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Quintriqueo-Cid A, Giménez B, Romero-Hasler P, Soto-Bustamante E, Lozano-Sánchez J, Robert P. Influence of the crystallinity on the physicochemical properties of spray-dried quercetin-inulin microparticles and their performance during in vitro digestion. Food Chem 2024; 434:137325. [PMID: 37696152 DOI: 10.1016/j.foodchem.2023.137325] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/10/2023] [Accepted: 08/28/2023] [Indexed: 09/13/2023]
Abstract
Encapsulation of quercetin (Q) with inulin (In) by spray-drying was performed applying a Box-Behnken design where the effect of the inlet air temperature, percentage of inulin crystallite dispersion and Q content were studied on the crystallinity index (CI). Three microparticle systems with CI between 2 % and 20 % (Q-In-2 %, Q-In-12 % and Q-In-20 %) were selected to study the CI effect on Q release during an in vitro digestion. The higher the CI of microparticles, the higher the encapsulation efficiency (76.4 %, Q-In-20 %). Surface quercetin was steadily released during the oral, gastric, and intestinal phases of the digestion. The CI of the microparticles did not influence the Q bioaccessibility values (23.1-29.7 %). The highest Q delivery occurred during the simulated colonic phase (44.4-66.4 %) due to the action of the inulinase. The controlled crystallization in spray-dried microparticles is a promising strategy for the designing of polyphenol-based microparticles with specific delivery properties.
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Affiliation(s)
- Alejandra Quintriqueo-Cid
- Departamento de Ciencia de los Alimentos y Tecnología Química, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Dr. Carlos Lorca Tobar 964, Independencia 81380494, Santiago, Chile; Department of Food Science and Nutrition, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja 1807, Granada, Spain.
| | - Begoña Giménez
- Departamento de Ciencia y Tecnología de los Alimentos, Facultad Tecnológica, Universidad de Santiago de Chile, Av. Victor Jara 3769, Estación Central 9170124, Santiago, Chile.
| | - Patricio Romero-Hasler
- Departamento de Ciencia de los Alimentos y Tecnología Química, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Dr. Carlos Lorca Tobar 964, Independencia 81380494, Santiago, Chile.
| | - Eduardo Soto-Bustamante
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Dr. Carlos Lorca Tobar 964, Independencia 81380494, Santiago, Chile.
| | - Jesús Lozano-Sánchez
- Department of Food Science and Nutrition, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja 1807, Granada, Spain.
| | - Paz Robert
- Departamento de Ciencia de los Alimentos y Tecnología Química, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Dr. Carlos Lorca Tobar 964, Independencia 81380494, Santiago, Chile.
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2
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de Marins AR, Ribeiro STC, de Oliveira MC, Cardozo Filho L, de Oliveira AJB, Gonçalves RAC, Gomes RG, Feihrmann AC. Effect of extraction methods on the chemical, structural, and rheological attributes of fructan derived from Arctium lappa L. roots. Carbohydr Polym 2024; 324:121525. [PMID: 37985103 DOI: 10.1016/j.carbpol.2023.121525] [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: 08/04/2023] [Revised: 10/11/2023] [Accepted: 10/22/2023] [Indexed: 11/22/2023]
Abstract
The focus of this study was the evaluation of how extraction techniques impact the chemical, structural, and rheological attributes of fructans extracted from Arctium lappa L. roots. Three distinct extraction procedures were used, utilizing water as solvent, infusion extraction conducted at ambient temperature (25 °C for 5 min), thermal extraction employing reflux (100 °C for 2 h), and ultrasound-assisted extraction (50 °C for 1.38 h with a 158 W output). Chemical characterization by Nuclear Magnetic Resonance (NMR) and colorimetric analyses revealed the obtaining of inulin-type fructans (yield 83 %). The degree of polymerization (DP) was found to be the lowest for ultrasound-assisted extraction (14.38), followed by the room-temperature (20.41) and thermal (21.14) extraction techniques. None of the extraction techniques appeared to modify the molecular structure of the isolated compounds. In X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses, distinct crystallization patterns were observed for the room-temperature and thermal extraction techniques, though all fractions consistently exhibited characteristic bands of inulin-type fructan. Rheological assessments indicated a viscoelastic nature of the fractions, with those extracted thermally demonstrating a greater viscosity. This study shows that the choice of extraction method can influence the structural characteristics of inulin-type fructans derived from the burdock root.
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Affiliation(s)
- Annecler Rech de Marins
- Postgraduate Program in Food Science, State University of Maringa, CEP: 87020-900 Maringa, PR, Brazil
| | - Susana Tavares Cotrim Ribeiro
- Department of Pharmacy, Graduate Program in Pharmaceutical Sciences, Biotechnology Laboratory of Natural and Synthetic Products (LABIPROS), State University of Maringa, CEP: 87020-900 Maringa, PR, Brazil
| | - Mariana Carla de Oliveira
- Department of Pharmacy, Graduate Program in Pharmaceutical Sciences, Biotechnology Laboratory of Natural and Synthetic Products (LABIPROS), State University of Maringa, CEP: 87020-900 Maringa, PR, Brazil
| | - Lucio Cardozo Filho
- Posgraduate Program in Chemistry Engineering, State University of Maringa, CEP: 87020-900 Maringa, PR, Brazil
| | - Arildo José Braz de Oliveira
- Department of Pharmacy, Graduate Program in Pharmaceutical Sciences, Biotechnology Laboratory of Natural and Synthetic Products (LABIPROS), State University of Maringa, CEP: 87020-900 Maringa, PR, Brazil
| | - Regina Aparecida Correia Gonçalves
- Department of Pharmacy, Graduate Program in Pharmaceutical Sciences, Biotechnology Laboratory of Natural and Synthetic Products (LABIPROS), State University of Maringa, CEP: 87020-900 Maringa, PR, Brazil
| | - Raquel Guttierres Gomes
- Posgraduate Program in Food Engineering, State University of Maringa, CEP: 87020-900 Maringa, PR, Brazil
| | - Andresa Carla Feihrmann
- Postgraduate Program in Food Science, State University of Maringa, CEP: 87020-900 Maringa, PR, Brazil; Posgraduate Program in Food Engineering, State University of Maringa, CEP: 87020-900 Maringa, PR, Brazil.
