101
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Zhang Z, Yang Y, Tang X, Chen Y, You Y. Chemical forces study of heat-induced myofibrillar protein gel as affected by partial substitution of NaCl with KCl, MgCl2and CaCl2. CYTA - JOURNAL OF FOOD 2015. [DOI: 10.1080/19476337.2015.1091038] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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102
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Kadali R, Kadiyala G, Gurunathan J. Pre-clinical assessment of the effectiveness of modified polyvalent antivenom in the neutralization ofNaja najavenom toxicity. Biotechnol Appl Biochem 2015; 63:827-833. [DOI: 10.1002/bab.1428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 07/30/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Renu Kadali
- School of Bio Sciences and Technology; Vellore Institute of Technology; Vellore India
| | - Gopi Kadiyala
- School of Bio Sciences and Technology; Vellore Institute of Technology; Vellore India
| | - Jayaraman Gurunathan
- School of Bio Sciences and Technology; Vellore Institute of Technology; Vellore India
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103
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Design, optimization and in-vitro study of folic acid conjugated-chitosan functionalized PLGA nanoparticle for delivery of bicalutamide in prostate cancer. POWDER TECHNOL 2015. [DOI: 10.1016/j.powtec.2015.04.053] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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104
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He W, Yang K, Fan L, Lv Y, Jin Z, Zhu S, Qin C, Wang Y, Yin L. Denatured globular protein and bile salt-coated nanoparticles for poorly water-soluble drugs: Penetration across the intestinal epithelial barrier into the circulation system and enhanced oral bioavailability. Int J Pharm 2015; 495:9-18. [PMID: 26325310 DOI: 10.1016/j.ijpharm.2015.08.086] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 08/19/2015] [Accepted: 08/26/2015] [Indexed: 12/28/2022]
Abstract
Oral drug delivery is the most preferred route for patients; however, the low solubility of drugs and the resultant poor absorption compromise the benefits of oral administration. On the other hand, for years, the overwhelmingly accepted mechanism for enhanced oral absorption using lipid nanocarriers was based on the process of lipid digestion and drug solubilization in the small intestine. Few reports indicated that other bypass pathways are involved in drug absorption in the gastrointestinal tract (GIT) for oral delivery of nanocarriers. Herein, we report a new nanoemulsion system with a denatured globular protein with a diameter of 30 nm, soybean protein isolates (SPI), and bile salt as emulsifiers, aiming to enhance the absorption of insoluble drugs and explore other pathways for absorption. A BCS class II drug, fenofibrate (FB), was used as the model drug. The SPI and bile salt-coated Ns with a diameter of approximately 150 nm were prepared via a high-pressure homogenizing procedure. Interestingly, the present Ns could be converted to solid dosage form using fluid-bed coating technology, maintaining a nanoscale size. Most importantly, in a model of in situ rat intestinal perfusion, Ns could penetrate across the intestinal epithelial barrier into the systemic circulation and then obtain biodistribution into other tissues. In addition, Ns significantly improved FB oral absorption, exhibited as a greater than 2- and 2.5-fold increase in Cmax and AUC0-t, respectively, compared to the suspension formulation. Overall, the present Ns are promising nanocarriers for the oral delivery of insoluble drugs, and the penetration of intact Ns across the GIT barrier into systemic circulation may be a new strategy for improved drug absorption with the use of nanocarriers.
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Affiliation(s)
- Wei He
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Ke Yang
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Lifang Fan
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Aosaikang Pharmaceutical Co., Ltd., Nanjing 210009, PR China
| | - Yaqi Lv
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Zhu Jin
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Shumin Zhu
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Chao Qin
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Yiao Wang
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Lifang Yin
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China.
