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Trigueros E, Oliveira AP, Andrade PB, Videira RA, de Pinho PG, Sanz MT, Beltrán S. Exploring the bioactive potential of algae residue extract via subcritical water extraction: Insights into chemical composition and biological activity. Food Chem 2024; 458:140310. [PMID: 38970960 DOI: 10.1016/j.foodchem.2024.140310] [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: 04/24/2024] [Revised: 06/18/2024] [Accepted: 07/01/2024] [Indexed: 07/08/2024]
Abstract
Gelidium sesquipedale is valued in the Spanish agar industry, but its production generates substantial waste, often discarded despite its nutritional and bioactive content. Subcritical water extraction (SWE) at 175 °C and 50 bar for 130 min was performed on this waste after agar extraction, comparing it to conventional ethanol extraction. The SWE extract exhibited superior nutritional profile, including proteins (170.6 ± 1.0 mg/gfreeze-dried-extract), essential amino acids (18.1%), carbohydrates (148.1 ± 0.3 mg/gfreeze-dried-extract), total phenolic content (57 ± 7 mg-EqGA/gfreeze-dried-extract), and also containing Maillard reaction compounds, such as 5-hydroxymethylfurfural, furfural, 2-furanmethanol, 1-(2-furanyl)-ethanone, and 5-methyl-2-furfural, influencing color, aroma and flavor. This extract showed better antioxidant and anti-inflammatory properties than the conventional extract, and higher xanthine oxidase, tyrosinase, and acetylcholinesterase inhibition activities. Toxicological assessment on human cells indicated the safety of the SWE extract. Therefore, SWE technology offers a promising method to valorize G. sesquipedale residue, yielding a bioactive and nutrient-rich extract suitable for food and nutraceutical applications.
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Affiliation(s)
- Esther Trigueros
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal; Department of Biotechnology and Food Science, Chemical Engineering Division, University of Burgos, Plza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Andreia P Oliveira
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal.
| | - Paula B Andrade
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal.
| | - Romeu A Videira
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal.
| | - Paula Guedes de Pinho
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal.
| | - M Teresa Sanz
- Department of Biotechnology and Food Science, Chemical Engineering Division, University of Burgos, Plza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Sagrario Beltrán
- Department of Biotechnology and Food Science, Chemical Engineering Division, University of Burgos, Plza. Misael Bañuelos s/n, 09001 Burgos, Spain.
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2
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Istianah N, Kang HJ, Lee YJ, Choe D, Jung SK, Hong SC, Jung YH. Enhancing the dispersibility of Gelidium amansii-derived microfibrillated cellulose through centrifugal fractionation. Int J Biol Macromol 2024; 262:129909. [PMID: 38368676 DOI: 10.1016/j.ijbiomac.2024.129909] [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: 10/06/2023] [Revised: 12/01/2023] [Accepted: 01/31/2024] [Indexed: 02/20/2024]
Abstract
Hydrothermal pretreatment is useful for microfibrillated cellulose (MFC) preparation due to its safety, but the remaining hemicellulose might affect MFC properties. This study aimed to investigate the effect of centrifugation time on hemicellulose removal and the physicochemical properties of MFC obtained after hydrothermal pretreatment and micro-fibrillation. In this study, centrifugation was applied to the MFC suspension at varying duration times. Composition analysis and Fourier transform infrared spectra indicated that fractionated MFC has no hemicellulose content after 10, 20, and 30 min centrifugation. It also showed an approximately 5 times higher than 0.5 % g/g of initial solid concentration, indicated by a lower gel concentration point, than unfractionated MFC. Scanning electron microscope images of the fractionated MFC for 30 min (MFC2C) presented thin, long cellulose fibrils of 517 nm in average diameter and 635-10,000 nm in length that induced a slower sedimentation rate. MFC2C dispersion was also improved by autoclave sterilization by regulating cellulose structure, rheology, and crystallinity. As a result, MFC dispersibility can be enhanced by removing hemicellulose through simple centrifugation.