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Agarry IE, Ding D, Cai T, Wu Z, Huang P, Kan J, Chen K. Inulin-whey protein as efficient vehicle carrier system for chlorophyll: Optimization, characterization, and functional food application. J Food Sci 2023; 88:3445-3459. [PMID: 37458284 DOI: 10.1111/1750-3841.16703] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 05/31/2023] [Accepted: 06/25/2023] [Indexed: 08/05/2023]
Abstract
Natural chlorophylls mostly found in vegetables such as spinach (Spinacia oleracea) could be employed as a possible substitute for synthetic colorants because of their intense green properties. However, the stability of natural chlorophyll is a major challenge to its utilization in the food industry. In this study, spray drying as an encapsulation technique was used to improve the stability of natural chlorophyll. Box-Behnken design was utilized to optimize the spray drying conditions for chlorophyll. Optimum conditions were given as inlet temperature, 132°C; inulin-to-whey protein isolate ratio, 61%:39%; pump rate, 25%, resulting in 92.3% encapsulation efficiency, 69.4% solubility, and -13.5 mV zeta potential at a desirability level of 0.901. The particle size, Carr index, bulk and tapped density, polydispersity index, and color showed satisfactory results. Crystallinity, endothermic peak melting temperature, and the enthalpy of chlorophyll-loaded microcapsules increased when compared to the blank microcapsules suggesting decreased hygroscopicity and enhanced thermal stability. In addition, the suitability of fabricated microcapsules using yogurt as a food model was assessed. Yogurt incorporated with chlorophyll-loaded microcapsules showed no significant pH modification with better apparent viscosity than control and sodium copper chlorophyllin (SCC) yogurt after 9 days of refrigerated storage. Based on the studied responses, the spray drying process could be optimized to achieve optimal output and product quality. PRACTICAL APPLICATION: Spray drying is a cheap and convenient approach for microencapsulating bioactive compounds such as chlorophyll. However, the physico-chemical and functional properties of the spray-dried microcapsules are influenced by operating conditions, such as inlet temperature, type and concentration of wall materials, and feed flow rate. Therefore, to maximize and obtain a superior quality of the final product, there is a need to optimize the spray drying process. The Box-Behnken design employed in this study could be utilized as an appropriate technique to design, enhance, and develop process parameters for the fabrication and better retention of the physico-chemical properties of spray-dried chlorophyll microcapsules.
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Affiliation(s)
- Israel Emiezi Agarry
- College of Food Science, Southwest University, Chongqing, PR China
- Laboratory of Quality & Safety Risk Assessment for Agro-products on Storage and Preservation (Chongqing), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Chongqing, PR China
- China-Hungary Cooperative Centre for Food Science, Chongqing, PR China
| | - Desheng Ding
- College of Food Science, Southwest University, Chongqing, PR China
- Laboratory of Quality & Safety Risk Assessment for Agro-products on Storage and Preservation (Chongqing), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Chongqing, PR China
- China-Hungary Cooperative Centre for Food Science, Chongqing, PR China
| | - Tian Cai
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
| | - Zhulian Wu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
| | - Pimiao Huang
- College of Food Science, Southwest University, Chongqing, PR China
- Laboratory of Quality & Safety Risk Assessment for Agro-products on Storage and Preservation (Chongqing), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Chongqing, PR China
- China-Hungary Cooperative Centre for Food Science, Chongqing, PR China
| | - Jianquan Kan
- College of Food Science, Southwest University, Chongqing, PR China
- Laboratory of Quality & Safety Risk Assessment for Agro-products on Storage and Preservation (Chongqing), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Chongqing, PR China
- China-Hungary Cooperative Centre for Food Science, Chongqing, PR China
- Chongqing Key Laboratory of Specialty Food Co-built by Sichuan and Chongqing, Chongqing, PR China
| | - Kewei Chen
- College of Food Science, Southwest University, Chongqing, PR China
- Laboratory of Quality & Safety Risk Assessment for Agro-products on Storage and Preservation (Chongqing), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Chongqing, PR China
- China-Hungary Cooperative Centre for Food Science, Chongqing, PR China
- Chongqing Key Laboratory of Specialty Food Co-built by Sichuan and Chongqing, Chongqing, PR China
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Usman M, Sarwar Y, Abbasi R, Ishaq HM, Iftikhar M, Hussain I, Demirdogen RE, Ihsan A. Nanogold morphologies with the same surface chemistry provoke a different innate immune response: An in-vitro and in-vivo study. NANOIMPACT 2022; 28:100419. [PMID: 36038134 DOI: 10.1016/j.impact.2022.100419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/31/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
Gold nanomaterials (GNMs) have unique optical properties with less antigenicity, and their physicochemical properties have strong relation with an immunological response at bio-interface including antigenicity. An interpretation of this correlation would significantly impact on the clinical and theranostic applications of GNMs. Herein, we studied the effect of GNMs morphology on the cytotoxicity (in-vitro), innate immune responses, hepatotoxicity, and nephrotoxicity (in-vivo studies) using gold nano-cups (GNCs), porous gold nanospheres (PGNSs) and solid gold nano particles (SGNPs) coated with the same ligand to ensure similar surface chemistry. The cytotoxicity was assessed via sulfo-rhodamine B (SRB) assay, and the cytotoxicity data showed that morphological features at nanoscale dimensions like surface roughness and hollowness etc. have a significant impact on cellular viability. The biochemical and histopathological study of liver and kidney tissues also showed that all GNMs did not show any toxicity even at high concentration (100 μL). The relative quantification of cytokine gene expression of TNF-α, IFN-γ, IL-4, 1L-6, and 1L-17 (against each morphology) was checked after in-vivo activation in mice. Among the different nanogold morphologies, PVP stabilized GNCs (PVP-GNCs) showed the highest release of pro-inflammatory cytokines, which might be due to their high surface energy and large surface area for exposure as compared to other nanogold morphologies studied. The pro-inflammatory cytokine release could be suppressed by coating with some anti-inflammatory polymer, i.e., inulin. The in-vitro results of pro-inflammatory (TNF-α, IL-1) cytokines also suggested that all GNMs may induce activation of macrophages and Th1 immune response. The in-vivo activation results showed a decrease in mRNA expression of the cytokines (TNF-α, IFN-γ, IL-4, 1L-6 and 1L-17). Based on these findings, we proposed that the shape and morphology of GNMs control their immune response at nano-bio interface, and it must be considered while designing their role for different biomedical applications like immuno-stimulation and bio-imaging.
