.30% in nettle and 0.46%, 0.38%, 0.27%, 0.50%, 0.28% in grass.
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Affiliation(s)
- Magdalena Boshoff
- Laboratory of Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium.
| | - Maarten De Jonge
- Laboratory of Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Renaud Scheifler
- Chrono-Environment, UMR 6249 University of Franche-Comté/CNRS Usc INRA, Place Leclerc, F-25030 Besançon Cedex, France
| | - Lieven Bervoets
- Laboratory of Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
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Torres B, Ruoho AE. N-terminus regulation of VMAT2 mediates methamphetamine-stimulated efflux. Neuroscience 2013; 259:194-202. [PMID: 24321511 DOI: 10.1016/j.neuroscience.2013.11.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 10/28/2013] [Accepted: 11/28/2013] [Indexed: 10/25/2022]
Abstract
The 20 amino acid (AA) N-terminus of the vesicular monoamine transporter 2 (VMAT2) was examined as a regulator of VMAT2 function. Removal of the first 16 or 19 AAs of the N-terminus resulted in a molecule with reduced ability to sequester [(3)H]-5HT. A glutathione-S-transferase-construct of the N-terminus underwent phosphorylation in the presence of PKC at serines 15 and 18. These putative phosphorylation sites were examined for effects on function. Phospho-mimetic substitution of serines 15 and 18 with aspartate in the full-length VMAT2 resulted in reduced [(3)H]-5HT sequestration and reduced methamphetamine (METH)-stimulated efflux of preloaded [(3)H]-5HT. In contrast, mutation of serines 15 and 18 to alanines maintained intact net substrate sequestration but eliminated METH-stimulated efflux of pre-accumulated [(3)H]-5HT. In summary, these data suggest a model in which the VMAT2 N-terminus regulates monoamine sequestration.
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Affiliation(s)
- B Torres
- University of Wisconsin, Madison, Department of Neuroscience, 1300 University Avenue, Madison, WI 53706, USA
| | - A E Ruoho
- University of Wisconsin, Madison, Department of Neuroscience, 1300 University Avenue, Madison, WI 53706, USA.
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Cheng TS, Hung MJ, Cheng YI, Cheng LJ. Calcium-induced proline accumulation contributes to amelioration of NaCl injury and expression of glutamine synthetase in greater duckweed (Spirodela polyrhiza L.). Aquat Toxicol 2013; 144-145:265-274. [PMID: 24200992 DOI: 10.1016/j.aquatox.2013.10.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 10/07/2013] [Accepted: 10/12/2013] [Indexed: 06/02/2023]
Abstract
The calcium-mediated proline accumulation is a critical response under NaCl stress and the function of the induced proline as a glutamine synthetase (GS) protectant in greater duckweed was investigated. The plants were treated with solutions containing 100mM NaCl, 200 mM NaCl, 200 mM NaCl plus 10mM CaCl2, or 10mM CaCl2 alone for 4 days. At the end of the experiment, the fronds of inoculum treated with 200 mM NaCl showed the chlorotic effect, higher glutamate dehydrogenase (NADH-GDH) activity and lower GS activity. At the lower salinity, the activities of GS and NADH-GDH were not altered markedly. A significant accumulation of proline was not found under either low or high salinity. The activity of Δ(1)-pyrroline-5-carboxylate reductase (P5CR) was enhanced only at 200 mM NaCl but remained unchanged at 100mM NaCl. The activity of Δ(1)-pyrroline-5-carboxylate synthetase (P5CS) did not change under salinity-stressed. Addition of CaCl2 to the salt stressed plants not only lowered NaCl injury but also showed an elevated level of proline contents in response to the salinity treatment. In addition, both GS activity and corresponding polypeptides were expressed close to the level of control. Exogenous proline protects GS2 and the 32 kDa protein in photosystem II reaction center (D1) from H2O2-induced redox degradation in the chloroplast lysates of duckweed. The results suggest that calcium-induced proline accumulation may play an important role as a GS protectant under NaCl exposure in S. polyrhiza.
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Affiliation(s)
- Tai-Sheng Cheng
- Department of Biological Sciences and Technology, National University of Tainan, Tainan 70005, Taiwan, ROC
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Moore K, Bryant ZJ, Ghatnekar G, Singh UP, Gourdie RG, Potts JD. A synthetic connexin 43 mimetic peptide augments corneal wound healing. Exp Eye Res 2013; 115:178-88. [PMID: 23876491 DOI: 10.1016/j.exer.2013.07.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 06/24/2013] [Accepted: 07/01/2013] [Indexed: 01/23/2023]
Abstract
The ability to safely and quickly close wounds and lacerations is an area of need in regenerative medicine, with implications toward healing a wide range of tissues and wounds. Using an in vivo corneal injury model, our study applied a newly developed peptide capable of promotion of wound healing and epithelial regeneration. The alpha-carboxy terminus 1 (αCT1) peptide is a 25 amino acid peptide from the C-terminus of connexin 43 (Cx43), modified to promote cellular uptake. Previous studies applying αCT1 to excisional skin wounds in porcine models produced tissues having an overall reduced level of scar tissue and decreased healing time. Rapid metabolism of αCT1 in previous work led to the investigation of extended release on wound healing rate used in this study. Here we delivered αCT1 both directly, in a concentrated pluronic solution, and in a sustained system, using polymeric alginate-poly-l-ornithine (A-PLO) microcapsules. Cell toxicity analysis showed minimal cell-loss with microcapsule treatment. Measurement of wound healing using histology and fluorescence microscopy indicated significant reduction in healing time of αCT1 microcapsule treated rat corneas compared with controls (88% vs. 38%). RT-PCR analysis showed an initial up regulation followed by down regulation of the gene keratin-19 (Krt19). Zonula occludens 1 (ZO-1) showed an opposite down regulation followed by an up regulation whereas Cx43 showed a biphasic response. Inflammatory indexes demonstrated a reduction in the inflammation of corneas treated with αCT1 microcapsules when compared with pluronic gel vehicle. These results suggest αCT1, when applied in a sustained release system, acts as a beneficial wound healing treatment.
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