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Longo A, Fanelli F, Villano M, Montemurro M, Rizzello CG. Bioplastic Production from Agri-Food Waste through the Use of Haloferax mediterranei: A Comprehensive Initial Overview. Microorganisms 2024; 12:1038. [PMID: 38930420 PMCID: PMC11205408 DOI: 10.3390/microorganisms12061038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/06/2024] [Accepted: 05/16/2024] [Indexed: 06/28/2024] Open
Abstract
The research on bioplastics (both biobased and biodegradable) is steadily growing and discovering environmentally friendly substitutes for conventional plastic. This review highlights the significance of bioplastics, analyzing, for the first time, the state of the art concerning the use of agri-food waste as an alternative substrate for biopolymer generation using Haloferax mediterranei. H. mediterranei is a highly researched strain able to produce polyhydroxybutyrate (PHB) since it can grow and produce bioplastic in high-salinity environments without requiring sterilization. Extensive research has been conducted on the genes and pathways responsible for PHB production using H. mediterranei to find out how fermentation parameters can be regulated to enhance cell growth and increase PHB accumulation. This review focuses on the current advancements in utilizing food waste as a substitute for costly substrates to reduce feedstock expenses. Specifically, it examines the production of biomass and the recovery of PHB from agri-food waste. Furthermore, it emphasizes the characterization of PHB and the significance of hydroxyvalerate (HV) abundance in the formation of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) copolymer. The downstream processing options are described, and the crucial factors associated with industrial scale-up are assessed, including substrates, bioreactors, process parameters, and bioplastic extraction and purification. Additionally, the economic implications of various options are discussed.
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Affiliation(s)
- Angela Longo
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy; (A.L.); (C.G.R.)
| | - Francesca Fanelli
- Institute of Sciences of Food Production (CNR-ISPA), National Research Council of Italy, 70126 Bari, Italy;
| | - Marianna Villano
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy;
- Research Center for Applied Sciences to the Safeguard of Environment and Cultural Heritage (CIABC), Sapienza University of Rome, 00185 Rome, Italy
| | - Marco Montemurro
- Institute of Sciences of Food Production (CNR-ISPA), National Research Council of Italy, 70126 Bari, Italy;
| | - Carlo Giuseppe Rizzello
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy; (A.L.); (C.G.R.)
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Jin A, del Valle LJ, Puiggalí J. Copolymers and Blends Based on 3-Hydroxybutyrate and 3-Hydroxyvalerate Units. Int J Mol Sci 2023; 24:17250. [PMID: 38139077 PMCID: PMC10743438 DOI: 10.3390/ijms242417250] [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: 11/04/2023] [Revised: 11/29/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
This review presents a comprehensive update of the biopolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), emphasizing its production, properties, and applications. The overall biosynthesis pathway of PHBV is explored in detail, highlighting recent advances in production techniques. The inherent physicochemical properties of PHBV, along with its degradation behavior, are discussed in detail. This review also explores various blends and composites of PHBV, demonstrating their potential for a range of applications. Finally, the versatility of PHBV-based materials in multiple sectors is examined, emphasizing their increasing importance in the field of biodegradable polymers.
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Affiliation(s)
- Anyi Jin
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain; (A.J.); (L.J.d.V.)
- Venvirotech Biotechnology S.L., Santa Perpètua de Mogoda, 08130 Barcelona, Spain
| | - Luis J. del Valle
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain; (A.J.); (L.J.d.V.)
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain
| | - Jordi Puiggalí
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain; (A.J.); (L.J.d.V.)
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain
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Hameed A, Anwar MJ, Perveen S, Amir M, Naeem I, Imran M, Hussain M, Ahmad I, Afzal MI, Inayat S, Awuchi CG. Functional, industrial and therapeutic applications of dairy waste materials. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2023; 26:1470-1496. [DOI: 10.1080/10942912.2023.2213854] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 05/09/2023] [Indexed: 05/18/2024]
Affiliation(s)
- Aneela Hameed
- Faculty of Food Science and Nutrition, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Muhammad Junaid Anwar
- Faculty of Food Science and Nutrition, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Saima Perveen
- Faculty of Food Science and Nutrition, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Muhammad Amir
- Faculty of Food Science and Nutrition, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Iqra Naeem
- Faculty of Food Science and Nutrition, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Muhammad Imran
- Department of food science and technology, University of Narowal-Pakistan, Narowal, Pakistan
| | - Muzzamal Hussain
- Department of Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ishtiaque Ahmad
- Department of Dairy Technology, University of Veterinary & Animal Sciences, Lahore, Pakistan
| | - Muhamad Inam Afzal
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Saima Inayat
- Department of Dairy Technology, University of Veterinary & Animal Sciences, Lahore, Pakistan
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Augustyniak A, Gottardi D, Giordani B, Gaffey J, Mc Mahon H. Dairy bioactives and functional ingredients with skin health benefits. J Funct Foods 2023. [DOI: 10.1016/j.jff.2023.105528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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5
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Hathi ZJ, Haque MA, Priya A, Qin ZH, Huang S, Lam CH, Ladakis D, Pateraki C, Mettu S, Koutinas A, Du C, Lin CSK. Fermentative bioconversion of food waste into biopolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) using Cupriavidus necator. ENVIRONMENTAL RESEARCH 2022; 215:114323. [PMID: 36115419 DOI: 10.1016/j.envres.2022.114323] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 08/20/2022] [Accepted: 09/07/2022] [Indexed: 05/27/2023]
Abstract
Dependency on plastic commodities has led to a recurrent increase in their global production every year. Conventionally, plastic products are derived from fossil fuels, leading to severe environmental concerns. The recent coronavirus disease 2019 pandemic has triggered an increase in medical waste. Conversely, it has disrupted the supply chain of personal protective equipment (PPE). Valorisation of food waste was performed to cultivate C. necator for fermentative production of biopolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). The increase in biomass, PHBV yield and molar 3-hydroxy valerate (3HV) content was estimated after feeding volatile fatty acids. The fed-batch fermentation strategy reported in this study produced 15.65 ± 0.14 g/L of biomass with 5.32 g/L of PHBV with 50% molar 3HV content. This is a crucial finding, as molar concentration of 3HV can be modulated to suit the specification of biopolymer (film or fabric). The strategy applied in this study addresses the issue of global food waste burden and subsequently generates biopolymer PHBV, turning waste to wealth.