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Affiliation(s)
- Nur Istianah
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea; Department of Food Science and Biotechnology, Universitas Brawijaya, Malang 65145, Indonesia
| | - Hye Jee Kang
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yeon Ju Lee
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Deokyeong Choe
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sung Keun Jung
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sung-Chul Hong
- Department of Food Science and Biotechnology, Kunsan National University, Gunsan 54150, Republic of Korea
| | - Young Hoon Jung
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea.
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3
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Gomes-Dias JS, Teixeira-Guedes CI, Teixeira JA, Rocha CMR. Red seaweed biorefinery: The influence of sequential extractions on the functional properties of extracted agars and porphyrans. Int J Biol Macromol 2024; 257:128479. [PMID: 38040161 DOI: 10.1016/j.ijbiomac.2023.128479] [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: 02/14/2023] [Revised: 11/13/2023] [Accepted: 11/26/2023] [Indexed: 12/03/2023]
Abstract
Red seaweeds are exploited for their hydrocolloids, but other fractions are usually overlooked. In a novel approach, this study aimed to evaluate cold-water (CWE), ethanolic (EE), and alkaline (SE) extractions, alone and in sequence, to simultaneously: i) decrease the hydrocolloid extraction waste (valorizing bioactive side-streams and/or increasing extraction yield); and ii) increase the hydrocolloids' texturizing properties. It is the first time these extractions' synergetic and/or antagonistic effects will be accessed. For Porphyra dioica, a combination of CWE and EE was optimal: a positive influence on the melting temperature (increasing 5 °C to 74 °C) and sulphate content (a 3-fold reduction to 5 %) was observed, compared to a direct porphyran extraction. The same was observed for Gracilaria vermiculophyla, recovering two additional bioactive fractions without impacting the hydrocolloid's extraction (agar with 220 g/cm2 gelling strength and 14 % yield was obtained). The sequential use of CWE, EE, and SE was the most beneficial in Gelidium corneum processing: it enhanced agar's texturizing capacity (reaching 1150 g/cm2, a 1.5-fold increase when compared to a direct extraction), without affecting its 22 % yield or over 88 % purity. Ultimately, these findings clarified the effects of cascading biorefinery approaches from red seaweeds and their pertinence.
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Affiliation(s)
- Joana S Gomes-Dias
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | | | - José A Teixeira
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; LABBELS - Associate Laboratory, Braga, Portugal
| | - Cristina M R Rocha
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; LABBELS - Associate Laboratory, Braga, Portugal.
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Vilas-Franquesa A, Casertano M, Tresserra-Rimbau A, Vallverdú-Queralt A, Torres-León C. Recent advances in bio-based extraction processes for the recovery of bound phenolics from agro-industrial by-products and their biological activity. Crit Rev Food Sci Nutr 2023:1-25. [PMID: 37366277 DOI: 10.1080/10408398.2023.2227261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Usually found bound to other complex molecules (e.g., lignin, hemicellulose), phenolic compounds (PC) are widely present in agro-industrial by-products, and their extraction is challenging. In recent times, research is starting to highlight the bioactive roles played by bound phenolics (BPC) in human health. This review aims at providing a critical update on recent advances in green techniques for the recovery of BPC, focusing on enzymatic-assisted (EAE) and fermentation-assisted extraction (FAE) as well as in the combination of technologies, showing variable yield and features. The present review also summarizes the most recent biological activities attributed to BPC extracts until now. The higher antioxidant activity of BPC-compared to FPC-coupled with their affordable by-product source make them medicinally potent and economically viable, promoting their integral upcycling and generating new revenue streams, business, and employment opportunities. In addition, EAE and FAE can have a biotransformative effect on the PC itself or its moiety, leading to improved extraction outcomes. Moreover, recent research on BPC extracts has reported promising anti-cancer and anti-diabetic activity. Yet further research is needed to elucidate their biological mechanisms and exploit the true potential of their applications in terms of new food products or ingredient development for human consumption.
