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Rondan FS, Pisarek P, Godin S, Szpunar J, Mesko MF. Characterization of halogen species in seaweeds from the Antarctic using a multi-technique approach. J Trace Elem Med Biol 2024; 83:127396. [PMID: 38242005 DOI: 10.1016/j.jtemb.2024.127396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 12/28/2023] [Accepted: 01/12/2024] [Indexed: 01/21/2024]
Abstract
BACKGROUND Despite the recognized importance, the determination of halogens in Antarctic seaweeds remains understudied. Limited research exists due to challenges associated with sample preparation, and reliable analytical techniques for this type of analysis. Therefore, further investigations are necessary to bridge this knowledge gap and gain a comprehensive understanding of halogen metabolism in Antarctic seaweeds. METHODS In this study, seaweeds from the coast of the Antarctic continent were characterized concerning the total content of halogens and their species. For this purpose, different sample preparation methods, based on extraction and combustion, combining highly selective and sensitive chromatographic and spectrometric multi-technique approaches were used. RESULTS By using optimized methods, it was possible to determine total halogens content, the distribution of bromine and iodine in different classes of species (lipids, water-soluble, proteins, carbohydrates, and residue), as well as the identification of iodinated amino acids (MIT and DIT) in ten brown and red seaweeds. Bromate and iodate were not detected in the samples, which presented only bromide and iodide species in their composition. Additionally, unknown bromine and iodine species were observed in different extracts evaluated. Furthermore, 25 halogenated polyphenols were identified in seaweeds, of which only four were already reported in the literature. CONCLUSION The results obtained in this study comprise unprecedented data in the literature on species of halogens present in seaweeds from the Antarctic environment.
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Affiliation(s)
- Filipe Soares Rondan
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, 96160-000 Capão do Leão, RS, Brazil; Universite de Pau, E2S UPPA, CNRS, IPREM-UMR5254, Hélioparc, 2, av. Angot, 64053 Pau, France
| | - Paulina Pisarek
- Universite de Pau, E2S UPPA, CNRS, IPREM-UMR5254, Hélioparc, 2, av. Angot, 64053 Pau, France
| | - Simon Godin
- Universite de Pau, E2S UPPA, CNRS, IPREM-UMR5254, Hélioparc, 2, av. Angot, 64053 Pau, France
| | - Joanna Szpunar
- Universite de Pau, E2S UPPA, CNRS, IPREM-UMR5254, Hélioparc, 2, av. Angot, 64053 Pau, France.
| | - Marcia Foster Mesko
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, 96160-000 Capão do Leão, RS, Brazil.
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Şensu E, Ayar EN, Okudan EŞ, Özçelik B, Yücetepe A. Characterization of Proteins Extracted from Ulva sp., Padina sp., and Laurencia sp. Macroalgae Using Green Technology: Effect of In Vitro Digestion on Antioxidant and ACE-I Inhibitory Activity. ACS OMEGA 2023; 8:48689-48703. [PMID: 38162757 PMCID: PMC10753567 DOI: 10.1021/acsomega.3c05041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 08/25/2023] [Indexed: 01/03/2024]
Abstract
Macroalgal proteins were extracted from Ulva rigida (URPE) (green), Padina pavonica (PPPE) (brown), and Laurencia obtusa (LOPE) (red) using ultrasound-assisted enzymatic extraction, which is one of the green extraction technologies. Techno-functional, characteristic, and digestibility properties, and biological activities including antioxidant (AOA) and angiotensin-I converting enzyme (ACE-I) inhibitory activities were also investigated. According to the results, the extraction yield (EY) (94.74%) was detected in the extraction of L. obtusa, followed by U. rigida and P. pavonica. PPPE showed the highest ACE-I inhibitory activity before in vitro digestion. In contrast to PPPE, LOPE (20.90 ± 0.00%) and URPE (20.20 ± 0.00%) showed higher ACE-I inhibitory activity after in vitro digestion. The highest total phenolic content (TPC) (77.86 ± 1.00 mg GAE/g) was determined in LOPE. On the other hand, the highest AOACUPRAC (74.69 ± 1.78 mg TE/g) and AOAABTS (251.29 ± 5.0 mg TE/g) were detected in PPPE. After in vitro digestion, LOPE had the highest TPC (22.11 ± 2.18 mg GAE/g), AOACUPRAC (8.41 ± 0.06 mg TE/g), and AOAABTS (88.32 ± 0.65 mg TE/g) (p < 0.05). In vitro protein digestibility of three macroalgal protein extracts ranged from 84.35 ± 2.01% to 94.09 ± 0.00% (p < 0.05). Three macroalgae showed high oil holding capacity (OHC), especially PPPE (410.13 ± 16.37%) (p < 0.05), but they showed minimum foaming and emulsifying properties. The quality of the extracted macroalgal proteins was assessed using FTIR, SDS-PAGE, and DSC analyses. According to our findings, the method applied for macroalgal protein extraction could have a potential the promise of ultrasonication application as an environmentally friendly technology for food industry. Moreover, URPE, PPPE, and LOPE from sustainable sources may be attractive in terms of nourishment for people because of their digestibility, antioxidant properties, and ACE-I inhibitory activities.