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Affiliation(s)
- Zubeen J Hathi
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Md Ariful Haque
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Anshu Priya
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Zi-Hao Qin
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Shuquan Huang
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Chun Ho Lam
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Dimitris Ladakis
- Department of Food Science and Human Nutrition, Agricultural University of Athens, Athens, Greece
| | - Chrysanthi Pateraki
- Department of Food Science and Human Nutrition, Agricultural University of Athens, Athens, Greece
| | - Srinivas Mettu
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Apostolis Koutinas
- Department of Food Science and Human Nutrition, Agricultural University of Athens, Athens, Greece
| | - Chenyu Du
- School of Applied Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom
| | - Carol Sze Ki Lin
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong.
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Biundo A, Stamm A, Gorgoglione R, Syrén PO, Curia S, Hauer B, Capriati V, Vitale P, Perna F, Agrimi G, Pisano I. REGIO- AND STEREOSELECTIVE BIOCATALYTIC HYDRATION OF FATTY ACIDS FROM WASTE COOKING OILS EN ROUTE TO HYDROXY FATTY ACIDS AND BIO-BASED POLYESTERS. Enzyme Microb Technol 2022; 163:110164. [DOI: 10.1016/j.enzmictec.2022.110164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/17/2022] [Accepted: 11/19/2022] [Indexed: 11/27/2022]
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Priya A, Hathi Z, Haque MA, Kumar S, Kumar A, Singh E, Lin CSK. Effect of levulinic acid on production of polyhydroxyalkanoates from food waste by Haloferax mediterranei. ENVIRONMENTAL RESEARCH 2022; 214:114001. [PMID: 35934144 DOI: 10.1016/j.envres.2022.114001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/15/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Polyhydroxyalkanoates (PHA), especially poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is considered as the most suitable candidate to replace petrochemical plastics. However, the high production cost and the composition of the monomers in the copolymer are the major constraints in production. The 3-hydroxyvalerate (3HV) rich copolymers are ideal for various applications due to their lower melting points, improved elasticity, and ductility. Haloferax mediterranei is a suitable microorganism for the production of biopolymer PHBV from biowaste. Nevertheless, the potential of H. mediterranei cultivated on food waste as sustainable substrate and levulinic acid as an inducer has not been explored for PHBV production. This study aims at the valorization of food waste as low-cost substrate and evaluation of effect of levulinic acid in the production and composition of PHBV using H. mediterranei. Shake-flask fermentations using different concentrations of salt, glucose and levulinic acid were first performed to optimize the cultivation conditions. The highest growth of the halophile was observed at salt concentration of 15% and glucose of concentration 10 g/L. Under optimized growth conditions, H. mediterranei was cultivated for PHBV production in fed-batch bioreactor with pulse fed levulinic acid. The maximum biomass of 3.19 ± 0.66 g/L was achieved after 140 h of cultivation with 3 g/L of levulinic acid. A decrease in H. mediterranei growth was noticed with the increase in levulinic acid concentration in the range of 3-10 g/L. The overall yield of PHBV at 3, 5, 7 and 10 g/L of levulinic acid were 18.23%, 56.70%, 31.54%, 21.29%, respectively. The optimum concentration of 5 g/L of levulinic acid was found to produce the maximum yield of 56.70% PHBV with 18.55 mol% 3HV content. A correlation between levulinic acid concentrations and PHBV production established in this study can serve as an important reference for future large-scale production.
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Affiliation(s)
- Anshu Priya
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Zubeen Hathi
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Md Ariful Haque
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Sunil Kumar
- Technology Development Centre, Council of Scientific and Industrial Research-National Environmental Engineering Research Institute (CSIR - NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India
| | - Aman Kumar
- Technology Development Centre, Council of Scientific and Industrial Research-National Environmental Engineering Research Institute (CSIR - NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India
| | - Ekta Singh
- Technology Development Centre, Council of Scientific and Industrial Research-National Environmental Engineering Research Institute (CSIR - NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India
| | - Carol S K Lin
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong.
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Montemurro M, Salvatori G, Alfano S, Martinelli A, Verni M, Pontonio E, Villano M, Rizzello CG. Exploitation of wasted bread as substrate for polyhydroxyalkanoates production through the use of Haloferax mediterranei and seawater. Front Microbiol 2022; 13:1000962. [PMID: 36212839 PMCID: PMC9534330 DOI: 10.3389/fmicb.2022.1000962] [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: 07/22/2022] [Accepted: 08/31/2022] [Indexed: 11/13/2022] Open
Abstract
The use of the halophile microorganism Haloferax mediterranei, able to synthesize poly(hydroxybutyrate-hydroxyvalerate) (PHBV), is considered as a promising tool for the industrial production of bioplastic through bioprocessing. A consistent supplementation of the growth substrate in carbohydrates and minerals is overall necessary to allow its PHBV production. In this work, wasted bread was used as substrate for bioplastic production by microbial fermentation. Instead of the consistent and expensive minerals supplement required for Hfx. mediterranei DSM1411 growth, microfiltered seawater was added to the wasted bread-derived substrate. The suitable ratio of wasted bread homogenate and seawater, corresponding to 40:60, was selected. The addition of proteases and amylase to the bread homogenate promoted the microbial growth but it did not correspond to the increase of bioplastic production by the microorganism, that reach, under the experimental conditions, 1.53 g/L. An extraction procedure of the PHBV from cells, based on repeated washing with water, followed or not by a purification through ethanol precipitation, was applied instead of the conventional extraction with chloroform. Yield of PHBV obtained using the different extraction methods were 21.6 ± 3.6 (standard extraction/purification procedure with CHCl3:H2O mixture), 24.8 ± 3.0 (water-based extraction), and 19.8 ± 3.3 mg PHAs/g of wasted bread (water-based extraction followed by ethanol purification). Slightly higher hydroxyvalerate content (12.95 vs 10.78%, w/w) was found in PHBV obtained through the water-based extraction compared to the conventional one, moreover, the former was characterized by purity of 100% (w/w). Results demonstrated the suitability of wasted bread, supplemented with seawater, to be used as substrate for bioplastic production through fermentation. Results moreover demonstrated that a solvent-free extraction, exclusively based on osmotic shock, could be used to recover the bioplastic from cells.
