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Alves LTDO, Fronza P, Gonçalves I, da Silva WA, Oliveira LS, Franca AS. Development of Polymeric Films Based on Sunflower Seed Proteins and Locust Bean Gum. Polymers (Basel) 2024; 16:1905. [PMID: 39000760 PMCID: PMC11244352 DOI: 10.3390/polym16131905] [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: 04/18/2024] [Revised: 06/27/2024] [Accepted: 07/01/2024] [Indexed: 07/17/2024] Open
Abstract
Most polymeric food packaging materials are non-biodegradable and derived from petroleum, thus recent studies have focused on evaluating alternative biodegradable materials from renewable sources, with polysaccharides and proteins as the main types of employed biopolymers. Therefore, this study aimed to develop biopolymeric films based on sunflower proteins and galactomannans from locust bean gum. The influence of the galactomannan amount (0.10%, 0.30%, 0.50%, and 0.75% w/v) on the physicochemical, thermal, and mechanical properties of cast sunflower protein-based films was studied. Sunflower proteins gave rise to yellowish, shining, and translucid films. With the incorporation of locust bean gum-derived galactomannans, the films became more brown and opaque, although they still maintained some translucency. Galactomannans significantly changed the proteins' secondary structures, giving rise to films with increased tensile resistance and stretchability. Nevertheless, the increase in the galactomannan amount did not have a significant effect on the film's thermal stability. The protein/galactomannan-based films showed values of water vapor and oxygen permeability that were slightly higher than those of the pristine materials. Overall, blending locust bean gum galactomannans with sunflower proteins was revealed to be a promising strategy to develop naturally colored and translucid films with enhanced mechanical resistance while maintaining flexibility, fitting the desired properties for biodegradable food packaging materials.
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Affiliation(s)
- Layla Talita de Oliveira Alves
- Programa de Pós-Graduação em Ciência de Alimentos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil; (L.T.d.O.A.); (P.F.); (L.S.O.)
| | - Pãmella Fronza
- Programa de Pós-Graduação em Ciência de Alimentos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil; (L.T.d.O.A.); (P.F.); (L.S.O.)
| | - Idalina Gonçalves
- CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Washington Azevêdo da Silva
- Departamento de Engenharia de Alimentos, Universidade Federal de São João Del-Rei, Rodovia MG 424, km 47, Campus Sete Lagoas, Sete Lagoas 35701-970, MG, Brazil;
| | - Leandro S. Oliveira
- Programa de Pós-Graduação em Ciência de Alimentos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil; (L.T.d.O.A.); (P.F.); (L.S.O.)
- Departamento de Engenharia Mecânica, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
| | - Adriana S. Franca
- Programa de Pós-Graduação em Ciência de Alimentos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil; (L.T.d.O.A.); (P.F.); (L.S.O.)
- Departamento de Engenharia Mecânica, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
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Zhang S, Zhong X, Chen J, Nilghaz A, Yun X, Wan X, Tian J. Manufacturing biodegradable lignocellulosic films with tunable properties from spent coffee grounds: A sustainable alternative to plastics. Int J Biol Macromol 2024; 273:132918. [PMID: 38844282 DOI: 10.1016/j.ijbiomac.2024.132918] [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: 01/30/2024] [Revised: 05/17/2024] [Accepted: 06/03/2024] [Indexed: 06/18/2024]
Abstract
Manufacturing biodegradable lignocellulosic films from spent coffee grounds (SCG) as an alternative to commercial plastics is a viable solution to address plastic pollution. Here, the biodegradable lignocellulosic films from SCG were fabricated via a sequential alkaline treatment and ionic liquid-based dissolution process. The alkaline treatment process could swell the cell wall of SCG, change its carbohydrates and lignin contents, and enhance its solubility in ionic liquids. The prepared SCG films with different lignin contents exhibited outstanding UV blocking capability (42.07-99.99 % for UVB and 20.96-99.99 % for UVA) and light scattering properties, good surface hydrophobicity (water contact angle = 63.2°-88.7°), enhanced water vapor barrier property (2.28-6.79 × 10-12 g/m·s·Pa), and good thermal stability. Moreover, the SCG films exhibit excellent mechanical strength (50.10-81.56 MPa, tensile strength) and biodegradability (fully degraded within 30 days when buried in soil) compared to commercial plastic. The SCG films represent a promising alternative that can replace non-biodegradable plastics.