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Affiliation(s)
- Arnau Vilas-Franquesa
- Food Quality and Design Group, Department of Agrotechnology and Food Sciences, Wageningen University and Research Centre, Wageningen, The Netherlands
- Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain, Bellaterra, Spain
| | - Melania Casertano
- Food Quality and Design Group, Department of Agrotechnology and Food Sciences, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Anna Tresserra-Rimbau
- Nutrition, Food Science and Gastronomy Department, XIA, Institute of Nutrition and Food Safety (INSA-UB), School of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
| | - Anna Vallverdú-Queralt
- Nutrition, Food Science and Gastronomy Department, XIA, Institute of Nutrition and Food Safety (INSA-UB), School of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
| | - Cristian Torres-León
- Reaserch Center and Ethnobiological Garden (CIJE), Universidad Autonoma de Coahuila, Unidad Torreón, Viesca, Coahuila, Mexico
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Fischer B, Gevinski EV, da Silva DM, Júnior PAL, Bandiera VJ, Lohmann AM, Rigo D, Duarte PF, Franceschi E, Zandoná GP, Rombaldi CV, Cansian RL, Paroul N, Junges A. Extraction of hops pelletized (Humulus lupulus) with subcritical CO2 and hydrodistillation: Chemical composition identification, kinetic model, and evaluation of antioxidant and antimicrobial activity. Food Res Int 2023; 167:112712. [PMID: 37087215 DOI: 10.1016/j.foodres.2023.112712] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 03/09/2023] [Accepted: 03/14/2023] [Indexed: 03/22/2023]
Abstract
Hop essential oil and hop extract using carbon dioxide (CO2) are products with high added value because they have bioactive and sensory properties. In this context, the objective of this study was to obtain and characterize essential oil and extracts from pelleted hops of El Dorado, Polaris, Hallertau Blanc and Callista varieties using hydrodistillation and subcritical CO2 extraction methods. Extraction yield ranged from 0.38 % to 1.97 % (m/m) for essential oils and from 8.76 % to 15.35 % (m/m) for extracts using subcritical CO2. The chemical compositions of the essential oils were mainly monoterpene (18.14 % to 29.91 %) and sesquiterpene (46.01 % to 59.03 %) hydrocarbons and for the extracts were sesquiterpene hydrocarbons (33.05 % to 71.90 %) and oxygenated sesquiterpenes (14.80 % to 34.89 %). The extracts showed better antioxidant activity than essential oils due to the presence of phenolic compounds and flavonoids. Hop extracts showed some antimicrobial activity, but essential oils did not demonstrate antimicrobial potential. Hop extracts obtained with subCO2 have the potential to be used in the brewing industry as a flavoring and as natural antioxidants.
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Affiliation(s)
- Bruno Fischer
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil
| | - Eduardo Vinicios Gevinski
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil
| | - Diego Maroso da Silva
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil
| | - Paulo Amaurí Lando Júnior
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil
| | - Valmor José Bandiera
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil
| | - Andreia Menin Lohmann
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil
| | - Diane Rigo
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil
| | - Patrícia Fonseca Duarte
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil
| | - Elton Franceschi
- Center for Research on Colloidal Systems (NUESC), Institute of Research and Technology (ITP), Tiradentes University (UNIT), Aracaju, SE 49032-490, Brazil
| | - Giovana Paula Zandoná
- Agroindustrial Science and Technology Department, Federal University of Pelotas, Capão do Leão Campus, s/n, RS 96010-900, Pelotas, RS, Brazil
| | - Cesar Valmor Rombaldi
- Agroindustrial Science and Technology Department, Federal University of Pelotas, Capão do Leão Campus, s/n, RS 96010-900, Pelotas, RS, Brazil
| | - Rogério Luis Cansian
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil
| | - Natalia Paroul
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil
| | - Alexander Junges
- Department of Food and Chemical Engineering, URI Erechim, Av. Sete de Setembro 1621, Erechim, RS 99709-910, Brazil.