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Affiliation(s)
- Marco Montemurro
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy
| | - Gaia Salvatori
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
| | - Sara Alfano
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
| | | | - Michela Verni
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy
| | - Erica Pontonio
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy
| | - Marianna Villano
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
- Research Center for Applied Sciences to the Safeguard of Environment and Cultural Heritage (CIABC), Sapienza University of Rome, Rome, Italy
| | - Carlo Giuseppe Rizzello
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- *Correspondence: Carlo Giuseppe Rizzello,
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Awasthi MK, Harirchi S, Sar T, Vs V, Rajendran K, Gómez-García R, Hellwig C, Binod P, Sindhu R, Madhavan A, Kumar ANA, Kumar V, Kumar D, Zhang Z, Taherzadeh MJ. Myco-biorefinery approaches for food waste valorization: Present status and future prospects. BIORESOURCE TECHNOLOGY 2022; 360:127592. [PMID: 35809874 DOI: 10.1016/j.biortech.2022.127592] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/30/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Increases in population and urbanization leads to generation of a large amount of food waste (FW) and its effective waste management is a major concern. But putrescible nature and high moisture content is a major limiting factor for cost effective FW valorization. Bioconversion of FW for the production of value added products is an eco-friendly and economically viable strategy for addressing these issues. Targeting on production of multiple products will solve these issues to greater extent. This article provides an overview of bioconversion of FW to different value added products.
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Affiliation(s)
- Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
| | - Sharareh Harirchi
- Swedish Centre for Resource Recovery, University of Borås, Borås 50190, Sweden
| | - Taner Sar
- Swedish Centre for Resource Recovery, University of Borås, Borås 50190, Sweden
| | - Vigneswaran Vs
- Department of Environmental Science and Engineering, School of Engineering and Sciences, SRM University-AP, Amaravati, Andhra Pradesh 522240, India
| | - Karthik Rajendran
- Department of Environmental Science and Engineering, School of Engineering and Sciences, SRM University-AP, Amaravati, Andhra Pradesh 522240, India
| | - Ricardo Gómez-García
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Porto, Portugal
| | - Coralie Hellwig
- Swedish Centre for Resource Recovery, University of Borås, Borås 50190, Sweden
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India
| | - Raveendran Sindhu
- Department of Food Technology, TKM Institute of Technology, Kollam 691 505, Kerala, India
| | - Aravind Madhavan
- Rajiv Gandhi Centre for Biotechnology, Jagathy, Thiruvananthapuram 695 014, Kerala, India
| | - A N Anoop Kumar
- Centre for Research in Emerging Tropical Diseases (CRET-D), Department of Zoology, University of Calicut, Malappuram 673635, Kerala, India
| | - Vinod Kumar
- School of Water, Energy and Environment, Cranfield University, Cranfield MK43 0AL, UK
| | - Deepak Kumar
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, 402 Walters Hall, 1 Forestry Drive, Syracuse, NY 13210, USA
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
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Liang SY, Wan SC, Ho YP, Horng YT, Soo PC, Peng WP. Rapid Quantification of Polyhydroxybutyrate Polymer from Single Bacterial Cells with Mass Spectrometry. Anal Chem 2022; 94:11734-11738. [PMID: 35977070 DOI: 10.1021/acs.analchem.2c02807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Polyhydroxyalkanoate (PHA) is one of the biocompatible and biodegradable plastics that can be produced and accumulated as granules inside microorganisms. In this study, a new approach to rapidly quantify a short-chain-length PHA, polyhydroxybutyrate (PHB), produced from genetically engineered Escherichia coli containing phaCAB is presented. The mass of each bacterial cell was measured using a laser-induced radio frequency (rf) plasma charge detection quadrupole ion trap mass spectrometer (LIRFP CD QIT-MS), and then, the PHB contents were determined by calculating the change in cellular mass. The quantitative results showed that the PHB contents measured by LIRFP CD QIT-MS were consistent with those by reference analysis, gas chromatography (GC). The PHB content of each bacterial sample can be obtained within 20 min from sampling using LIRFP CD QIT-MS while GC analysis takes 2 days. In addition, LIRFP CD QIT-MS does not use any hazardous chemicals in cellular mass quantification as compared to GC. This indicates that LIRFP CD QIT-MS has potential in routine monitoring of PHB production.
