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Lüdtke FL, Fernandes JM, Gonçalves RFS, Martins JT, Berni P, Ribeiro APB, Vicente AA, Pinheiro AC. Performance of β-carotene-loaded nanostructured lipid carriers under dynamic in vitro digestion system: Influence of the emulsifier type. J Food Sci 2024. [PMID: 38767864 DOI: 10.1111/1750-3841.17113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 04/03/2024] [Accepted: 04/25/2024] [Indexed: 05/22/2024]
Abstract
A better understanding of how emulsifier type could differently influence the behavior of nanostructured lipid carriers (NLC) under the gastrointestinal digestion process, as well as at the cellular level, is of utmost importance for the NLC-based formulations' optimization and risk assessment in the food field. In this study, NLC composed by fully hydrogenated soybean and high-oleic sunflower oils were prepared using soy lecithin (NLC Lβ) or Tween 80 (NLC Tβ) as an emulsifier. β-Carotene was entrapped within NLC developed as a promising strategy to overcome β-carotene's low bioavailability and stability. The effect of emulsifier type on the digestibility of β-carotene-loaded NLC was evaluated using an in vitro dynamic digestion model mimicking peristalsis motion. The influence of β-carotene-loaded NLC on cell viability was assessed using Caco-2 cells in vitro. NLC Tβ remained stable in the gastric compartment, presenting particle size (PS) similar to the initial NLC (PS: 245.68 and 218.18 nm, respectively), while NLC Lβ showed lower stability (PS > 1000 nm) in stomach and duodenum phases. NLC Tβ also provided high β-carotene protection and delivery capacity (i.e., β-carotene bioaccessibility increased 10-fold). Based on the results of digestion studies, NLC Tβ has shown better physical stability during the passage through the in vitro dynamic gastrointestinal system than NLC Lβ. Moreover, the developed NLC did not compromise cell viability up to 25 µg/mL of β-carotene. Thus, the NLC developed proved to be a biocompatible structure and able to incorporate and protect β-carotene for further food applications. PRACTICAL APPLICATION: The findings of this study hold significant implications for industrial applications in terms of developing nanostructured lipid carriers from natural raw materials widely available and used to produce other lipid-based products in the food industry, as an alternative to synthetic ones. In this respect, the β-carotene-loaded NLC developed in this study would find a great industrial application in the food industry, which is in constant search to develop functional foods capable of increasing the bioavailability of bioactive compounds.
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Affiliation(s)
- Fernanda L Lüdtke
- Department of Food Engineering and Technology, Faculty of Food Engineering, University of Campinas, Campinas, Brazil
- CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal
- LABBELS - Associate Laboratory, Braga, Portugal
| | | | | | - Joana T Martins
- CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal
- LABBELS - Associate Laboratory, Braga, Portugal
| | - Paulo Berni
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, Brazil
| | - Ana P B Ribeiro
- Department of Food Engineering and Technology, Faculty of Food Engineering, University of Campinas, Campinas, Brazil
| | - Antonio A Vicente
- CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal
- LABBELS - Associate Laboratory, Braga, Portugal
| | - Ana C Pinheiro
- CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal
- LABBELS - Associate Laboratory, Braga, Portugal
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Gonçalves RFS, Fernandes JM, Martins JT, Vieira JM, Abreu CS, Gomes JR, Vicente AA, Pinheiro AC. Incorporation of curcumin-loaded solid lipid nanoparticles into yogurt: Tribo-rheological properties and dynamic in vitro digestion. Food Res Int 2024; 181:114112. [PMID: 38448111 DOI: 10.1016/j.foodres.2024.114112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 02/01/2024] [Accepted: 02/07/2024] [Indexed: 03/08/2024]
Abstract
The incorporation of nanostructures loaded with bioactive compounds into food matrices is a promising approach to develop new functional foods with improved nutritional, health profiles and good sensorial properties. The rheological and tribological properties of yogurt enriched with curcumin-loaded solid lipid nanoparticles (SLN) were evaluated. Also, the TCA solubility index, the bioaccessibility of curcumin and cell viability were assessed after dynamic in vitro digestion. The presence of SLN in yogurt did not affect its rheological properties; however, SLN addition increased the lubrication capability of yogurt. After in vitro digestion, yogurt with added SLN (yogurt_SLN) presented a lower TCA solubility index (22 %) than the plain yogurt (39 %). The bioaccessibility and stability of curcumin were statistically similar for yogurt_SLN (30 % and 42 %, respectively) and SLN alone (20 % and 39 %, respectively). Regarding cell viability results, the intestinal digesta filtrates of both controls (i.e., SLN alone and plain yogurt) did not affect significantly the cell viability, while the yogurt_SLN presented a possible cytotoxic effect at the concentrations tested. In general, the incorporation of SLN into yogurt seemed to promote the mouthfeel of the yogurt and did not adversely affect the bioaccessibility of curcumin. However, the interaction of SLN and yogurt matrix seemed to have a cytotoxic effect after in vitro digestion, which should be further investigated. Despite that, SLN has a high potential to be used as nanostructure in a functional food as a strategy to increase the bioactive compounds' bioaccessibility.