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Affiliation(s)
- Eda Şensu
- Department
of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak TR-34469, Istanbul, Turkey
- Department
of Food Technology, Istanbul Gelisim Higher Vocational School, Istanbul Gelisim
University, Avcılar, Istanbul 34310, Turkey
| | - Eda Nur Ayar
- Department
of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak TR-34469, Istanbul, Turkey
| | | | - Beraat Özçelik
- Department
of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak TR-34469, Istanbul, Turkey
- BIOACTIVE
Research & Innovation Food Manufac. Indust. Trade Ltd., Katar Street, Teknokent ARI-3, B110, Sarıyer 34467, Istanbul, Turkey
| | - Aysun Yücetepe
- Department
of Food Engineering, Faculty of Engineering, Aksaray University, TR-68100 Aksaray, Turkey
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Aakre I, Tveit IB, Myrmel LS, Fjære E, Ballance S, Rosendal‐Riise H. Bioavailability of iodine from a meal consisting of sushi and a wakame seaweed salad-A randomized crossover trial. Food Sci Nutr 2023; 11:7707-7717. [PMID: 38107121 PMCID: PMC10724604 DOI: 10.1002/fsn3.3689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 08/28/2023] [Accepted: 08/31/2023] [Indexed: 12/19/2023] Open
Abstract
The consumption of seaweed is on the rise in the Western world. Seaweeds may contain substantial amounts of iodine, and some species could serve as a potential dietary iodine source. However, limited data on the iodine content and in vivo bioavailability of iodine from seaweeds exist. The objective was to assess whether iodine from a meal consisting of sushi with nori, (Porphyra spp) and a wakame seaweed salad (Undaria pinnatifida) had similar bioavailability as a potassium iodide reference supplement of similar iodine content. A randomized 2 × 2 crossover trial (AB/BA model) was conducted in 20 healthy young women. One intervention arm consisted of a meal with sushi and wakame salad (231 μg iodine), and the other of potassium iodide (KI) supplement (225 μg iodine). Urinary iodine concentration (UIC) was measured at 11 different time points for 48 h after the interventions. The UIC increased after consumption of both the sushi and wakame meal and the KI supplement, but the median UIC was higher after ingestion of the KI supplement. The estimated bioavailability of iodine during the first 24 h was 75% from sushi with wakame and 97% from the KI supplement. The bioequivalence analyses confirmed that the KI supplement had higher estimated bioavailability than the sushi and wakame meal, however, with small margins. Our findings on iodine bioavailability imply that sushi and wakame could be potential iodine sources in the diet, which may be favorable for population groups at risk for iodine deficiency. However, further research is needed to account for the variability of iodine content in seaweeds by different locations and degree of processing, to assure that the iodine levels are stable and predictable for the consumers.
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Affiliation(s)
- Inger Aakre
- Marine ToxicologyInstitute of Marine ResearchBergenNorway
| | | | | | - Even Fjære
- Feed and NutritionInstitute of Marine ResearchBergenNorway
| | - Simon Ballance
- Nofima ASNorwegian Institute of Food, Fisheries and Aquaculture ResearchÅsNorway
| | - Hanne Rosendal‐Riise
- Mohn Nutrition Research Laboratory and Center for Nutrition, Department of Clinical MedicineUniversity of BergenBergenNorway
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Le Guillard C, Bergé JP, Donnay-Moreno C, Cornet J, Ragon JY, Fleurence J, Dumay J. Optimization of R-Phycoerythrin Extraction by Ultrasound-Assisted Enzymatic Hydrolysis: A Comprehensive Study on the Wet Seaweed Grateloupia turuturu. Mar Drugs 2023; 21:md21040213. [PMID: 37103353 PMCID: PMC10146196 DOI: 10.3390/md21040213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/17/2023] [Accepted: 03/23/2023] [Indexed: 03/30/2023] Open
Abstract
Enzyme-assisted extraction (EAE) and ultrasound-assisted extraction (UAE) are both recognized as sustainable processes, but little has been done on the combined process known as ultrasound-assisted enzymatic hydrolysis (UAEH), and even less on seaweed. The present study aimed to optimize the UAEH of the red seaweed Grateloupia turuturu for the extraction of R-phycoerythrin (R-PE) directly from the wet biomass by applying a response surface methodology based on a central composite design. Three parameters were studied: the power of ultrasound, the temperature and the flow rate in the experimental system. Data analysis demonstrated that only the temperature had a significant and negative effect on the R-PE extraction yield. Under the optimized conditions, the R-PE kinetic yield reached a plateau between 90 and 210 min, with a yield of 4.28 ± 0.09 mg·g−1 dry weight (dw) at 180 min, corresponding to a yield 2.3 times higher than with the conventional phosphate buffer extraction on freeze-dried G. turuturu. Furthermore, the increased release of R-PE, carbohydrates, carbon and nitrogen can be associated with the degradation of G. turuturu constitutive polysaccharides, as their average molecular weights had been divided by 2.2 in 210 min. Our results thus demonstrated that an optimized UAEH is an efficient method to extract R-PE from wet G. turuturu without the need for expensive pre-treatment steps found in the conventional extraction. UAEH represents a promising and sustainable approach that should be investigated on biomasses where the recovery of added-value compounds needs to be improved.
