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Nurani W, Anwar Y, Batubara I, Arung ET, Fatriasari W. Kappaphycus alvarezii as a renewable source of kappa-carrageenan and other cosmetic ingredients. Int J Biol Macromol 2024; 260:129458. [PMID: 38232871 DOI: 10.1016/j.ijbiomac.2024.129458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/19/2024]
Abstract
Kappa-carrageenan is one of the most traded marine-derived hydrocolloids used in the food-and-beverage, pharmaceuticals, and personal care/cosmetics industries. K. alvarezii (previously known as Kappaphycus alvarezii) is arguably the most important natural producer based on annual production size and near-homogeneity of the product (i.e., primarily being the kappa-type). The anticipated expansion of the kappa-carrageenan market in the coming years could easily generate >100,000 MT of residual K. alvarezii biomass per year, which, if left untreated, can severely affect the environment and economy of the surrounding area. Among several possible valorization routes, turning the biomass residue into anti-photoaging cosmetic ingredients could potentially be the most sustainable one. Not only optimizing the profit (thus better ensuring economic sustainability) relative to the biofuels- and animal feed-routes, the action could also promote environmental sustainability. It could reduce the dependency of the current cosmetic industry on both petrochemicals and terrestrial plant-derived bioactive compounds. Note how, in contrast to terrestrial agriculture, industrial cultivation of seaweeds does not require arable land, freshwater, fertilizers, and pesticides. The valorization mode could also facilitate the sequestration of more greenhouse gas CO2 as daily-used chemicals, since the aerial productivity of seaweeds is much higher than that of terrestrial plants. This review first summarizes any scientific evidence that K. alvarezii extracts possess anti-photoaging properties. Next, realizing that conventional extraction methods may prevent the use of such extracts in cosmetic formulations, this review discusses the feasibility of obtaining various K. alvarezii compounds using green methods. Lastly, a perspective on several potential challenges to the proposed valorization scheme, as well as the potential solutions, is offered.
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Affiliation(s)
- Wasti Nurani
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency (BRIN), Kawasan KST Soekarno, Jl. Raya Bogor KM 46, Cibinong 16911, Indonesia
| | - Yelfi Anwar
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency (BRIN), Kawasan KST Soekarno, Jl. Raya Bogor KM 46, Cibinong 16911, Indonesia
| | - Irmanida Batubara
- Department of Chemistry, IPB University, Bogor, Indonesia; Tropical Biopharmaca Research Center (TropBRC), Institute of Research and Community Services, IPB University, Bogor, Indonesia
| | - Enos Tangke Arung
- Faculty of Forestry, Universitas Mulawarman, Samarinda, East Kalimantan, Indonesia; Research Collaboration Center for Biomass-Based Nano Cosmetic, in collaboration with National Research and Innovation Agency (BRIN), Samarinda, East Kalimantan, Indonesia
| | - Widya Fatriasari
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency (BRIN), Kawasan KST Soekarno, Jl. Raya Bogor KM 46, Cibinong 16911, Indonesia; Research Collaboration Center for Biomass-Based Nano Cosmetic, in collaboration with National Research and Innovation Agency (BRIN), Samarinda, East Kalimantan, Indonesia; Research Collaboration Center for Marine Biomaterials, Jl. Ir. Sukarno, Jatinangor, Sumedang, Indonesia.
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Kee PE, Phang SM, Lan JCW, Tan JS, Khoo KS, Chang JS, Ng HS. Tropical Seaweeds as a Sustainable Resource Towards Circular Bioeconomy: Insights and Way Forward. Mol Biotechnol 2023:10.1007/s12033-023-00940-7. [PMID: 37938536 DOI: 10.1007/s12033-023-00940-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 09/21/2023] [Indexed: 11/09/2023]
Abstract
Seaweeds are photosynthetic marine macroalgae known for their rapid biomass growth and their significant contributions to global food and feed production. Seaweeds play a crucial role in mitigating various environmental issues, including greenhouse gases, ocean acidification, hypoxia, and eutrophication. Tropical seaweeds are typically found in tropical and subtropical coastal zones with warmer water temperatures and abundant sunlight. These tropical seaweeds are rich sources of proteins, vitamins, minerals, fibers, polysaccharides, and bioactive compounds, contributing to their health-promoting properties and their diverse applications across a range of industries. The productivity, cultivability, nutritional quality, and edibility of tropical seaweeds have been well-documented. This review article begins with an introduction to the growth conditions of selected tropical seaweeds. Subsequently, the multifunctional properties of tropical seaweeds including antioxidant and anti-inflammatory, anti-coagulant, anti-carcinogenic and anti-proliferative, anti-viral, therapeutic and preventive properties were comprehensively evaluated. The potential application of tropical seaweeds as functional foods and feeds, as well as their contributions to sustainable cosmetics, bioenergy, and biofertilizer production were also highlighted. This review serves as a valuable resource for researchers involved in seaweed farming as it provides current knowledge and insights into the cultivation and utilization of seaweeds.
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Affiliation(s)
- Phei Er Kee
- Centre for Research and Graduate Studies, University of Cyberjaya, Persiaran Bestari, 63000, Cyberjaya, Selangor, Malaysia
| | - Siew Moi Phang
- Faculty of Applied Sciences, UCSI University, UCSI Heights, Cheras, 56000, Kuala Lumpur, Malaysia
- Institute Ocean and Earth Sciences, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - John Chi-Wei Lan
- Biorefinery and Bioprocess Engineering Laboratory, Department of Chemical Engineering and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li, Taoyuan, 32003, Taiwan.