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Affiliation(s)
- Raquel F S Gonçalves
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Jean-Michel Fernandes
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Joana T Martins
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; LABBELS -Associate Laboratory, Braga/Guimarães, Portugal
| | - Jorge M Vieira
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; LABBELS -Associate Laboratory, Braga/Guimarães, Portugal
| | - Cristiano S Abreu
- LABBELS -Associate Laboratory, Braga/Guimarães, Portugal; Physics Dep., Polytechnic of Porto - School of Engineering, Portugal; CMEMS-UMinho - Center for Microelectromechanical Systems, University of Minho, 4800-058 Guimarães, Portugal
| | - José R Gomes
- LABBELS -Associate Laboratory, Braga/Guimarães, Portugal; CMEMS-UMinho - Center for Microelectromechanical Systems, University of Minho, 4800-058 Guimarães, Portugal
| | - António A Vicente
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; LABBELS -Associate Laboratory, Braga/Guimarães, Portugal
| | - Ana C Pinheiro
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; LABBELS -Associate Laboratory, Braga/Guimarães, Portugal.
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Marques F, Pereira F, Machado L, Martins JT, Pereira RN, Costa MM, Genisheva Z, Pereira H, Vicente AA, Teixeira JA, Geada P. Comparison of Different Pretreatment Processes Envisaging the Potential Use of Food Waste as Microalgae Substrate. Foods 2024; 13:1018. [PMID: 38611325 PMCID: PMC11011475 DOI: 10.3390/foods13071018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
A significant fraction of the food produced worldwide is currently lost or wasted throughout the supply chain, squandering natural and economic resources. Food waste valorization will be an important necessity in the coming years. This work investigates the ability of food waste to serve as a viable nutritional substrate for the heterotrophic growth of Chlorella vulgaris. The impact of different pretreatments on the elemental composition and microbial contamination of seven retail food waste mixtures was evaluated. Among the pretreatment methods applied to the food waste formulations, autoclaving was able to eliminate all microbial contamination and increase the availability of reducing sugars by 30%. Ohmic heating was also able to eliminate most of the contaminations in the food wastes in shorter time periods than autoclave. However, it has reduced the availability of reducing sugars, making it less preferable for microalgae heterotrophic cultivation. The direct utilization of food waste containing essential nutrients from fruits, vegetables, dairy and bakery products, and meat on the heterotrophic growth of microalgae allowed a biomass concentration of 2.2 × 108 cells·mL-1, being the culture able to consume more than 42% of the reducing sugars present in the substrate, thus demonstrating the economic and environmental potential of these wastes.
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Affiliation(s)
- Fabiana Marques
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; (F.M.); (F.P.); (L.M.); (J.T.M.); (R.N.P.); (J.A.T.); (P.G.)
| | - Francisco Pereira
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; (F.M.); (F.P.); (L.M.); (J.T.M.); (R.N.P.); (J.A.T.); (P.G.)
| | - Luís Machado
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; (F.M.); (F.P.); (L.M.); (J.T.M.); (R.N.P.); (J.A.T.); (P.G.)
| | - Joana T. Martins
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; (F.M.); (F.P.); (L.M.); (J.T.M.); (R.N.P.); (J.A.T.); (P.G.)
- LABBELS—Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - Ricardo N. Pereira
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; (F.M.); (F.P.); (L.M.); (J.T.M.); (R.N.P.); (J.A.T.); (P.G.)
- LABBELS—Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - Monya M. Costa
- GreenCoLab—Associação Oceano Verde, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; (M.M.C.); (H.P.)
| | | | - Hugo Pereira
- GreenCoLab—Associação Oceano Verde, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; (M.M.C.); (H.P.)
| | - António A. Vicente
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; (F.M.); (F.P.); (L.M.); (J.T.M.); (R.N.P.); (J.A.T.); (P.G.)
- LABBELS—Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - José A. Teixeira
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; (F.M.); (F.P.); (L.M.); (J.T.M.); (R.N.P.); (J.A.T.); (P.G.)
- LABBELS—Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - Pedro Geada
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; (F.M.); (F.P.); (L.M.); (J.T.M.); (R.N.P.); (J.A.T.); (P.G.)
- LABBELS—Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
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Roupar D, González A, Martins JT, Gonçalves DA, Teixeira JA, Botelho C, Nobre C. Modulation of Designed Gut Bacterial Communities by Prebiotics and the Impact of Their Metabolites on Intestinal Cells. Foods 2023; 12:4216. [PMID: 38231688 DOI: 10.3390/foods12234216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 01/19/2024] Open
Abstract
The impact of prebiotics on human health is associated with their capacity to modulate microbiota, improving beneficial microbiota-host interactions. Herein, the prebiotic potential of microbial-fructo-oligosaccharides (microbial-FOSs) produced by a co-culture of Aspergillus ibericus plus Saccharomyces cerevisiae was evaluated on seven- and nine-strain bacterial consortia (7SC and 9SC, respectively), designed to represent the human gut microbiota. The 7SC was composed of Bacteroides dorei, Bacteroides vulgatus, Bifidobacterium adolescentis, Bifidobacterium longum, Escherichia coli, Lactobacillus acidophilus, and Lactobacillus rhamnosus. The 9SC also comprised the aforementioned bacteria, with the addition of Bacteroides thetaiotaomicron and Roseburia faecis. The effect of microbial-FOSs on the metabolic activity of intestinal Caco-2/HT29-MTX-E12 co-culture was also assessed. The results showed that microbial-FOS selectively promoted the growth of probiotic bacteria and completely suppressed the growth of E. coli. The microbial-FOSs promoted the highest production rates of lactate and total short-chain fatty acids (SCFA) as compared to the commercial prebiotic Frutalose® OFP. Butyrate was only produced in the 9SC consortium, which included the R. faecis-a butyrate-producing bacteria. The inclusion of this bacteria plus another Bacteroides in the 9SC promoted a greater metabolic activity in the Caco-2/HT29-MTX-E12 co-culture. The microbial-FOSs showed potential as promising prebiotics as they selectively promote the growth of probiotic bacteria, producing high concentrations of SCFA, and stimulating the metabolic activity of gut cells.