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Affiliation(s)
- Shao-Yu Liang
- Department of Physics, National Dong Hwa University, Shoufeng, Hualien, Taiwan 974
| | - Shih-Chih Wan
- Department of Physics, National Dong Hwa University, Shoufeng, Hualien, Taiwan 974
| | - Yen-Peng Ho
- Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien, Taiwan 974
| | - Yu-Tze Horng
- Department of Laboratory Medicine and Biotechnology, Tzu Chi University, Hualien, Hualien, Taiwan 970
| | - Po-Chi Soo
- Department of Laboratory Medicine and Biotechnology, Tzu Chi University, Hualien, Hualien, Taiwan 970
| | - Wen-Ping Peng
- Department of Physics, National Dong Hwa University, Shoufeng, Hualien, Taiwan 974
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Teodoro JA, Arend GD, Proner MC, Verruck S, Rezzadori K. A review on membrane separation processes focusing on food industry environment-friendly processes. Crit Rev Food Sci Nutr 2022; 63:11275-11289. [PMID: 35758250 DOI: 10.1080/10408398.2022.2092057] [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] [Indexed: 11/03/2022]
Abstract
Food processing industries have led to several environmental impacts due to their high water and energy consumption, as well as soil and water bodies' contamination through improper waste disposal. Membrane Separation Processes (MSP) emerge as an important alternative to enable the adoption of sustainable processes by food industries, since satisfying the requests of innovative processes and equipment design, such as smaller, cleaner, more energy-efficient processes (mild conditions) without the usage of chemical agents. Membrane-based processes fulfill these requirements, and their potential has been broadly recognized in the last few years. This review provides a comprehensive and up-to-date overview of the application of MSP in sustainable processes in the different segments of the food industry over the last 10 years. Waste and wastewater treatment, recovery of valuable compounds and water for reuse, and alternatives to high energy consumption processes were identified as sustainable processes in this context. One trend found is the potential for adding value to production chains by obtaining valuable compounds that have not been explored yet. As a perspective for future research, this review showed that it is advisable to implement MSP in different industrial environments in order to make current processes environmentally sustainable and less polluting.
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Affiliation(s)
- Jessica A Teodoro
- Department of Food Science and Technology, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Giordana D Arend
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Mariane C Proner
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Silvani Verruck
- Department of Food Science and Technology, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Katia Rezzadori
- Department of Food Science and Technology, Federal University of Santa Catarina, Florianópolis, SC, Brazil
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Behera S, Priyadarshanee M, Das S. Polyhydroxyalkanoates, the bioplastics of microbial origin: Properties, biochemical synthesis, and their applications. CHEMOSPHERE 2022; 294:133723. [PMID: 35085614 DOI: 10.1016/j.chemosphere.2022.133723] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 01/13/2022] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
The rising plastic pollution deteriorates the environment significantly as these petroleum-based plastics are not biodegradable, and their production requires natural fuels (energy source) and other resources. Polyhydroxyalkanoates (PHAs) are bioplastic and a sustainable and eco-friendly alternative to synthetic plastics. PHAs can be entirely synthesized using various microorganisms such as bacteria, algae, and fungi. These value-added biopolymers show promising properties such as enhanced biodegradability, biocompatibility, and other chemo-mechanical properties. Further, it has been established that the properties of PHA polymers depend on the substrates and chemical composition (monomer unit) of these polymers. PHAs hold great potential as an alternative to petroleum-based polymers, and further research for economic production and utilization of these biopolymers is required. The review describes the synthesis mechanism and different properties of microbially synthesized PHAs for various applications. The classification of PHAs and the multiple techniques necessary for their detection and evaluation have been discussed. In addition, the synthesis mechanism involving the genetic regulation of these biopolymers in various microbial groups has been described. This review provides information on various commercially available PHAs and their application in multiple sectors. The industrial production of these microbially synthesized polymers and the different extraction methods have been reviewed in detail. Furthermore, the review provides an insight into the potential applications of this biopolymer in environmental, industrial, and biomedical applications.
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Affiliation(s)
- Shivananda Behera
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela, 769 008, Odisha, India
| | - Monika Priyadarshanee
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela, 769 008, Odisha, India
| | - Surajit Das
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela, 769 008, Odisha, India.
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Abd El-Malek F, Rofeal M, Zabed HM, Nizami AS, Rehan M, Qi X. Microorganism-mediated algal biomass processing for clean products manufacturing: Current status, challenges and future outlook. FUEL 2022; 311:122612. [DOI: 10.1016/j.fuel.2021.122612] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Stasinakis AS, Charalambous P, Vyrides I. Dairy wastewater management in EU: Produced amounts, existing legislation, applied treatment processes and future challenges. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 303:114152. [PMID: 34861503 DOI: 10.1016/j.jenvman.2021.114152] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 11/13/2021] [Accepted: 11/22/2021] [Indexed: 05/27/2023]
Abstract
Dairy industry consumes high water amounts and generates highly contaminated wastewater. EU-27 is the second largest milk producer and the main cheese exporter in the world. The main objectives of the current study was to estimate the amounts of dairy wastewater (DWW) that are produced annually in different EU countries and to present the relevant existing EU legislation. The main treatment practices currently applied as well as the future opportunities for sustainable DWW management were also discussed. According to the results a total amount of 192.5 × 106 m3 of DWW are annually produced in EU-27 countries, 49% of them are due to the production of cheeses, while 19%, 18% and 13% are due to the production of drinking milk, acidified milk and butterfat products, respectively. Six countries (Germany, France, Italy, Poland, Spain and Netherlands) contribute to the generation of more than 73% of DWW, while the annual per capita DWW production ranges between 36 L (Luxembourg) and 1441 L (Ireland). Since 2019, EU has established best available techniques (BAT) for the dairy industry in order to achieve efficient monitoring of the produced wastewater, reduced water consumption and increased resource efficiency. The main on-site treatment processes that are currently applied include in series wastewater pretreatment for the removal of fat and pH adjustment, anaerobic or/and aerobic biological processes for the decrease of organic loading and nutrients and use of membranes for the cases that recovered water is going to be reused. Limited information is so far available for the operational treatment cost of the different processes. Data originated from a large dairy industry in Cyprus showed an operational cost equal to 1.21 €/m3 of treated wastewater. The main future challenge for the dairy industry and water treatment sector is the adoption of novel processes aiming to DWW valorization under the frame of circular economy.