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Affiliation(s)
- Cécile Le Guillard
- IFREMER Centre Ifremer Atlantique, EM3B, BP 21105, CEDEX 03, 44311 Nantes, France
- Institut des Substances et Organismes de la Mer, ISOMER, Nantes Université, UR 2160, 44000 Nantes, France
- Correspondence: or (C.L.G.); (J.D.)
| | | | - Claire Donnay-Moreno
- IFREMER Centre Ifremer Atlantique, EM3B, BP 21105, CEDEX 03, 44311 Nantes, France
| | - Josiane Cornet
- IFREMER Centre Ifremer Atlantique, EM3B, BP 21105, CEDEX 03, 44311 Nantes, France
| | - Jean-Yves Ragon
- IFREMER Centre Ifremer Atlantique, EM3B, BP 21105, CEDEX 03, 44311 Nantes, France
| | - Joël Fleurence
- Institut des Substances et Organismes de la Mer, ISOMER, Nantes Université, UR 2160, 44000 Nantes, France
| | - Justine Dumay
- Institut des Substances et Organismes de la Mer, ISOMER, Nantes Université, UR 2160, 44000 Nantes, France
- Correspondence: or (C.L.G.); (J.D.)
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Blikra MJ, Henjum S, Aakre I. Iodine from brown algae in human nutrition, with an emphasis on bioaccessibility, bioavailability, chemistry, and effects of processing: A systematic review. Compr Rev Food Sci Food Saf 2022; 21:1517-1536. [PMID: 35233943 DOI: 10.1111/1541-4337.12918] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 01/03/2022] [Accepted: 01/04/2022] [Indexed: 11/29/2022]
Abstract
Brown algae are becoming increasingly popular as a food source and dietary supplement in Europe and other Western countries. As they are highly rich in iodine, they represent a potential new dietary iodine source. Iodine deficiency has been re-emerging in Europe, and it is important to ensure adequate intake through one's diet. However, macroalgae, and especially brown algae, may contain very high amounts of iodine, and both iodine deficiency and excessive iodine may increase the risk of negative health effects. The iodine content of algae or foods containing algae is currently not regulated in the European Union. The aim of this paper is to review the literature to determine the chemical species of iodine in brown algae, the loss of iodine during processing, and the bioavailability and bioaccessibility of iodine. A systematic search of the literature was performed in April 2021, via the databases Web of Science and PubMed. The review includes studies of iodine in brown macroalgae in relation to bioavailability, bioaccessibility, processing and speciation. A meta-analysis was conducted in relation to the following topics: (i) the correlation between total iodine and iodide (I- ) content in brown algae; (ii) the correlation between the loss of iodine during processing and the I- content; and (iii) the correlation between bioavailability and the I- content. The bioavailability of iodine from brown algae was generally high, with in vivo bioavailability ranging from 31% to 90%. The in vitro bioavailability of iodine (2%-28%) was systematically lower than in vivo bioavailability (31%-90%), indicating an inadequate in vitro methodology. Processing may reduce the iodine content of brown algae, and a higher I- content was positively correlated with increased iodine loss during processing. Although processing strategies may reduce the iodine content of brown algae significantly, the iodine content may still be high after processing. These findings may be used in food safety evaluations of brown algae as well as in the development of macroalgae-containing foods with iodine contents suitable for human consumption. Further research on processing techniques to reduce the iodine content in brown macroalgae are warranted.
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Affiliation(s)
| | - Sigrun Henjum
- Department of Nursing and Health Promotion, Oslo Metropolitan University (OsloMet), Oslo, Norway
| | - Inger Aakre
- Department of Seafood and Nutrition, Institute of Marine Research, Bergen, Norway
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Ma W, Yang B, Li J, Li X. Development of a Simple, Underivatized Method for Rapid Determination of Free Amino Acids in Honey Using Dilute-and-Shoot Strategy and Liquid Chromatography-Tandem Mass Spectrometry. Molecules 2022; 27:molecules27031056. [PMID: 35164320 PMCID: PMC8838828 DOI: 10.3390/molecules27031056] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 01/29/2022] [Accepted: 02/01/2022] [Indexed: 12/20/2022] Open
Abstract
A simple, fast and reliable analytical method was developed for 20 free amino acids (FAAs) determination in honey samples through a dilute-and-shoot strategy and hydrophilic interaction liquid chromatography tandem mass spectrometry. Compared with previous reports, direct dilution by water has significantly reduced the matrix effect and facilitated full extraction of FAAs. Further, a 5 min determination method was established with an acetonitrile–water mobile phase system with 0.1% formic acid addition. The established method was validated and demonstrated several advantages including short detection time, wide linear range over 3–4 orders of magnitude, high sensitivity down to 0.1 ng/mL and negligible matrix effect. Twenty FAAs were determined in 10 honey samples from different botanical origins by this method, and 19 FAAs were found. This general applicable method was also promising for fast determination of FAAs in other practical samples.