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Affiliation(s)
- Muhammad Usman
- National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Punjab, Pakistan; Department of Biochemistry and Biotechnology, Faculty of Veterinary and Animal Sciences, MNS-University of Agriculture, Multan 66000, Pakistan
| | - Yasra Sarwar
- National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Punjab, Pakistan
| | - Rashda Abbasi
- Institute of Biomedical and Genetic Engineering, G-9/1, Islamabad, Pakistan
| | - Hafiz Muhammad Ishaq
- Department of Pathobiology, Faculty of Veterinary and Animal Sciences, MNS-University of Agriculture, Multan 66000, Pakistan
| | - Maryam Iftikhar
- National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Punjab, Pakistan
| | - Irshad Hussain
- Department of Chemistry and Chemical Engineering, SBA School of Science and Engineering (SBA-SSE), Lahore University of Management Sciences (LUMS), Lahore 54792, Pakistan
| | - Ruken Esra Demirdogen
- Faculty of Science, Department of Chemistry, Çankırı Karatekin University, Çankırı 18100, Turkey
| | - Ayesha Ihsan
- National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C, PIEAS), Faisalabad 38000, Punjab, Pakistan.
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5
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Rahman N, Raheem A. Fabrication of graphene oxide/inulin impregnated with ZnO nanoparticles for efficient removal of enrofloxacin from water: Taguchi-optimized experimental analysis. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 318:115525. [PMID: 35724574 DOI: 10.1016/j.jenvman.2022.115525] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/11/2022] [Accepted: 06/11/2022] [Indexed: 06/15/2023]
Abstract
A novel nano-adsorbent zinc oxide impregnated graphene oxide/inulin (ZGI) was prepared for the investigation of the removal efficiency of enrofloxacin. Characterization of the nano-adsorbent was accomplished through Fourier transform Infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with EDS, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The average crystallite size of nanomaterial (ZGI) calculated from XRD data was 14.82 nm. The adsorption of enrofloxacin onto ZGI was performed in batch mode. The variables of adsorption process such as adsorbent dose, pH, contact time and initial concentration of enrofloxacin were optimized by Taguchi method to achieve the maximum removal efficiency. The optimum values of variables were: adsorbent dose = 25 mg, pH = 7, contact time = 60 min and initial concentration = 50 mg/L. The maximum adsorption capacity and removal efficiency of the material for enrofloxacin were 317.83 mg/g and 98.60%, respectively at 303 K. Redlich-Peterson isotherm model was the best fitted among the various isotherm models based on highest R2 values (0.9978-0.9981) and lowest χ2 (3.43 ×10-4-2.00×10-3). Kinetic data followed pseudo-second order model (R2 ≥ 0.9974) more accurately as compared to pseudo-first order model (R2≤0.9772). The adsorption mechanism was illustrated on the basis of XPS and Raman studies. Reusability investigation showed that the nano-adsorbent ZGI could be used up to 5 adsorption-desorption cycles with greater than 90% removal efficiency.
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Affiliation(s)
- Nafisur Rahman
- Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, India.
| | - Abdur Raheem
- Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, India
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6
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Heo JB, Lee YS, Chung CH. Conversion of inulin-rich raw plant biomass to 2,5-furandicarboxylic acid (FDCA): Progress and challenge towards biorenewable plastics. Biotechnol Adv 2021; 53:107838. [PMID: 34571195 DOI: 10.1016/j.biotechadv.2021.107838] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/15/2021] [Accepted: 09/19/2021] [Indexed: 12/27/2022]
Abstract
The current commercial plastic manufactures have been produced using petroleum-based resource. However, due to concerns over the resource depletion and the environmental sustainability, bioresource-based manufacturing processes have been developed to cope against these concerns. Bioresource-derived 2,5-furandicarboxylic acid (FDCA) can be utilized as a building block material for plastic manufactures. To date, numerous technologies have been developed for the production of FDCA using various types of bio-based feedstocks such as hydroxymethylfurfural (HMF), 6-C sugars, and polysaccharides. The commercial companies produce FDCA using HMF-based production processes due to their high production efficiency, but the high price of HMF is a problem bottleneck. Our review affords important information on breakthrough approaches for the cost-efficient and sustainable production of FDCA using raw plant feedstocks rich in inulin. These approaches include bioprocessing technology based on the direct use of raw plant feedstocks and biomodification of the target plant sources. For the former, an ionic liquid-based processing system is proposed for efficient pretreatment of raw plant feedstocks. For the latter, the genes encoding the key enzymes; sucrose:sucrose 1-fructoyltransferase (1-SST), fructan:fructan 1-fryuctosyltransferase (1-FFT), fructan 1-exohydrolase (1-FEH), and microbe-derived endoinulinase, are introduced for biomodification conducive to facilitating bioprocess and improving inulin content. These approaches would contribute to cost-efficiently and sustainably producing bio-based FDCA.
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Affiliation(s)
- Jae Bok Heo
- Department of Molecular Genetic Biotechnology, Dong-A University, Busan, South Korea
| | - Yong-Suk Lee
- Division of Applied Life Science (BK21), Gyeongsang National University, Jinju, South Korea
| | - Chung-Han Chung
- Department of Biotechnology, Dong-A University, Busan, South Korea.
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7
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Grego EA, Siddoway AC, Uz M, Liu L, Christiansen JC, Ross KA, Kelly SM, Mallapragada SK, Wannemuehler MJ, Narasimhan B. Polymeric Nanoparticle-Based Vaccine Adjuvants and Delivery Vehicles. Curr Top Microbiol Immunol 2021; 433:29-76. [PMID: 33165869 PMCID: PMC8107186 DOI: 10.1007/82_2020_226] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
As vaccine formulations have progressed from including live or attenuated strains of pathogenic components for enhanced safety, developing new adjuvants to more effectively generate adaptive immune responses has become necessary. In this context, polymeric nanoparticles have emerged as a promising platform with multiple advantages, including the dual capability of adjuvant and delivery vehicle, administration via multiple routes, induction of rapid and long-lived immunity, greater shelf-life at elevated temperatures, and enhanced patient compliance. This comprehensive review describes advances in nanoparticle-based vaccines (i.e., nanovaccines) with a particular focus on polymeric particles as adjuvants and delivery vehicles. Examples of the nanovaccine approach in respiratory infections, biodefense, and cancer are discussed.
