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Mottola S, Iannone G, Giordano M, González-Garcinuño Á, Jiménez A, Tabernero A, Martín Del Valle E, De Marco I. Supercritical impregnation of starch aerogels with quercetin: Fungistatic effect and release modelling with a compartmental model. Int J Biol Macromol 2023; 253:127406. [PMID: 37832612 DOI: 10.1016/j.ijbiomac.2023.127406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/30/2023] [Accepted: 10/10/2023] [Indexed: 10/15/2023]
Abstract
This work proposes the use of supercritical CO2 to impregnate starch (potato and corn) aerogels with quercetin for a potential fungistatic application. Starch aerogels were successfully produced with supercritical drying, but different results were found depending on the amylose/amylopectin ratio. A higher amount of amylose increases aerogels' specific surface area (with a structure with nanofibrils and nodes) due to the linear and amorphous character of this polymer, whereas a higher amount of amylopectin decreases this property until values of only 25 m2·g-1, obtaining an aerogel with a rough surface. These results were explained with XRD, thermogravimetric, and rheological results (triple step with two temperature sweeps and a time sweep and steady state analysis) concerning hydrogel formation. In fact, retrogradation step plays a more important role in hydrogel formation for a starch source with a higher amount of amylopectin due to an increase in the different polymers' interactions. Supercritical impregnation of quercetin on the aerogels was successfully performed (a loading around 0.30 % with respect to the amount of polymer), and in vitro results indicated that the aerogels produced a fungistatic effect on different types of fungi, but only in the first 12 h because the microorganisms adapted to the surrounding environment. Finally, a compartmental model was used to fit the drug release, which is controlled by quercetin aqueous solubility, indicating the main mass transfer resistances (mass transfer through aerogels was always around 500 min-1 and dissolution process mass transfer from 5·10-3 to 1.65·10-3 s-1) and how an increase in the specific surface area of the aerogels (in the case of corn aerogel) provided a stronger initial burst (70-80 % in 20 min). In fact, this initial burst release was mathematically related to a parameter, that varies from 0.178 to 0.036 depending on the aerogel composition. This study shows that starch aerogels can be impregnated with a hydrophobic compound with fungistatic effect by using supercritical CO2, modifying in addition the drug release by changing the native starch.
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Affiliation(s)
- Stefania Mottola
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, SA 84084, Italy
| | - Giovanna Iannone
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, SA 84084, Italy
| | - Maria Giordano
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, SA 84084, Italy
| | - Álvaro González-Garcinuño
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caídos s/n, Salamanca, SA 37008, Spain; Institute of Biomedical Research, Hospital Virgen de la Vega, Paseo San Vicente 58-182, Salamanca, SA 37007, Spain
| | - Alejandro Jiménez
- GIR - QUESCAT, Department of Inorganic Chemistry, University of Salamanca, Plaza de los Caídos s/n, Salamanca, SA 37008, Spain
| | - Antonio Tabernero
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caídos s/n, Salamanca, SA 37008, Spain; Institute of Biomedical Research, Hospital Virgen de la Vega, Paseo San Vicente 58-182, Salamanca, SA 37007, Spain.
| | - Eva Martín Del Valle
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caídos s/n, Salamanca, SA 37008, Spain; Institute of Biomedical Research, Hospital Virgen de la Vega, Paseo San Vicente 58-182, Salamanca, SA 37007, Spain
| | - Iolanda De Marco
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, SA 84084, Italy; Research Centre for Biomaterials BIONAM, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, SA 84084, Italy.