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Affiliation(s)
- Shaokai Zhang
- State Key Lab of Pulp and Papermaking Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Xin Zhong
- State Key Lab of Pulp and Papermaking Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Junyu Chen
- State Key Lab of Pulp and Papermaking Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Azadeh Nilghaz
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Xueyan Yun
- College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Xiaofang Wan
- State Key Lab of Pulp and Papermaking Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Junfei Tian
- State Key Lab of Pulp and Papermaking Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China.
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Chen Y, Guo R, Ma F, Zhou H, Zhang M, Ma Q. Effect of Coffee Grounds/Coffee Ground Biochar on Cement Hydration and Adsorption Properties. MATERIALS (BASEL, SWITZERLAND) 2024; 17:907. [PMID: 38399158 PMCID: PMC10890603 DOI: 10.3390/ma17040907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/08/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024]
Abstract
Taking advantage of the strong adsorption characteristics of coffee grounds (CGs) and coffee ground biochar (CGB), this research employed equal amounts of 2%, 4%, 6%, and 8% CGs and CGB to replace cement. This study thereby examined the impacts of CGs and CGB on cement compressive strength, as well as their abilities to adsorb chloride ions and formaldehyde. X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TG-DTG), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) were employed to investigate the hydration mechanism and characterize the microscopic structure. The results show the following: (1) The presence of a substantial quantity of organic compounds in CGs is found to have an adverse effect on both the compressive strength and hydration degree of the sample. The use of CGB after high-temperature pyrolysis of phosphoric acid can effectively improve the negative impact of organic compounds on the sample. (2) The addition of CGs reduces the adsorption of chloride ions by cement, primarily due to the presence of fewer hydration products. However, when CGB was incorporated into cement, it enhanced the ability to adsorb chloride ions. (3) Cement containing 8% CGB content can slightly enhance the adsorption of formaldehyde. However, the cement sample with 8% CGB content exhibited the most significant ability to adsorb formaldehyde.
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Affiliation(s)
- Yang Chen
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China; (Y.C.); (R.G.); (F.M.); (H.Z.); (M.Z.)
- Yunnan Key Laboratory of Disaster Reduction in Civil Engineering, Kunming 650500, China
- International Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province, Kunming 650500, China
| | - Rongxin Guo
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China; (Y.C.); (R.G.); (F.M.); (H.Z.); (M.Z.)
- Yunnan Key Laboratory of Disaster Reduction in Civil Engineering, Kunming 650500, China
- International Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province, Kunming 650500, China
| | - Feiyue Ma
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China; (Y.C.); (R.G.); (F.M.); (H.Z.); (M.Z.)
- Yunnan Key Laboratory of Disaster Reduction in Civil Engineering, Kunming 650500, China
- International Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province, Kunming 650500, China
| | - Haoxue Zhou
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China; (Y.C.); (R.G.); (F.M.); (H.Z.); (M.Z.)
- Yunnan Key Laboratory of Disaster Reduction in Civil Engineering, Kunming 650500, China
- International Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province, Kunming 650500, China
| | - Miao Zhang
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China; (Y.C.); (R.G.); (F.M.); (H.Z.); (M.Z.)
- Yunnan Key Laboratory of Disaster Reduction in Civil Engineering, Kunming 650500, China
- International Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province, Kunming 650500, China
| | - Qianmin Ma
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China; (Y.C.); (R.G.); (F.M.); (H.Z.); (M.Z.)