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Affiliation(s)
- Wen Ma
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China; (W.M.); (J.L.)
| | - Bingxin Yang
- Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, Division of Metrology in Chemistry, National Institute of Metrology, Beijing 100029, China;
| | - Jun Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China; (W.M.); (J.L.)
| | - Xianjiang Li
- Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, Division of Metrology in Chemistry, National Institute of Metrology, Beijing 100029, China;
- Correspondence: ; Tel.: +86-10-64524737
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Applying Seaweed Compounds in Cosmetics, Cosmeceuticals and Nutricosmetics. Mar Drugs 2021; 19:md19100552. [PMID: 34677451 PMCID: PMC8539943 DOI: 10.3390/md19100552] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 12/13/2022] Open
Abstract
The interest in seaweeds for cosmetic, cosmeceutics, and nutricosmetics is increasing based on the demand for natural ingredients. Seaweeds offer advantages in relation to their renewable character, wide distribution, and the richness and versatility of their valuable bioactive compounds, which can be used as ingredients, as additives, and as active agents in the formulation of skin care products. Bioactive compounds, such as polyphenols, polysaccharides, proteins, peptides, amino acids, lipids, vitamins, and minerals, are responsible for the biological properties associated with seaweeds. Seaweed fractions can also offer technical features, such as thickening, gelling, emulsifying, texturizing, or moistening to develop cohesive matrices. Furthermore, the possibility of valorizing industrial waste streams and algal blooms makes them an attractive, low cost, raw and renewable material. This review presents an updated summary of the activities of different seaweed compounds and fractions based on scientific and patent literature.
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Macroalgae as Protein Sources—A Review on Protein Bioactivity, Extraction, Purification and Characterization. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11177969] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The increased demand for protein sources combined with a decrease in the available land and water resources have led to a growing interest in macroalgae as alternative protein sources. This review focuses on strategies for macroalgae protein extraction, enrichment and characterization. To date, the protein extraction methods applied to algae include enzymatic hydrolysis, physical processes and chemical extraction. Novel methods, such as pulsed electric field, microwave-assisted, pressurized liquid and supercritical fluid extractions, and the application of smart solvents are discussed. An overview of the use of membranes and other processes to generate high-value protein concentrates from algae extracts is also presented, as well as some examples of the methods used for their characterization. The potential bioactivities from macroalgae-derived proteins and peptides, including novel glycoproteins and lectins, are briefly reviewed.
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Noriega-Fernández E, Sone I, Astráin-Redín L, Prabhu L, Sivertsvik M, Álvarez I, Cebrián G. Innovative Ultrasound-Assisted Approaches towards Reduction of Heavy Metals and Iodine in Macroalgal Biomass. Foods 2021; 10:foods10030649. [PMID: 33808536 PMCID: PMC8003320 DOI: 10.3390/foods10030649] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 12/19/2022] Open
Abstract
The aim of this work was to evaluate the potential of ultrasound (US), alone or in combination with mild heating and/or EDTA towards reduction of As, Cd, I, and Hg content of Laminaria hyperborea. Concentrations of As, Cd, I, and Hg of 56.29, 0.596, 7340, and <0.01 mg kg−1 of dry weight, respectively, were found in L. hyperborea blades. Treatment with US at 50 °C increased approx. 2-fold the amount of As released, although did not affect significantly the content of Cd or I, as compared to control (no US) samples. Reducing the temperature to 8 °C significantly decreased the effect of US, but heating at 80 °C did not cause a significant effect as compared to treatments at 50 °C. On the other hand, treatment with 0.1 N EDTA at 50 °C enhanced the percentage of Cd released by approximately 7-fold, regardless of sonication. In the present work, the combination of US and EDTA at 50 °C for 5 min led to a significant reduction of the As (32%), Cd (52%) and I (31%) content in L. hyperborea, thus improving the product’s safety for consumers.
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Affiliation(s)
- Estefanía Noriega-Fernández
- Department of Processing Technology, Nofima, NO-4021 Stavanger, Norway; (I.S.); (L.P.); (M.S.)
- European Food Safety Authority, Via Carlo Magno 1A, 43126 Parma, Italy
- Correspondence: ; Tel.: +47-47706088
| | - Izumi Sone
- Department of Processing Technology, Nofima, NO-4021 Stavanger, Norway; (I.S.); (L.P.); (M.S.)
| | - Leire Astráin-Redín
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón—IA2—(Universidad de Zaragoza-CITA), 50013 Zaragoza, Spain; (L.A.-R.); (I.Á.); (G.C.)
| | - Leena Prabhu
- Department of Processing Technology, Nofima, NO-4021 Stavanger, Norway; (I.S.); (L.P.); (M.S.)
| | - Morten Sivertsvik
- Department of Processing Technology, Nofima, NO-4021 Stavanger, Norway; (I.S.); (L.P.); (M.S.)
| | - Ignacio Álvarez
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón—IA2—(Universidad de Zaragoza-CITA), 50013 Zaragoza, Spain; (L.A.-R.); (I.Á.); (G.C.)
| | - Guillermo Cebrián
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón—IA2—(Universidad de Zaragoza-CITA), 50013 Zaragoza, Spain; (L.A.-R.); (I.Á.); (G.C.)