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Chungli, Taoyuan, 320, Taiwan.
| | - Joo Shun Tan
- School of Industrial Technology, Universiti Sains Malaysia, 11800, Gelugor, Pulau Pinang, Malaysia
| | - Kuan Shiong Khoo
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Chungli, Taoyuan, 320, Taiwan
| | - Jo-Shu Chang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Hui-Suan Ng
- Centre for Research and Graduate Studies, University of Cyberjaya, Persiaran Bestari, 63000, Cyberjaya, Selangor, Malaysia.
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Udo T, Mummaleti G, Mohan A, Singh RK, Kong F. Current and emerging applications of carrageenan in the food industry. Food Res Int 2023; 173:113369. [PMID: 37803710 DOI: 10.1016/j.foodres.2023.113369] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/09/2023] [Accepted: 08/10/2023] [Indexed: 10/08/2023]
Abstract
Carrageenan, a polysaccharide derived from red algae, has a long history of use as a food additive in food. Carrageenan comes in three classes, κ-, ι-, and λ-carrageenan, with different properties attributed to their organosulfate substitution levels, and their interactions with other food components give rise to properties such as water holding, thickening, gelling, and stabilizing. Over the years, carrageenan has been used in wide variety of food products such as meat, dairy, and flour-based products, and their mechanisms and functions in these matrices have also been studied. With the emergence of novel food technologies, carrageenan's potential applications have been extensively explored alongside, including encapsulation, edible films/coatings, plant-based analogs, and 3D/4D printing. As the food technology evolves, the required functions of food ingredients have changed, and carrageenan is being investigated for its role in these new areas. However, there are many similarities in the use of carrageenan in both classic and emerging applications, and understanding the underlying principles of carrageenan will lead to a proper use of carrageenan in emerging food products. This review focuses on the potential of carrageenan as a food ingredient in these emerging technologies mainly based on papers published within the past five years, highlighting its functions and applications to better understand its role in food products.
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Affiliation(s)
- Toshifumi Udo
- Department of Food Science and Technology, The University of Georgia, Athens, GA 30602, USA
| | - Gopinath Mummaleti
- Department of Food Science and Technology, The University of Georgia, Athens, GA 30602, USA
| | - Anand Mohan
- Department of Food Science and Technology, The University of Georgia, Athens, GA 30602, USA
| | - Rakesh K Singh
- Department of Food Science and Technology, The University of Georgia, Athens, GA 30602, USA
| | - Fanbin Kong
- Department of Food Science and Technology, The University of Georgia, Athens, GA 30602, USA.
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Hans N, Gupta S, Pattnaik F, Patel AK, Naik S, Malik A. Valorization of Kappaphycus alvarezii through extraction of high-value compounds employing green approaches and assessment of the therapeutic potential of κ-carrageenan. Int J Biol Macromol 2023; 250:126230. [PMID: 37558033 DOI: 10.1016/j.ijbiomac.2023.126230] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/28/2023] [Accepted: 08/06/2023] [Indexed: 08/11/2023]
Abstract
This study utilizes different emerging green extraction technologies to recover maximum value-added products from Kappaphycus alvarezii and evaluate their bio-functional properties. Using the supercritical fluid extraction (SFE) method, the total lipid yield of 0.21 ± 0.2 % was obtained from the biomass. Linoleic acid, eicosapentaenoic acid, arachidonic acid, γ-linolenic acid, and docosahexaenoic acid were present in higher concentrations (9.12 %) in the lipid extracted with SFE as compared to hexane (5.5 %). Using an ultrasonication assisted approach, ~56 % of κ-carrageenan was recovered from SFE residual biomass, which contains 28.5 ± 1.9 % sulfate content. It exhibited a monosaccharide content of 3,6-anhydrogalactose (~24 %) and galactose (~53 %), as well as rheological properties within FAO limitations that can be explored for food-grade applications. ~58 % of the total protein (12.5 %) from SFE residual biomass was recovered using subcritical water hydrolysis method. The effectiveness of κ-carrageenan in suppressing the 3CLpro of SARS-CoV-2 using in vitro and in silico approaches was investigated. κ-Carrageenan effectively inhibited the main protease by up to 93 % at 1.6 mg mL-1. In silico results revealed that κ-carrageenan successfully binds to the active site of the main protease while retaining the structural integrity and stability of protein-ligand complexes.
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Affiliation(s)
- Nidhi Hans
- Supercritical Fluid Extraction Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, New Delhi 110016, India
| | - Shreya Gupta
- Kausma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, Delhi 110016, India
| | - Falguni Pattnaik
- Supercritical Fluid Extraction Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, New Delhi 110016, India
| | - Ashok Kumar Patel
- Kausma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, Delhi 110016, India.
| | - Satyanarayan Naik
- Supercritical Fluid Extraction Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, New Delhi 110016, India.
| | - Anushree Malik
- Applied Microbiology Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, New Delhi 110016, India.