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Affiliation(s)
- Dalila Roupar
- CEB-Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
| | - Abigail González
- CEB-Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
| | - Joana T Martins
- CEB-Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
- LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
| | - Daniela A Gonçalves
- CEB-Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
| | - José A Teixeira
- CEB-Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
- LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
| | - Cláudia Botelho
- CEB-Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
- LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
| | - Clarisse Nobre
- CEB-Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
- LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
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Mendes CG, Martins JT, Lüdtke FL, Geraldo A, Pereira A, Vicente AA, Vieira JM. Chitosan Coating Functionalized with Flaxseed Oil and Green Tea Extract as a Bio-Based Solution for Beef Preservation. Foods 2023; 12:foods12071447. [PMID: 37048269 PMCID: PMC10093991 DOI: 10.3390/foods12071447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/26/2023] [Accepted: 03/28/2023] [Indexed: 04/14/2023] Open
Abstract
Ecological and safe packaging solutions arise as pivotal points in the development of an integrated system for sustainable meat production. The aim of this study was to assess the effect of a combined chitosan (Ch) + green tea extract (GTE) + essential oil (thyme oil, TO; flaxseed oil, FO; or oregano oil, OO) coating on the safety and quality of vacuum-packaged beef during storage at 4 °C. An optimized bio-based coating formulation was selected (2% Ch + 2% GTE + 0.1% FO) to be applied to three fresh beef cuts (shoulder, Sh; knuckle, Kn; Striploin, St) based on its pH (5.8 ± 0.1), contact angle (22.3 ± 0.4°) and rheological parameters (viscosity = 0.05 Pa.s at shear rate > 20 s-1). Shelf-life analysis showed that the Ch-GTE-FO coating delayed lipid oxidation and reduced total viable counts (TVC) and Enterobacteriaceae growth compared with uncoated beef samples over five days. In addition, Ch-GTE-FO coating decreased total color changes of beef samples (e.g., ∆E* = 9.84 and 3.94, for non-coated and coated Kn samples, respectively) for up to five days. The original textural parameters (hardness, adhesiveness and springiness) of beef cuts were maintained during storage when Ch-GTE-FO coating was applied. Based on the physicochemical and microbial characterization results, the combination of the Ch-GTE-FO coating developed was effective in preserving the quality of fresh beef cuts during refrigerated storage along with vacuum packaging.
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Affiliation(s)
- Cíntia G Mendes
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
- LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
| | - Joana T Martins
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
- LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
| | - Fernanda L Lüdtke
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
- LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
| | - Ana Geraldo
- Mediterranean Institute for Agriculture, Environment and Development (MED), Institute for Advanced Studies and Research, University of Evora, 7006-554, Évora, Portugal
| | - Alfredo Pereira
- Mediterranean Institute for Agriculture, Environment and Development (MED), Institute for Advanced Studies and Research, University of Evora, 7006-554, Évora, Portugal
| | - António A Vicente
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
- LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
| | - Jorge M Vieira
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
- LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
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Roupar D, Berni P, Martins JT, Caetano AC, Teixeira JA, Nobre C. Bioengineering approaches to simulate human colon microbiome ecosystem. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.04.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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D'Angelo NA, Noronha MA, Kurnik IS, Câmara MCC, Vieira JM, Abrunhosa L, Martins JT, Alves TFR, Tundisi LL, Ataide JA, Costa JSR, Jozala AF, Nascimento LO, Mazzola PG, Chaud MV, Vicente AA, Lopes AM. Curcumin encapsulation in nanostructures for cancer therapy: A 10-year overview. Int J Pharm 2021; 604:120534. [PMID: 33781887 DOI: 10.1016/j.ijpharm.2021.120534] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/12/2021] [Accepted: 03/22/2021] [Indexed: 12/14/2022]
Abstract
Curcumin (CUR) is a phenolic compound present in some herbs, including Curcuma longa Linn. (turmeric rhizome), with a high bioactive capacity and characteristic yellow color. It is mainly used as a spice, although it has been found that CUR has interesting pharmaceutical properties, acting as a natural antioxidant, anti-inflammatory, antimicrobial, and antitumoral agent. Nonetheless, CUR is a hydrophobic compound with low water solubility, poor chemical stability, and fast metabolism, limiting its use as a pharmacological compound. Smart drug delivery systems (DDS) have been used to overcome its low bioavailability and improve its stability. The current work overviews the literature from the past 10 years on the encapsulation of CUR in nanostructured systems, such as micelles, liposomes, niosomes, nanoemulsions, hydrogels, and nanocomplexes, emphasizing its use and ability in cancer therapy. The studies highlighted in this review have shown that these nanoformulations achieved higher solubility, improved tumor cytotoxicity, prolonged CUR release, and reduced side effects, among other interesting advantages.
