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Carrillo YS, Ulloa JA, Urías Silvas JE, Ramírez Ramírez JC, Leyva RG. Physicochemical and functional characteristics of a gourd ( Cucurbita argyrosperma Huber) seed protein isolate subjected to high-intensity ultrasound. Heliyon 2024; 10:e32225. [PMID: 38868042 PMCID: PMC11168437 DOI: 10.1016/j.heliyon.2024.e32225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 05/28/2024] [Accepted: 05/29/2024] [Indexed: 06/14/2024] Open
Abstract
The impact of high-intensity ultrasound (HIU, 20 kHz) on the physicochemical and functional characteristics of gourd seed protein isolate (GoSPI) was studied. GoSPI was prepared from oil-free gourd seed flour through alkaline extraction (pH 11) and subsequent isoelectric precipitation (pH 4). The crude protein concentration of GoSPI ranged from 91.56 ± 0.17 % to 95.43 ± 0.18 %. Aqueous suspensions of GoSPI (1:3.5 w/v) were ultrasonicated at powers of 200, 400, and 600 W for 15 and 30 min. Glutelins (76.18 ± 0.15 %) were the major protein fraction in GoSPI. HIU decreased the moisture, ash, ether extract, and nitrogen-free extract contents and the hue angle, available water and a* and b* color parameters of the GoSPI in some treatments. The L* color parameter increased (7.70 %) after ultrasonication. HIU reduced the bulk density (52.63 %) and particle diameter (39.45 %), as confirmed by scanning electron microscopy, indicating that ultrasonication dissociated macromolecular aggregates in GoSPI. These structural changes enhanced the oil retention capacity and foam stability by up to 62.60 and 6.84 %, respectively, while the increases in the solvability, water retention capacity, and emulsifying activity index of GoSPI were 90.10, 19.80, and 43.34 %, respectively. The gelation, foaming capacity, and stability index of the emulsion showed no improvement due to HIU. HIU altered the secondary structure of GoSPI by decreasing the content of α-helices (49.66 %) and increasing the content of β-sheets (52.00 %) and β-turns (65.00 %). The electrophoretic profile of the GoSPI was not changed by HIU. The ultrasonicated GoSPI had greater functional attributes than those of the control GoSPI and could therefore be used as a functional food component.
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Affiliation(s)
- Yessica Silva Carrillo
- Programa de Doctorado en Ciencias Biológico Agropecuarias, Universidad Autónoma de Nayarit, Carretera Tepic-Compostela, Km 9, 63780, Xalisco, Nayarit, Mexico
| | - José Armando Ulloa
- Programa de Doctorado en Ciencias Biológico Agropecuarias, Universidad Autónoma de Nayarit, Carretera Tepic-Compostela, Km 9, 63780, Xalisco, Nayarit, Mexico
- Centro de Tecnología de Alimentos, Universidad Autónoma de Nayarit, Ciudad de la Cultura Amado Nervo, 63155, Tepic, Nayarit, Mexico
| | - Judith Esmeralda Urías Silvas
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C., Camino Arenero 1227, El Bajío, 45019, Zapopan, Jalisco, Mexico
| | - José Carmen Ramírez Ramírez
- Unidad Académica de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nayarit, Carretera Compostela-Chapalilla, Km 3.5, 63700, Compostela, Nayarit, Mexico
| | - Ranferi Gutiérrez Leyva
- Unidad Académica de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nayarit, Carretera Compostela-Chapalilla, Km 3.5, 63700, Compostela, Nayarit, Mexico
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López-Mártir KU, Armando Ulloa J, Urías-Silvas JE, Rosas-Ulloa P, Ramírez-Ramírez JC, Resendiz-Vazquez JA. Modification of the physicochemical, functional, biochemical and structural properties of a soursop seed (Annona muricata L.) protein isolate treated with high-intensity ultrasound. ULTRASONICS SONOCHEMISTRY 2024; 105:106870. [PMID: 38579570 PMCID: PMC11004696 DOI: 10.1016/j.ultsonch.2024.106870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 03/09/2024] [Accepted: 04/02/2024] [Indexed: 04/07/2024]
Abstract
The obtained seeds from fruit processing are considered by-products containing proteins that could be utilized as ingredients in food manufacturing. However, in the specific case of soursop seeds, their usage for the preparation of protein isolates is limited. In this investigation a protein isolate from soursop seeds (SSPI) was obtained by alkaline extraction and isoelectric precipitation methods. The SSPI was sonicated at 200, 400 and 600 W during 15 and 30 min and its effect on the physicochemical, functional, biochemical, and structural properties was evaluated. Ultrasound increased (p < 0.05) up to 5 % protein content, 261 % protein solubility, 60.7 % foaming capacity, 30.2 % foaming stability, 86 % emulsifying activity index, 4.1 % emulsifying stability index, 85.4 % in vitro protein digestibility, 423.4 % albumin content, 83 % total sulfhydryl content, 316 % free sulfhydryl content, 236 % α-helix, 46 % β-sheet, and 43 % β-turn of SSPI, in comparison with the control treatment without ultrasound. Furthermore, ultrasound decreased (p < 0.05) up to 50 % particle size, 37 % molecular flexibility, 68 % surface hydrophobicity, 41 % intrinsic florescence spectrum, and 60 % random coil content. Scanning electron microscopy analysis revealed smooth structures of the SSPI with molecular weights ranging from 12 kDa to 65 kDa. The increase of albumins content in the SSPI by ultrasound was highly correlated (r = 0.962; p < 0.01) with the protein solubility. Improving the physicochemical, functional, biochemical and structural properties of SSPI by ultrasound could contribute to its utilization as ingredient in food industry.