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Garcia-Perez P, Cassani L, Garcia-Oliveira P, Xiao J, Simal-Gandara J, Prieto MA, Lucini L. Algal nutraceuticals: A perspective on metabolic diversity, current food applications, and prospects in the field of metabolomics. Food Chem 2023; 409:135295. [PMID: 36603477 DOI: 10.1016/j.foodchem.2022.135295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/16/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
The current consumers' demand for food naturalness is urging the search for new functional foods of natural origin with enhanced health-promoting properties. In this sense, algae constitute an underexplored biological source of nutraceuticals that can be used to fortify food products. Both marine macroalgae (or seaweeds) and microalgae exhibit a myriad of chemical constituents with associated features as a result of their primary and secondary metabolism. Thus, primary metabolites, especially polysaccharides and phycobiliproteins, present interesting properties to improve the rheological and nutritional properties of food matrices, whereas secondary metabolites, such as polyphenols and xanthophylls, may provide interesting bioactivities, including antioxidant or cytotoxic effects. Due to the interest in algae as a source of nutraceuticals by the food and related industries, novel strategies should be undertaken to add value to their derived functional components. As a result, metabolomics is considered a high throughput technology to get insight into the full metabolic profile of biological samples, and it opens a wide perspective in the study of algae metabolism, whose knowledge is still little explored. This review focuses on algae metabolism and its applications in the food industry, paying attention to the promising metabolomic approaches to be developed aiming at the functional characterization of these organisms.
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Affiliation(s)
- Pascual Garcia-Perez
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain; Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy.
| | - Lucia Cassani
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain; Centro de Investigação de Montanha (CIMO-IPB), Campus de Santa Apolónia, Bragança, Portugal
| | - Paula Garcia-Oliveira
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain; Centro de Investigação de Montanha (CIMO-IPB), Campus de Santa Apolónia, Bragança, Portugal
| | - Jianbo Xiao
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain; International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China
| | - Jesus Simal-Gandara
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain
| | - Miguel A Prieto
- Nutrition and Bromatology Group, Faculty of Food Science and Technology, Ourense Campus, Universidade de Vigo, E32004 Ourense, Spain; Centro de Investigação de Montanha (CIMO-IPB), Campus de Santa Apolónia, Bragança, Portugal
| | - Luigi Lucini
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
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Lema Ch E, Chóez-Guaranda I, Ruíz-Barzola O, Jaramillo LI, Pacheco Flores de Valgaz Á, Van Den Hende S, Manzano Santana P. Estudio de la variabilidad en el tiempo y espacio de la actividad antioxidante y composición bioquímica de Kappaphycus alvarezii en diferentes densidades de siembra. BIONATURA 2023. [DOI: 10.21931/rb/2023.08.01.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023] Open
Abstract
Kappaphycus alvarezii es una de las especies de algas más cultivadas en el mundo, debido a su alto contenido de compuestos bioactivos con reportes antioxidantes y bioestimulantes. El presente estudio evaluó el efecto de las densidades de plantación sobre la composición bioquímica y antioxidante de K. alvarezii cultivada en un sistema de línea larga durante las estaciones seca y húmeda, con el fin de proporcionar una base científica para una cosecha óptima. Se midieron el contenido de humedad, cenizas, grasa, fibra, auxinas, fenoles, flavonoides, DPPH y ABTS. Los datos se analizaron mediante pruebas t, Wilcoxon, Kruskal-Wallis y ANOVA unidireccional. Los resultados mostraron un mayor contenido de grasa (2,01 % P.s), fibra bruta (5,21% P.s), contenido total de fenoles (324,09 μg GAE/g P.s) y ABTS (9,32 μg GAE/g P.s) durante la estación seca. Con respecto a la densidad de plantación, se produjo un aumento significativo del contenido en cenizas, fenoles totales y ABTS con una densidad de 10 líneas.célula-1 al mismo tiempo. Los contenidos de flavonoides, DPPH y auxina mostraron una tendencia estacional opuesta, alcanzando los niveles máximos en la estación húmeda. Este estudio aporta nueva información sobre las condiciones ambientales que pueden provocar cambios en la actividad antioxidante y la composición bioquímica de esta especie con vistas al desarrollo de bioproductos para diferentes sectores industriales como el alimentario, el farmacéutico y el de los fertilizantes en Ecuador.
Palabras claves: Alga roja; Fenoles; Flavonoides; Antioxidante; Composición bioquímica; Variación estacional; densidad de siembra.