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Affiliation(s)
- Natália A D'Angelo
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Mariana A Noronha
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Isabelle S Kurnik
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
| | - Mayra C C Câmara
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Jorge M Vieira
- Centre of Biological Engineering (CEB), University of Minho, Braga, Portugal
| | - Luís Abrunhosa
- Centre of Biological Engineering (CEB), University of Minho, Braga, Portugal
| | - Joana T Martins
- Centre of Biological Engineering (CEB), University of Minho, Braga, Portugal
| | - Thais F R Alves
- Laboratory of Biomaterials and Nanotechnology (LaBNUS), University of Sorocaba, Sorocaba, Brazil; College of Engineering of Bioprocess and Biotechnology, University of Sorocaba, Sorocaba, Brazil; Sorocaba Development and Innovation Agency (INOVA Sorocaba), Sorocaba Technology Park, Sorocaba, Brazil
| | - Louise L Tundisi
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Janaína A Ataide
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Juliana S R Costa
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Angela F Jozala
- Laboratory of Industrial Microbiology and Fermentation Process (LAMINFE), University of Sorocaba, Sorocaba, Brazil
| | - Laura O Nascimento
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Priscila G Mazzola
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Marco V Chaud
- Laboratory of Biomaterials and Nanotechnology (LaBNUS), University of Sorocaba, Sorocaba, Brazil; College of Engineering of Bioprocess and Biotechnology, University of Sorocaba, Sorocaba, Brazil; Sorocaba Development and Innovation Agency (INOVA Sorocaba), Sorocaba Technology Park, Sorocaba, Brazil
| | - António A Vicente
- Centre of Biological Engineering (CEB), University of Minho, Braga, Portugal
| | - André M Lopes
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil.
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Gonçalves RFS, Martins JT, Abrunhosa L, Vicente AA, Pinheiro AC. Nanoemulsions for Enhancement of Curcumin Bioavailability and Their Safety Evaluation: Effect of Emulsifier Type. Nanomaterials (Basel) 2021; 11:nano11030815. [PMID: 33806777 PMCID: PMC8004751 DOI: 10.3390/nano11030815] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/14/2021] [Accepted: 03/18/2021] [Indexed: 12/02/2022]
Abstract
This work aimed at evaluating the effects of different emulsifiers on curcumin-loaded nanoemulsions’ behavior during digestion, its safety and absorption, to develop nanoemulsions that provide safety and improved curcumin functionality. Nanoemulsions (NEs) were produced using two bio-based (lecithin (LEC) and rhamnolipids (RHAM)) and one synthetic (Tween®80 (TWE)) emulsifier at similar concentrations. Different NEs were subjected to in vitro digestion. The cytotoxicity and permeability tests were performed in Caco-2 cells. NE_TWE were stable during all phases of in vitro digestion, whereas NE_LEC and NE_RHAM were found to be unstable from the gastric phase. NE_TWE showed 100% of free fatty acids released, followed by NE_RHAM and NE_LEC. Curcumin’s bioaccessibility and stability increased in the following order: NE_LEC > NE_RHAM > NE_TWE. NE_LEC and NE_TWE did not show cytotoxic effects in any of the concentrations tested, while NE_RHAM presented high cytotoxicity in all concentrations tested. The apparent permeability coefficients were determined for NE_LEC and NE_TWE; however, the results were not statistically different. These results showed that the emulsifier used has a high impact on nanoemulsions’ behavior under the digestion process and on their cytotoxicity. This work contributed to the state-of-the-art’s progress on the development of safer curcumin delivery systems with improved functionality, particularly regarding the proper selection of ingredients to produce said systems.
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Gonçalves RFS, Martins JT, Abrunhosa L, Baixinho J, Matias AA, Vicente AA, Pinheiro AC. Lipid-based nanostructures as a strategy to enhance curcumin bioaccessibility: Behavior under digestion and cytotoxicity assessment. Food Res Int 2021; 143:110278. [PMID: 33992378 DOI: 10.1016/j.foodres.2021.110278] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 02/18/2021] [Accepted: 02/26/2021] [Indexed: 10/21/2022]
Abstract
The aim of this study was to evaluate the behavior of different lipid-based nanostructures during in vitro digestion, in particular on curcumin's bioaccessibility, and to access their potential toxicity. Solid lipid nanoparticles (SLN), nanostructured lipid carriers (NLC) and nanoemulsions (NE) were submitted to harmonized static in vitro digestion and their cytotoxicity and cellular transport were evaluated using Caco-2 cell line. NE presented the highest curcumin's bioaccessibility followed by NLC and SLN, 71.1%, 63.7% and 53.3%, respectively. Free fatty acids percentage increased in the following order: NLC ≤ NE < SLN. Non-digested nanostructures and excipients presented no cytotoxicity; however, digested NE and NLC presented cytotoxicity due to MCT oil, which presented cytotoxicity after digestion. The apparent permeability coefficient of NLC was higher than SLN and NE. These results showed that lipid-based nanostructures' physical state and composition have a high influence on particles' behavior during digestion, and on their cytotoxicity/intestinal permeability, and highlights the importance of conducting cytotoxicity assessments after in vitro digestion. This work contributes to a better understanding of the behavior of lipid-based nanostructures under digestion/adsorption, and this knowledge will be useful in design of nanostructures that afford both safety and an increased bioactive compounds' bioavailability.