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Affiliation(s)
- Athanasios S Stasinakis
- Water and Air Quality Laboratory, Department of Environment, University of the Aegean, University Hill, 81100, Mytilene, Greece; Department of Chemical Engineering, Cyprus University of Technology, 95 Eirinis Str., P.O. BOX 50329, 3603, Limassol, Cyprus.
| | - Panagiotis Charalambous
- Department of Chemical Engineering, Cyprus University of Technology, 95 Eirinis Str., P.O. BOX 50329, 3603, Limassol, Cyprus
| | - Ioannis Vyrides
- Department of Chemical Engineering, Cyprus University of Technology, 95 Eirinis Str., P.O. BOX 50329, 3603, Limassol, Cyprus
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15
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Haloarchaea as emerging big players in future polyhydroxyalkanoate bioproduction: Review of trends and perspectives. CURRENT RESEARCH IN BIOTECHNOLOGY 2022. [DOI: 10.1016/j.crbiot.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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16
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Exploring the DPP-IV Inhibitory, Antioxidant and Antibacterial Potential of Ovine "Scotta" Hydrolysates. Foods 2021; 10:foods10123137. [PMID: 34945689 PMCID: PMC8701287 DOI: 10.3390/foods10123137] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/10/2021] [Accepted: 12/14/2021] [Indexed: 01/04/2023] Open
Abstract
The aim of this work was to valorize the by-product derived from the ricotta cheese process (scotta). In this study, ovine scotta was concentrated by ultrafiltration and then subjected to enzymatic hydrolyses using proteases of both vegetable (4% E:S, 4 h, 50 °C) and animal origin (4% E:S, 4 h, 40 °C). The DPP-IV inhibitory, antioxidant, and antibacterial activities of hydrolysates from bromelain (BSPH) and pancreatin (PSPH) were measured in vitro. Both the obtained hydrolysates showed a significantly higher DPP-IV inhibitory activity compared to the control. In particular, BSPH proved to be more effective than PSPH (IC50 8.5 ± 0.2 vs. 13 ± 1 mg mL−1). Moreover, BSPH showed the best antioxidant power, while PSPH was more able to produce low-MW peptides. BSPH and PSPH hydrolysates showed a variable but slightly inhibitory effect depending on the species or strain of bacteria tested. BSPH and PSPH samples were separated by gel permeation chromatography (GPC). LC-MS/MS analysis of selected GPC fractions allowed identification of differential peptides. Among the peptides 388 were more abundant in BSPH than in the CTRL groups, 667 were more abundant in the PSPH group compared to CTRL, and 97 and 75 of them contained sequences with a reported biological activity, respectively.
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17
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Wang J, Liu S, Huang J, Qu Z. A review on polyhydroxyalkanoate production from agricultural waste Biomass: Development, Advances, circular Approach, and challenges. BIORESOURCE TECHNOLOGY 2021; 342:126008. [PMID: 34592618 DOI: 10.1016/j.biortech.2021.126008] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/15/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
Polyhydroxyalkanoates are biopolymers produced by microbial fermentation. They have excellent biodegradability and biocompatibility, which are regarded as promising substitutes for traditional plastics in various production and application fields. This review details the research progress in PHA production from lignocellulosic crop residues, lipid-type agricultural wastes, and other agro-industrial wastes such as molasses and whey. The effective use of agricultural waste can further reduce the cost of PHA production while avoiding competition between industrial production and food. The latest information on fermentation parameter optimization, fermentation strategies, kinetic studies, and circular approach has also been discussed. This review aims to analyze the crucial process of the PHA production from agricultural wastes to provide support and reference for further scale-up and industrial production.
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Affiliation(s)
- Jianfei Wang
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse NY13210, United States
| | - Shijie Liu
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse NY13210, United States.
| | - Jiaqi Huang
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse NY13210, United States; The Center for Biotechnology & Interdisciplinary Studies (CBIS) at Rensselaer Polytechnic Institute, Troy NY12180, United States
| | - Zixuan Qu
- School of Engineering, Tufts University, Medford, MA 02155, United States
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18
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Khomlaem C, Aloui H, Oh WG, Kim BS. High cell density culture of Paracoccus sp. LL1 in membrane bioreactor for enhanced co-production of polyhydroxyalkanoates and astaxanthin. Int J Biol Macromol 2021; 192:289-297. [PMID: 34619282 DOI: 10.1016/j.ijbiomac.2021.09.180] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/12/2021] [Accepted: 09/26/2021] [Indexed: 11/17/2022]
Abstract
A cell retention culture of Paracoccus sp. LL1 was performed in a membrane bioreactor equipped with an internal ceramic filter module to reach high cell density and thus enhance the co-production of polyhydroxyalkanoates (PHA) and astaxanthin as growth-associated products. Cell retention culture results showed that PHA accumulation increased with increasing dry cell weight (DCW), giving rise to a maximum of 113 ± 0.92 g/L of DCW with 43.9 ± 0.91 g/L of PHA (38.8% of DCW) at 48 h. A significant increase in both intracellular and extracellular astaxanthin concentrations was also recorded during fermentation process achieving a maximum of 8.51 ± 0.20 and 10.2 ± 0.24 mg/L, respectively. Amounts of PHA and total astaxanthin produced by cell retention culture were 6.29 and 19.7-folds higher, respectively, than those recorded under batch cultivation. PHA and total astaxanthin productivities by cell retention culture also increased up to 0.914 g/L/h and 0.781 mg/L/h, respectively, which were 3.54 and 11.1-folds higher than those of batch culture. Based on gas chromatography, Fourier transform infrared spectroscopy, and 1H nuclear magnetic resonance spectroscopy, the extracted PHA was identified as a copolymer of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with a 3-hydroxyvalerate content of 3.78 mol%.
