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Gu H, Liu S, Liang K, Xia Z, Zhang G, Li B, Liu S. Design and Synthesis of Dimethylaminomethyl-Substituted Curcumin Derivatives: Potent Anti-Inflammatory, Anti-Oxidant, and Radioprotection Activity, Improved Aqueous Solubility Compared with Curcumin. Molecules 2024; 29:1985. [PMID: 38731476 PMCID: PMC11085442 DOI: 10.3390/molecules29091985] [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: 04/01/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
Although the wide variety of bioactivities of curcumin has been reported by researchers, the clinical application of curcumin is still limited due to its poor aqueous solubility. In view of this, a series of dimethylaminomethyl-substituted curcumin derivatives were designed and synthesized (compounds 1-15). Acetate of these derivatives were prepared (compounds 1a-15a). The Mannich reaction and aldol condensation reaction are the main reactions involved in this study. Compounds 6, 10, 12, 3a, 5a, 6a, 7a, 8a, 10a, 11a, 12a, 13a, 14a, and 15a exhibited better in vitro anti-inflammatory activity compared to curcumin in the RAW264.7 cell line. Compounds 5, 1a, 5a, 8a, and 12a exhibited better in vitro antioxidant activity compared to curcumin in the PC 12 cell line. Compounds 11, 13, 5a, 7a, and 13a exhibited better in vitro radiation protection compared to curcumin in the PC 12 cell line. The aqueous solubilities of all the curcumin derivative acetates were greatly improved compared to curcumin.
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Affiliation(s)
- Huiling Gu
- School of Pharmacy, Henan University, Kaifeng 475001, China;
- Department of Pharmaceutical Science, Beijing Institute of Radiation Medicine, Beijing 100850, China; (S.L.); (K.L.); (Z.X.); (G.Z.)
| | - Sifan Liu
- Department of Pharmaceutical Science, Beijing Institute of Radiation Medicine, Beijing 100850, China; (S.L.); (K.L.); (Z.X.); (G.Z.)
| | - Kai Liang
- Department of Pharmaceutical Science, Beijing Institute of Radiation Medicine, Beijing 100850, China; (S.L.); (K.L.); (Z.X.); (G.Z.)
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Ziming Xia
- Department of Pharmaceutical Science, Beijing Institute of Radiation Medicine, Beijing 100850, China; (S.L.); (K.L.); (Z.X.); (G.Z.)
| | - Guangjie Zhang
- Department of Pharmaceutical Science, Beijing Institute of Radiation Medicine, Beijing 100850, China; (S.L.); (K.L.); (Z.X.); (G.Z.)
| | - Bin Li
- Department of Pharmaceutical Science, Beijing Institute of Radiation Medicine, Beijing 100850, China; (S.L.); (K.L.); (Z.X.); (G.Z.)
| | - Shuchen Liu
- Department of Pharmaceutical Science, Beijing Institute of Radiation Medicine, Beijing 100850, China; (S.L.); (K.L.); (Z.X.); (G.Z.)
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Xu Y, He C, Zhou Z. Modulating the texture of heat-set gels of phosphorylated walnut protein isolates through Glucono-δ-lactone acidification. Food Chem 2024; 437:137734. [PMID: 37871422 DOI: 10.1016/j.foodchem.2023.137734] [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: 07/15/2023] [Revised: 09/15/2023] [Accepted: 10/09/2023] [Indexed: 10/25/2023]
Abstract
The gelation of walnut protein isolates has not been extensively studied, mainly due to their inherent poor dispersity. This study investigated the gelation of alkaline-extracted walnut protein isolates (AWPI) and phosphorylated walnut protein isolates (PWPI) induced by heat treatment with glucono-δ-lactone (GDL) acidification, focusing on the impact of GDL concentrations on microstructure, rheology, and texture of the resulting gels. The PWPI gel exhibited lower hardness but a smoother structure than the AWPI gel. Notably, acidification with GDL (0.6-1.2%) significantly increased the stiffness of PWPI gels, increasing storage modulus and yield stress 10-50 times, while weakening AWPI gels. Varying concentrations of GDL effectively modulated the microstructure of the PWPI gels, leading to the altered texture (from a soft-solid state to a well-self-supporting stiff-solid gel) and water holding capacity (from approximately 46% to 85%). Additionally, hydrophobic interactions and disulfide bonds were identified as the primary forces involved in the gels.