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Affiliation(s)
- Elizabeth A Grego
- Departments of Chemical and Biological Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Alaric C Siddoway
- Departments of Chemical and Biological Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Metin Uz
- Departments of Chemical and Biological Engineering, Iowa State University, Ames, IA, 50011, USA
- Departments of Nanovaccine Institute, Iowa State University, Ames, IA, 50011, USA
| | - Luman Liu
- Departments of Chemical and Biological Engineering, Iowa State University, Ames, IA, 50011, USA
| | - John C Christiansen
- Departments of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, 50011, USA
| | - Kathleen A Ross
- Departments of Nanovaccine Institute, Iowa State University, Ames, IA, 50011, USA
| | - Sean M Kelly
- Departments of Chemical and Biological Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Surya K Mallapragada
- Departments of Chemical and Biological Engineering, Iowa State University, Ames, IA, 50011, USA
- Departments of Nanovaccine Institute, Iowa State University, Ames, IA, 50011, USA
| | - Michael J Wannemuehler
- Departments of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, 50011, USA
- Departments of Nanovaccine Institute, Iowa State University, Ames, IA, 50011, USA
| | - Balaji Narasimhan
- Departments of Chemical and Biological Engineering, Iowa State University, Ames, IA, 50011, USA.
- Departments of Nanovaccine Institute, Iowa State University, Ames, IA, 50011, USA.
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8
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Preparation and release properties of arbutin imprinted inulin/polyvinyl alcohol biomaterials. Int J Biol Macromol 2020; 161:763-770. [DOI: 10.1016/j.ijbiomac.2020.06.105] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/09/2020] [Accepted: 06/11/2020] [Indexed: 11/22/2022]
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9
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Castellino M, Renna M, Leoni B, Calasso M, Difonzo G, Santamaria P, Gambacorta G, Caponio F, De Angelis M, Paradiso VM. Conventional and unconventional recovery of inulin rich extracts for food use from the roots of globe artichoke. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105975] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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10
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Afinjuomo F, Fouladian P, Barclay TG, Song Y, Petrovsky N, Garg S. Influence of Oxidation Degree on the Physicochemical Properties of Oxidized Inulin. Polymers (Basel) 2020; 12:polym12051025. [PMID: 32369991 PMCID: PMC7284776 DOI: 10.3390/polym12051025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/17/2020] [Accepted: 04/26/2020] [Indexed: 12/27/2022] Open
Abstract
This paper reports the oxidation of inulin using varying ratios of sodium periodate and the characterization of the inulin polyaldehyde. The physicochemical properties of the inulin polyaldehyde (oxidized inulin) were characterized using different techniques including 1D NMR spectroscopy, 13C Nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), differential scanning calorimetric (DSC), ultraviolet-visible spectroscopy (UV), and scanning electron microscopy (SEM). The aldehyde peak was not very visible in the FTIR, because the aldehyde functional group exists in a masked form (hemiacetal). The thermal stability of the oxidized inulin decreased with the increasing oxidation degree. The smooth spherical shape of raw inulin was destructed due to the oxidation, as confirmed by the SEM result. The 1HNMR results show some new peaks from 4.8 to 5.0 as well as around 5.63 ppm. However, no aldehyde peak was found around 9.7 ppm. This can be attributed to the hemiacetal. The reaction of oxidized inulin with tert-butyl carbazate produced a carbazone conjugate. There was clear evidence of decreased peak intensity for the proton belonging to the hemiacetal group. This clearly shows that not all of the hemiacetal group can be reverted by carbazate. In conclusion, this work provides vital information as regards changes in the physicochemical properties of the oxidized inulin, which has direct implications when considering the further utilization of this biomaterial.
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Affiliation(s)
- Franklin Afinjuomo
- Pharmaceutical Innovation and Development Group, University of South Australia, Adelaide 5000, Australia; (F.A.); (P.F.); (T.G.B.); (Y.S.)
| | - Paris Fouladian
- Pharmaceutical Innovation and Development Group, University of South Australia, Adelaide 5000, Australia; (F.A.); (P.F.); (T.G.B.); (Y.S.)
| | - Thomas G. Barclay
- Pharmaceutical Innovation and Development Group, University of South Australia, Adelaide 5000, Australia; (F.A.); (P.F.); (T.G.B.); (Y.S.)
| | - Yunmei Song
- Pharmaceutical Innovation and Development Group, University of South Australia, Adelaide 5000, Australia; (F.A.); (P.F.); (T.G.B.); (Y.S.)
| | - Nikolai Petrovsky
- Vaxine Pty. Ltd., Adelaide 5042, Australia;
- Department of Endocrinology, Flinders University, Adelaide 5042, Australia
| | - Sanjay Garg
- Pharmaceutical Innovation and Development Group, University of South Australia, Adelaide 5000, Australia; (F.A.); (P.F.); (T.G.B.); (Y.S.)
- Correspondence: ; Tel.: +61-8-8302-1567
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11
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González-Garcinuño Á, Tabernero A, Marcelo G, Martín Del Valle E. A comprehensive study on levan nanoparticles formation: Kinetics and self-assembly modeling. Int J Biol Macromol 2019; 147:1089-1098. [PMID: 31739059 DOI: 10.1016/j.ijbiomac.2019.10.076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/28/2019] [Accepted: 10/08/2019] [Indexed: 11/15/2022]
Abstract
Levan nanoparticles formation is a complicated phenomenon involving simultaneously polymeric reaction kinetics and nanoparticles self-assembly theory. These phenomena are studied in this work with experimental and computational methodologies. Specifically, the effect of different parameters on levan kinetics and nanoparticles production in a cell-free system environment have been studied. Results point out that 37 °C is the best temperature for synthesizing levan as well as the existence of a substrate inhibition effect for polymeric reaction. This work also highlights that raffinose can be used for producing and that an increase on the ratio enzyme-substrate increases the velocity of conversion. However, the previous experimental conditions did not produce an important effect on self-assembly formed levan nanoparticles (always 110 nm) as long as the required levan concentration (CAC) for nanoparticles reorganization is achieved. To have a better understanding of these results, a model was developed to explain numerically levan kinetics and nanoparticle self-assembly. This model was built by taking into account enzyme poisoning effect (also demonstrated experimentally) and a diffusion limited cluster model for the aggregation phenomenon. Simulation results fit properly experimental data and catalytic parameters as well as predicting accurately the value of CAC for producing its reorganization into nanoparticles by self-assembly.