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Affiliation(s)
- Raquel F S Gonçalves
- CEB - Centre of Biological Engineering, University of Minho Campus de Gualtar, 4710-057 Braga, Portugal
| | - Joana T Martins
- CEB - Centre of Biological Engineering, University of Minho Campus de Gualtar, 4710-057 Braga, Portugal
| | - Luís Abrunhosa
- CEB - Centre of Biological Engineering, University of Minho Campus de Gualtar, 4710-057 Braga, Portugal
| | - João Baixinho
- IBET - Institute of Experimental Biology and Technology, Avenida da República, Quinta-do-Marquês, Estação Agronómica Nacional, Apartado 12, 2781-901 Oeiras, Portugal
| | - Ana A Matias
- IBET - Institute of Experimental Biology and Technology, Avenida da República, Quinta-do-Marquês, Estação Agronómica Nacional, Apartado 12, 2781-901 Oeiras, Portugal
| | - António A Vicente
- CEB - Centre of Biological Engineering, University of Minho Campus de Gualtar, 4710-057 Braga, Portugal
| | - Ana C Pinheiro
- CEB - Centre of Biological Engineering, University of Minho Campus de Gualtar, 4710-057 Braga, Portugal.
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Simões LS, Martins JT, Pinheiro AC, Vicente AA, Ramos OL. β-lactoglobulin micro- and nanostructures as bioactive compounds vehicle: In vitro studies. Food Res Int 2020; 131:108979. [DOI: 10.1016/j.foodres.2020.108979] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 11/25/2019] [Accepted: 01/03/2020] [Indexed: 01/01/2023]
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11
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Ellerin BE, Demandante CGN, Martins JT. Pure abscopal effect of radiotherapy in a salivary gland carcinoma: Case report, literature review, and a search for new approaches. Cancer Radiother 2020; 24:226-246. [PMID: 32192840 DOI: 10.1016/j.canrad.2020.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 01/15/2020] [Accepted: 01/21/2020] [Indexed: 12/12/2022]
Abstract
We report the case of an 84-year-old woman with poorly differentiated non-small cell carcinoma of the right parotid who presented with headache, was found to have a primary right parotid gland cancer as well as metastatic disease, and underwent palliative radiotherapy to the primary site. The patient received no chemotherapy or immunotherapy, but both the primary site and several non-irradiated foci in the lungs regressed or completely resolved. The patient remained free of disease for about one year before progression. The case is a rare instance of abscopal regression of metastatic disease in the absence of pharmacologic immunomodulation. A literature review surveys the history of the abscopal effect of radiation therapy, attempts to understand the mechanisms of its successes and failures, and points to new approaches that can inform and improve the outcomes of radioimmunotherapy.
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Affiliation(s)
| | | | - J T Martins
- UT Health HOPE Cancer Center, Tyler, TX 75701, USA
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12
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Nunes R, Pereira BD, Cerqueira MA, Silva P, Pastrana LM, Vicente AA, Martins JT, Bourbon AI. Lactoferrin-based nanoemulsions to improve the physical and chemical stability of omega-3 fatty acids. Food Funct 2020; 11:1966-1981. [DOI: 10.1039/c9fo02307k] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Omega-3 (ω-3) polyunsaturated fatty acids are highly susceptible to oxidation and have an intense odour and poor water solubility, which make their direct applications in foods extremely difficult.
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Affiliation(s)
- Rafaela Nunes
- Centre of Biological Engineering
- University of Minho
- Braga
- Portugal
| | - Beatriz D'Avó Pereira
- Centre of Biological Engineering
- University of Minho
- Braga
- Portugal
- International Iberian Nanotechnology Laboratory
| | | | - Pedro Silva
- Centre of Biological Engineering
- University of Minho
- Braga
- Portugal
| | | | | | - Joana T. Martins
- Centre of Biological Engineering
- University of Minho
- Braga
- Portugal
| | - Ana I. Bourbon
- International Iberian Nanotechnology Laboratory
- Braga
- Portugal
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13
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Tibolla H, Pelissari FM, Martins JT, Lanzoni EM, Vicente AA, Menegalli FC, Cunha RL. Banana starch nanocomposite with cellulose nanofibers isolated from banana peel by enzymatic treatment: In vitro cytotoxicity assessment. Carbohydr Polym 2018; 207:169-179. [PMID: 30599996 DOI: 10.1016/j.carbpol.2018.11.079] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 11/20/2018] [Accepted: 11/23/2018] [Indexed: 10/27/2022]
Abstract
The potential use of cellulose nanofibers (CNFs) as a reinforcing agent in banana starch-based nanocomposite films was investigated. CNFs were isolated from banana peel (Musa paradisiaca) by enzymatic hydrolysis. Banana starch-based nanocomposite films were prepared with CNFs using the casting method. CNFs effect on cell viability and on nanocomposite films properties' was investigated. The cytotoxicity of CNFs was assessed on Caco-2 cell line. CNFs were not cytotoxic at 50-2000 μg/mL. However, CNFs above 2000 μg/mL significantly decreased cell viability. Topography analysis showed that the incorporation of CNFs modified the film structure. The nanocomposites exhibited a complex structure due to strong interactions between CNFs and starch matrix, promoting a remarkable improvement on mechanical and water barrier properties, opacity and UV light barrier compared to the control film. CNFs can offer a great potential as reinforcing material for starch-based nanocomposite films, producing a value-added food packaging from a waste material.