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Affiliation(s)
- Yanfei Xu
- School of Food Science and Bioengineering, Xihua University, Chengdu, Sichuan Province 610039, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China
| | - Changwei He
- School of Food Science and Bioengineering, Xihua University, Chengdu, Sichuan Province 610039, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China
| | - Zheng Zhou
- School of Food Science and Bioengineering, Xihua University, Chengdu, Sichuan Province 610039, China; Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China.
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Liu H, Wang Z, Xu J, Ji F, Luo S, Zhong X, Zhao Y, Zheng Z. Self-assembled pea vicilin nanoparticles as nanocarriers for improving the antioxidant activity, environmental stability and sustained-release property of curcumin. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:2467-2476. [PMID: 37986244 DOI: 10.1002/jsfa.13132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/22/2023] [Accepted: 11/13/2023] [Indexed: 11/22/2023]
Abstract
BACKGROUND The application of curcumin (Cur) in the food industry is usually limited by its low water solubility and poor stability. This study aimed to fabricate self-assembled nanoparticles using pea vicilin (7S) through a pH-shifting method (pH 7-pH 12-pH 7) to develop water-soluble nanocarriers of Cur. RESULTS Intrinsic fluorescence, far-UV circular dichroism spectra and transmission electron microscopy analysis demonstrated that the structure of 7S could be unfolded at pH 12.0 and refolded when the pH shifted to 7.0. The assembled 7S-Cur exhibited a high loading ability of 81.63 μg mg-1 for Cur and homogeneous particle distribution. Cur was encapsulated in the 7S hydrophobic nucleus in an amorphous form and combined through hydrophobic interactions and hydrogen bonding, resulting in the static fluorescence quenching of 7S. Compared with free Cur, the retention rates of Cur in 7S-Cur were approximately 1.12 and 1.70 times higher under UV exposure at 365 nm or heating at 75 °C for 120 min, respectively, as well as 7S-Cur showing approximately 1.50 times higher antioxidant activity. During simulated gastrointestinal experiments, 7S-Cur exhibited a better sustained-release property than free Cur. CONCLUSION The self-assembled 7S nanocarriers prepared using a pH-shifting method effectively improved the antioxidant activity, environmental stability and sustained-release property of Cur. Therefore, 7S isolated from pea protein could be used as potential nanocarriers for Cur. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Huihui Liu
- School of Food and Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei, China
| | - Zijun Wang
- School of Food and Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei, China
| | - Jingjing Xu
- School of Food and Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei, China
| | - Fuyun Ji
- School of Food and Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei, China
| | - Shuizhong Luo
- School of Food and Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei, China
| | - Xiyang Zhong
- School of Food and Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei, China
| | - Yanyan Zhao
- School of Food and Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei, China
| | - Zhi Zheng
- School of Food and Biological Engineering, Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei, China
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Si H, Yan W, Jun S, Hongyu M, Xia Z, Kuan W, Cunchao Z. Modulation of cecal microbiota and fecal metabolism in mice by walnut protein. Food Funct 2024; 15:1689-1704. [PMID: 38251959 DOI: 10.1039/d3fo04403c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Walnut meal is a by-product of walnut oil pressing, in which the protein content is more than 40%, which is an excellent food raw material, but at present, it is basically used as animal feed or discarded, which results in a great waste of resources, and its modulating effect on the intestinal microbiota is not clear. In this study, we used supercritically extracted walnut meal as a raw material, prepared walnut meal isolate protein (WP) by alkaline extraction and acid precipitation, and systematically analyzed its structure by Fourier infrared spectroscopy (FTIR), Raman spectroscopy (Raman), and scanning electron microscopy (SEM); meanwhile, we explored the effects of WP on the cecal bacterial flora and fecal metabolites of mice by microbiological and metabolomic techniques. The results showed that the protein content of WP prepared using alkaline extraction and acid precipitation was as high as 83.7%, in which arginine and glutamic acid were abundant, and it has the potential to be used as a raw material for weight-loss meal replacement food; FTIR and Raman analyses showed that the absorption peaks of WP's characteristic functional groups were obvious, and that the content of the α-helix and β-fold in the secondary structure was greater than 30%, which indicated that it was structurally stable; differential scanning calorimetry (DSC) and SEM analyses showed that WP is a typical spherical particle, its denaturation temperature is 73.6 °C, and it has good thermal stability. Supplementation of WP significantly altered the composition of the intestinal flora in mice, with an increase in beneficial bacteria and a decrease in harmful bacteria; the strongest modulation of the intestinal flora was achieved by altering the composition of the intestinal flora and by increasing the number of Akkermansia (p < 0.01), which consequently affects the function of the microbiota. Based on LC-MS metabolomic results, we identified a total of 87 WP-regulated metabolites, mainly enriched in the bile secretion pathway, which had the highest relevance, followed by benzoxazine biosynthesis. In summary, walnut protein is an important plant protein and has a positive impact on intestinal health, which may provide new ideas for the development of functional foods.