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Rudke AR, de Andrade CJ, Ferreira SRS. Kappaphycus alvarezii macroalgae: An unexplored and valuable biomass for green biorefinery conversion. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.07.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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11
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Flores EMM, Mello PA, Krzyzaniak SR, Cauduro VH, Picoloto RS. Challenges and trends for halogen determination by inductively coupled plasma mass spectrometry: A review. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34 Suppl 3:e8727. [PMID: 31950534 DOI: 10.1002/rcm.8727] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 01/10/2020] [Accepted: 01/13/2020] [Indexed: 05/29/2023]
Abstract
RATIONALE In this review, works published in the past 25 years for fluorine, chlorine, bromine, and iodine determination in several matrices by inductively coupled plasma mass spectrometry (ICP-MS) were covered. Usually, the determination of halogens has been performed by ICP-MS using a previous sample preparation step or, more recently, by direct analysis of solid or liquid samples. METHODS Methods based on combustion, extraction, pyrohydrolysis, sample dilution in organic or aqueous medium, and wet digestion, among others, are discussed. Moreover, the recent applications of methods based on laser ablation (LA) and electrothermal vaporization (ETV) coupled to ICP-MS are discussed. RESULTS The main challenge for methods using sample preparation has been to obtain a final solution compatible with ICP-MS, as well as to overcome problems related to analyte losses and contamination. Interferences due to the presence of dissolved organic compounds in solution, enhancement or suppression of ionization of analytes, and related matrix effects have been of concern when using ICP-MS. For the determination of halogens by ICP-MS using LA and ETV systems, some limitations related to the difficulty of calibration are pointed out, impairing the widespread use of this approach. CONCLUSIONS A critical view is presented for further halogen determination by ICP-MS, mainly for matrices considered difficult to digest using conventional protocols.
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Affiliation(s)
- Erico M M Flores
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Paola A Mello
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Sindy R Krzyzaniak
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Vitoria H Cauduro
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Rochele S Picoloto
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
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Wang X, Xu J, Wang L, Gao X, Fu X, Zhao Y. Optimization of Microwave-Ultrasound-assisted Enzymatic Hydrolysis extraction of iodine amino acids in laminaria by high performance liquid chromatography with a photodiode array detector. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101452] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Peng LQ, Yu WY, Xu JJ, Cao J. Pyridinium ionic liquid-based liquid-solid extraction of inorganic and organic iodine from Laminaria. Food Chem 2018; 239:1075-1084. [PMID: 28873524 DOI: 10.1016/j.foodchem.2017.07.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 07/06/2017] [Accepted: 07/09/2017] [Indexed: 11/26/2022]
Abstract
A simple, green and effective extraction method, namely, pyridinium ionic liquid- (IL) based liquid-solid extraction (LSE), was first designed to extract the main inorganic and organic iodine compounds (I-, monoiodo-tyrosine (MIT) and diiodo-tyrosine (DIT)). The optimal extraction conditions were as follows: ultrasonic intensity 100W, IL ([EPy]Br) concentration 200mM, extraction time 30min, liquid/solid ratio 10mL/g, and pH value 6.5. The morphologies of Laminaria were studied by scanning electron microscopy and transmission electron microscopy. The recovery values of I-, MIT and DIT from Laminaria were in the range of 88% to 94%, and limits of detection were in the range of 59.40 to 283.6ng/g. The proposed method was applied to the extraction and determination of iodine compounds in three Laminaria. The results showed that IL-based LSE could be a promising method for rapid extraction of bioactive iodine from complex food matrices.
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Affiliation(s)
- Li-Qing Peng
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Wen-Yan Yu
- The Emergency Department, Zhejiang Provincial Hospital of Traditional Chinese Medicine, Hangzhou 310018, China.
| | - Jing-Jing Xu
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Jun Cao
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China.
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14
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The development of seaweed-derived bioactive compounds for use as prebiotics and nutraceuticals using enzyme technologies. Trends Food Sci Technol 2017. [DOI: 10.1016/j.tifs.2017.10.002] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Garcia-Vaquero M, Rajauria G, O'Doherty J, Sweeney T. Polysaccharides from macroalgae: Recent advances, innovative technologies and challenges in extraction and purification. Food Res Int 2017; 99:1011-1020. [DOI: 10.1016/j.foodres.2016.11.016] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 11/04/2016] [Accepted: 11/15/2016] [Indexed: 12/13/2022]
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16
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Wang SL, Yi L, Ye LH, Cao J, Du LJ, Peng LQ, Xu JJ, Zhang QD. Microwave-assisted micellar extraction of organic and inorganic iodines using zwitterionic surfactants. J Chromatogr A 2017. [DOI: 10.1016/j.chroma.2017.06.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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17
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Cao J, Peng LQ, Xu JJ, Du LJ, Zhang QD. Simultaneous microextraction of inorganic iodine and iodinated amino acids by miniaturized matrix solid-phase dispersion with molecular sieves and ionic liquids. J Chromatogr A 2016; 1477:1-10. [DOI: 10.1016/j.chroma.2016.11.053] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 11/23/2016] [Accepted: 11/25/2016] [Indexed: 02/05/2023]
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18
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Koronowicz AA, Kopeć A, Master A, Smoleń S, Piątkowska E, Bieżanowska-Kopeć R, Ledwożyw-Smoleń I, Skoczylas Ł, Rakoczy R, Leszczyńska T, Kapusta-Duch J, Pysz M. Transcriptome Profiling of Caco-2 Cancer Cell Line following Treatment with Extracts from Iodine-Biofortified Lettuce (Lactuca sativa L.). PLoS One 2016; 11:e0147336. [PMID: 26799209 PMCID: PMC4723252 DOI: 10.1371/journal.pone.0147336] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 12/31/2015] [Indexed: 12/29/2022] Open
Abstract
Although iodization of salt is the most common method used to obtain iodine-enriched food, iodine deficiency disorders are still a global health problem and profoundly affect the quality of human life. Iodine is required for the synthesis of thyroid hormones, which are crucial regulators of human metabolism, cell growth, proliferation, apoptosis and have been reported to be involved in carcinogenesis. In this study, for the first time, we evaluated the effect of iodine-biofortified lettuce on transcriptomic profile of Caco-2 cancer cell line by applying the Whole Human Genome Microarray assay. We showed 1326 differentially expressed Caco-2 transcripts after treatment with iodine-biofortified (BFL) and non-fortified (NFL) lettuce extracts. We analysed pathways, molecular functions, biological processes and protein classes based on comparison between BFL and NFL specific genes. Iodine, which was expected to act as a free ion (KI-NFL) or at least in part to be incorporated into lettuce macromolecules (BFL), differently regulated pathways of numerous transcription factors leading to different cellular effects. In this study we showed the inhibition of Caco-2 cells proliferation after treatment with BFL, but not potassium iodide (KI), and BFL-mediated induction of mitochondrial apoptosis and/or cell differentiation. Our results showed that iodine-biofortified plants can be effectively used by cells as an alternative source of this trace element. Moreover, the observed differences in action of both iodine sources may suggest a potential of BFL in cancer treatment.