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105
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Guo H, Hong Z, Yi R. Core-Shell Collagen Peptide Chelated Calcium/Calcium Alginate Nanoparticles from Fish Scales for Calcium Supplementation. J Food Sci 2015; 80:N1595-601. [PMID: 25990921 DOI: 10.1111/1750-3841.12912] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Accepted: 04/20/2015] [Indexed: 11/29/2022]
Abstract
UNLABELLED We report simple methods for preparing collagen peptide chelated calcium (cpcc) and a novel cpcc-loaded nanoparticle from marine fish scales for calcium supplementation. Cpcc nanoparticles have an average diameter of approximately 150 nm and a calcium content of up to 130.4 g/kg. Calcium alginate was selected to encapsulate cpcc for the preparation of core-shell cpcc/calcium alginate nanoparticles. The core-shell nanoparticles were mainly 200 to 500 nm in diameter. The ratio of calcium to sulfur was approximately 1.6:1. In vivo experiments indicated both cpcc and core-shell cpcc were able to improve calcium absorption and prevent calcium deficiency. Especially core-shell cpcc worked well to increase femur bone mineral density and femur calcium content in rats significantly. The study demonstrated that cpcc and core-shell cpcc nanoparticles were ideal for calcium supplementation. PRACTICAL APPLICATION Calcium deficiency has become an increasingly relevant health concern in the food industry. There is an urgent need for new effective calcium supplements. This study consisted of preparing and characterizing alginate nanoparticles loaded with collagen peptide chelated calcium. These nanoparticles can enhance calcium absorption significantly and prevent calcium deficiency. The data presented in this study can aid the food industry in developing a new ideal calcium supplement.
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Affiliation(s)
- Honghui Guo
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Inst. of Oceanography, State Oceanic Administration, No.184 Daxue Road, Xiamen, Fujian Province, 361005, China
| | - Zhuan Hong
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Inst. of Oceanography, State Oceanic Administration, No.184 Daxue Road, Xiamen, Fujian Province, 361005, China
| | - Ruizao Yi
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Inst. of Oceanography, State Oceanic Administration, No.184 Daxue Road, Xiamen, Fujian Province, 361005, China
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106
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Li Y, Wu Z, He W, Qin C, Yao J, Zhou J, Yin L. Globular Protein-Coated Paclitaxel Nanosuspensions: Interaction Mechanism, Direct Cytosolic Delivery, and Significant Improvement in Pharmacokinetics. Mol Pharm 2015; 12:1485-500. [DOI: 10.1021/mp5008037] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yongji Li
- State Key Laboratory of Natural Medicines and ‡Department of Pharmaceutics, School
of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Zhannan Wu
- State Key Laboratory of Natural Medicines and ‡Department of Pharmaceutics, School
of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Wei He
- State Key Laboratory of Natural Medicines and ‡Department of Pharmaceutics, School
of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Chao Qin
- State Key Laboratory of Natural Medicines and ‡Department of Pharmaceutics, School
of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Jing Yao
- State Key Laboratory of Natural Medicines and ‡Department of Pharmaceutics, School
of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Jianping Zhou
- State Key Laboratory of Natural Medicines and ‡Department of Pharmaceutics, School
of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Lifang Yin
- State Key Laboratory of Natural Medicines and ‡Department of Pharmaceutics, School
of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
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107
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Teng Z, Xu R, Wang Q. Beta-lactoglobulin-based encapsulating systems as emerging bioavailability enhancers for nutraceuticals: a review. RSC Adv 2015. [DOI: 10.1039/c5ra01814e] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Encapsulating systems prepared with beta-lactoglobulin, the major component of whey protein, may serve as versatile bioavailability enhancers for poorly absorbed nutraceuticals.
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Affiliation(s)
- Zi Teng
- Department of Nutrition and Food Science
- University of Maryland
- College Park
- USA
| | - Ruoyang Xu
- Department of Nutrition and Food Science
- University of Maryland
- College Park
- USA
| | - Qin Wang
- Department of Nutrition and Food Science
- University of Maryland
- College Park
- USA
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108
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Zhang W, Waghmare PR, Chen L, Xu Z, Mitra SK. Interfacial rheological and wetting properties of deamidated barley proteins. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.06.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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109
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Wan ZL, Guo J, Yang XQ. Plant protein-based delivery systems for bioactive ingredients in foods. Food Funct 2015; 6:2876-89. [DOI: 10.1039/c5fo00050e] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The application of food-grade delivery systems for the encapsulation, protection and controlled release of bioactive food ingredients have recently gained increasing interest in the research fields of functional foods and pharmaceutics. The preparation and application of bifunctional particles provide a novel perspective for the design of plant protein-based delivery system.