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Affiliation(s)
- Estefany Lema Ch
- Facultad de Ciencias de la Vida (FCV); Campus Gustavo Galindo; Escuela Superior Politécnica del Litoral; Km. 30.5 vía Perimetral; Guayaquil P.O. Box 09-01-5863; Ecuador
| | - Iván Chóez-Guaranda
- Centro de Investigaciones Biotecnológicas del Ecuador (CIBE), Campus Gustavo Galindo; Km 30.5 vía Perimetral; Guayaquil P.O. Box 09-01-5863; Ecuador
| | - Omar Ruíz-Barzola
- Facultad de Ciencias Naturales y Matemáticas (FCNM); Campus Gustavo Galindo; Escuela Superior Politécnica del Litoral (ESPOL), Km. 30.5 vía Perimetral; Guayaquil P.O. Box 09-01-5863; Ecuador
| | - Lorena I. Jaramillo
- Departamento de Ingeniería Química y Agroindustria; Facultad de Ingeniería Química y Agroindustria; Ladrón de Guevara E11-253; Quito 170525 ; Ecuador
| | - Ángela Pacheco Flores de Valgaz
- Facultad de Ciencias de la Vida (FCV); Campus Gustavo Galindo; Escuela Superior Politécnica del Litoral; Km. 30.5 vía Perimetral; Guayaquil P.O. Box 09-01-5863; Ecuador ; Laboratorio de Instrumental; Ingeniería en Biotecnología; Facultad de Ciencias de la Vida; Campus María Auxiliadora; Universidad Politécnica Salesiana (UPS); Km 19.5 vía a la Costa; Guayaquil P.O. Box 09-01-2074, Ecuador
| | - Sofie Van Den Hende
- Centro Nacional de Acuicultura e Investigaciones Marinas (CENAIM), Escuela Superior Politécnica del Litoral (ESPOL), San Pedro de Manglaralto, P.O. Box 09-01-5863, Santa Elena, Ecuador
| | - Patricia Manzano Santana
- Facultad de Ciencias de la Vida (FCV); Campus Gustavo Galindo; Escuela Superior Politécnica del Litoral; Km. 30.5 vía Perimetral; Guayaquil P.O. Box 09-01-5863; Ecuador; Centro de Investigaciones Biotecnológicas del Ecuador (CIBE), Campus Gustavo Galindo; Km 30.5 vía Perimetral; Guayaquil P.O. Box 09-01-5863; Ecuador; Centro de Investigaciones Biotecnológicas del Ecuador (CIBE), Campus Gustavo Galindo; Km 30.5 vía Perimetral; Guayaquil P.O. Box 09-01-5863; Ecuador
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Scientific basis for the use of minimally processed homogenates of Kappaphycus alvarezii (red) and Sargassum wightii (brown) seaweeds as crop biostimulants. ALGAL RES 2023. [DOI: 10.1016/j.algal.2023.102969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Rupert R, Rodrigues KF, Thien VY, Yong WTL. Carrageenan From Kappaphycus alvarezii (Rhodophyta, Solieriaceae): Metabolism, Structure, Production, and Application. FRONTIERS IN PLANT SCIENCE 2022; 13:859635. [PMID: 35620679 PMCID: PMC9127731 DOI: 10.3389/fpls.2022.859635] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
Carrageenan is a polysaccharide derived from red algae (seaweed) with enormous economic potential in a wide range of industries, including pharmaceuticals, food, cosmetics, printing, and textiles. Carrageenan is primarily produced through aquaculture-based seaweed farming, with Eucheuma and Kappaphycus species accounting for more than 90% of global output. There are three major types of carrageenan found in red algae: kappa (κ)-, iota (ι)-, and lambda (λ)-carrageenan. Kappaphycus alvarezii is the most common kappa-carrageenan source, and it is primarily farmed in Asian countries such as Indonesia, the Philippines, Vietnam, and Malaysia. Carrageenan extracted from K. alvarezii has recently received a lot of attention due to its economic potential in a wide range of applications. This review will discuss K. alvarezii carrageenan in terms of metabolic and physicochemical structure, extraction methods and factors affecting production yield, as well as current and future applications.
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Affiliation(s)
- Rennielyn Rupert
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu, Malaysia
| | | | - Vun Yee Thien
- Innovation Center, Xiamen University Malaysia, Sunsuria, Malaysia
| | - Wilson Thau Lym Yong
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu, Malaysia
- Seaweed Research Unit, Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu, Malaysia
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Seasonal Nutritional Profile of Gelidium corneum (Rhodophyta, Gelidiaceae) from the Center of Portugal. Foods 2021; 10:foods10102394. [PMID: 34681442 PMCID: PMC8536063 DOI: 10.3390/foods10102394] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/04/2021] [Accepted: 10/07/2021] [Indexed: 11/17/2022] Open
Abstract
Gelidium corneum is a well-known agarophyte, harvested worldwide for its high agar quality. However, the species also exhibits an interesting nutritional profile, but with seasonal variations. Therefore, to evaluate the nutritional value of G. corneum, ash, crude protein, total lipids, and carbohydrates were analyzed at different times of the year. The heavy metals mercury, arsenic, lead, cadmium, and tin, as well as iodine were also measured. Finally, the seasonal antioxidant capacity of G. corneum extracts was evaluated. Our results indicate that the biomass is rich in protein (up to 16.25 ± 0.33%) and carbohydrates (up to 39.5 ± 3.29%), and low in lipids (up to 2.75 ± 0.28%), and especially in the summer, the AI, TI indexes, n-6/n-3 and h/H ratios (0.93, 0.6, 0.88 and 1.08, respectively) are very interesting. None of the contaminants exceeded the legally established limits, and the iodine values were adequate for a healthy diet. Finally, the antioxidant capacity is fair, with the DPPH ≤ 10.89 ± 1.46%, and ABTS ≤ 13.90 ± 1.54% inhibition, FRAP ≤ 0.91 ± 0.22 AAE.g−1, and TPC ≤ 6.82 ± 0.26 GAE.g−1. The results show that G. corneum is an attractive resource, with potential use as food or as a food supplement.