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Affiliation(s)
- Aneta A. Koronowicz
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Aneta Kopeć
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Adam Master
- Department of Biochemistry and Molecular Biology, Medical Centre for Postgraduate Education, Warszawa, Poland
| | - Sylwester Smoleń
- Unit of Plant Nutrition, Institute of Plant Biology and Biotechnology, Faculty of Horticulture, University of Agriculture, Krakow, Poland
| | - Ewa Piątkowska
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Renata Bieżanowska-Kopeć
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Iwona Ledwożyw-Smoleń
- Unit of Biochemistry, Institute of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture, Krakow, Poland
| | - Łukasz Skoczylas
- Department of Fruit, Vegetable and Mushroom Processing, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Roksana Rakoczy
- Unit of Plant Nutrition, Institute of Plant Biology and Biotechnology, Faculty of Horticulture, University of Agriculture, Krakow, Poland
| | - Teresa Leszczyńska
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Joanna Kapusta-Duch
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Mirosław Pysz
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
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19
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Cao W, Hu SS, Ye LH, Cao J, Pang XQ, Xu JJ. Trace matrix solid phase dispersion using a molecular sieve as the sorbent for the determination of flavonoids in fruit peels by ultra-performance liquid chromatography. Food Chem 2016. [DOI: 10.1016/j.foodchem.2015.05.133] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Cao X, Ma W, Liu L, Xu J, Wang H, Li X, Wang J, Zhang J, Wang Z, Gu Y. Analysis of potassium iodate reduction in tissue homogenates using high performance liquid chromatography-inductively coupled plasma-mass spectrometry. J Trace Elem Med Biol 2015; 32:1-6. [PMID: 26302905 DOI: 10.1016/j.jtemb.2015.04.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 03/26/2015] [Accepted: 04/27/2015] [Indexed: 12/15/2022]
Abstract
Potassium iodate (KIO3) and potassium iodide (KI) are the major salt iodization agents used worldwide. Unlike iodide (I(-)), iodate (IO3(-)) should be reduced to I(-) before it can be effectively used by the thyroid. In this study, we developed a new method for analyzing IO3(-) and I(-) in tissue homogenates using high performance liquid chromatography coupled to inductively coupled plasma mass spectrometry (HPLC-ICP-MS). We further applied the method to demonstrate the KIO3 reduction process by tissues in vitro. The effects of KIO3 on the total antioxidative activity (TAA) and reduced nicotinamide adenine dinucleotide phosphate (NADPH) were also investigated here. Finally, we found that IO3(-) can be reduced to I(-) by tissue homogenates and IO3(-) irreversibly decreases the antioxidant capability of tissues. Our studies suggest that KIO3 might have a big effect on the redox balance of tissue and would further result in oxidative stress of organisms.
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Affiliation(s)
- Xiaoxiao Cao
- National Reference Laboratory for IDD, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Beijing 102206, China
| | - Wei Ma
- National Reference Laboratory for IDD, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Beijing 102206, China
| | - Liejun Liu
- National Reference Laboratory for IDD, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Beijing 102206, China
| | - Jing Xu
- National Reference Laboratory for IDD, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Beijing 102206, China
| | - Haiyan Wang
- National Reference Laboratory for IDD, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Beijing 102206, China
| | - Xiuwei Li
- National Reference Laboratory for IDD, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Beijing 102206, China
| | - Jiangqing Wang
- National Reference Laboratory for IDD, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Beijing 102206, China
| | - Jianhua Zhang
- National Reference Laboratory for IDD, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Beijing 102206, China
| | - Zexi Wang
- National Reference Laboratory for IDD, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Beijing 102206, China
| | - Yunyou Gu
- National Reference Laboratory for IDD, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Beijing 102206, China.