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Affiliation(s)
- Zhi-Li Wan
- Research and Development Center of Food Proteins
- Department of Food Science and Technology
- South China University of Technology
- Guangzhou 510640
- People's Republic of China
| | - Jian Guo
- Research and Development Center of Food Proteins
- Department of Food Science and Technology
- South China University of Technology
- Guangzhou 510640
- People's Republic of China
| | - Xiao-Quan Yang
- Research and Development Center of Food Proteins
- Department of Food Science and Technology
- South China University of Technology
- Guangzhou 510640
- People's Republic of China
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110
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Farah Diba R, Yasni S, Yuliani S. NANOEMULSIFIKASI SPONTAN EKSTRAK JINTAN HITAM DAN KARAKTERISTIK PRODUK ENKAPSULASINYA [Spontaneous Nanoemulsification of Black Cumin Extract and the Characteristics of the Encapsulation Product]. JURNAL TEKNOLOGI DAN INDUSTRI PANGAN 2014. [DOI: 10.6066/jtip.2014.25.2.134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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111
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Intestinal uptake and transport of vitamin B12-loaded soy protein nanoparticles. Pharm Res 2014; 32:1288-303. [PMID: 25319101 DOI: 10.1007/s11095-014-1533-x] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 09/25/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Intestinal absorption of vitamin B12 (VB12) is a major challenge in combating pernicious anemia due to intrinsic factor (IF) deficiency. PURPOSE The aim of this study was to explore the feasibility of using soy protein isolates (SPI) nanoparticles to improve the intestinal transport and absorption of VB12. METHODS Three different sized VB12-loaded SPI nanoparticles were produced by modulating preparation conditions using a cold-gelation method. The intestinal uptake and transport mechanisms of SPI nanoparticles for VB12 delivery were investigated and related to particle size. RESULTS SPI nanoparticles were not cytotoxic to Caco-2 cells and were effectively internalized into the cytoplasm via multiple endocytosis pathways including clathrin- and/or caveolae-mediated endocytosis and macropinocytosis routes. VB12 transport across the Caco-2 cell monolayers was increased to 2-3 times after nanoencapsulation, which was dependent on particle size, in the increasing order of 30 > 100 > 180 nm. Using inhibitor block method, the transport of 30 and 100 nm SPI nanoparticles appeared to be clathrin-mediated transcytosis and macropinocytosis routes. The intestinal transport of VB12, assessed using rodent jejunum in Ussing chambers, was improved up to 4-fold after being encapsulated into 30 nm SPI nanoparticles. CONCLUSIONS The findings suggest that SPI nanoparticles could be a promising carrier to facilitate the oral delivery of VB12.
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112
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Chen N, Lin L, Sun W, Zhao M. Stable and pH-sensitive protein nanogels made by self-assembly of heat denatured soy protein. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:9553-61. [PMID: 25180907 DOI: 10.1021/jf502572d] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this study, we examined the possibility of preparing stable soy protein nanogels by simply heating homogeneous soy protein dispersion. The protein nanogels formed were characterized by z-average hydrodynamic diameter, polydispersity index, turbidity, ζ-potential, morphology, and their stability to pH and ionic strength change. Soy protein dispersion (1% w/v) was homogeneous around pH 5.9 where it had the lowest polydispersity index (∼0.1). Stable and spherical nanogels were formed by heating soy protein dispersion at pH 5.9 under 95 °C. They sustained constantly low polydispersity index (∼0.1) in the investigated pH range of 6.06-7.0 and 2.6-3.0. The nanogels were pH-sensitive and would swell with pH change. They were stable at 0-200 mM NaCl concentration. Denaturation of soy glycinin was the prerequisite for the formation of stable nanogels. Soy protein nanogels had a core-shell structure with basic polypeptides and β subunits interacting together as the hydrophobic core; and acid polypeptides, α', and α subunits locating outside the core as hydrophilic shell. The inner structure of soy protein nanogels was mainly stabilized by disulfide bonds cross-linked network and hydrophobic interaction. Soy protein nanogels made in this study would be useful as functional ingredients in biotechnological, pharmaceutical, and food industries.