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Trigueros E, Ramos C, Alonso-Riaño P, Beltrán S, Sanz MT. Subcritical Water Treatment for Valorization of the Red Algae Residue after Agar Extraction: Scale-Up from Laboratory to Pilot Plant. Ind Eng Chem Res 2023; 62:3503-3514. [PMID: 36880853 PMCID: PMC9983305 DOI: 10.1021/acs.iecr.2c04132] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/20/2023] [Accepted: 02/08/2023] [Indexed: 02/18/2023]
Abstract
The feasibility of industrial subcritical water treatment on Gelidium sesquipedale residue through scaling up from the lab to pilot system in discontinuous mode (geometric scale-up factor = 50), at 130 and 175 °C (5% biomass), was investigated. The maximum volumes of the reactors were 500 mL at the lab-scale and 5 L at the pilot-scale system. At 175 °C, faster extraction/hydrolysis was observed for the pilot plant, but maximum yields were similar: 71.4 and 78.6% for galactans, 9.8 and 10.4% for glucans, and 92.7 and 86.1% for arabinans in pilot scale and lab scale, respectively, while the yields for proteins accounted nearly 40%. The highest yields for amino acids were observed for the smallest ones, while lower yields were determined for polar amino acids. The total phenolic content and color intensity progressively increased along time at lab scale, while a plateau was reached at the pilot level. Lower extraction yields but reproducible results were obtained at 130 °C. Finally, the pilot scale was essayed at a higher biomass loading (15%), and successful results were obtained, supporting the feasibility of the scaling-up process.
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Affiliation(s)
- Esther Trigueros
- Department of Biotechnology and Food Science, Chemical Engineering Division, University of Burgos, Plza. Misael Bañuelos s/n, Burgos 09001, Spain
| | - Cipriano Ramos
- Department of Biotechnology and Food Science, Chemical Engineering Division, University of Burgos, Plza. Misael Bañuelos s/n, Burgos 09001, Spain
| | - Patricia Alonso-Riaño
- Department of Biotechnology and Food Science, Chemical Engineering Division, University of Burgos, Plza. Misael Bañuelos s/n, Burgos 09001, Spain
| | - Sagrario Beltrán
- Department of Biotechnology and Food Science, Chemical Engineering Division, University of Burgos, Plza. Misael Bañuelos s/n, Burgos 09001, Spain
| | - María Teresa Sanz
- Department of Biotechnology and Food Science, Chemical Engineering Division, University of Burgos, Plza. Misael Bañuelos s/n, Burgos 09001, Spain
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Agabo-García C, Romero-García LI, Álvarez-Gallego CJ, Blandino A. Valorisation of the invasive alga Rugulopteryx okamurae through the production of monomeric sugars. Appl Microbiol Biotechnol 2023; 107:1971-1982. [PMID: 36735067 PMCID: PMC10006063 DOI: 10.1007/s00253-023-12402-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/17/2023] [Accepted: 01/19/2023] [Indexed: 02/04/2023]
Abstract
Rugulopteryx okamurae is an invasive brown alga causing severe environmental and economic problems on the western Mediterranean coasts. Thus, in addition to the difficulties caused to the fishing and tourism sectors, there is a need to manage its accumulation on the beaches. This work aims to valorise this waste by using it as raw material for producing monosaccharides through a two-stage sequential process. These sugars could be used for different fermentative processes to obtain high-value-added bioproducts. In this work, biological pretreatment of the previously conditioned seaweed with the fungus Aspergillus awamori in solid-state fermentation (SSF), followed by enzymatic hydrolysis with a commercial enzyme cocktail, was performed. The effect of the extension of the biological pretreatment (2, 5, 8 and 12 days) on the subsequent release of total reducing sugars (TRS) in the enzymatic hydrolysis stage was studied. To analyse this effect, experimental data of TRS produced along the hydrolysis were fitted to simple first-order kinetics. Also, the secretion of cellulase and alginate lyase by the fungus, along with the biological pretreatment, was determined. The results suggest that 5 days of biological pretreatment of the macroalgae with A. awamori followed by enzymatic saccharification for 24 h with Cellic CTec2® (112 FP units/g of dry biomass) are the best conditions tested, allowing the production of around 240 g of TRS per kg of dried biomass. The main sugars obtained were glucose (95.8 %) and mannitol (1.5 %), followed by galactose (1 %), arabinose (0.9 %) and fucose (0.5 %). KEY POINTS: • Five-day SSF by A. awamori was the best condition to pretreat R. okamurae. • Five-day SSF was optimal for alginate lyase production (1.63 ±0.011 IU/g biomass). • A maximum yield of 239 mg TRS/g biomass was obtained (with 95.8 % glucose).