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Affiliation(s)
| | - Antonio Tabernero
- Department of Chemical Engineering, University of Salamanca, Plaza Los Caídos s/n, Salamanca, Spain
| | - Gema Marcelo
- Department of Chemical Engineering, University of Salamanca, Plaza Los Caídos s/n, Salamanca, Spain
| | - Eva Martín Del Valle
- Department of Chemical Engineering, University of Salamanca, Plaza Los Caídos s/n, Salamanca, Spain; Institute for Biomedical Research of Salamanca (IBSAL), Paseo de San Vicente, 58-182, Salamanca, Spain.
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Wang L, Song Y, Parikh A, Joyce P, Chung R, Liu L, Afinjuomo F, Hayball JD, Petrovsky N, Barclay TG, Garg S. Doxorubicin-Loaded Delta Inulin Conjugates for Controlled and Targeted Drug Delivery: Development, Characterization, and In Vitro Evaluation. Pharmaceutics 2019; 11:pharmaceutics11110581. [PMID: 31698755 PMCID: PMC6920814 DOI: 10.3390/pharmaceutics11110581] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 10/15/2019] [Accepted: 10/21/2019] [Indexed: 02/06/2023] Open
Abstract
Delta inulin, also known as microparticulate inulin (MPI), was modified by covalently attaching doxorubicin to its nanostructured surface for use as a targeted drug delivery vehicle. MPI is readily endocytosed by monocytes, macrophages, and dendritic cells and in this study, we sought to utilize this property to develop a system to target anti-cancer drugs to lymphoid organs. We investigated, therefore, whether MPI could be used as a vehicle to deliver doxorubicin selectively, thereby reducing the toxicity of this antibiotic anthracycline drug. Doxorubicin was covalently attached to the surface of MPI using an acid–labile linkage to enable pH-controlled release. The MPI-doxorubicin conjugate was characterized using FTIR and SEM, confirming covalent attachment and indicating doxorubicin coupling had no obvious impact on the physical nanostructure, integrity, and cellular uptake of the MPI particles. To simulate the stability of the MPI-doxorubicin in vivo, it was stored in artificial lysosomal fluid (ALF, pH 4.5). Although the MPI-doxorubicin particles were still visible after 165 days in ALF, 53% of glycosidic bonds in the inulin particles were hydrolyzed within 12 days in ALF, reflected by the release of free glucose into solution. By contrast, the fructosidic bonds were much more stable. Drug release studies of the MPI-doxorubicin in vitro, demonstrated a successful pH-dependent controlled release effect. Confocal laser scanning microscopy studies and flow cytometric analysis confirmed that when incubated with live cells, MPI-doxorubicin was efficiently internalized by immune cells. An assay of cell metabolic activity demonstrated that the MPI carrier alone had no toxic effects on RAW 264.7 murine monocyte/macrophage-like cells, but exhibited anti-cancer effects against HCT116 human colon cancer cells. MPI-doxorubicin had a greater anti-cancer cell effect than free doxorubicin, particularly when at lower concentrations, suggesting a drug-sparing effect. This study establishes that MPI can be successfully modified with doxorubicin for chemotherapeutic drug delivery.
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Affiliation(s)
- Lixin Wang
- Centre for Pharmaceutical Innovation and Development, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide SA 5000, Australia; (L.W.); (Y.S.); (A.P.); (R.C.); (F.A.); (T.G.B.)
| | - Yunmei Song
- Centre for Pharmaceutical Innovation and Development, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide SA 5000, Australia; (L.W.); (Y.S.); (A.P.); (R.C.); (F.A.); (T.G.B.)
| | - Ankit Parikh
- Centre for Pharmaceutical Innovation and Development, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide SA 5000, Australia; (L.W.); (Y.S.); (A.P.); (R.C.); (F.A.); (T.G.B.)
| | - Paul Joyce
- Division of Biological Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden;
| | - Rosa Chung
- Centre for Pharmaceutical Innovation and Development, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide SA 5000, Australia; (L.W.); (Y.S.); (A.P.); (R.C.); (F.A.); (T.G.B.)
| | - Liang Liu
- Experimental Therapeutics Laboratory, University of South Australia Cancer Research Institute, Adelaide SA 5000, Australia; (L.L.); (J.D.H.)
| | - Franklin Afinjuomo
- Centre for Pharmaceutical Innovation and Development, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide SA 5000, Australia; (L.W.); (Y.S.); (A.P.); (R.C.); (F.A.); (T.G.B.)
| | - John D. Hayball
- Experimental Therapeutics Laboratory, University of South Australia Cancer Research Institute, Adelaide SA 5000, Australia; (L.L.); (J.D.H.)
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide SA 5005, Australia
| | - Nikolai Petrovsky
- Vaxine Pty Ltd., Bedford Park, Adelaide 5042, Australia;
- Department of Diabetes and Endocrinology, Flinders University, Adelaide 5042, Australia
| | - Thomas G. Barclay
- Centre for Pharmaceutical Innovation and Development, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide SA 5000, Australia; (L.W.); (Y.S.); (A.P.); (R.C.); (F.A.); (T.G.B.)
| | - Sanjay Garg
- Centre for Pharmaceutical Innovation and Development, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide SA 5000, Australia; (L.W.); (Y.S.); (A.P.); (R.C.); (F.A.); (T.G.B.)