- Yunnan Key Laboratory of Disaster Reduction in Civil Engineering, Kunming 650500, China
- International Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province, Kunming 650500, China
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Zhang S, Zhang X, Wan X, Zhang H, Tian J. Fabrication of biodegradable films with UV-blocking and high-strength properties from spent coffee grounds. Carbohydr Polym 2023; 321:121290. [PMID: 37739526 DOI: 10.1016/j.carbpol.2023.121290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/31/2023] [Accepted: 08/09/2023] [Indexed: 09/24/2023]
Abstract
Utilizing spent coffee grounds (SCG) to produce high value-added materials is attractive and meaningful. In this work, a multi-functional biomass film is prepared from SCG and dissolving pulp through a dissolution and regeneration process. Importantly, dissolving pulp as a reinforcing additive can significantly enhance the mechanical strength of the regenerated SCG film. The prepared composite films with SCG contents ranging from 33.33 wt% to 81.82 wt% demonstrate excellent optical and mechanical properties. The composite film with 66.67 wt% SCG exhibits outstanding UV blocking capability (99.43 % for UVB and 96.59 % for UVA) and high haze (69.22%); meanwhile, the composite film with 33.33 wt% SCG performs better mechanical strength (58.69 MPa tensile strength and 3.13 GPa Young's modulus) and superior biodegradability (fully degraded within 26 days by being buried in soil) than commercial plastic. This work generally introduces a facile and practical approach to converting waste SCG into promising materials in various fields.
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Affiliation(s)
- Shaokai Zhang
- State Key Lab of Pulp and Papermaking Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Xue Zhang
- State Key Lab of Pulp and Papermaking Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China; China National Pulp and Paper Research Institute Co., Ltd., Beijing 100102, China
| | - Xiaofang Wan
- State Key Lab of Pulp and Papermaking Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Hongjie Zhang
- China National Pulp and Paper Research Institute Co., Ltd., Beijing 100102, China.
| | - Junfei Tian
- State Key Lab of Pulp and Papermaking Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China.
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Günal-Köroğlu D, Erskine E, Ozkan G, Capanoglu E, Esatbeyoglu T. Applications and safety aspects of bioactives obtained from by-products/wastes. ADVANCES IN FOOD AND NUTRITION RESEARCH 2023; 107:213-261. [PMID: 37898541 DOI: 10.1016/bs.afnr.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/30/2023]
Abstract
Due to the negative impacts of food loss and food waste on the environment, economy, and social contexts, it is a necessity to take action in order to reduce these wastes from post-harvest to distribution. In addition to waste reduction, bioactives obtained from by-products or wastes can be utilized by new end-users by considering the safety aspects. It has been reported that physical, biological, and chemical safety features of raw materials, instruments, environment, and processing methods should be assessed before and during valorization. It has also been indicated that meat by-products/wastes including collagen, gelatin, polysaccharides, proteins, amino acids, lipids, enzymes and chitosan; dairy by-products/wastes including whey products, buttermilk and ghee residue; fruit and vegetable by-products/wastes such as pomace, leaves, skins, seeds, stems, seed oils, gums, fiber, polyphenols, starch, cellulose, galactomannan, pectin; cereal by-products/wastes like vitamins, dietary fibers, fats, proteins, starch, husk, and trub have been utilized as animal feed, food supplements, edible coating, bio-based active packaging systems, emulsifiers, water binders, gelling, stabilizing, foaming or whipping agents. This chapter will explain the safety aspects of bioactives obtained from various by-products/wastes. Additionally, applications of bioactives obtained from by-products/wastes have been included in detail by emphasizing the source, form of bioactive compound as well as the effect of said bioactive compound.
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Affiliation(s)
- Deniz Günal-Köroğlu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak, Istanbul, Turkey
| | - Ezgi Erskine
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak, Istanbul, Turkey
| | - Gulay Ozkan
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak, Istanbul, Turkey
| | - Esra Capanoglu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak, Istanbul, Turkey
| | - Tuba Esatbeyoglu
- Institute of Food Science and Human Nutrition, Department of Food Development and Food Quality, Gottfried Wilhelm Leibniz University Hannover, Am Kleinen Felde, Hannover, Germany.