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Affiliation(s)
- Cristina Agabo-García
- Faculty of Science, Department of Chemical Engineering and Food Technology, Wine and Agri-Food Research Institute (IVAGRO) and International Campus of Excellence (ceiA3), University of Cadiz, Campus de Puerto Real, s/n. 11510, Puerto Real, Cádiz, Spain
| | - Luis I. Romero-García
- Faculty of Science, Department of Chemical Engineering and Food Technology, Wine and Agri-Food Research Institute (IVAGRO) and International Campus of Excellence (ceiA3), University of Cadiz, Campus de Puerto Real, s/n. 11510, Puerto Real, Cádiz, Spain
| | - Carlos J. Álvarez-Gallego
- Faculty of Science, Department of Chemical Engineering and Food Technology, Wine and Agri-Food Research Institute (IVAGRO) and International Campus of Excellence (ceiA3), University of Cadiz, Campus de Puerto Real, s/n. 11510, Puerto Real, Cádiz, Spain
| | - Ana Blandino
- Faculty of Science, Department of Chemical Engineering and Food Technology, Wine and Agri-Food Research Institute (IVAGRO) and International Campus of Excellence (ceiA3), University of Cadiz, Campus de Puerto Real, s/n. 11510, Puerto Real, Cádiz, Spain
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8
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Egbune EO, Aganbi E, Anigboro AA, Ezedom T, Onojakpor O, Amata AI, Tonukari NJ. Biochemical characterization of solid-state fermented cassava roots (Manihot esculenta Crantz) and its application in broiler feed formulation. World J Microbiol Biotechnol 2022; 39:62. [PMID: 36577912 DOI: 10.1007/s11274-022-03496-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/13/2022] [Indexed: 12/30/2022]
Abstract
The biochemical parameters of solid-state fermented peeled and unpeeled cassava roots (Manihot esculenta Crantz) and their application in broiler feed formulations were investigated. Fermentation occurred at room temperature for 72 h (pH 3-9). The samples utilized for five (5) broiler starter feeds were labeled: control, unfermented unpeeled cassava (UUC), unfermented peeled cassava (UPC), fermented unpeeled cassava (FUC), and fermented peeled cassava (FPC). Formulations were made by substituting fermented/non-fermented cassava roots at pH 7 for maize (w/w%). Fermentation-induced changes included increased soluble and total protein concentrations (69.3 and 334.5 mg/g) and (9.6 and 10.8%), respectively, in cultures prepared with peeled and unpeeled cassava at pH 7 compared to the control (p < 0.05), and a reduction (p < 0.01) in cyanide concentration from 44.4 to 78.7 mg/kg in the control to 8.5 and 13.7 mg/kg in fermented cassava at pH 7. Birds fed FUC and FPC meal (0.6 and 0.5 kg) gained significantly more weight (p < 0.05) than those fed the control (0.3 kg). The biochemical parameters aspartate aminotransferase (AST), alanine aminotransferase (ALT), creatinine, and urea levels in broiler serum did not differ significantly (p > 0.05) for birds fed with fermented peeled and unpeeled cassava. Conversely, serum albumin and calcium levels were significantly lower (p < 0.05) for birds fed with the control feed compared to birds fed with fermented feeds. The results imply that fermented peeled and unpeeled cassava roots could be a safe and nutritionally beneficial replacement for maize in broiler diet.