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21
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Delgado-Povedano M, Luque de Castro M. A review on enzyme and ultrasound: A controversial but fruitful relationship. Anal Chim Acta 2015; 889:1-21. [DOI: 10.1016/j.aca.2015.05.004] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/02/2015] [Accepted: 05/05/2015] [Indexed: 10/23/2022]
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22
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Leclercq A, Nonell A, Todolí Torró JL, Bresson C, Vio L, Vercouter T, Chartier F. Introduction of organic/hydro-organic matrices in inductively coupled plasma optical emission spectrometry and mass spectrometry: A tutorial review. Part I. Theoretical considerations. Anal Chim Acta 2015; 885:33-56. [DOI: 10.1016/j.aca.2015.03.049] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 02/20/2015] [Accepted: 03/27/2015] [Indexed: 12/14/2022]
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23
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Leclercq A, Nonell A, Todolí Torró JL, Bresson C, Vio L, Vercouter T, Chartier F. Introduction of organic/hydro-organic matrices in inductively coupled plasma optical emission spectrometry and mass spectrometry: a tutorial review. Part II. Practical considerations. Anal Chim Acta 2015; 885:57-91. [PMID: 26231892 DOI: 10.1016/j.aca.2015.04.039] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/31/2015] [Accepted: 04/02/2015] [Indexed: 01/21/2023]
Abstract
Inductively coupled plasma optical emission spectrometry (ICP-OES) and mass spectrometry (ICP-MS) are increasingly used to carry out analyses in organic/hydro-organic matrices. The introduction of such matrices into ICP sources is particularly challenging and can be the cause of numerous drawbacks. This tutorial review, divided in two parts, explores the rich literature related to the introduction of organic/hydro-organic matrices in ICP sources. Part I provided theoretical considerations associated with the physico-chemical properties of such matrices, in an attempt to understand the induced phenomena. Part II of this tutorial review is dedicated to more practical considerations on instrumentation, instrumental and operating parameters, as well as analytical strategies for elemental quantification in such matrices. Two important issues are addressed in this part: the first concerns the instrumentation and optimization of instrumental and operating parameters, pointing out (i) the description, benefits and drawbacks of different kinds of nebulization and desolvation devices and the impact of more specific instrumental parameters such as the injector characteristics and the material used for the cone; and, (ii) the optimization of operating parameters, for both ICP-OES and ICP-MS. Even if it is at the margin of this tutorial review, Electrothermal Vaporization and Laser Ablation will also be shortly described. The second issue is devoted to the analytical strategies for elemental quantification in such matrices, with particular insight into the isotope dilution technique, particularly used in speciation analysis by ICP-coupled separation techniques.
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Affiliation(s)
- Amélie Leclercq
- CEA Saclay, DEN, DANS, DPC, SEARS, Laboratoire de développement Analytique Nucléaire Isotopique et Elémentaire, 91191 Gif-sur-Yvette, France.
| | - Anthony Nonell
- CEA Saclay, DEN, DANS, DPC, SEARS, Laboratoire de développement Analytique Nucléaire Isotopique et Elémentaire, 91191 Gif-sur-Yvette, France.
| | - José Luis Todolí Torró
- Universidad de Alicante, Departamento de Quimica Analitica, Nutricion y Bromatología, Ap. de Correos, 99, 03080 Alicante, Spain.
| | - Carole Bresson
- CEA Saclay, DEN, DANS, DPC, SEARS, Laboratoire de développement Analytique Nucléaire Isotopique et Elémentaire, 91191 Gif-sur-Yvette, France.
| | - Laurent Vio
- CEA Saclay, DEN, DANS, DPC, SEARS, Laboratoire de développement Analytique Nucléaire Isotopique et Elémentaire, 91191 Gif-sur-Yvette, France.
| | - Thomas Vercouter
- CEA Saclay, DEN, DANS, DPC, SEARS, Laboratoire de développement Analytique Nucléaire Isotopique et Elémentaire, 91191 Gif-sur-Yvette, France.
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24
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Kulshreshtha G, Burlot AS, Marty C, Critchley A, Hafting J, Bedoux G, Bourgougnon N, Prithiviraj B. Enzyme-assisted extraction of bioactive material from Chondrus crispus and Codium fragile and its effect on herpes simplex virus (HSV-1). Mar Drugs 2015; 13:558-80. [PMID: 25603348 PMCID: PMC4306952 DOI: 10.3390/md13010558] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 01/04/2015] [Indexed: 11/16/2022] Open
Abstract
Codium fragile and Chondrus crispus are, respectively, green and red seaweeds which are abundant along the North Atlantic coasts. We investigated the chemical composition and antiviral activity of enzymatic extracts of C. fragile (CF) and C. crispus (CC). On a dry weight basis, CF consisted of 11% protein, 31% neutral sugars, 0.8% sulfate, 0.6% uronic acids, and 49% ash, while CC contained 27% protein, 28% neutral sugars, 17% sulfate, 1.8% uronic acids, and 25% ash. Enzyme-assisted hydrolysis improved the extraction efficiency of bioactive materials. Commercial proteases and carbohydrases significantly improved (p ≤ 0.001) biomass yield (40%-70% dry matter) as compared to aqueous extraction (20%-25% dry matter). Moreover, enzymatic hydrolysis enhanced the recovery of protein, neutral sugars, uronic acids, and sulfates. The enzymatic hydrolysates exhibited significant activity against Herpes simplex virus (HSV-1) with EC50 of 77.6-126.8 μg/mL for CC and 36.5-41.3 μg/mL for CF, at a multiplicity of infection (MOI) of 0.001 ID50/cells without cytotoxity (1-200 μg/mL). The extracts obtained from proteases (P1) and carbohydrases (C3) were also effective at higher virus MOI of 0.01 ID50/cells without cytotoxity. Taken together, these results indicate the potential application of enzymatic hydrolysates of C. fragile and C. crispus in functional food and antiviral drug discovery.