- Correspondence: ; Tel.: +61-8-8302-1067
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Synthesis and Characterization of pH-Sensitive Inulin Conjugate of Isoniazid for Monocyte-Targeted Delivery. Pharmaceutics 2019; 11:pharmaceutics11110555. [PMID: 31661841 PMCID: PMC6920787 DOI: 10.3390/pharmaceutics11110555] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/14/2019] [Accepted: 10/25/2019] [Indexed: 12/13/2022] Open
Abstract
The use of particles for monocyte-mediated delivery could be a more efficient strategy and approach to achieve intracellular targeting and delivery of antitubercular drugs to host macrophages. In this study, the potential of inulin microparticles to serve as a drug vehicle in the treatment of chronic tuberculosis using a monocytes-mediated drug targeting approach was evaluated. Isoniazid (INH) was conjugated to inulin via hydrazone linkage in order to obtain a pH-sensitive inulin-INH conjugate. The conjugate was then characterized using proton nuclear magnetic resonance (1HNMR), Fourier transform infrared spectroscopy (FTIR) as well as in vitro, cellular uptake and intracellular Mycobacterium tuberculosis (Mtb) antibacterial efficacy. The acid-labile hydrazone linkage conferred pH sensitivity to the inulin-INH conjugate with ~95, 77 and 65% of the drug released after 5 h at pH 4.5, 5.2, and 6.0 respectively. Cellular uptake studies confirm that RAW 264.7 monocytic cells efficiently internalized the inulin conjugates into endocytic compartments through endocytosis. The intracellular efficacy studies demonstrate that the inulin conjugates possess a dose-dependent targeting effect against Mtb-infected monocytes. This was through efficient internalization and cleavage of the hydrazone bond by the acidic environment of the lysosome, which subsequently released the isoniazid intracellularly to the Mtb reservoir. These results clearly suggest that inulin conjugates can serve as a pH-sensitive intracellular drug delivery system for TB treatment.
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Barclay TG, Day CM, Petrovsky N, Garg S. Review of polysaccharide particle-based functional drug delivery. Carbohydr Polym 2019; 221:94-112. [PMID: 31227171 PMCID: PMC6626612 DOI: 10.1016/j.carbpol.2019.05.067] [Citation(s) in RCA: 196] [Impact Index Per Article: 39.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 04/26/2019] [Accepted: 05/22/2019] [Indexed: 01/06/2023]
Abstract
This review investigates the significant role polysaccharide particles play in functional drug delivery. The importance of these systems is due to the wide variety of polysaccharides and their natural source meaning that they can provide biocompatible and biodegradable systems with a range of both biological and chemical functionality valuable for drug delivery. This functionality includes protection and presentation of working therapeutics through avoidance of the reticuloendothelial system, stabilization of biomacromolecules and increasing the bioavailability of incorporated small molecule drugs. Transport of the therapeutic is also key to the utility of polysaccharide particles, moving drugs from the site of administration through mucosal binding and transport and using chemistry, size and receptor mediated drug targeting to specific tissues. This review also scrutinizes the methods of synthesizing and constructing functional polysaccharide particle drug delivery systems that maintain and extend the functionality of the natural polysaccharides.
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Affiliation(s)
- Thomas G Barclay
- School of Pharmacy and Medical Science, University of South Australia, Adelaide, SA 5000, Australia.
| | - Candace Minhthu Day
- School of Pharmacy and Medical Science, University of South Australia, Adelaide, SA 5000, Australia.
| | - Nikolai Petrovsky
- Vaxine Pty Ltd, 1 Flinders Drive, Bedford Park, SA 5042, Australia; Department of Endocrinology, Flinders Medical Centre/Flinders University, Bedford Park, SA 5042, Australia.
| | - Sanjay Garg
- School of Pharmacy and Medical Science, University of South Australia, Adelaide, SA 5000, Australia.
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Youn HG, Je JY, Lee CM, Yoon SD. Inulin/PVA biomaterials using thiamine as an alternative plasticizer. Carbohydr Polym 2019; 220:86-94. [DOI: 10.1016/j.carbpol.2019.05.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/15/2019] [Accepted: 05/20/2019] [Indexed: 02/09/2023]
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Heddle R, Smith A, Woodman R, Hissaria P, Petrovsky N. Randomized controlled trial demonstrating the benefits of delta inulin adjuvanted immunotherapy in patients with bee venom allergy. J Allergy Clin Immunol 2019; 144:504-513.e16. [PMID: 31300280 PMCID: PMC7112352 DOI: 10.1016/j.jaci.2019.03.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/11/2019] [Accepted: 03/22/2019] [Indexed: 12/29/2022]
Abstract
Background Allergic reactions to Hymenoptera insect stings remain a major global clinical problem. Although effective, parenteral desensitization regimens require use of costly venom extracts and require frequent visits over extended periods of time. Objective Adjuvants are commonly used to enhance the efficacy of infectious disease vaccines, and this study asked whether Advax (Vaxine Pty Ltd, Adelaide, Australia), a novel noninflammatory polysaccharide adjuvant, might provide similar benefits for allergy desensitization. Methods A randomized, controlled phase 1/2 trial was undertaken in 27 adults with a history of rapid-onset systemic allergic reactions to honeybee stings and positive specific IgE levels to evaluate the safety and efficacy of honeybee venom immunotherapy (HBVIT) combined with Advax adjuvant. Venom immunotherapy (VIT) was administered monthly for 30 months after achievement of maintenance doses. Results Advax-adjuvanted HBVIT was well tolerated. Around week 14 of VIT, specific IgG4 responses peaked in both groups but increased earlier, peaked higher, and were better maintained through the end of the study in the Advax-adjuvanted arm. Several different patterns of serologic response to VIT were seen; some subjects had a dominant IgG4 response, some had a combined IgG4 and IgG1 response, and some had an exclusively IgG1 response. In some subjects specific IgE levels increased during the induction phase and then decreased, whereas in others specific IgE levels progressively decreased from the start of VIT. Conclusion Advax adjuvant favorably enhanced the immunogenicity of HBVIT, with an early and prolonged switch to specific IgG4 production. The ability of Advax adjuvant to enhance VIT efficacy warrants further study.
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Affiliation(s)
- Robert Heddle
- University of Adelaide, North Terrace, Adelaide, Australia; Royal Adelaide Hospital, North Terrace, Adelaide, Australia; Flinders University, Bedford Park, Australia
| | - Anthony Smith
- Allergy and Clinical Immunology Department, Flinders Medical Centre, Bedford Park, Australia
| | - Richard Woodman
- Flinders Centre for Epidemiology and Biostatistics, Flinders University, Bedford Park, Australia
| | | | - Nikolai Petrovsky
- Flinders University, Bedford Park, Australia; Vaxine, Bedford Park, Australia.