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Ozkan G, Günal-Köroğlu D, Capanoglu E. Valorization of fruit and vegetable processing by-products/wastes. ADVANCES IN FOOD AND NUTRITION RESEARCH 2023; 107:1-39. [PMID: 37898537 DOI: 10.1016/bs.afnr.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/30/2023]
Abstract
Fruit and vegetable processing by-products and wastes are of great importance due to their high production volumes and their composition containing different functional compounds. Particularly, apple, grape, citrus, and tomato pomaces, potato peel, olive mill wastewater, olive pomace and olive leaves are the main by-products that are produced during processing. Besides conventional techniques, ultrasound-assisted extraction, microwave-assisted extraction, pressurized liquid extraction (sub-critical water extraction), supercritical fluid extraction, enzyme-assisted extraction, and fermentation are emerging tools for the recovery of target compounds. On the other hand, in the view of valorization, it is possible to use them in active packaging applications, as a source of bioactive compound (oil, phenolics, carotenoids), as functional ingredients and as biofertilizer and biogas sources. This chapter explains the production of fruit and vegetable processing by-products/wastes. Moreover, the valorization of functional compounds recovered from the fruit and vegetable by-products and wastes is evaluated in detail by emphasizing the type of the by-products/wastes, functional compounds obtained from these by-products/wastes, their extraction conditions and application areas.
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Affiliation(s)
- Gulay Ozkan
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak, Istanbul, Turkey.
| | - Deniz Günal-Köroğlu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak, Istanbul, Turkey
| | - Esra Capanoglu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak, Istanbul, Turkey
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Batista MJPA, Marques MBF, Franca AS, Oliveira LS. Development of Films from Spent Coffee Grounds' Polysaccharides Crosslinked with Calcium Ions and 1,4-Phenylenediboronic Acid: A Comparative Analysis of Film Properties and Biodegradability. Foods 2023; 12:2520. [PMID: 37444258 DOI: 10.3390/foods12132520] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/05/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023] Open
Abstract
Most polymeric materials are synthetic and derived from petroleum, hence they accumulate in landfills or the ocean, and recent studies have focused on alternatives to replace them with biodegradable materials from renewable sources. Biodegradable wastes from food and agroindustry, such as spent coffee grounds (SCGs), are annually discarded on a large scale and are rich in organic compounds, such as polysaccharides, that could be used as precursors to produce films. Around 6.5 million tons of SCGs are discarded every year, generating an environmental problem around the world. Therefore, it was the aim of this work to develop films from the SCGs polysaccharide fraction, which is comprised of cellulose, galactomannans and arabinogalactans. Two types of crosslinking were performed: the first forming coordination bonds of calcium ions with polysaccharides; and the second through covalent bonds with 1,4-phenylenediboronic acid (PDBA). The films with Ca2+ ions exhibited a greater barrier to water vapor with a reduction of 44% of water permeability vapor and 26% greater tensile strength than the control film (without crosslinkers). Films crosslinked with PDBA presented 55-81% higher moisture contents, 85-125% greater permeability to water vapor and 67-150% larger elongations at break than the films with Ca2+ ions. Film biodegradability was demonstrated to be affected by the crosslinking density, with the higher the crosslinking density, the longer the time for the film to fully biodegrade. The results are promising and suggest that future research should focus on enhancing the properties of these films to expand the range of possible applications.
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Affiliation(s)
- Michelle J P A Batista
- PPGCA, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
| | - M Betânia F Marques
- DQ, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
| | - Adriana S Franca
- PPGCA, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
- DEMEC, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
| | - Leandro S Oliveira
- PPGCA, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
- DEMEC, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
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Beigtan M, Hwang Y, Weon BM. Inhibiting Cracks in Latte Droplets. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5275-5283. [PMID: 37026986 DOI: 10.1021/acs.langmuir.2c03183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Latte is a mixture of coffee and milk and a model of complex fluids containing biomolecules, usually leaving complex deposit patterns after droplet evaporation. Despite the universality and applicability of biofluids, their evaporation and deposition dynamics are not fully understood and controllable because of the complexity of their components. Here we investigate latte droplet evaporation and deposition dynamics, primarily the crack development and inhibition in droplet deposit patterns. With regard to a mixture of milk and coffee, we find that the surfactant-like nature of milk and intermolecular interactions between coffee particles and milk bioparticles are responsible for achieving uniform crack-free deposits. This finding improves our understanding of pattern formation from evaporating droplets with complex biofluids, offering a clue to applications of bioinks with both printability and biocompatibility.