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Affiliation(s)
- Nannan Chen
- College of Light Industry and Food Sciences, and ‡State Key Laboratory of Pulp and Paper Engineering, South China University of Technology , Guangzhou 510640, China
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113
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Impacts of pH and heating temperature on formation mechanisms and properties of thermally induced canola protein gels. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2014.03.011] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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114
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Formulation and characterisation of antibody-conjugated soy protein nanoparticles--implications for neutralisation of snake venom with improved efficiency. Appl Biochem Biotechnol 2014; 174:2557-70. [PMID: 25185504 DOI: 10.1007/s12010-014-1207-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 08/25/2014] [Indexed: 10/24/2022]
Abstract
The present study reports the formulation of soy protein nanoparticles and its conjugation to antivenom. The conditions for nanoparticle formation were optimised by considering particle size, count rate, stability and zeta potential. The smallest particle size of 70.9 ± 0.9 nm with a zeta potential of -28.0 ± 1.4 mV was obtained at pH 6.2, with NaOH 5.4 % and 28 μg/mg glutaraldehyde. The nanoparticle was conjugated with antisnake venom immunoglobulins (F(ab')2 fragments) using 1-ethyl-3-[3-dimethylaminopropyl]carbodiimide. TEM analysis indicated the increased size of particle to 600 nm after conjugation to antivenom. Further, in vitro studies indicated that conjugated antibodies inhibited the activity of protease, phospholipase and hyaluronidase enzymes of Bungarus caeruleus venom more efficiently than the free antivenom. This is the first report on the use of protein nanoparticles for conjugating snake venom antibodies and their implications for neutralising snake venom enzymes with increased efficiency.
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115
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Teng Z, Li Y, Wang Q. Insight into curcumin-loaded β-lactoglobulin nanoparticles: incorporation, particle disintegration, and releasing profiles. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:8837-47. [PMID: 25135071 DOI: 10.1021/jf503199g] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
This study aimed at developing protein nanoparticles with desirable loading efficiency (LE) and low cross-linker concentration. Using β-lactoglobulin (BLG) and curcumin as a model system, this work demonstrated that the LE could be improved by up to 157% by maintaining low antisolvent content before mild evaporation. Moreover, the optimal level of glutaraldehyde decreased by 50% as the curcumin/protein ratio increased, suggesting that toxic cross-linkers could be partly replaced with natural phenols such as curcumin. The BLG-curcumin nanoparticles showed average size of 164-214 nm, zeta potential of -42 mV, and LE of up to 11%. Interestingly, BLG nanoparticles demonstrated rapid disintegration and nutraceutical release in simulated gastric fluid (SGF) at pH 2, despite the known resistance of BLG against pepsin. However, they maintained integrity in SGF at pH 5. This phenomenon, followed by extensive degradation in simulated intestinal fluid, suggested the controlled-release property of BLG nanoparticles when administered orally.
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Affiliation(s)
- Zi Teng
- Department of Nutrition and Food Science, 0112 Skinner Building, University of Maryland , College Park, Maryland 20742, United States
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116
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Kudarha R, Dhas NL, Pandey A, Belgamwar VS, Ige PP. Box–Behnken study design for optimization of bicalutamide-loaded nanostructured lipid carrier: stability assessment. Pharm Dev Technol 2014; 20:608-18. [DOI: 10.3109/10837450.2014.908305] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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117
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Liu F, Tang CH. Emulsifying properties of soy protein nanoparticles: influence of the protein concentration and/or emulsification process. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:2644-54. [PMID: 24601531 DOI: 10.1021/jf405348k] [Citation(s) in RCA: 182] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The interfacial and emulsifying properties of soy protein isolate nanoparticles formed by combined treatments of heating and electrostatic screening, as affected by variation of the protein concentration (c) and emulsification process, were investigated. These nanoparticles (with a z-average diameter of 103 nm at c = 0.1%, w/v) tended to aggregate at higher c values, and their internal structure was mainly maintained by hydrophobic interactions and disulfide bondings. In general, increasing c progressively favored diffusion and/or adsorption at the interface and formation of finer emulsions; increasing the energy input level of emulsification improved the emulsification efficiency and extent of droplet flocculation, as well as the emulsion coalescence and creaming stability. The rheological and creaming behavior of these emulsions was predominately determined by the amount of proteins adsorbed at the interface. The results confirmed that these nanoparticles can formulate Pickering emulsions with properties tailored by selecting c and the emulsification process.