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Affiliation(s)
- H Tibolla
- Department of Food Engineering, School of Food Engineering, University of Campinas, Campinas, SP, CEP 13083-862, Brazil.
| | - F M Pelissari
- Institute of Science and Technology, Food Engineering, University of Jequitinhonha and Mucuri, Diamantina, MG, CEP 39100-000, Brazil
| | - J T Martins
- CEB - Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal
| | - E M Lanzoni
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970, Campinas, SP, Brazil; São Paulo State University (UNESP), Institute of Science and Technology, Sorocaba, Brazil
| | - A A Vicente
- CEB - Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal
| | - F C Menegalli
- Department of Food Engineering, School of Food Engineering, University of Campinas, Campinas, SP, CEP 13083-862, Brazil
| | - R L Cunha
- Department of Food Engineering, School of Food Engineering, University of Campinas, Campinas, SP, CEP 13083-862, Brazil
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14
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Martins JT, Bourbon AI, Pinheiro AC, Fasolin LH, Vicente AA. Protein-Based Structures for Food Applications: From Macro to Nanoscale. Front Sustain Food Syst 2018. [DOI: 10.3389/fsufs.2018.00077] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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15
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Pereira RN, Rodrigues RM, Ramos ÓL, Pinheiro AC, Martins JT, Teixeira JA, Vicente AA. Electric Field Processing: Novel Perspectives on Allergenicity of Milk Proteins. J Agric Food Chem 2018; 66:11227-11233. [PMID: 30296069 DOI: 10.1021/acs.jafc.8b03689] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Milk proteins are being widely used in formulated foods as a result of their excellent technological, functional, and biological properties. However, the most representative proteins from casein and whey fractions are also recognized as major allergens and responsible for the prevalence of cow's milk protein allergy in childhood. Electroheating technologies based on thermal processing of food as a result of application of moderate electric fields, also known by ohmic heating (OH) or Joule effect, are establishing a solid foothold in the food industry. Currently, the influence of OH on allergenic aspects of milk proteins is under debate but still undisclosed. The occurrence of electrical effects on the protein structure and its function has already been reported; thus, the impact of OH over allergenicity should not be overlooked. On the basis of these recent findings, it is then relevant to speculate about the impact of this emergent technology on the potential allergenicity of milk proteins.
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Affiliation(s)
- Ricardo N Pereira
- Centre of Biological Engineering (CEB) , University of Minho , 4710-057 Braga , Portugal
| | - Rui M Rodrigues
- Centre of Biological Engineering (CEB) , University of Minho , 4710-057 Braga , Portugal
| | - Óscar L Ramos
- Centre of Biological Engineering (CEB) , University of Minho , 4710-057 Braga , Portugal
| | - Ana C Pinheiro
- Centre of Biological Engineering (CEB) , University of Minho , 4710-057 Braga , Portugal
- Institute of Experimental and Technological Biology (iBET) , Avenida da República, Quinta do Marquês, Estação Agronómica Nacional, Apartado 12 , 2781-901 Oeiras , Portugal
| | - Joana T Martins
- Centre of Biological Engineering (CEB) , University of Minho , 4710-057 Braga , Portugal
| | - José A Teixeira
- Centre of Biological Engineering (CEB) , University of Minho , 4710-057 Braga , Portugal
| | - António A Vicente
- Centre of Biological Engineering (CEB) , University of Minho , 4710-057 Braga , Portugal
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16
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Coelho LM, Silva PM, Martins JT, Pinheiro AC, Vicente AA. Emerging opportunities in exploring the nutritional/functional value of amaranth. Food Funct 2018; 9:5499-5512. [DOI: 10.1039/c8fo01422a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Amaranthusspp. is a highly nutritive pseudocereal, rich in macronutrients and micronutrients, including vitamins and minerals.