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Zhang Q, Yang R, Lim PE, Chin Y, Zhou S, Gao Y, Tang Q. Sun-Dried and Air-Dried Kappaphycus alvarezii Attenuates 5-Fluorouracil-Induced Intestinal Mucositis in Mice. Nutr Cancer 2021; 74:2113-2121. [PMID: 34555987 DOI: 10.1080/01635581.2021.1981403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
5-fluorouracil (5-FU)-induced intestinal mucositis (IM) often makes chemotherapy patients suffer from physical and psychological suffering. Kappaphycus alvarezii (KA) is known for its potent multiple biological activities from decades. In the current study, we explored the effect of sun-dried and air-dried Kappaphycus alvarezii as a whole food supplement on 5-FU-induced IM. Diets supplemented with sun-dried Kappaphycus alvarezii (SKA, 3%), air-dried Kappaphycus alvarezii (AKA, 3%), and 5-aminosalicylic acid (0.005%) for consecutive14 days. While intraperitoneal injection of 5-FU (50 mg/kg) induced IM for last three consecutive days, and IM was assessed by the disease activity index (DAI) and inflammatory cytokine levels. Pretreatment of KA could alleviate phenotypic index, inhibit the increase of DAI, and reverse villus/crypt ratio. On the 14th day, AKA significantly increased the weight growth rate of the mice. The intervention of SKA significantly reduced the level of TNF-α and IL-1β (P < 0.01, P < 0.01), while the intervention of AKA significantly inhibited the level of TNF-α, IL-1β, and LT (P < 0.01, P < 0.01, P < 0.001). Therefore, these results showed that KA as a whole food supplement might be prevent the 5-FU-induced IM. For the first time suggest that the use of AKA might be more effective than SKA despite exact mechanism still needs further study.
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Affiliation(s)
- Qing Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Ruzhen Yang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Phaik Eem Lim
- Institute of Ocean and Earth Sciences, University of Malaya, Kuala Lumpur, Malaysia
| | - Yaoxian Chin
- College of Food Science and Engineering, Hainan Tropical Ocean University, Sanya, China
| | - Sainan Zhou
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Yuan Gao
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Qingjuan Tang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
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Acid hydrolysis conditions for the production of fine chemicals from Gracilaria birdiae alga biomass. ALGAL RES 2021. [DOI: 10.1016/j.algal.2020.102139] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Paul SS, Vantharam Venkata HGR, Raju MV, Rama Rao SV, Nori SS, Suryanarayan S, Kumar V, Perveen Z, Prasad CS. Dietary supplementation of extracts of red sea weed (Kappaphycus alvarezii) improves growth, intestinal morphology, expression of intestinal genes and immune responses in broiler chickens. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:997-1008. [PMID: 32761828 DOI: 10.1002/jsfa.10708] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/27/2020] [Accepted: 08/06/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Effects of supplementation of dried alkaline (referred to as MVP1) and aqueous (referred to as PBD1) extracts of Kappaphycus alvarezii, were evaluated in broiler (Vencobb 400) chickens (1-35 days post-hatch). In experiment I, each of the seven diets (basal diet with three levels (0.5, 1.5 or 5.0 g kg-1 diet) of MVP1 or PBD1 and a negative control was fed to 12 pen replicates containing five birds in each. In experiment II, each of three diets [a negative control, and PBD1 at two levels (1.0 or 1.5 g kg-1 diet)] was fed to 16 pen replicates of five chicks in each. RESULTS Concentrations of total phenolics, phycobillins and free radical scavenging activity were higher (P < 0.01) whereas carrageenan was lower in PBD1 than in MVP1. In the experiment I, PBD1 at 1.5 g kg-1 diet improved (P < 0.05) body weight (BW) (7.11% higher). In the experiment II, both the treatments improved (P < 0.01) BW (9.18% and 8.47%, respectively) compared to the control. The group fed with PBD1@ 1.0 g kg-1 had higher (P < 0.05) haemagglutination inhibition titre, expression of intestinal claudin 2, TLR2A, NOD1, avian beta defensin 4, interleukin 2 and interleukin 6 genes than control. Treatments did not influence feed efficiency or levels of most of the antioxidant enzymes. Villus width and crypt depth were significantly higher in the group fed with 1.5 g kg-1 of PBD1. CONCLUSION Supplementing dried aqueous extract of K. alvarezii at 1 g kg-1 diet may be an effective strategy to increase growth and immunity in broiler chickens. © 2020 Society of Chemical Industry.
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Affiliation(s)
| | | | | | | | - Sri Sailaja Nori
- Sea6 Energy Pvt Ltd, Centre for Cellular and Molecular Platforms, NCBS TIFR, Bangalore, India
| | - Shrikumar Suryanarayan
- Sea6 Energy Pvt Ltd, Centre for Cellular and Molecular Platforms, NCBS TIFR, Bangalore, India
| | - Vikas Kumar
- ICAR-Directorate of Poultry Research, Hyderabad, India
| | - Zeba Perveen
- ICAR-Directorate of Poultry Research, Hyderabad, India
| | - Cadaba Srinivas Prasad
- Sea6 Energy Pvt Ltd, Centre for Cellular and Molecular Platforms, NCBS TIFR, Bangalore, India
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Abstract
Seaweed-based cosmetics are being gradually used by consumers as a substitute of synthetic equivalent products. These seaweed-based products normally contain purified compounds or extracts with several compounds. Several seaweeds’ molecules already demonstrated a high potential as a cosmetic active ingredient (such as, mycosporine-like amino acids, fucoidan, pigments, phenolic compounds) or as a key element for the products consistency (agar, alginate, carrageenan). Moreover, seaweeds’ compounds present important qualities for cosmetic application, such as low cytotoxicity and low allergens content. However, seaweeds’ biochemical profile can be variable, and the extraction methods can cause the loss of some of the biomolecules. This review gives a general look at the seaweed cosmetics benefits and its current application in the cosmetic industry. Moreover, it focuses on the ecological and sustainable scope of seaweed exploitation to guarantee a safe source of ingredients for the cosmetic industry and consumers.