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Affiliation(s)
- Fu Liu
- Department of Food Science and Technology and ‡State Key Laboratory of Pulp and Paper Engineering, South China University of Technology , Guangzhou, 510640 Guangdong, People's Republic of China
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118
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Zhang J, Liu Y, Liu X, Li Y, Yin X, Subirade M, Zhou P, Liang L. The folic acid/β-casein complex: Characteristics and physicochemical implications. Food Res Int 2014. [DOI: 10.1016/j.foodres.2014.01.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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119
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Yang J, Zhou Y, Chen L. Elaboration and characterization of barley protein nanoparticles as an oral delivery system for lipophilic bioactive compounds. Food Funct 2014; 5:92-101. [DOI: 10.1039/c3fo60351b] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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120
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Oehlke K, Adamiuk M, Behsnilian D, Gräf V, Mayer-Miebach E, Walz E, Greiner R. Potential bioavailability enhancement of bioactive compounds using food-grade engineered nanomaterials: a review of the existing evidence. Food Funct 2014; 5:1341-59. [DOI: 10.1039/c3fo60067j] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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121
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Isolation of a calcium-binding peptide from tilapia scale protein hydrolysate and its calcium bioavailability in rats. J Funct Foods 2014. [DOI: 10.1016/j.jff.2013.12.001] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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122
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Grygorczyk A, Corredig M. Acid induced gelation of soymilk, comparison between gels prepared with lactic acid bacteria and glucono-δ-lactone. Food Chem 2013; 141:1716-21. [PMID: 23870883 DOI: 10.1016/j.foodchem.2013.03.096] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 03/24/2013] [Accepted: 03/25/2013] [Indexed: 11/23/2022]
Abstract
The objective of this work was to compare the gelation of soymilk particles induced by the acidification of a commercial starter culture with that resulting by addition of glucono-δ-lactone (GDL). Structure formation was followed using rheology, and the microstructure was observed by confocal microscopy. Acidification of lactic acid bacteria resulted in a higher gelation pH (pH 6.29±0.05) compared to that of a gel induced by GDL (pH 5.9±0.04). This difference was attributed to the longer time available for rearrangements of the soymilk particles in soymilk with starter cultures compared to the fast acidification by GDL. In spite of the earlier gelation pH, there were no observed differences in the final gel stiffness measured at pH 5.1, the value of tan δ, the frequency dependence and the linear viscoelastic range of the gels measured at the final pH. Microstructural observations also showed a similar protein network structure.