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Affiliation(s)
| | - Pedro Miguel Silva
- CEB – Centre of Biological Engineering
- University of Minho
- 4710-057 Braga
- Portugal
| | - Joana T. Martins
- CEB – Centre of Biological Engineering
- University of Minho
- 4710-057 Braga
- Portugal
| | - Ana C. Pinheiro
- CEB – Centre of Biological Engineering
- University of Minho
- 4710-057 Braga
- Portugal
- Instituto de Biologia Experimental e Tecnológica
| | - António A. Vicente
- CEB – Centre of Biological Engineering
- University of Minho
- 4710-057 Braga
- Portugal
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17
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Martins JT, Santos SF, Bourbon AI, Pinheiro AC, González-Fernández Á, Pastrana LM, Cerqueira MA, Vicente AA. Lactoferrin-based nanoparticles as a vehicle for iron in food applications – Development and release profile. Food Res Int 2016; 90:16-24. [DOI: 10.1016/j.foodres.2016.10.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 10/14/2016] [Accepted: 10/16/2016] [Indexed: 12/20/2022]
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18
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Martins JT, Ramos ÓL, Pinheiro AC, Bourbon AI, Silva HD, Rivera MC, Cerqueira MA, Pastrana L, Malcata FX, González-Fernández Á, Vicente AA. Edible Bio-Based Nanostructures: Delivery, Absorption and Potential Toxicity. Food Eng Rev 2015. [DOI: 10.1007/s12393-015-9116-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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19
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Martins JT, Cerqueira MA, Bourbon AI, Pinheiro AC, Souza BW, Vicente AA. Synergistic effects between κ-carrageenan and locust bean gum on physicochemical properties of edible films made thereof. Food Hydrocoll 2012. [DOI: 10.1016/j.foodhyd.2012.03.004] [Citation(s) in RCA: 216] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Souza BW, Cerqueira MA, Bourbon AI, Pinheiro AC, Martins JT, Teixeira JA, Coimbra MA, Vicente AA. Chemical characterization and antioxidant activity of sulfated polysaccharide from the red seaweed Gracilaria birdiae. Food Hydrocoll 2012. [DOI: 10.1016/j.foodhyd.2011.10.005] [Citation(s) in RCA: 270] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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22
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Souza BWS, Cerqueira MA, Martins JT, Quintas MAC, Ferreira ACS, Teixeira JA, Vicente AA. Antioxidant potential of two red seaweeds from the Brazilian coasts. J Agric Food Chem 2011; 59:5589-5594. [PMID: 21491929 DOI: 10.1021/jf200999n] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this work, in vitro antioxidant activity of two Brazilian red seaweeds, Gracilaria birdiae and Gracilaria cornea, was characterized. The total phenolic content, the radical-scavenging activity and the antioxidant activity were determined in two solvent extracts of the algae. Liquid chromatography-mass spectrometry (LC-MS/MS) allowed identification of important antioxidant compounds. The ethanol extract of G. birdiae was found to have the highest value of total phenolic content: 1.13 mg of gallic acid equiv (GAE)/g of extract. The radical-scavenging activity of G. birdiae and G. cornea extracts has been evaluated at different extract concentrations; the IC(50) values of ethanolic extracts of G. cornea and G. birdiae were 0.77 and 0.76 mg mL(-1), respectively, while for methanolic extracts, the IC(50) values of G. cornea and G. birdiae were 0.86 and 0.76 mg mL(-1), respectively. The antioxidant activities of these two seaweeds' extracts as assessed by the β-carotene-linoleic acid assay were equally high, achieving values of β-carotene oxidation inhibition of up to 40%. Finally, in the methanolic extracts, LC-MS/MS allowed identification in both algae of two important antioxidants: apigenin and gallic acid.
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Affiliation(s)
- Bartolomeu W S Souza
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Braga, Portugal
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23
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Souza BWS, Cerqueira MA, Ruiz HA, Martins JT, Casariego A, Teixeira JA, Vicente AA. Effect of chitosan-based coatings on the shelf life of salmon (Salmo salar). J Agric Food Chem 2010; 58:11456-11462. [PMID: 20936790 DOI: 10.1021/jf102366k] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This study aimed at determining the effect of chitosan coating on shelf life extension of salmon ( Salmo salar ) fillets. The success of edible coatings depends highly on their effective wetting capacity of the surfaces on which they are applied. In this context in a first stage the surface properties of salmon fillets and the wetting capacity of the coatings on fish were evaluated. In terms of wettability there were no significant differences (p > 0.05) between the solutions presenting higher values (solutions 1-4); therefore, solution 1 with a spreading coefficient (Ws) of -4.73 mN m(-1), was chosen to be subsequently analyzed and applied on fish fillets. For shelf life analyses the fillets were coated and stored at 0 °C for 18 days. The control and coated fish samples were analyzed periodically for total aerobic plate count (TPC), pH, total volatile base nitrogen (TVB-N), trimethylamine (TMA), thiobarbituric acid (TBA), and ATP breakdown products (K value). The results showed that fish samples coated with chitosan presented a significant reduction (p < 0.05) for pH and K value after 6 days and for TVB, TMA, and TBA values after 9 days of storage, when compared to control samples. In terms of microbial growth, a slower increase in TPC was observed for the coated fish, indicating that chitosan-based coatings were effective in extending for an additional 3 days the shelf life of the salmon. These results demonstrate that chitosan-based coatings may be an alternative for extending the shelf life of salmon fillets during storage at 0 °C.