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Design and Characterization of Inulin Conjugate for Improved Intracellular and Targeted Delivery of Pyrazinoic Acid to Monocytes. Pharmaceutics 2019; 11:pharmaceutics11050243. [PMID: 31121836 PMCID: PMC6572292 DOI: 10.3390/pharmaceutics11050243] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/10/2019] [Accepted: 05/16/2019] [Indexed: 11/16/2022] Open
Abstract
The propensity of monocytes to migrate into sites of mycobacterium tuberculosis (TB) infection and then become infected themselves makes them potential targets for delivery of drugs intracellularly to the tubercle bacilli reservoir. Conventional TB drugs are less effective because of poor intracellular delivery to this bacterial sanctuary. This study highlights the potential of using semicrystalline delta inulin particles that are readily internalised by monocytes for a monocyte-based drug delivery system. Pyrazinoic acid was successfully attached covalently to the delta inulin particles via a labile linker. The formation of new conjugate and amide bond was confirmed using zeta potential, Proton Nuclear Magnetic Resonance (1HNMR) and Fourier transform infrared spectroscopy (FTIR). Scanning electron microscopy (SEM) confirmed that no significant change in size after conjugation which is an important parameter for monocyte targeting. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to establish the change in thermal properties. The analysis of in-vitro release demonstrated pH-triggered drug cleavage off the delta inulin particles that followed a first-order kinetic process. The efficient targeting ability of the conjugate for RAW 264.7 monocytic cells was supported by cellular uptake studies. Overall, our finding confirmed that semicrystalline delta inulin particles (MPI) can be modified covalently with drugs and such conjugates allow intracellular drug delivery and uptake into monocytes, making this system potentially useful for the treatment of TB.
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Lu X, Chen J, Guo Z, Zheng Y, Rea MC, Su H, Zheng X, Zheng B, Miao S. Using polysaccharides for the enhancement of functionality of foods: A review. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.02.024] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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19
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Narh C, Charles F, Mensah A, Qufu W. Synthesis of highly stable bacterial cellulosic pocket for drug storage. Carbohydr Polym 2019; 206:625-632. [DOI: 10.1016/j.carbpol.2018.11.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/15/2018] [Accepted: 11/15/2018] [Indexed: 02/08/2023]
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Romano N, Mobili P, Zuñiga-Hansen ME, Gómez-Zavaglia A. Physico-chemical and structural properties of crystalline inulin explain the stability of Lactobacillus plantarum during spray-drying and storage. Food Res Int 2018; 113:167-174. [PMID: 30195509 DOI: 10.1016/j.foodres.2018.07.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 07/02/2018] [Accepted: 07/04/2018] [Indexed: 01/21/2023]
Abstract
The stabilizing capacity of crystalline inulin during spray-drying and storage of Lactobacillus plantarum CIDCA 83114 was assessed. In a first step, the physical properties of the matrices were investigated, using amorphous inulin as control. Melting and glass transition temperatures, water sorption isotherms, water activity, and infrared spectra were determined. Microorganisms were spray-dried at a pilot scale in both amorphous and crystalline matrices. After that, scanning electronic and confocal microsopies provided a full landscape about the interactions between microorganisms and crystals, and also the bacterial location within the amorphous matrices. The technological properties of the dehydrated microorganisms (culturability and acidification capacity) during storage at different water activities were also evaluated. Both amorphous and crystalline inulins were adequate matrices to stabilize microorganisms. However, crystalline inulin was more stable than amorphous one, especially when the storage temperature was close to the glass transition temperature, resulting in a better matrix to protect microorganisms during pilot spray-drying and storage. Furthermore, no accumulation of insoluble inulin was observed after resuspending the dehydrated microorganisms in crystalline inulin matrices, which appears as a clear technological advantage with regard to the amorphous one. Considering the prebiotic character of inulin and the probiotic properties of L. plantarum CIDCA 83114, this work developed an integrated approach, both from a fundamental and from an applied viewpoint, supporting the incorporation of such ingredients in the formulation of food products.
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Affiliation(s)
- Nelson Romano
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata), RA1900 La Plata, Argentina
| | - Pablo Mobili
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata), RA1900 La Plata, Argentina
| | - Maria Elvira Zuñiga-Hansen
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2147, Valparaíso, Chile; Centro Regional de Estudios en Alimentos Saludables (CREAS), Conicyt-Regional, Gore Región de Valparaíso, R06i1004, Blanco 1623, Valparaíso, Chile
| | - Andrea Gómez-Zavaglia
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata), RA1900 La Plata, Argentina.
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Infrared spectroscopy as an alternative methodology to evaluate the effect of structural features on the physical-chemical properties of inulins. Food Res Int 2018; 109:223-231. [DOI: 10.1016/j.foodres.2018.04.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 04/13/2018] [Accepted: 04/15/2018] [Indexed: 01/23/2023]
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22
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Fornefett I, Buttersack C. Exo-enzyme like degradation of a polysaccharide by an inorganic solid acid catalyst. Carbohydr Polym 2018; 187:126-132. [DOI: 10.1016/j.carbpol.2018.01.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 01/10/2018] [Accepted: 01/20/2018] [Indexed: 10/18/2022]
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Cao TL, Yang SY, Song KB. Development of Burdock Root Inulin/Chitosan Blend Films Containing Oregano and Thyme Essential Oils. Int J Mol Sci 2018; 19:E131. [PMID: 29301339 PMCID: PMC5796080 DOI: 10.3390/ijms19010131] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 12/29/2017] [Accepted: 12/30/2017] [Indexed: 11/17/2022] Open
Abstract
In this study, inulin (INU) extracted from burdock root was utilized as a new film base material and combined with chitosan (CHI) to prepare composite films. Oregano and thyme essential oils (OT) were incorporated into the INU-CHI film to confer the films with bioactivities. The physical and optical properties as well as antioxidant and antimicrobial activities of the films were evaluated. INU film alone showed poor physical properties. In contrast, the compatibility of INU and CHI demonstrated by the changes in attenuated total reflectance-Fourier transformation infrared spectrum of the INU-CHI film increased tensile strength and elongation at break of the INU film by 8.2- and 3.9-fold, respectively. In addition, water vapor permeability, water solubility, and moisture content of the films decreased proportionally with increasing OT concentration in the INU-CHI film. Incorporation of OT also increased the opacity of a and b values and decreased the L value of the INU-CHI films. All INU-CHI films containing OT exhibited antioxidant and antimicrobial properties. Particularly, the INU-CHI film with 2.0% OT exhibited the highest 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid), 2,2-diphenyl-1-picrylhydrazyl radical scavenging, and antimicrobial activities against four pathogens. Thus, the INU-CHI film containing OT developed in this study might be utilized as an active packaging material in the food industry.