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Affiliation(s)
- Chanin Khomlaem
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Hajer Aloui
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Won-Gyun Oh
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Beom Soo Kim
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
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19
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Bosco F, Cirrincione S, Carletto R, Marmo L, Chiesa F, Mazzoli R, Pessione E. PHA Production from Cheese Whey and "Scotta": Comparison between a Consortium and a Pure Culture of Leuconostoc mesenteroides. Microorganisms 2021; 9:2426. [PMID: 34946028 PMCID: PMC8704080 DOI: 10.3390/microorganisms9122426] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 11/17/2021] [Indexed: 11/19/2022] Open
Abstract
It is urgent to expand the market of biodegradable alternatives to oil-derived plastics owing to (i) increasingly limited oil availability/accessibility, and (ii) the dramatic impact of traditional plastics on aquatic life, the food chain, all Earth ecosystems, and ultimately, human health. Polyhydroxyalkanoates (PHAs) are promising biodegradable polymers that can be obtained through microbial fermentation of agro-industrial byproducts, e.g., milk and cheese whey. Here, the PHA-accumulating efficiency of a mixed microbial culture (MMC, derived from activated sludges) grown on dairy byproducts (cheese and scotta whey) was measured. Bioreactor tests featuring temperature and pH control showed that both scotta and pre-treated Toma cheese whey could be used for PHA production by MMC, although scotta cheese whey supported higher PHA yield and productivity. The advantages of open MMCs include their plasticity and versatility to fast changing conditions; furthermore, no growth-medium sterilization is needed prior to fermentation. However, the use of pure cultures of efficient PHA producers may support better metabolic performances. Therefore, PHA-producing strains were isolated from a MMC, leading to the satisfactory identification of two bacterial strains, Citrobacter freundii and Leuconostoc spp., whose ability to accumulate PHAs in synthetic media was confirmed. A more detailed investigation by mass spectrometry revealed that the strain was L. mesenteroides. Although the validation of L. mesenteroides potential to produce PHA through fermentation of agro-industrial byproducts requires further investigations, this is the first study reporting PHA production with the Leuconostoc genus.
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Affiliation(s)
- Francesca Bosco
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Turin, Italy;
| | - Simona Cirrincione
- Structural and Functional Biochemistry, Laboratory of Microbial Biochemistry and Proteomics, Department of Life Sciences and Systems Biology, Università di Torino, 10123 Torino, Italy; (S.C.); (R.M.); (E.P.)
| | - Riccardo Carletto
- CNR-STIIMA, Consiglio Nazionale delle Ricerche- Istituto di Sistemi e Tecnologie Industriali Intelligenti per il Manifatturiero Avanzato, 13900 Biella, Italy;
| | - Luca Marmo
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Turin, Italy;
| | - Francesco Chiesa
- Department of Veterinary Science (DSV), Università degli Studi di Torino, 10095 Grugliasco, Italy;
| | - Roberto Mazzoli
- Structural and Functional Biochemistry, Laboratory of Microbial Biochemistry and Proteomics, Department of Life Sciences and Systems Biology, Università di Torino, 10123 Torino, Italy; (S.C.); (R.M.); (E.P.)
| | - Enrica Pessione
- Structural and Functional Biochemistry, Laboratory of Microbial Biochemistry and Proteomics, Department of Life Sciences and Systems Biology, Università di Torino, 10123 Torino, Italy; (S.C.); (R.M.); (E.P.)
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20
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Pontonio E, Montemurro M, De Gennaro GV, Miceli V, Rizzello CG. Antihypertensive Peptides from Ultrafiltration and Fermentation of the Ricotta Cheese Exhausted Whey: Design and Characterization of a Functional Ricotta Cheese. Foods 2021; 10:foods10112573. [PMID: 34828854 PMCID: PMC8623162 DOI: 10.3390/foods10112573] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 10/19/2021] [Accepted: 10/22/2021] [Indexed: 11/30/2022] Open
Abstract
Aiming at valorizing the ricotta cheese exhausted whey (RCEW), one of the most abundant by-products from the dairy industry, a biotechnological protocol to obtain bioactive peptides with angiotensin-I-converting enzyme (ACE)—inhibitory activity was set up. The approach was based on the combination of membrane filtration and fermentation. A Lactobacillus helveticus strain selected to be used as starter for the fermentation of the ultrafiltration protein-rich retentate (R-UF) obtained from RCEW. The fermented R-UF was characterized by a high anti-ACE activity. Peptides responsible for the bioactivity were purified and identified through nano-LC–ESI–MS/MS. The sequences identified in the purified active fractions of the fermented R-UF showed partial or complete overlapping with previously reported κ-casein antihypertensive fragments. The fermented R-UF was spray-dried and used to enrich ricotta cheese at different fortification level (1 and 5% w/w). An integrated approach including the assessment of the microbiological, chemical, functional, textural, and sensory properties was used to characterize the fortified products. A significantly higher anti-ACE activity was found in the ricotta cheese fortified with fermented R-UF as compared to the control and to the samples obtained with the unfermented R-UF fraction at the same levels of fortification. In particular, a 100 g portion of the ricotta cheese produced at 5% fortification level contained circa 30 mg of bioactive peptides. The fortification led to a moderate acidification, increased hardness and chewiness, and decreased the milk odor and taste of the ricotta cheese as compared to the control, while flavor persistence and sapidity improved.