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Affiliation(s)
- Bartolomeu W S Souza
- IBB - Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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Cerqueira MA, Souza BW, Martins JT, Teixeira JA, Vicente AA. Seed extracts of Gleditsia triacanthos: Functional properties evaluation and incorporation into galactomannan films. Food Res Int 2010. [DOI: 10.1016/j.foodres.2010.06.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Martins JT, Cerqueira MA, Souza BWS, Carmo Avides MD, Vicente AA. Shelf life extension of ricotta cheese using coatings of galactomannans from nonconventional sources incorporating nisin against Listeria monocytogenes. J Agric Food Chem 2010; 58:1884-1891. [PMID: 20085273 DOI: 10.1021/jf902774z] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Shelf life extension of Ricotta cheese was evaluated at 4 degrees C upon the use of edible coatings made of galactomannans from Gleditsia triacanthos incorporating nisin against Listeria monocytogenes. Three different treatments were tested in cheese: samples without coating; samples with coating without nisin; and samples with coating containing 50 IU x g(-1) of nisin. To test the effectiveness of the treatments against L. monocytogenes, the surface of the cheese was inoculated with a suspension of the microorganism. Microbiological and physical-chemical analyses of the cheese samples were performed during 28 days. Results showed that the cheese coated with nisin-added galactomannan film was the treatment presenting the best results in terms of microbial growth delay (p < 0.05). The addition of nisin also affects (p < 0.05) the physical and mechanical properties of the films: O(2) permeability decreased from 1.84 to 1.35 x 10(-12) cm(3) x (Pa x s x m)(-1); CO(2) permeability increased from 1.96 to 6.31 x 10(-12) cm(3).(Pa x s x m)(-1); opacity increased from 3.68 to 4.59%; tensile strength ranged from 0.84 to 1.46 MPa; and elongation at break improved from 50.93 to 68.16%. These results demonstrate that novel galactomannan-based edible coatings, when combined with nisin, may provide consumer-friendly alternatives to reduce L. monocytogenes postcontamination on cheese products during storage.
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Affiliation(s)
- Joana T Martins
- Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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Bordin S, Martins JT, Gonçalves MS, Melo MB, Saad ST, Costa FF. Haplotype analysis and Agamma gene polymorphism associated with the Brazilian type of hereditary persistence of fetal hemoglobin. Am J Hematol 1998; 58:49-54. [PMID: 9590149 DOI: 10.1002/(sici)1096-8652(199805)58:1<49::aid-ajh9>3.0.co;2-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We have identified three unrelated individuals and three members of a family with the non-deletion form of Agamma-hereditary persistence of fetal hemoglobin (HPFH). Molecular analysis showed that each individual is a heterozygote for a previously described -195 Agamma (C-->G) mutation. The beta-globin gene cluster was studied using the polymerase chain reaction and related techniques. Haplotyping using nine restriction sites identified two closely related chromosomes with the -195Agamma mutation, differing only in a single site 3' to the beta-globin gene. Further analysis of beta-globin framework indicated that the HPFH allele segregates with haplotype V, according to Orkin's classification. The second haplotype probably originated by a point mutation or DNA rearrangement of a pre-existing -195Agamma chromosome. We also determined the sequences from -622 to +55 bp upstream to the Agamma gene and part of the Agamma IVS-2. We found four polymorphisms associated to the -195Agamma promoter region. All -195Agamma chromosomes had a G at positions -588 and +25 relative to the Agamma gene. One individual was also homozygous for polymorphisms at -398 (G-->A), and another at -369 (C-->G). Cloning and sequencing of the polymorphic patterns of the 3' region of Agamma IVS-2 showed that the mutated allele is linked to beta-globin chromosome B. Some correlations between chromosome characteristics and Agamma point mutations were also observed.
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Affiliation(s)
- S Bordin
- Centro de Hematologia e Hemoterapia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, São Paulo, Brazil
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Martins JT, Li DJ, Baskin LB, Jialal I, Keffer JH. Comparison of cardiac troponin I and lactate dehydrogenase isoenzymes for the late diagnosis of myocardial injury. Am J Clin Pathol 1996; 106:705-8. [PMID: 8980345 DOI: 10.1093/ajcp/106.6.705] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Cardiac troponin I (cTnI) is a highly specific marker that is elevated in the blood for several days following myocardial infarction. The lactate dehydrogenase (LD) isoenzyme 1 to isoenzyme 2 ratio (LD1/LD2) is the established marker for the late diagnosis of myocardial infarction. In this study, the sensitivity of cardiac troponin I (cTnI) and LD1/LD2 were compared as late markers of myocardial injury over a 5-day period in 36 patients admitted with a diagnosis of myocardial infarction to the coronary care unit. Over this period, the sensitivity of cTnI was significantly greater than that of LD1/LD2 (P < .05). The concurrent elevation of both cardiac markers of the five day period range from 53.1% to 79.4%. However, this low concordance was largely due to an LD1/LD2 < 1 in the presence of an increased cTnI. The average discordance over the 5-day period was 29.5%. Because cardiac troponin I (cTnI) has greater sensitivity than lactate dehydrogenase isoenzymes for delayed diagnosis of myocardial injury and is a more cost-effective test, the authors recommend it as a test of choice in this setting.
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Affiliation(s)
- J T Martins
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas 75235-9052, USA
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