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Affiliation(s)
- Thi Luyen Cao
- Department of Food Science and Technology, Chungnam National University, Daejeon 34134, Korea.
| | - So-Young Yang
- Department of Food Science and Technology, Chungnam National University, Daejeon 34134, Korea.
| | - Kyung Bin Song
- Department of Food Science and Technology, Chungnam National University, Daejeon 34134, Korea.
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Matsuzaki C, Takagaki C, Tomabechi Y, Forsberg LS, Heiss C, Azadi P, Matsumoto K, Katoh T, Hosomi K, Kunisawa J, Yamamoto K, Hisa K. Structural characterization of the immunostimulatory exopolysaccharide produced by Leuconostoc mesenteroides strain NTM048. Carbohydr Res 2017. [DOI: 10.1016/j.carres.2017.06.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Investigation of the biodistribution, breakdown and excretion of delta inulin adjuvant. Vaccine 2017; 35:4382-4388. [PMID: 28676380 DOI: 10.1016/j.vaccine.2017.06.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 06/16/2017] [Accepted: 06/19/2017] [Indexed: 01/08/2023]
Abstract
Insoluble, nanostructured delta inulin particles enhance the immunogenicity of co-administered protein antigens and consequently are used as a vaccine adjuvant (Advax™). To better understand their immunomodulatory properties, the in vitro hydrolysis and in vivo distribution of delta inulin particles were investigated. Delta inulin particle hydrolysis under bio-relevant acidic conditions resulted in no observable change to the bulk morphology using SEM, and HPLC results showed that only 6.1% of the inulin was hydrolysed over 21days. However, 65% of the terminal glucose groups were released, showing that acid hydrolysis relatively rapidly releases surface bound chemistries. This was used to explain in vivo biodistribution results in which delta inulin particles surface-labelled with fluorescein-5-thiosemicabizide were administered to mice using intramuscular (I.M.) or subcutaneous (S.C.) routes. Comparison analysis of the fluorescence of soluble inulin in the supernatants of homogenised tissues maintained at room temperature or heated to 100°C to solubilise particulate inulin was used to distinguish between fluorescent probe on soluble inulin and probe bound to inulin within particles. Following both I.M. and S.C. injection delta inulin exhibited a depot behaviour with local injection site residence for several weeks. Over this time, as injection site inulin reduced, there was measurable transport of intact delta inulin particles by macrophages to secondary lymphoid organs and the liver. Ultimately, the injected delta inulin became solubilised resulting in its detection in the plasma and in the urine. Thus injected delta inulin particles are initially taken up by macrophages at the site of injection, trafficked to secondary lymphoid tissue and the liver, and hydrolysed resulting in their becoming soluble and diffusing into the blood stream, from whence they are glomerularly filtered and excreted into the urine. These results provide important insights into the biodistribution of I.M. or S.C. injected delta inulin particles when used as vaccine adjuvants and their method of excretion.
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Honda-Okubo Y, Rajapaksha H, Sajkov D, Gordon D, Cox MMJ, Petrovsky N. Panblok-H1+advax H1N1/2009pdm vaccine: Insights into rapid development of a delta inulin adjuvanted recombinant pandemic influenza vaccine. Hum Vaccin Immunother 2017; 13:1-11. [PMID: 28301280 PMCID: PMC5489286 DOI: 10.1080/21645515.2017.1279765] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Timely vaccine supply is critical during influenza pandemics but is impeded by current virus-based manufacturing methods. The 2009 H1N1/2009pdm 'swine flu' pandemic reinforced the need for innovation in pandemic vaccine design. We report on insights gained during rapid development of a pandemic vaccine based on recombinant haemagglutinin (rHA) formulated with Advax™ delta inulin adjuvant (Panblok-H1/Advax). Panblok-H1/Advax was designed and manufactured within 1 month of the pandemic declaration by WHO and successfully entered human clinical testing in under 3 months from first isolation and sequencing of the novel pandemic virus, requiring several major challenges to be overcome. Panblok-H1/Advax successfully induced neutralising antibodies against the pandemic strain, but also induced cross-neutralising antibodies in a subset of subjects against an H1N1 strain (A/Puerto Rico/8/34) derived from the 1918 Spanish flu, highlighting the possibility to use Advax to induce more broadly cross-protective antibody responses. Interestingly, the rHA from H1N1/2009pdm exhibited variants in the receptor binding domain that had a major impact on receptor binding and hemagglutination ability. We used an in silico structural modeling approach to better understand the unusual behavior of the novel hemagglutinin, thereby demonstrating the power of computational modeling approaches for rapid characterization of new pandemic viruses. While challenges remain in ensuring ultrafast vaccine access for the entire population in response to future pandemics, the adjuvanted recombinant Panblok-H1/Advax vaccine proved its utility during a real-life pandemic situation.
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Affiliation(s)
- Yoshikazu Honda-Okubo
- a Vaxine Pty Ltd, Flinders Medical Centre , Adelaide , Australia.,b Department of Endocrinology , Flinders University , Adelaide , Australia
| | - Harinda Rajapaksha
- a Vaxine Pty Ltd, Flinders Medical Centre , Adelaide , Australia.,b Department of Endocrinology , Flinders University , Adelaide , Australia
| | - Dimitar Sajkov
- c Australian Respiratory and Sleep Medicine Institute , Adelaide , Australia
| | - David Gordon
- d Microbiology and Infectious Diseases Department , Flinders Medical Centre , Adelaide , Australia
| | | | - Nikolai Petrovsky
- a Vaxine Pty Ltd, Flinders Medical Centre , Adelaide , Australia.,b Department of Endocrinology , Flinders University , Adelaide , Australia
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