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Affiliation(s)
- A Grygorczyk
- Department of Food Science, University of Guelph, Guelph, Ontario, Canada N1K 2W5
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123
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Burns JM, Pennington PL, Sisco PN, Frey R, Kashiwada S, Fulton MH, Scott GI, Decho AW, Murphy CJ, Shaw TJ, Ferry JL. Surface charge controls the fate of Au nanorods in saline estuaries. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:12844-12851. [PMID: 24144224 DOI: 10.1021/es402880u] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This work reports the distribution of negatively charged, gold core nanoparticles in a model marine estuary as a function of time. A single dose of purified polystyrene sulfonate (PSS)-coated gold nanorods was added to a series of three replicate estuarine mesocosms to emulate an abrupt nanoparticle release event to a tidal creek of a Spartina -dominated estuary. The mesocosms contained several phases that were monitored: seawater, natural sediments, mature cordgrass, juvenile northern quahog clam, mud snails, and grass shrimp. Aqueous nanorod concentrations rose rapidly upon initial dosing and then fell to stable levels over the course of approximately 50 h, after which they remained stable for the remainder of the experiment (41 days total). The concentration of nanorods rose in all other phases during the initial phase of the experiment; however, some organisms demonstrated depuration over extended periods of time (100+ h) before removal from the dosed tanks. Clams and biofilm samples were also removed from the contaminated tanks post-exposure to monitor their depuration in pristine seawater. The highest net uptake of gold (mass normalized) occurred in the biofilm phase during the first 24 h, after which it was stable (to the 95% level of confidence) throughout the remainder of the exposure experiment. The results are compared against a previous study of positively charged nanoparticles of the same size to parameterize the role of surface charge in determining nanoparticle fate in complex aquatic environments.
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Affiliation(s)
- Justina M Burns
- Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States
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124
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Teng Z, Luo Y, Wang Q. Carboxymethyl chitosan–soy protein complex nanoparticles for the encapsulation and controlled release of vitamin D3. Food Chem 2013; 141:524-32. [DOI: 10.1016/j.foodchem.2013.03.043] [Citation(s) in RCA: 199] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 02/27/2013] [Accepted: 03/13/2013] [Indexed: 11/29/2022]
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125
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Teng Z, Li Y, Luo Y, Zhang B, Wang Q. Cationic β-Lactoglobulin Nanoparticles as a Bioavailability Enhancer: Protein Characterization and Particle Formation. Biomacromolecules 2013; 14:2848-56. [DOI: 10.1021/bm4006886] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Zi Teng
- Department
of Nutrition and
Food Science, University of Maryland, 0112
Skinner Building, College Park, Maryland 20742, United States
| | - Ying Li
- College of Light Industry and
Food Science, South China University of Technology, Tianhe District, Guangzhou, 510640, People’s Republic of
China
| | - Yangchao Luo
- Department
of Nutrition and
Food Science, University of Maryland, 0112
Skinner Building, College Park, Maryland 20742, United States
| | - Boce Zhang
- Department
of Nutrition and
Food Science, University of Maryland, 0112
Skinner Building, College Park, Maryland 20742, United States
| | - Qin Wang
- Department
of Nutrition and
Food Science, University of Maryland, 0112
Skinner Building, College Park, Maryland 20742, United States
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126
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Teng Z, Luo Y, Wang T, Zhang B, Wang Q. Development and application of nanoparticles synthesized with folic acid conjugated soy protein. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:2556-2564. [PMID: 23414105 DOI: 10.1021/jf4001567] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this study, soy protein isolate (SPI) was conjugated with folic acid (FA) to prepare nanoparticles for target-specific drug delivery. Successful conjugation was evidenced by UV spectrophotometry and primary amino group analysis. An increase in count rate by at least 142% was observed in FA-SPI nanoparticles compared to the nonconjugated ones, whereas the particle size was decreased upon FA conjugation. This was probably attributed to the substitution of positively charged lysine residues by the FA backbone. The ζ-potential ranged from -36 to -42 mV depending on the conjugation degree, indicating desirable dispersion stability. Curcumin as a model drug was encapsulated successfully into FA-SPI nanoparticles, evidenced by X-ray diffraction study. The highest encapsulation and loading efficiencies were around 92.7% and 5.4%, respectively, which were significantly higher (P < 0.05) than those with nonconjugated SPI nanoparticles. In addition, a faster and more complete release of curcumin was observed for FA-SPI nanoparticles in PBS/Tween 20 buffer. Cell culture study showed that conjugation of FA resulted in an increase in cellular uptake by at most 93% in Caco-2 cells. These results suggested that FA-SPI is a potential wall material for encapsulation and enhanced delivery of anticancer drugs.
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Affiliation(s)
- Zi Teng
- Department of Nutrition and Food Science, University of Maryland , 0112 Skinner Building, College Park, Maryland 20742, United States
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