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Urdanpilleta M, Leceta I, Guerrero P, de la Caba K. Sustainable Sheep Wool/Soy Protein Biocomposites for Sound Absorption. Polymers (Basel) 2022; 14:polym14235231. [PMID: 36501630 PMCID: PMC9740274 DOI: 10.3390/polym14235231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 11/24/2022] [Accepted: 11/28/2022] [Indexed: 12/04/2022] Open
Abstract
The wool fibers of the Latxa sheep breed were combined with a soy protein isolate (SPI) matrix to develop sustainable biocomposites with acoustic properties, adding value to Latxa sheep wool, which is currently considered a residue. Samples with 7, 10, 15, and 20 wt % wool were prepared by freeze drying in order to develop porous structures, as shown by SEM analysis. Additionally, XRD analysis provided the evidence of a change toward a more amorphous structure with the incorporation of wool fibers due to the interactions between the soy protein and keratin present in wool fibers, as shown by the relative intensity changes in the FTIR bands. The biocomposites were analyzed in a Kundt's tube to obtain their sound absorption coefficient at normal incidence. The results showed an acoustic absorption coefficient that well-surpassed 0.9 for frequencies above 1000 Hz. This performance is comparable to that of the conventional synthetic materials present in the market and, thus, sheep wool/SPI biocomposites are suitable to be used as acoustic absorbers in the building industry, highlighting the potential of replacing not only synthetic fibers but also synthetic polymers, with natural materials to enhance the sustainability of the building sector.
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Affiliation(s)
- Marta Urdanpilleta
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Department of Applied Physics, Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Itsaso Leceta
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Department of Applied Mathematics, Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Pedro Guerrero
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Department of Chemical and Environment Engineering, Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- Proteinmat Materials SL, Avenida de Tolosa 72, 20018 Donostia-San Sebastián, Spain
| | - Koro de la Caba
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Department of Chemical and Environment Engineering, Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- Correspondence:
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Garrido T, Gizdavic-Nikolaidis M, Leceta I, Urdanpilleta M, Guerrero P, de la Caba K, Kilmartin PA. Optimizing the extraction process of natural antioxidants from chardonnay grape marc using microwave-assisted extraction. Waste Manag 2019; 88:110-117. [PMID: 31079623 DOI: 10.1016/j.wasman.2019.03.031] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/01/2019] [Accepted: 03/16/2019] [Indexed: 05/25/2023]
Abstract
The aim of this work was to extract phenolic compounds from Chardonnay grape marc employing a microwave-assisted extraction (MAE). Firstly, the effect of solvent concentration (30-60%), solid mass (1.0-2.0 g) and extraction time (5-15 min) on the recovery of phenolic content and antioxidant capacity was evaluated using a response surface methodology (RSM). The optimal parameters found by RSM were 48% ethanol for the solvent content, 10 min for the extraction time, and 1.77 g for the solid mass. The extraction was carried out at room temperature to increase scaling-up opportunities at industrial level. It was found that the phenolic profile was mainly composed of flavanols, such as procyanidins, catechin and epicatechin. Furthermore, the polyphenols obtained by MAE showed a DPPH· inhibition value of 87 ± 5% and the total phenolic content was 1.21 ± 0.04 mg GAE/mL. Finally, it was observed that the degradation temperature of the extract (≈ 200 °C) was above the temperature commonly used for the manufacture of protein films by thermo-mechanical processes. This highlights the potential use of this extract as a bioactive additive in protein film forming formulations for food and pharmaceutical applications.
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Affiliation(s)
- Tania Garrido
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Department of Chemical and Environmental Engineering, Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
| | | | - Itsaso Leceta
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Department of Applied Mathematics, Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Marta Urdanpilleta
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Department of Applied Physics I, Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Pedro Guerrero
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Department of Chemical and Environmental Engineering, Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Koro de la Caba
- BIOMAT Research Group, University of the Basque Country (UPV/EHU), Department of Chemical and Environmental Engineering, Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain.
| | - Paul A Kilmartin
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand.
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Leceta I, Urdanpilleta M, Zugasti I, Guerrero P, de la Caba K. Assessment of gallic acid-modified fish gelatin formulations to optimize the mechanical performance of films. Int J Biol Macromol 2018; 120:2131-2136. [DOI: 10.1016/j.ijbiomac.2018.09.081] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 09/08/2018] [Accepted: 09/13/2018] [Indexed: 02/07/2023]
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Garrido T, Leceta I, de la Caba K, Guerrero P. Chicken feathers as a natural source of sulphur to develop sustainable protein films with enhanced properties. Int J Biol Macromol 2018; 106:523-531. [PMID: 28801097 DOI: 10.1016/j.ijbiomac.2017.08.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/02/2017] [Accepted: 08/05/2017] [Indexed: 10/19/2022]
Abstract
In this work, the effect of hydrolyzed keratin on the properties of soy protein-based films was analyzed when different manufacture processes were employed. It is widely known that the processing method selected can affect the film properties as a function of the structure obtained during the film formation. Therefore, the assessment of hydrolyzed keratin/soy protein films processed by casting and compression moulding was carried out by means of the analysis of physicochemical, thermal, mechanical, optical and surface properties. It was observed that the incorporation of hydrolyzed keratin, obtained from a simpler, environmentally friendlier and more sustainable extraction method, resulted in the improvement of the thermal stability of the films, irrespective of the processing method employed. Moreover, the films processed by compression moulding showed enhanced tensile strength, which increased with the incorporation of hydrolyzed keratin due to the formation of disulfide bonds.
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Affiliation(s)
- Tania Garrido
- BIOMAT Research Group, Department of Chemical and Environmental Engineering, Engineering College of Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Itsaso Leceta
- BIOMAT Research Group, Department of Applied Mathematics, Engineering College of Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Koro de la Caba
- BIOMAT Research Group, Department of Chemical and Environmental Engineering, Engineering College of Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain
| | - Pedro Guerrero
- BIOMAT Research Group, Department of Chemical and Environmental Engineering, Engineering College of Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain.
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Garrido T, Leceta I, Cabezudo S, Guerrero P, de la Caba K. Tailoring soy protein film properties by selecting casting or compression as processing methods. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.11.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Uranga J, Leceta I, Etxabide A, Guerrero P, de la Caba K. Cross-linking of fish gelatins to develop sustainable films with enhanced properties. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.03.017] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Leceta I, Peñalba M, Arana P, Guerrero P, de la Caba K. Ageing of chitosan films: Effect of storage time on structure and optical, barrier and mechanical properties. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.02.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Guerrero P, Garrido T, Leceta I, de la Caba K. Films based on proteins and polysaccharides: Preparation and physical–chemical characterization. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.08.014] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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