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Affiliation(s)
- Erica Pontonio
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, via Giovanni Amendola 165/A, 70126 Bari, Italy; (E.P.); (M.M.); (G.V.D.G.)
| | - Marco Montemurro
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, via Giovanni Amendola 165/A, 70126 Bari, Italy; (E.P.); (M.M.); (G.V.D.G.)
| | - Gina Valeria De Gennaro
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, via Giovanni Amendola 165/A, 70126 Bari, Italy; (E.P.); (M.M.); (G.V.D.G.)
| | - Valerio Miceli
- ENEA Research Centre, Department for Sustainability, 72100 Brindisi, Italy;
| | - Carlo Giuseppe Rizzello
- Department of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Correspondence: ; Tel.: +39-0805442945
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21
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Sportelli MC, Ancona A, Volpe A, Gaudiuso C, Lavicita V, Miceli V, Conte A, Del Nobile MA, Cioffi N. A New Nanocomposite Packaging Based on LASiS-Generated AgNPs for the Preservation of Apple Juice. Antibiotics (Basel) 2021; 10:760. [PMID: 34206690 PMCID: PMC8300681 DOI: 10.3390/antibiotics10070760] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/21/2021] [Accepted: 06/21/2021] [Indexed: 01/15/2023] Open
Abstract
Designing bioactive materials, with controlled metal ion release, exerting a significant biological action and associated to low toxicity for humans, is nowadays one of the most important challenges for our community. The most looked-for nanoantimicrobials are capable of releasing metal species with defined kinetic profiles, either by slowing down or inhibiting bacterial growth and pathogenic microorganism diffusion. In this study, laser ablation synthesis in solution (LASiS) has been used to produce bioactive Ag-based nanocolloids, in isopropyl alcohol, which can be used as water-insoluble nano-reservoirs in composite materials like poly(3-hydroxybutyrate-co-3-hydroxyvalerate). Infrared spectroscopy was used to evaluate the chemical state of pristine polymer and final composite material, thus providing useful information about synthesis processes, as well as storage and processing conditions. Transmission electron microscopy was exploited to study the morphology of nano-colloids, along with UV-Vis for bulk chemical characterization, highlighting the presence of spheroidal particles with average diameter around 12 nm. Electro-thermal atomic absorption spectroscopy was used to investigate metal ion release from Ag-modified products, showing a maximum release around 60 ppb, which ensures an efficient antimicrobial activity, being much lower than what recommended by health institutions. Analytical spectroscopy results were matched with bioactivity tests carried out on target microorganisms of food spoilage.
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Affiliation(s)
- Maria Chiara Sportelli
- Chemistry Department, University of Bari, Via Orabona 4, 70126 Bari, Italy;
- Physics Department, Institute of Photonics and Nanotechnology—National Research Council (IFN-CNR), University of Bari, Via Amendola 173, 70126 Bari, Italy; (A.A.); (A.V.); (C.G.)
| | - Antonio Ancona
- Physics Department, Institute of Photonics and Nanotechnology—National Research Council (IFN-CNR), University of Bari, Via Amendola 173, 70126 Bari, Italy; (A.A.); (A.V.); (C.G.)
- Physics Department, University of Bari, Via Orabona 4, 70126 Bari, Italy
| | - Annalisa Volpe
- Physics Department, Institute of Photonics and Nanotechnology—National Research Council (IFN-CNR), University of Bari, Via Amendola 173, 70126 Bari, Italy; (A.A.); (A.V.); (C.G.)
- Physics Department, University of Bari, Via Orabona 4, 70126 Bari, Italy
| | - Caterina Gaudiuso
- Physics Department, Institute of Photonics and Nanotechnology—National Research Council (IFN-CNR), University of Bari, Via Amendola 173, 70126 Bari, Italy; (A.A.); (A.V.); (C.G.)
- Physics Department, University of Bari, Via Orabona 4, 70126 Bari, Italy
| | - Valentina Lavicita
- Department of Agricultural Sciences, Food and Environment, University of Foggia, Via Napoli 25, 71122 Foggia, Italy; (V.L.); (A.C.); (M.A.D.N.)
| | - Valerio Miceli
- Ente per le Nuove Tecnologie, l’Energia e l’Ambiente (ENEA) Research Center, BIOAG Division-ss Appia km 700, 72100 Brindisi, Italy;
| | - Amalia Conte
- Department of Agricultural Sciences, Food and Environment, University of Foggia, Via Napoli 25, 71122 Foggia, Italy; (V.L.); (A.C.); (M.A.D.N.)
| | - Matteo Alessandro Del Nobile
- Department of Agricultural Sciences, Food and Environment, University of Foggia, Via Napoli 25, 71122 Foggia, Italy; (V.L.); (A.C.); (M.A.D.N.)
| | - Nicola Cioffi
- Chemistry Department, University of Bari, Via Orabona 4, 70126 Bari, Italy;
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22
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Analysis of Polyhydroxyalkanoates Granules in Haloferax mediterranei by Double-Fluorescence Staining with Nile Red and SYBR Green by Confocal Fluorescence Microscopy. Polymers (Basel) 2021; 13:polym13101582. [PMID: 34069083 PMCID: PMC8156647 DOI: 10.3390/polym13101582] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/04/2021] [Accepted: 05/12/2021] [Indexed: 11/20/2022] Open
Abstract
Haloferaxmediterranei is a haloarchaeon of high interest in biotechnology because it produces and mobilizes intracellular polyhydroxyalkanoate (PHA) granules during growth under stress conditions (limitation of phosphorous in the culture media), among other interesting metabolites (enzymes, carotenoids, etc.). The capability of PHA production by microbes can be monitored with the use of staining-based methods. However, the staining of haloarchaea cells is a challenging task; firstly, due to the high ionic strength of the medium, which is inappropriate for most of dyes, and secondly, due to the low permeability of the haloarchaea S-layer to macromolecules. In this work, Haloferax mediterranei is used as a halophilic archaeon model to describe an optimized protocol for the visualization and analysis of intracellular PHA granules in living cells. The method is based on double-fluorescence staining using Nile red and SYBR Green by confocal fluorescence microscopy. Thanks to this method, the capability of PHA production by new haloarchaea isolates could be easily monitored.