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Affiliation(s)
- Mohadese Beigtan
- Soft Matter Physics Laboratory, School of Advanced Materials Science and Engineering, SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, South Korea
| | - Yohan Hwang
- College of General Education, Seoul Women's University, Seoul 01797, South Korea
| | - Byung Mook Weon
- Soft Matter Physics Laboratory, School of Advanced Materials Science and Engineering, SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, South Korea
- Research Center for Advanced Materials Technology, Sungkyunkwan University, Suwon 16419, South Korea
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Antioxidant and ultraviolet shielding performance of lignin-polysaccharide complex isolated from spent coffee ground. Int J Biol Macromol 2023; 230:123245. [PMID: 36639080 DOI: 10.1016/j.ijbiomac.2023.123245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/20/2022] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
Spent coffee ground (SCG) is a representative type of biomass waste with huge annual output. To better develop high value applications of SCG, in this study, the lignin-polysaccharide complex (LPC) was isolated from SCG by applying effective ball milling and the subsequent solvent extraction of 96 % 1, 4-dioxane aqueous solution. In addition to the comprehensive analyses of the obtained LPC regarding its chemical composition, surface morphology, molecular weight distribution, characteristic functional groups, surface chemical linkages, and thermal stability, its potentials in radical scavenging and UV shielding had been emphatically investigated. As revealed from the results, a proper duration (e.g., 4 h) of UV irradiation could evidently enhance the radical-scavenging capacity of LPC, ascribed to the increasing number of antioxidant groups. Moreover, the LPC-containing composite sunscreens also exhibited strengthened UV resistance after UV irradiation, which may benefit from the UV-induced conjugated structures and the π-π stacking of aromatic rings from both LPC and the active ingredients in commercial sunscreen. Therefore, LPC is highly promising to be exploited for the development of novel antioxidants and UV-shielding products, by virtue of its characteristic chemical structure and potential synergistic effect with other active ingredients from the composite.
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Bevilacqua E, Cruzat V, Singh I, Rose’Meyer RB, Panchal SK, Brown L. The Potential of Spent Coffee Grounds in Functional Food Development. Nutrients 2023; 15:nu15040994. [PMID: 36839353 PMCID: PMC9963703 DOI: 10.3390/nu15040994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 02/09/2023] [Accepted: 02/12/2023] [Indexed: 02/18/2023] Open
Abstract
Coffee is a popular and widely consumed beverage worldwide, with epidemiological studies showing reduced risk of cardiovascular disease, cancers and non-alcoholic fatty liver disease. However, few studies have investigated the health effects of the post-brewing coffee product, spent coffee grounds (SCG), from either hot- or cold-brew coffee. SCG from hot-brew coffee improved metabolic parameters in rats with diet-induced metabolic syndrome and improved gut microbiome in these rats and in humans; further, SCG reduced energy consumption in humans. SCG contains similar bioactive compounds as the beverage including caffeine, chlorogenic acids, trigonelline, polyphenols and melanoidins, with established health benefits and safety for human consumption. Further, SCG utilisation could reduce the estimated 6-8 million tonnes of waste each year worldwide from production of coffee as a beverage. In this article, we explore SCG as a major by-product of coffee production and consumption, together with the potential economic impacts of health and non-health applications of SCG. The known bioactive compounds present in hot- and cold-brew coffee and SCG show potential effects in cardiovascular disease, cancer, liver disease and metabolic disorders. Based on these potential health benefits of SCG, it is expected that foods including SCG may moderate chronic human disease while reducing the environmental impact of waste otherwise dumped in landfill.