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Affiliation(s)
- Egoamaka O Egbune
- Department of Biochemistry, Faculty of Science, Delta State University, Abraka, Nigeria. .,Tonukari Biotechnology Laboratory, Sapele, Delta State, Nigeria.
| | - Eferhire Aganbi
- Department of Biochemistry, Faculty of Science, Delta State University, Abraka, Nigeria.,Georgia State University, J. Mack Robinson College of Business, 3348 Peachtree Rd NE, Atlanta, GA, 30326, USA
| | | | - Theresa Ezedom
- Department of Medical Biochemistry, Faculty of Basic Medical Sciences, Delta State University, P.M.B. 1, Abraka, Nigeria
| | - Ogheneyoma Onojakpor
- Department of Consumer and Food Sciences, University of Pretoria, Private Bag X20, Hatfield, 0028, South Africa
| | - Alex-Ifo Amata
- Department of Animal Science and Fisheries, Faculty of Agricultural Science, Delta State University, Abraka, Nigeria
| | - Nyerhovwo J Tonukari
- Department of Biochemistry, Faculty of Science, Delta State University, Abraka, Nigeria.,Tonukari Biotechnology Laboratory, Sapele, Delta State, Nigeria
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Subcritical Water as Pretreatment Technique for Bioethanol Production from Brewer's Spent Grain within a Biorefinery Concept. Polymers (Basel) 2022; 14:polym14235218. [PMID: 36501611 PMCID: PMC9738787 DOI: 10.3390/polym14235218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/25/2022] [Accepted: 11/27/2022] [Indexed: 12/02/2022] Open
Abstract
Bioeconomy and environmental issues envisage industrial by-products such as Brewer's spent grain (BSG) as renewable resources for their recycling and reuse within a biorefinery concept. This study aimed to investigate the production of bioethanol from subcritical water (subW) pretreated BSG, following the conversion of the BSG biopolymers cellulose and hemicelluloses. The subW pretreatment was performed in a batch reactor at 174 °C, during 60 min and 5% (w/v) of dry BSG charge. The behavior of BSG biopolymers under subW pretreatment was monitored by evaluating the chemical composition of the liquid and solid streams and the chemical and structural changes caused in the solid residues by scanning electron microscope (SEM), CHNS elemental analysis and water retention value (WRV). The production of bioethanol from subW-pretreated BSG was assessed by separate hydrolysis and fermentation (SHF) and also by simultaneous saccharification and fermentation (SSF) by using the enzymatic cocktail Celluclast 1.5 L (40 FPU/gsolids) and the yeast Ethanol Red®. The higher bioethanol productivity (1.073 g∙L-1∙h-1) and concentration (32.18 g/L) were achieved by SSF with higher solids' loading (25%) and following a fed-batch strategy. These results suggest that subcritical water pretreatment is a promising technology for the valorization of BSG as a feedstock for second-generation bioethanol production.
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Alexandri M, Kachrimanidou V, Papapostolou H, Papadaki A, Kopsahelis N. Sustainable Food Systems: The Case of Functional Compounds towards the Development of Clean Label Food Products. Foods 2022; 11:foods11182796. [PMID: 36140924 PMCID: PMC9498094 DOI: 10.3390/foods11182796] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 08/25/2022] [Accepted: 09/05/2022] [Indexed: 11/29/2022] Open
Abstract
The addition of natural components with functional properties in novel food formulations confers one of the main challenges that the modern food industry is called to face. New EU directives and the global turn to circular economy models are also pressing the agro-industrial sector to adopt cradle-to-cradle approaches for their by-products and waste streams. This review aims to present the concept of “sustainable functional compounds”, emphasizing on some main bioactive compounds that could be recovered or biotechnologically produced from renewable resources. Herein, and in view of their efficient and “greener” production and extraction, emerging technologies, together with their possible advantages or drawbacks, are presented and discussed. Μodern examples of novel, clean label food products that are composed of sustainable functional compounds are summarized. Finally, some action plans towards the establishment of sustainable food systems are suggested.
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Affiliation(s)
- Maria Alexandri
- Correspondence: (M.A.); or (N.K.); Tel.: +30-26710-26505 (N.K.)
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11
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Filtration of subcritical water hydrolysates from red macroalgae byproducts with ultraporous ceramic membranes for oligosaccharide and peptide fractionation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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