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Zandona E, Blažić M, Režek Jambrak A. Whey Utilization: Sustainable Uses and Environmental Approach. Food Technol Biotechnol 2021; 59:147-161. [PMID: 34316276 PMCID: PMC8284110 DOI: 10.17113/ftb.59.02.21.6968] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 04/20/2021] [Indexed: 12/02/2022] Open
Abstract
The dairy industry produces large amounts of whey as a by- or co-product, which has led to considerable environmental problems due to its high organic matter content. Over the past decades, possibilities of more environmentally and economically efficient whey utilisation have been studied, primarily to convert unwanted end products into a valuable raw material. Sustainable whey management is mostly oriented to biotechnological and food applications for the development of value-added products such as whey powders, whey proteins, functional food and beverages, edible films and coatings, lactic acid and other biochemicals, bioplastic, biofuels and similar valuable bioproducts. This paper provides an overview of the sustainable utilization of whey and its constituents, considering new refining approaches and integrated processes to convert whey, or lactose and whey proteins to high value-added whey-based products.
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Affiliation(s)
- Elizabeta Zandona
- Karlovac University of Applied Sciences, Trg J.J. Strossmayera 9, 47000 Karlovac, Croatia
| | - Marijana Blažić
- Karlovac University of Applied Sciences, Trg J.J. Strossmayera 9, 47000 Karlovac, Croatia
| | - Anet Režek Jambrak
- Faculty of Food technology and Biotechnology, Pierottijeva 6, 10000 Zagreb, Croatia
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Haloarchaea as Cell Factories to Produce Bioplastics. Mar Drugs 2021; 19:md19030159. [PMID: 33803653 PMCID: PMC8003077 DOI: 10.3390/md19030159] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/03/2021] [Accepted: 03/16/2021] [Indexed: 11/16/2022] Open
Abstract
Plastic pollution is a worldwide concern causing the death of animals (mainly aquatic fauna) and environmental deterioration. Plastic recycling is, in most cases, difficult or even impossible. For this reason, new research lines are emerging to identify highly biodegradable bioplastics or plastic formulations that are more environmentally friendly than current ones. In this context, microbes, capable of synthesizing bioplastics, were revealed to be good models to design strategies in which microorganisms can be used as cell factories. Recently, special interest has been paid to haloarchaea due to the capability of some species to produce significant concentrations of polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), and polyhydroxyvalerate (PHV) when growing under a specific nutritional status. The growth of those microorganisms at the pilot or industrial scale offers several advantages compared to that of other microbes that are bioplastic producers. This review summarizes the state of the art of bioplastic production and the most recent findings regarding the production of bioplastics by halophilic microorganisms with special emphasis on haloarchaea. Some protocols to produce/analyze bioplastics are highlighted here to shed light on the potential use of haloarchaea at the industrial scale to produce valuable products, thus minimizing environmental pollution by plastics made from petroleum.
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25
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Biosynthesis of Polyhydroxyalkanoates from Defatted Chlorella Biomass as an Inexpensive Substrate. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11031094] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Microalgae biomass has been recently used as an inexpensive substrate for the industrial production of polyhydroxyalkanoates (PHAs). In this work, a dilute acid pretreatment using 0.3 N of hydrochloric acid (HCl) was performed to extract reducing sugars from 10% (w/v) of defatted Chlorella biomass (DCB). The resulting HCl DCB hydrolysate was used as a renewable substrate to assess the ability of three bacterial strains, namely Bacillus megaterium ALA2, Cupriavidus necator KCTC 2649, and Haloferax mediterranei DSM 1411, to produce PHA in shake flasks. The results show that under 20 g/L of DCB hydrolysate derived sugar supplementation, the cultivated strains successfully accumulated PHA up to 29.7–75.4% of their dry cell weight (DCW). Among the cultivated strains, C. necator KCTC 2649 exhibited the highest PHA production (7.51 ± 0.20 g/L, 75.4% of DCW) followed by H. mediterranei DSM 1411 and B. megaterium ALA2, for which a PHA content of 3.79 ± 0.03 g/L (55.5% of DCW) and 0.84 ± 0.06 g/L (29.7% of DCW) was recorded, respectively. Along with PHA, a maximum carotenoid content of 1.80 ± 0.16 mg/L was produced by H. mediterranei DSM 1411 at 120 h of cultivation in shake flasks. PHA and carotenoid production increased by 1.45- and 1.37-fold, respectively, when HCl DCB hydrolysate biotransformation was upscaled to a 1 L of working volume fermenter. Based on FTIR and 1H NMR analysis, PHA polymers accumulated by B. megaterium ALA2 and C. necator KCTC 2649 were identified as homopolymers of poly(3-hydroxybutyrate). However, a copolymer of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with a 3-hydroxyvalerate fraction of 10.5 mol% was accumulated by H. mediterranei DSM 1411.
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26
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Branduardi P. Closing the loop: the power of microbial biotransformations from traditional bioprocesses to biorefineries, and beyond. Microb Biotechnol 2021; 14:68-73. [PMID: 33275324 PMCID: PMC7888447 DOI: 10.1111/1751-7915.13713] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 11/04/2020] [Indexed: 12/20/2022] Open
Abstract
The power of microorganisms in manipulating diverse matrices and in favouring the flux of elements and molecules through biogeochemical cycles developed in the natural environment, but they also managed to take advantage of some niches created by humans. Therefore, inspired by learning these lessons from nature, we can implement biobased processes at industrial level, for diminishing our dependency on fossil resources and to return molecules to their turnover in a compatible timeframe and with reduced environmental impact.
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Affiliation(s)
- Paola Branduardi
- Department of Biotechnology and BiosciencesUniversity of Milano‐BicoccaPiazza della Scienza 2Milano20126Italy
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