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Affiliation(s)
- Elza Bevilacqua
- School of Pharmacy and Medical Sciences, Griffith University, Gold Coast, QLD 4222, Australia
| | - Vinicius Cruzat
- Faculty of Health, Southern Cross University, Gold Coast, QLD 4225, Australia
| | - Indu Singh
- School of Pharmacy and Medical Sciences, Griffith University, Gold Coast, QLD 4222, Australia
| | - Roselyn B. Rose’Meyer
- School of Pharmacy and Medical Sciences, Griffith University, Gold Coast, QLD 4222, Australia
| | - Sunil K. Panchal
- School of Science, Western Sydney University, Richmond, NSW 2753, Australia
| | - Lindsay Brown
- School of Pharmacy and Medical Sciences, Griffith University, Gold Coast, QLD 4222, Australia
- Correspondence: ; Tel.: +61-433-062-123
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Batista MJ, Torres SS, Franca AS, Oliveira LS. Effect of Zinc Chloride Solution Assisted by Ultrasound on Polysaccharides of Spent Coffee Grounds. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2023. [DOI: 10.1016/j.carpta.2023.100298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
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12
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Franca AS, Oliveira LS. Potential Uses of Spent Coffee Grounds in the Food Industry. Foods 2022; 11:foods11142064. [PMID: 35885305 PMCID: PMC9316316 DOI: 10.3390/foods11142064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/01/2022] [Accepted: 07/07/2022] [Indexed: 11/23/2022] Open
Abstract
Current estimates place the amount of spent coffee grounds annually generated worldwide in the 6 million ton figure, with the sources of spent coffee grounds being classified as domestic (i.e., household), commercial (i.e., coffee houses, cafeterias and restaurants), and industrial (i.e., soluble and instant coffee industries). The majority of the produced spent coffee grounds are currently being inappropriately destined for landfills or to a form of energy recovery (e.g., incineration) as a refuse-derived fuel. The disposal of spent coffee in landfills allows for its anaerobic degradation with consequent generation and emission of aggressive greenhouse gases such as methane and CO2, and energy recovery processes must be considered an end-of-life stage in the lifecycle of spent coffee grounds, as a way of delaying CO2 emissions and of avoiding emissions of toxic organic volatile compounds generated during combustion of this type of waste. Aside from these environmental issues, an aspect that should be considered is the inappropriate disposal of a product (SCG) that presents unique thermo-mechanical properties and textural characteristics and that is rich in a diversity of classes of compounds, such as polysaccharides, proteins, phenolics, lipids and alkaloids, which could be recovered and used in a diversity of applications, including food-related ones. Therefore, researchers worldwide are invested in studying a variety of possible applications for spent coffee grounds and products thereof, including (but not limited to) biofuels, catalysts, cosmetics, composite materials, feed and food ingredients. Hence, the aim of this essay was to present a comprehensive review of the recent literature on the proposals for utilization of spent coffee grounds in food-related applications, with focus on chemical composition of spent coffee, recovery of bioactive compounds, use as food ingredients and as components in the manufacture of composite materials that can be used in food applications, such as packaging.
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Ma J, Zhang M, Zhang H, Wang Y, Li F, Hu N, Dai Z, Ding Y, Ding D. Efficient removal of U(VI) in acidic environment with spent coffee grounds derived hydrogel. JOURNAL OF HAZARDOUS MATERIALS 2022; 426:127786. [PMID: 34810005 DOI: 10.1016/j.jhazmat.2021.127786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/25/2021] [Accepted: 11/11/2021] [Indexed: 06/13/2023]
Abstract
In this study, humic-like substances (HLSs) was extracted from spent coffee grounds (SCGs), and it together with poly acrylic acid (PAA), was used for the first time to synthesize hydrogel material, namely HLSs/PAA gel, by one-step radical polymerization. Its maximum theoretical sorption capacity toward U(VI) at pH 3.00 was 661.01 mg/g, and it could decrease the concentration of U(VI) in acidic actual groundwater from 0.2537 to 0.0003 mg/L, showing that the gel had excellent U(VI) removal efficiency in acidic environment. The SEM characterization of HLSs/PAA gel showed that its macroporous network structure maintained well after the sorption process, indicating that the gel had excellent acid-resistant property. Moreover, the gel exhibited excellent anti-interference performance in the interfering ions effect experiment. The gel integrates the merits of excellent U(VI) sorption properties, stability and anti-interference performance in acidic environment, and has promising application prospects in the remediation of acidic uranium wastewater.