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Affiliation(s)
- Huang Si
- Yunnan Agricultural University, China.
| | - Wang Yan
- Yunnan Agricultural University, China.
| | - Sheng Jun
- Yunnan Agricultural University, China.
- Yunnan Province Characteristic Resources Food Biofabrication Engineering Research Center, China.
| | - Mu Hongyu
- Yunnan Agricultural University, China.
| | - Zhang Xia
- Yunnan Agricultural University, China.
| | - Wu Kuan
- Yunnan Agricultural University, China.
| | - Zhao Cunchao
- Yunnan Agricultural University, China.
- Yunnan Plateau Characteristic Agricultural Industry Research Institute, China.
- Yunnan Province Characteristic Resources Food Biofabrication Engineering Research Center, China.
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Zhang ZH, Zhang GY, Huang JR, Ge AY, Zhou DY, Tang Y, Xu XB, Song L. Microfluidized hemp protein isolate: an effective stabilizer for high-internal-phase emulsions with improved oxidative stability. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:1668-1678. [PMID: 37847204 DOI: 10.1002/jsfa.13050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 10/10/2023] [Accepted: 10/17/2023] [Indexed: 10/18/2023]
Abstract
BACKGROUND Hemp protein isolates (HPIs), which provide a well-balanced profile of essential amino acids comparable to other high-quality proteins, have recently garnered significant attention. However, the underutilized functional attributes of HPIs have constrained their potential commercial applications within the food and agriculture field. This study advocates the utilization of dynamic-high-pressure-microfluidization (DHPM) for the production of stable high-internal-phase emulsions (HIPEs), offering an efficient approach to fully exploit the potential of HPI resources. RESULTS The findings underscore the effectiveness of DHPM in producing HPI as a stabilizing agent for HIPEs with augmented antioxidant activity. Microfluidized HPI exhibited consistent adsorption and anchoring at the oil-water interface, resulting in the formation of a dense and compact layer. Concurrently, the compression of droplets within HIPEs gave rise to a polyhedral framework, conferring viscoelastic properties and a quasi-solid behavior to the emulsion. Remarkably, HIPEs stabilized by microfluidized HPI demonstrated superior oxidative and storage stability, attributable to the establishment of an antioxidative barrier by microfluidized HPI particles. CONCLUSION This study presents an appealing approach for transforming liquid oils into solid-like fats using HPI particles, all without the need for surfactants. HIPEs stabilized by microfluidized HPI particles hold promise as emerging food ingredients for the development of emulsion-based formulations with enhanced oxidative stability, thereby finding application in the food and agricultural industries. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Zhi-Hui Zhang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
| | - Guang-Yao Zhang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
| | - Jia-Rong Huang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
| | - Ai-Yuan Ge
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
| | - Da-Yong Zhou
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
- National Engineering Research Center of Seafood, Dalian, P. R. China
| | - Yue Tang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
- National Engineering Research Center of Seafood, Dalian, P. R. China
| | - Xian-Bing Xu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
- National Engineering Research Center of Seafood, Dalian, P. R. China
| | - Liang Song
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
- National Engineering Research Center of Seafood, Dalian, P. R. China
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Lv J, Zhou X, Wang W, Cheng Y, Wang F. Solubilization mechanism of self-assembled walnut protein nanoparticles and curcumin encapsulation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:4908-4918. [PMID: 36929026 DOI: 10.1002/jsfa.12559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/20/2023] [Accepted: 03/16/2023] [Indexed: 06/08/2023]
Abstract
BACKGROUND Native walnut protein is an alkali-soluble protein that seriously limits the application of walnut protein. The pH-shifting method could improve the solubility of walnut proteins and enable the encapsulation of active ingredients. The present study aimed to prepare water-soluble nanoparticles of curcumin using walnut protein and evaluate the process of walnut protein self-assembly, interaction between walnut protein and curcumin, encapsulation properties, and stability of nanoparticles. RESULTS The solubility of native walnut protein was poor, but the solubility of walnut protein nanoparticles (WPNP) formed by walnut protein after pH-shifting significantly improved to 91.5 ± 1.2%. This is because, during the process of pH changing from 7 to 12 and back to 7, walnut protein first unfolded under alkaline conditions and then refolded under pH drive, finally forming an internal hydrophobic and external hydrophilic