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Affiliation(s)
- Kevin Ulises López-Mártir
- Maestría en Ciencias Biológico Agropecuarias en el Área de Ciencias Agrícolas, Universidad Autónoma de Nayarit, Carretera Tepic-Compostela, Xalisco 63780, Nayarit, Mexico
| | - José Armando Ulloa
- Maestría en Ciencias Biológico Agropecuarias en el Área de Ciencias Agrícolas, Universidad Autónoma de Nayarit, Carretera Tepic-Compostela, Xalisco 63780, Nayarit, Mexico; Centro de Tecnología de Alimentos, Universidad Autónoma de Nayarit, Ciudad de la Cultura Amado Nervo, Tepic 63155, Nayarit, Mexico.
| | - Judith Esmeralda Urías-Silvas
- Tecnología Alimentaria, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A. C., Avenida Normalistas 800, Colinas de la Normal, Guadalajara 44270, Jalisco, Mexico
| | - Petra Rosas-Ulloa
- Centro de Tecnología de Alimentos, Universidad Autónoma de Nayarit, Ciudad de la Cultura Amado Nervo, Tepic 63155, Nayarit, Mexico
| | - José Carmen Ramírez-Ramírez
- Unidad Académica de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nayarit, Carretera Compostela-Chapalilla Km 3.5, Compostela 63700, Nayarit, Mexico
| | - Juan Alberto Resendiz-Vazquez
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Epigmenio González 500, San Pablo 76130, Querétaro, Mexico
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Protein Isolate from Orange (Citrus sinensis L.) Seeds: Effect of High-Intensity Ultrasound on Its Physicochemical and Functional Properties. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-022-02956-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Thalía Flores-Jiménez N, Armando Ulloa J, Esmeralda Urías-Silvas J, Carmen Ramírez-Ramírez J, Ulises Bautista-Rosales P, Gutiérrez-Leyva R. Influence of high-intensity ultrasound on physicochemical and functional properties of a guamuchil Pithecellobium dulce (Roxb.) seed protein isolate. ULTRASONICS SONOCHEMISTRY 2022; 84:105976. [PMID: 35272239 PMCID: PMC8913353 DOI: 10.1016/j.ultsonch.2022.105976] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/14/2022] [Accepted: 03/03/2022] [Indexed: 06/02/2023]
Abstract
In this study, the influence of ultrasound on the physicochemical and functional properties of guamuchil seed protein isolate (GSPI) was investigated. The GSPI was prepared by alkaline extraction and isoelectric precipitation method followed by treating with ethanol (95%), from defatted guamuchil seed flour. GSPI suspensions (10%) were sonicated with a probe (20 kHz) at 3 power levels (200 W, 400 W, 600 W) for 15 and 30 min, in addition, to control treatment without ultrasound. Moisture content, water activity, bulk and compact densities and the L*, a* and b* color parameters of the GSPI decreased due to the ultrasound. Glutelin (61.1%) was the main protein fraction in GSPI. Results through Fourier transform infrared and fluorescence spectroscopy showed that ultrasound modified the secondary and tertiary protein structures of GSPI, which increased the surface hydrophobicity, molecular flexibility and in vitro digestibility of GSPI proteins by up to 114.8%, 57.3% and 12.5%, respectively. In addition, maximum reductions of 11.9% in particle size and 55.2% in turbidity of GSPI suspensions, as well as larger and more porous aggregates in GSPI lyophilized powders were observed by ultrasound impact. These structural and physicochemical changes had an improvement of up to 115.5% in solubility, 39.8% in oil absorption capacity, while the increases for emulsifying, foaming, gelling, flow and cohesion properties of GSPI were 87.4%, 74.2%, 40.0%, 44.4%, and 8.9%, respectively. The amelioration of the functional properties of GSPI by ultrasound could represent an alternative for its possible use as a food ingredient in industry.
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Affiliation(s)
- Nitzia Thalía Flores-Jiménez
- Posgrado en Ciencias Biológico Agropecuarias, Universidad Autónoma de Nayarit, Carretera Tepic-Compostela Km 9, Xalisco 63780, Nayarit, México
| | - José Armando Ulloa
- Posgrado en Ciencias Biológico Agropecuarias, Universidad Autónoma de Nayarit, Carretera Tepic-Compostela Km 9, Xalisco 63780, Nayarit, México; Centro de Tecnología de Alimentos, Universidad Autónoma de Nayarit, Ciudad de la Cultura Amado Nervo, Tepic 63155, Nayarit, México.
| | - Judith Esmeralda Urías-Silvas
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A. C., Av. Normalistas 800, Colinas de la Normal, Guadalajara 44270, Jalisco, México
| | - José Carmen Ramírez-Ramírez
- Unidad Académica de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nayarit, Carretera Compostela-Chapalilla Km 3.5, Compostela 63700, Nayarit, México
| | - Pedro Ulises Bautista-Rosales
- Posgrado en Ciencias Biológico Agropecuarias, Universidad Autónoma de Nayarit, Carretera Tepic-Compostela Km 9, Xalisco 63780, Nayarit, México; Centro de Tecnología de Alimentos, Universidad Autónoma de Nayarit, Ciudad de la Cultura Amado Nervo, Tepic 63155, Nayarit, México
| | - Ranferi Gutiérrez-Leyva
- Unidad Académica de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nayarit, Carretera Compostela-Chapalilla Km 3.5, Compostela 63700, Nayarit, México
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