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14
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Chin YX, Mi Y, Cao WX, Lim PE, Xue CH, Tang QJ. A Pilot Study on Anti-Obesity Mechanisms of Kappaphycus Alvarezii: The Role of Native κ-Carrageenan and the Leftover Sans-Carrageenan Fraction. Nutrients 2019; 11:E1133. [PMID: 31117266 PMCID: PMC6566674 DOI: 10.3390/nu11051133] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 05/10/2019] [Accepted: 05/17/2019] [Indexed: 12/15/2022] Open
Abstract
Kappaphycus is a commercially important edible red alga widely cultivated for carrageenan production. Here, we aimed to investigate the anti-obesity mechanism of Kappaphycus alvarezii by comparing the effects of whole seaweed (T), extracted native κ-carrageenan (CGN), and the leftover fraction sans-carrageenan (SCGN) supplementations (5%, w/w) on diet-induced obese C57BL/6J mice. A high-fat diet induced both a raised body fat percentage and serum cholesterol level, increased adipocytes size, abnormal levels of adipocytokines, and promoted gut dysbiosis. Our results showed that, overall, both CGN and SCGN were more effective in reversing obesity and related metabolic syndromes to normal levels than T. Furthermore, these findings suggested that CGN- and SCGN-modulated gut dysbiosis induced by a high-fat diet, which may play an influencing role in adiponectin dysregulation. Our data also showed some evidence that CGN and SCGN have distinct effects on selected genes involved in lipid metabolism. In conclusion, both κ-carrageenan and SCGN have novel anti-obesity potential with possible different mechanisms of action.
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Affiliation(s)
- Yao Xian Chin
- Human Health Research Laboratory, College of Food Science and Engineering, University of China, Qingdao 266003, Shandong, China.
| | - Ye Mi
- Human Health Research Laboratory, College of Food Science and Engineering, University of China, Qingdao 266003, Shandong, China.
| | - Wan Xiu Cao
- Human Health Research Laboratory, College of Food Science and Engineering, University of China, Qingdao 266003, Shandong, China.
| | - Phaik Eem Lim
- Institute of Ocean and Earth Sciences, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Chang Hu Xue
- Human Health Research Laboratory, College of Food Science and Engineering, University of China, Qingdao 266003, Shandong, China.
| | - Qing Juan Tang
- Human Health Research Laboratory, College of Food Science and Engineering, University of China, Qingdao 266003, Shandong, China.
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15
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Abstract
Recent interest in seaweeds as a source of macronutrients, micronutrients, and bioactive components has highlighted prospective applications within the functional food and nutraceutical industries, with impetus toward the alleviation of risk factors associated with noncommunicable diseases such as obesity, type 2 diabetes, and cardiovascular disease. This narrative review summarizes the nutritional composition of edible seaweeds; evaluates the evidence regarding the health benefits of whole seaweeds, extracted bioactive components, and seaweed-based food products in humans; and assesses the potential adverse effects of edible seaweeds, including those related to ingestion of excess iodine and arsenic. If the potential functional food and nutraceutical applications of seaweeds are to be realized, more evidence from human intervention studies is needed to evaluate the nutritional benefits of seaweeds and the efficacy of their purported bioactive components. Mechanistic evidence, in particular, is imperative to substantiate health claims.
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Affiliation(s)
- Paul Cherry
- Nutrition Innovation Centre for Food and Health, School of Biomedical Sciences, Ulster University, Coleraine, United Kingdom
| | | | - Pamela J Magee
- Nutrition Innovation Centre for Food and Health, School of Biomedical Sciences, Ulster University, Coleraine, United Kingdom
| | - Emeir M McSorley
- Nutrition Innovation Centre for Food and Health, School of Biomedical Sciences, Ulster University, Coleraine, United Kingdom
| | - Philip J Allsopp
- Nutrition Innovation Centre for Food and Health, School of Biomedical Sciences, Ulster University, Coleraine, United Kingdom
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16
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M H, Chong EWN, Jafarzadeh S, Paridah MT, Gopakumar DA, Tajarudin HA, Thomas S, Abdul Khalil HPS. Enhancement in the Physico-Mechanical Functions of Seaweed Biopolymer Film via Embedding Fillers for Plasticulture Application-A Comparison with Conventional Biodegradable Mulch Film. Polymers (Basel) 2019; 11:E210. [PMID: 30960194 PMCID: PMC6419062 DOI: 10.3390/polym11020210] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/19/2019] [Accepted: 01/21/2019] [Indexed: 11/28/2022] Open
Abstract
This study aimed to compare the performance of fabricated microbially induced precipitated calcium carbonate⁻ (MB⁻CaCO₃) based red seaweed (Kappaphycus alvarezii) bio-polymer film and commercial calcium carbonate⁻ (C⁻CaCO₃) based red seaweed bio-film with the conventional biodegradable mulch film. To the best of our knowledge, there has been limited research on the application of commercial CaCO₃ (C⁻CaCO₃) and microbially induced CaCO₃ (MB⁻CaCO₃) as fillers for the preparation of films from seaweed bio-polymer and comparison with biodegradable commercial plasticulture packaging. The results revealed that the mechanical, contact angle, and biodegradability properties of the polymer composite films incorporated with C⁻CaCO₃ and MB⁻CaCO₃ fillers were comparable or even superior than the conventional biodegradable mulch film. The seaweed polymer film incorporated with MB⁻CaCO₃ showed the highest contact angle of 100.94°, whereas conventional biodegradable mulch film showed a contact angle of 90.25°. The enhanced contact angle of MB⁻CaCO₃ resulted in high barrier properties, which is highly desired in the current scenario for plasticulture packaging application. The water vapor permeability of MB⁻CaCO₃ based seaweed films was low (2.05 ± 1.06 g·m/m²·s·Pa) when compared to conventional mulch film (2.68 ± 0.35 g·m/m²·s·Pa), which makes the fabricated film an ideal candidate for plasticulture application. The highest tensile strength (TS) was achieved by seaweed-based film filled with commercial CaCO₃ (84.92% higher than conventional mulch film). SEM images of the fractured surfaces of the fabricated films revealed the strong interaction between seaweed and fillers. Furthermore, composite films incorporated with MB⁻CaCO₃ promote brighter film, better water barrier, hydrophobicity, and biodegradability compared to C⁻CaCO₃ based seaweed polymer film and conventional mulch film. From this demonstrated work, it can be concluded that the fabricated MB⁻CaCO₃ based seaweed biopolymer film will be a promising candidate for plasticulture and agricultural application.