shell-core structures. The quenching type of walnut protein and curcumin was static quenching, and the quenching constant was 2.0 × 1014 mol-1 L-1 s-1 , indicating that the interaction between walnut protein and curcumin was non-covalent. Adding curcumin resulted in the formation of nanoparticles with small particle size compared with the no-load. The loading capacity of curcumin-loaded walnut protein nanoparticles (WPNP-C) was 222 mg g-1 walnut protein isolate. Under the same mass, the curcumin equivalent concentration in aqueous solution of WPNP-C was 17 000 times higher than that of the native curcumin. CONCLUSION The solubility of the self-assembled WPNP significantly increased after pH-shifting treatment. The walnut protein carrier could improve the stability of the encapsulated curcumin. Therefore, walnut proteins could be used as water-soluble carriers for hydrophobic drugs. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Jiao Lv
- Department of Food Science and Engineering, College of Biological Sciences and Biotechnology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, China
- Department of Science and Engineering, Hebei Agricultural University, Cangzhou, China
| | - Xin Zhou
- Department of Food Science and Engineering, College of Biological Sciences and Biotechnology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, China
| | - Wenjie Wang
- Department of Food Science and Engineering, College of Biological Sciences and Biotechnology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, China
| | - Yifan Cheng
- Department of Food Science and Engineering, College of Biological Sciences and Biotechnology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, China
| | - Fengjun Wang
- Department of Food Science and Engineering, College of Biological Sciences and Biotechnology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, China
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Wen C, Zhang Z, Cao L, Liu G, Liang L, Liu X, Zhang J, Li Y, Yang X, Li S, Ren J, Xu X. Walnut Protein: A Rising Source of High-Quality Protein and Its Updated Comprehensive Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37399339 DOI: 10.1021/acs.jafc.3c01620] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Recently, plant protein as a necessary nutrient source for human beings, a common ingredient of traditional processed food, and an important element of new functional food has gained prominence due to the increasing demand for healthy food. Walnut protein (WP) is obtained from walnut kernels and walnut oil-pressing waste and has better nutritional, functional, and essential amino acids in comparison with other vegetable and grain proteins. WP can be conveniently obtained by various extraction techniques, including alkali-soluble acid precipitation, salting-out, and ultrasonic-assisted extraction, among others. The functional properties of WP can be modified for desired purposes by using some novel methods, including free radical oxidation, enzymatic modification, high hydrostatic pressure, etc. Moreover, walnut peptides play an important biological role both in vitro and in vivo. The main activities of the walnut peptides are antihypertensive, antioxidant, learning improvement, and anticancer, among others. Furthermore, WP could be applied in the development of functional foods or dietary supplements, such as delivery systems and food additives, among others. This review summarizes recent knowledge on the nutritional, functional, and bioactive peptide aspects of WP and possible future products, providing a theoretical reference for the utilization and development of oil crop waste.
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Affiliation(s)
- Chaoting Wen
- College of Food Science and Engineering, Yangzhou University, Yang Zhou 225127, China
| | - Zhiyi Zhang
- College of Food Science and Engineering, Yangzhou University, Yang Zhou 225127, China
| | - Liyan Cao
- College of Food Science and Engineering, Yangzhou University, Yang Zhou 225127, China
| | - Guoyan Liu
- College of Food Science and Engineering, Yangzhou University, Yang Zhou 225127, China
| | - Li Liang
- College of Food Science and Engineering, Yangzhou University, Yang Zhou 225127, China
| | - Xiaofang Liu
- School of Tourism and Cuisine, Yangzhou University, Yangzhou 225127, China
| | - Jixian Zhang
- College of Food Science and Engineering, Yangzhou University, Yang Zhou 225127, China
| | - Youdong Li
- College of Food Science and Engineering, Yangzhou University, Yang Zhou 225127, China
| | - Xinquan Yang
- Dongguan Chuangwei Precision Nutrition and Health Innovation Center, Dong guan 523000, China
| | - Shugang Li
- Engineering Research Center of Bio-process, Ministry of Education/Key Laboratory for Agricultural Products Processing of Anhui Province/School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Jiaoyan Ren
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 51064, China
| | - Xin Xu
- College of Food Science and Engineering, Yangzhou University, Yang Zhou 225127, China
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