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Validation of a compartmental model to predict drug release from porous structures produced by ScCO 2 techniques. Eur J Pharm Sci 2023; 180:106325. [PMID: 36351487 DOI: 10.1016/j.ejps.2022.106325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/02/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022]
Abstract
A global release model is proposed to study the drug release from porous materials for pharmaceutical applications. This model is defined by implementing a compartmental model where the release profile could be explained as the combination of mass transfer phenomena through three compartments as well as a desorption process or dissolution process from the support. This model was validated with five different systems produced with supercritical CO2 (aerogels, membranes, and fibers), showing different release processes. Numerical results indicate that this compartmental approach can be useful to determine adsorption and desorption constants as well as mass transfer resistances within the material. Likewise, this model can predict lag phases and imbibition phenomena. Therefore, the development of compartmental models can be an alternative to traditional models to successfully predict the drug profile of porous materials, achieving a complete understanding of the involved phenomena regardless of the material characteristics.
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Cagnini CZ, Dias AB, Vilas Boas MR, Batista FPR, Faria MGI, Glamočlija J, Soković M, Tešević V, Ferreira EDS, Colauto NB, Linde GA, Gazim ZC. Antimicrobial activity of Annona muricata leaf oleoresin. Nat Prod Res 2021; 36:4787-4793. [PMID: 34866508 DOI: 10.1080/14786419.2021.2011270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Bioactive compounds extracted from plants such as antimicrobials have attracted the attention of consumers and the food industry. This study aimed to determine the antimicrobial activity and chemical composition of Annona muricata leaf oleoresin obtained by supercritical CO2 extraction. The oleoresin was obtained by supercritical CO2 extraction and the chemical identification by gas chromatography coupled to mass spectrometry. Antimicrobial activity was evaluated by broth microdilution method against 14 foodborne fungi and bacteria. The oleoresin major chemical class was phytosterols (22.7%) and the major compounds were γ-sitosterol (15.7%), α-tocopherol (13.7%), phytol (13.1%), and hexadecanoic acid (11.5%). Minimum inhibitory concentration against bacteria ranged from 0.0025 to 0.010 mg mL-1. The oleoresin had high bactericidal activity against all bacteria, mainly Enterobacter cloacae and Pseudomonas aeruginosa with 0.005 mg mL-1 minimum bactericidal concentration. However, it had low fungicidal activity. The leaf oleoresin of A. muricata has promising applications in food, cosmetic, and pharmaceutical industries.
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Affiliation(s)
- Caroline Zanella Cagnini
- Graduate Program in Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil
| | - Angélica Barbosa Dias
- Graduate Program in Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil
| | | | | | | | - Jasmina Glamočlija
- Institute for Biological Research "Siniša Stankovic", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Marina Soković
- Institute for Biological Research "Siniša Stankovic", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Vele Tešević
- Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
| | | | - Nelson Barros Colauto
- Graduate Program in Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil.,Graduate Program in Food Science, School of Pharmacy, Federal University of Bahia, Salvador, Brazil
| | - Giani Andrea Linde
- Graduate Program in Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil.,Graduate Program in Food, Nutrition and Health, School of Nutrition, Federal University of Bahia, Salvador, Brazil
| | - Zilda Cristiani Gazim
- Graduate Program in Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil
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Biopesticide Encapsulation Using Supercritical CO 2: A Comprehensive Review and Potential Applications. Molecules 2021; 26:molecules26134003. [PMID: 34209179 PMCID: PMC8272144 DOI: 10.3390/molecules26134003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/27/2021] [Accepted: 06/28/2021] [Indexed: 01/06/2023] Open
Abstract
As an alternative to synthetic pesticides, natural chemistries from living organisms, are not harmful to nontarget organisms and the environment, can be used as biopesticides, nontarget. However, to reduce the reactivity of active ingredients, avoid undesired reactions, protect from physical stress, and control or lower the release rate, encapsulation processes can be applied to biopesticides. In this review, the advantages and disadvantages of the most common encapsulation processes for biopesticides are discussed. The use of supercritical fluid technology (SFT), mainly carbon dioxide (CO2), to encapsulate biopesticides is highlighted, as they reduce the use of organic solvents, have simpler separation processes, and achieve high-purity particles. This review also presents challenges to be surpassed and the lack of application of SFT for biopesticides in the published literature is discussed to evaluate its potential and prospects.
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