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Affiliation(s)
- Jianhong Ma
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Min Zhang
- School of Resources, Environment and Safety Engineering, University of South China, Hengyang, Hunan, 421001, China
| | - Hui Zhang
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Yongdong Wang
- School of Resources, Environment and Safety Engineering, University of South China, Hengyang, Hunan, 421001, China
| | - Feng Li
- School of Resources, Environment and Safety Engineering, University of South China, Hengyang, Hunan, 421001, China
| | - Nan Hu
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Zhongran Dai
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Yang Ding
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Dexin Ding
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China.
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14
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Valorization of Spent Coffee Grounds as Precursors for Biopolymers and Composite Production. Polymers (Basel) 2022; 14:polym14030437. [PMID: 35160428 PMCID: PMC8840223 DOI: 10.3390/polym14030437] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 01/27/2023] Open
Abstract
Spent coffee grounds (SCG) are a current subject in many works since coffee is the second most consumed beverage worldwide; however, coffee generates a high amount of waste (SCG) and can cause environmental problems if not discarded properly. Therefore, several studies on SCG valorization have been published, highlighting its waste as a valuable resource for different applications, such as biofuel, energy, biopolymer precursors, and composite production. This review provides an overview of the works using SCG as biopolymer precursors and for polymer composite production. SCG are rich in carbohydrates, lipids, proteins, and minerals. In particular, carbohydrates (polysaccharides) can be extracted and fermented to synthesize lactic acid, succinic acid, or polyhydroxyalkanoate (PHA). On the other hand, it is possible to extract the coffee oil and to synthesize PHA from lipids. Moreover, SCG have been successfully used as a filler for composite production using different polymer matrices. The results show the reasonable mechanical, thermal, and rheological properties of SCG to support their applications, from food packaging to the automotive industry.
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Otoni CG, Azeredo HMC, Mattos BD, Beaumont M, Correa DS, Rojas OJ. The Food-Materials Nexus: Next Generation Bioplastics and Advanced Materials from Agri-Food Residues. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2102520. [PMID: 34510571 DOI: 10.1002/adma.202102520] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/14/2021] [Indexed: 06/13/2023]
Abstract
The most recent strategies available for upcycling agri-food losses and waste (FLW) into functional bioplastics and advanced materials are reviewed and the valorization of food residuals are put in perspective, adding to the water-food-energy nexus. Low value or underutilized biomass, biocolloids, water-soluble biopolymers, polymerizable monomers, and nutrients are introduced as feasible building blocks for biotechnological conversion into bioplastics. The latter are demonstrated for their incorporation in multifunctional packaging, biomedical devices, sensors, actuators, and energy conversion and storage devices, contributing to the valorization efforts within the future circular bioeconomy. Strategies are introduced to effectively synthesize, deconstruct and reassemble or engineer FLW-derived monomeric, polymeric, and colloidal building blocks. Multifunctional bioplastics are introduced considering the structural, chemical, physical as well as the accessibility of FLW precursors. Processing techniques are analyzed within the fields of polymer chemistry and physics. The prospects of FLW streams and biomass surplus, considering their availability, interactions with water and thermal stability, are critically discussed in a near-future scenario that is expected to lead to next-generation bioplastics and advanced materials.