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Affiliation(s)
- Hasan M
- Chemical Education Department, Universitas Syiah Kuala, Jln. Tgk. Daud Beureueh Darussalam Banda Aceh 23311, Indonesia.
| | - E W N Chong
- School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| | - Shima Jafarzadeh
- Food Biopolymer Research Group, Food Technology Division, School of Industrial Technology, University Sains Malaysia, 11800 Minden, Penang, Malaysia.
| | - M T Paridah
- Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, 43300 Serdang, Selangor, Malaysia.
| | - Deepu A Gopakumar
- School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| | - H A Tajarudin
- School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| | - Sabu Thomas
- International and InterUniversity Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam-686560, Kerala, India.
| | - H P S Abdul Khalil
- School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia.
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17
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Neurotrophic Activity of the Carrageenophyte Kappaphycus alvarezii Cultivated at Different Depths and for Different Growth Periods in Various Areas of Indonesia. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:1098076. [PMID: 30420890 PMCID: PMC6211153 DOI: 10.1155/2018/1098076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/17/2018] [Accepted: 09/24/2018] [Indexed: 11/22/2022]
Abstract
The carrageenophyte Kappaphycus alvarezii (Rhodophyta) has neurotrophic activity in primary hippocampal neurons. This seaweed is abundant and easily cultivated in tropical coastal areas. To determine the best growth conditions for neurotrophic activity, thalli were grown at different depths and for different periods in various areas of Indonesia. Neurotrophic activity was measured based on the number of primary neurites, the total length of the primary neurites, and the length of the longest neurite. K. alvarezii had higher neurotrophic activity than carrageenophytes K. striatum and Eucheuma denticulatum cultured under the same conditions. K. alvarezii grown at the surface for 45 days had higher (1.4- to 1.8-fold) neurotrophic activity than thalli grown at depth (2 m) or harvested sooner (15 days) (P < 0.05). Relatively high activities were detected in thalli cultured at Ternate and Garut, Indonesia. Therefore, from a commercial perspective, the culture conditions at the surface for 45 days were optimal for the production of both neurotrophic compounds and carrageenan. K. alvarezii produced neurotrophic compounds under various environmental conditions, although some conditions were optimal.
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18
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Soliman RM, Younis SA, El-Gendy NS, Mostafa SSM, El-Temtamy SA, Hashim AI. Batch bioethanol production via the biological and chemical saccharification of some Egyptian marine macroalgae. J Appl Microbiol 2018; 125:422-440. [PMID: 29675837 DOI: 10.1111/jam.13886] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/28/2018] [Accepted: 03/30/2018] [Indexed: 11/27/2022]
Abstract
AIMS Marine seaweeds (macroalgae) cause an eutrophication problem and affects the touristic activities. The success of the production of the third-generation bioethanol from marine macroalgae depends mainly on the development of an ecofriendly and eco-feasible pretreatment (i.e. hydrolysis) technique, a highly effective saccharification step and finally an efficient bioethanol fermentation step. Therefore, this study aimed to investigate the potentiality of different marine macroalgal strains, collected from Egyptian coasts, for bioethanol production via different saccharification processes. METHODS AND RESULTS Different marine macroalgal strains, red Jania rubens, green Ulva lactuca and brown Sargassum latifolium, have been collected from Egyptian Mediterranean and Red Sea shores. Different hydrolysis processes were evaluated to maximize the extraction of fermentable sugars; thermochemical hydrolysis with diluted acids (HCl and H2 SO4 ) and base (NaOH), hydrothermal hydrolysis followed by saccharification with different fungal strains and finally, thermochemical hydrolysis with diluted HCl, followed by fungal saccharification. The hydrothermal hydrolysis of S. latifolium followed by biological saccharification using Trichoderma asperellum RM1 produced maximum total sugars of 510 mg g-1 macroalgal biomass. The integration of the hydrothermal and fungal hydrolyses of the macroalgal biomass with a separate batch fermentation of the produced sugars using two Saccharomyces cerevisiae strains, produced approximately 0·29 g bioethanol g-1 total reducing sugars. A simulated regression modelling for the batch bioethanol fermentation was also performed. CONCLUSIONS This study supported the possibility of using seaweeds as a renewable source of bioethanol throughout a suggested integration of macroalgal biomass hydrothermal and fungal hydrolyses with a separate batch bioethanol fermentation process of the produced sugars. SIGNIFICANCE AND IMPACT OF THE STUDY The usage of marine macroalgae (i.e. seaweeds) as feedstock for bioethanol; an alternative and/or complimentary to petro-fuel, would act as triple fact solution; bioremediation process for ecosystem, renewable energy source and economy savings.