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Affiliation(s)
- Garima Kulshreshtha
- Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, PO Box 550, Truro, NS B2N 5E3, Canada.
| | - Anne-Sophie Burlot
- Laboratoire de Biotechnologie et Chimie Marines, EA3884, UBS, IUEM, F-56000 Vannes, France.
| | - Christel Marty
- Laboratoire de Biotechnologie et Chimie Marines, EA3884, UBS, IUEM, F-56000 Vannes, France.
| | - Alan Critchley
- Acadian Seaplants Limited, 30 Brown Avenue, Dartmouth, NS B3B 1X8, Canada.
| | - Jeff Hafting
- Acadian Seaplants Limited, 30 Brown Avenue, Dartmouth, NS B3B 1X8, Canada.
| | - Gilles Bedoux
- Laboratoire de Biotechnologie et Chimie Marines, EA3884, UBS, IUEM, F-56000 Vannes, France.
| | - Nathalie Bourgougnon
- Laboratoire de Biotechnologie et Chimie Marines, EA3884, UBS, IUEM, F-56000 Vannes, France.
| | - Balakrishnan Prithiviraj
- Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, PO Box 550, Truro, NS B2N 5E3, Canada.
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25
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Sun J, Wang D, Cheng H, Liu J, Wang Y, Xu Z. Use of ion-pairing reagent for improving iodine speciation analysis in seaweed by pressure-driven capillary electrophoresis and ultraviolet detection. J Chromatogr A 2015; 1379:112-7. [DOI: 10.1016/j.chroma.2014.12.056] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 12/18/2014] [Accepted: 12/19/2014] [Indexed: 11/30/2022]
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26
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Analysis of tetracyclines in chicken tissues and dung using LC–MS coupled with ultrasound-assisted enzymatic hydrolysis. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.05.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Speciation of iodine-containing proteins in Nori seaweed by gel electrophoresis laser ablation ICP-MS. Talanta 2014; 127:175-80. [PMID: 24913873 DOI: 10.1016/j.talanta.2014.04.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 03/31/2014] [Accepted: 04/02/2014] [Indexed: 11/23/2022]
Abstract
An analytical approach providing an insight into speciation of iodine in water insoluble fraction of edible seaweed (Nori) was developed. The seaweed, harvested in the Galician coast (Northwestern Spain), contained 67.7±1.3 μg g(-1) iodine of which 25% was water soluble and could be identifies as iodide. Extraction conditions of water insoluble residue using urea, NaOH, SDS and Triton X-100 were investigated. The protein pellets obtained in optimized conditions (after precipitation of urea extracts with acetone), were digested with trypsin and protease XIV. Size exclusion chromatography-ICP-MS of both enzymatic digests demonstrated the occurrence of iodoaminoacids putatively present in proteins. Intact proteins could be separated by gel electrophoresis after an additional extraction of the protein extract with phenol. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS PAGE) with laser ablation ICP-MS detection of (127)I indicated the presence of iodine in protein bands corresponding to molecular masses of 110 kDa, 40 kDa, 27 kDa, 20 kDa and 10 kDa. 2D IEF-SDS PAGE with laser ablation ICP-MS (127)I imaging allowed the detection of 5 iodine containing protein spots in the alkaline pI range.
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28
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Yoshida M, Mukama A, Hosomi R, Fukunaga K, Nishiyama T. Serum and tissue iodine concentrations in rats fed diets supplemented with kombu powder or potassium iodide. J Nutr Sci Vitaminol (Tokyo) 2014; 60:447-9. [PMID: 25866310 DOI: 10.3177/jnsv.60.447] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Serum and tissue iodine concentration was measured in rats fed a diet supplemented with powdered kombu (Saccharina sculpera) or potassium iodide to evaluate the absorption of iodine from kombu. Eighteen male 5-wk-old Wistar rats were divided into three groups and fed a basal AIN93G diet (iodine content, 0.2 mg/kg) or the basal diet supplemented with iodine (183 mg/kg) either in the form of kombu powder or potassium iodine (KI) for 4 wk. There were no differences in weight gain or serum biochemistry tests (alanine aminotransferase and aspartate aminotransferase activity, and total serum cholesterol and triglyceride concentration) after iodine supplementation. In addition, serum levels of the thyroid hormones thyroxine and triiodothyronine, as well as thyroid-stimulating hormone, were not affected. On the other hand, serum and tissue (thyroid, liver and kidney) iodine concentrations were markedly elevated after iodine supplementation. There was no difference in thyroid iodine concentration between KI and kombu supplementation. However, there was a significant difference observed in the iodine concentrations of serum, liver and kidney between the two iodine sources; rats fed KI had iodine concentrations in these tissues 1.8 to 1.9 times higher than those in rats fed kombu powder. These results suggest that the absorption of iodine from kombu is reduced compared to that from potassium iodide.
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Affiliation(s)
- Munehiro Yoshida
- Laboratory of Food and Nutritional Sciences, Faculty of Chemistry, Materials and Bioengineering, Kansai University
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