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Affiliation(s)
- Caio G Otoni
- Department of Materials Engineering (DEMa), Federal University of São Carlos (UFSCar), Rod. Washington Luiz, km 235, São Carlos, SP, 13565-905, Brazil
| | - Henriette M C Azeredo
- Embrapa Agroindústria Tropical, Rua Dra. Sara Mesquita 2270, Fortaleza, CE, 60511-110, Brazil
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, Rua XV de Novembro 1452, São Carlos, SP, 13560-970, Brazil
| | - Bruno D Mattos
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, Espoo, FIN-00076, Finland
| | - Marco Beaumont
- Department of Chemistry, University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Str. 24, Tulln, A-3430, Austria
| | - Daniel S Correa
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, Rua XV de Novembro 1452, São Carlos, SP, 13560-970, Brazil
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, Espoo, FIN-00076, Finland
- Bioproducts Institute, Departments of Chemical & Biological Engineering, Chemistry and Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
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16
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Oliveira G, Passos CP, Ferreira P, Coimbra MA, Gonçalves I. Coffee By-Products and Their Suitability for Developing Active Food Packaging Materials. Foods 2021; 10:foods10030683. [PMID: 33806924 PMCID: PMC8005104 DOI: 10.3390/foods10030683] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 01/30/2023] Open
Abstract
The coffee industry generates a wide variety of by-products derived from green coffee processing (pulp, mucilage, parchment, and husk) and roasting (silverskin and spent coffee grounds). All these fractions are simply discarded, despite their high potential value. Given their polysaccharide-rich composition, along with a significant number of other active biomolecules, coffee by-products are being considered for use in the production of plastics, in line with the notion of the circular economy. This review highlights the chemical composition of coffee by-products and their fractionation, evaluating their potential for use either as polymeric matrices or additives for developing plastic materials. Coffee by-product-derived molecules can confer antioxidant and antimicrobial activities upon plastic materials, as well as surface hydrophobicity, gas impermeability, and increased mechanical resistance, suitable for the development of active food packaging. Overall, this review aims to identify sustainable and eco-friendly strategies for valorizing coffee by-products while offering suitable raw materials for biodegradable plastic formulations, emphasizing their application in the food packaging sector.
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Affiliation(s)
- Gonçalo Oliveira
- CICECO–Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal; (G.O.); (P.F.)
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (C.P.P.); (M.A.C.)
| | - Cláudia P. Passos
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (C.P.P.); (M.A.C.)
| | - Paula Ferreira
- CICECO–Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal; (G.O.); (P.F.)
| | - Manuel A. Coimbra
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (C.P.P.); (M.A.C.)
| | - Idalina Gonçalves
- CICECO–Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal; (G.O.); (P.F.)
- Correspondence:
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Alarcon RT, Lamb KJ, Bannach G, North M. Opportunities for the Use of Brazilian Biomass to Produce Renewable Chemicals and Materials. CHEMSUSCHEM 2021; 14:169-188. [PMID: 32975380 DOI: 10.1002/cssc.202001726] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/24/2020] [Indexed: 06/11/2023]
Abstract
This Review highlights the principal crops of Brazil and how their harvest waste can be used in the chemicals and materials industries. The Review covers various plants; with grains, fruits, trees and nuts all being discussed. Native and adopted plants are included and studies on using these plants as a source of chemicals and materials for industrial applications, polymer synthesis, medicinal use and in chemical research are discussed. The main aim of the Review is to highlight the principal Brazilian agricultural resources; such as sugarcane, oranges and soybean, as well as secondary resources, such as andiroba brazil nut, buriti and others, which should be explored further for scientific and technological applications. Furthermore, vegetable oils, carbohydrates (starch, cellulose, hemicellulose, lignocellulose and pectin), flavones and essential oils are described as well as their potential applications.
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Affiliation(s)
- Rafael T Alarcon
- School of Sciences, Department of Chemistry, UNESP- São Paulo State University, Bauru, 17033-260, SP, Brazil
| | - Katie J Lamb
- Green Chemistry Centre of Excellence, Department of Chemistry, The University of York, Heslington, York, YO10 5DD, UK
| | - Gilbert Bannach
- School of Sciences, Department of Chemistry, UNESP- São Paulo State University, Bauru, 17033-260, SP, Brazil
| | - Michael North
- Green Chemistry Centre of Excellence, Department of Chemistry, The University of York, Heslington, York, YO10 5DD, UK
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Coelho GO, Batista MJ, Ávila AF, Franca AS, Oliveira LS. Development and characterization of biopolymeric films of galactomannans recovered from spent coffee grounds. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2020.110083] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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