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Affiliation(s)
- R M Soliman
- Process Development Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
| | - S A Younis
- Analysis and Evaluation Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
| | - N Sh El-Gendy
- Process Development Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
| | - S S M Mostafa
- Microbiology Department, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
| | - S A El-Temtamy
- Process Development Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
| | - A I Hashim
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
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19
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Wanyonyi S, du Preez R, Brown L, Paul NA, Panchal SK. Kappaphycus alvarezii as a Food Supplement Prevents Diet-Induced Metabolic Syndrome in Rats. Nutrients 2017; 9:E1261. [PMID: 29149029 PMCID: PMC5707733 DOI: 10.3390/nu9111261] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/10/2017] [Accepted: 11/13/2017] [Indexed: 12/30/2022] Open
Abstract
The red seaweed, Kappaphycus alvarezii, was evaluated for its potential to prevent signs of metabolic syndrome through use as a whole food supplement. Major biochemical components of dried Kappaphycus are carrageenan (soluble fiber ~34.6%) and salt (predominantly potassium (K) 20%) with a low overall energy content for whole seaweed. Eight to nine week old male Wistar rats were randomly divided into three groups and fed for 8 weeks on a corn starch diet, a high-carbohydrate, high-fat (H) diet, alone or supplemented with a 5% (w/w) dried and milled Kappaphycus blended into the base diet. H-fed rats showed symptoms of metabolic syndrome including increased body weight, total fat mass, systolic blood pressure, left ventricular collagen deposition, plasma triglycerides, and plasma non-esterified fatty acids along with fatty liver. Relative to these obese rats, Kappaphycus-treated rats showed normalized body weight and adiposity, lower systolic blood pressure, improved heart and liver structure, and lower plasma lipids, even in presence of H diet. Kappaphycus modulated the balance between Firmicutes and Bacteroidetes in the gut, which could serve as the potential mechanism for improved metabolic variables; this was accompanied by no damage to the gut structure. Thus, whole Kappaphycus improved cardiovascular, liver, and metabolic parameters in obese rats.
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Affiliation(s)
- Stephen Wanyonyi
- Functional Foods Research Group, Institute for Agriculture and the Environment, University of Southern Queensland, Toowoomba, QLD 4350, Australia.
| | - Ryan du Preez
- Functional Foods Research Group, Institute for Agriculture and the Environment, University of Southern Queensland, Toowoomba, QLD 4350, Australia.
- School of Health and Wellbeing, University of Southern Queensland, Toowoomba, QLD 4350, Australia.
| | - Lindsay Brown
- Functional Foods Research Group, Institute for Agriculture and the Environment, University of Southern Queensland, Toowoomba, QLD 4350, Australia.
- School of Health and Wellbeing, University of Southern Queensland, Toowoomba, QLD 4350, Australia.
| | - Nicholas A Paul
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore, QLD 4558, Australia.
| | - Sunil K Panchal
- Functional Foods Research Group, Institute for Agriculture and the Environment, University of Southern Queensland, Toowoomba, QLD 4350, Australia.
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20
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Shapumba CW, Knott M, Kapewangolo P. Antioxidant activity of a halogenated monoterpene isolated from a Namibian marine algal Plocamium species. Journal of Food Science and Technology 2017; 54:3370-3373. [PMID: 28974823 DOI: 10.1007/s13197-017-2784-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 06/15/2017] [Accepted: 07/28/2017] [Indexed: 10/19/2022]
Abstract
The antioxidant potential of various marine natural products is well documented. The aim of this study was to evaluate the antioxidant potential of a rare halogenated monoterpene, namely; 1E,3R,4S,5E,7Z-1-bromo-3,4,8-trichloro-7-(dichloromethyl)-3-methylocta-1,5,7-triene (1) for the first time. This compound was isolated from a Namibian red algal Plocamium species. The antioxidant activity of the compound was evaluated using a series of antioxidant assays, namely; 2,2-diphenyl-1-picryl-hydrazyl radical (DPPH), reducing power, nitric oxide (NO) and hydrogen peroxide (H2O2). The compound demonstrated remarkable DPPH, NO and H2O2 scavenging activities with IC50 values of 0.05 ± 0.01, 4.18 ± 0.22 and 5.58 ± 1.11 mM, respectively. The reducing power of the compound increased with an increase in concentration. These results were compared to the absorbance of ascorbic acid, which was used as a standard control in all the antioxidant assays. The results strongly suggest that compound 1 is a promising antioxidant agent with potential commercial applications.
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Affiliation(s)
- Christ W Shapumba
- Department of Chemistry and Biochemistry, Faculty of Science, University of Namibia, P/Bag 13301, Windhoek, Namibia
| | - Michael Knott
- School of Pharmacy, University of Namibia, P/Bag 13301, Windhoek, Namibia
| | - Petrina Kapewangolo
- Department of Chemistry and Biochemistry, Faculty of Science, University of Namibia, P/Bag 13301, Windhoek, Namibia
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