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Kriechbaum R, Spadiut O, Kopp J. Bioconversion of Furanic Compounds by Chlorella vulgaris-Unveiling Biotechnological Potentials. Microorganisms 2024; 12:1222. [PMID: 38930604 PMCID: PMC11205514 DOI: 10.3390/microorganisms12061222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Lignocellulosic biomass is abundant on Earth, and there are multiple acidic pretreatment options to separate the cellulose, hemicellulose, and lignin fraction. By doing so, the fermentation inhibitors 5-Hydroxymethylfurfural (HMF) and furfural (FF) are produced in varying concentrations depending on the hydrolyzed substrate. In this study, the impact of these furanic compounds on Chlorella vulgaris growth and photosynthetic activity was analyzed. Both compounds led to a prolonged lag phase in Chlorella vulgaris growth. While the photosynthetic yield Y(II) was not significantly influenced in cultivations containing HMF, FF significantly reduced Y(II). The conversion of 5-Hydroxymethylfurfural and furfural to 5-Hydroxymethyl-2-Furoic Acid and 2-Furoic Acid was observed. In total, 100% of HMF and FF was converted in photoautotrophic and mixotrophic Chlorella vulgaris cultivations. The results demonstrate that Chlorella vulgaris is, as of now, the first known microalgal species converting furanic compounds.
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Affiliation(s)
| | | | - Julian Kopp
- Research Division: Biochemical Engineering, Integrated Bioprocess Development, Institute of Chemical, Environmental and Bioscience Engineering, Technische Universität Wien, Gumpendorferstraße 1a, 1060 Wien, Austria; (R.K.); (O.S.)
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2
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Hu Y, Liu G, Sun C, Wu S. Volatile Organic Compounds Produced by a Deep-Sea Bacterium Efficiently Inhibit the Growth of Pseudomonas aeruginosa PAO1. Mar Drugs 2024; 22:233. [PMID: 38786624 PMCID: PMC11122958 DOI: 10.3390/md22050233] [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: 04/19/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/25/2024] Open
Abstract
The deep-sea bacterium Spongiibacter nanhainus CSC3.9 has significant inhibitory effects on agricultural pathogenic fungi and human pathogenic bacteria, especially Pseudomonas aeruginosa, the notorious multidrug-resistant pathogen affecting human public health. We demonstrate that the corresponding antibacterial agents against P. aeruginosa PAO1 are volatile organic compounds (VOCs, namely VOC-3.9). Our findings show that VOC-3.9 leads to the abnormal cell division of P. aeruginosa PAO1 by disordering the expression of several essential division proteins associated with septal peptidoglycan synthesis. VOC-3.9 hinders the biofilm formation process and promotes the biofilm dispersion process of P. aeruginosa PAO1 by affecting its quorum sensing systems. VOC-3.9 also weakens the iron uptake capability of P. aeruginosa PAO1, leading to reduced enzymatic activity associated with key metabolic processes, such as reactive oxygen species (ROS) scavenging. Overall, our study paves the way to developing antimicrobial compounds against drug-resistant bacteria by using volatile organic compounds.
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Affiliation(s)
- Yuanyuan Hu
- College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China;
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao 266071, China
- Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Ge Liu
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao 266071, China
- Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Chaomin Sun
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao 266071, China
- Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- College of Earth Science, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Shimei Wu
- College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China;
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3
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Wang XY, Xu YM, Lau ATY. Proteogenomics in Cancer: Then and Now. J Proteome Res 2023; 22:3103-3122. [PMID: 37725793 DOI: 10.1021/acs.jproteome.3c00196] [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: 09/21/2023]
Abstract
For years, the paths of sequencing technologies and mass spectrometry have occurred in isolation, with each developing its own unique culture and expertise. These two technologies are crucial for inspecting complementary aspects of the molecular phenotype across the central dogma. Integrative multiomics strives to bridge the analysis gap among different fields to complete more comprehensive mechanisms of life events and diseases. Proteogenomics is one integrated multiomics field. Here in this review, we mainly summarize and discuss three aspects: workflow of proteogenomics, proteogenomics applications in cancer research, and the SWOT (Strengths, Weaknesses, Opportunities, Threats) analysis of proteogenomics in cancer research. In conclusion, proteogenomics has a promising future as it clarifies the functional consequences of many unannotated genomic abnormalities or noncanonical variants and identifies driver genes and novel therapeutic targets across cancers, which would substantially accelerate the development of precision oncology.
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Affiliation(s)
- Xiu-Yun Wang
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, People's Republic of China
| | - Yan-Ming Xu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, People's Republic of China
| | - Andy T Y Lau
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, People's Republic of China
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4
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Zhao D, Yang Y, Tham YJ, Zou S. Emission of marine volatile organic compounds (VOCs) by phytoplankton- a review. MARINE ENVIRONMENTAL RESEARCH 2023; 191:106177. [PMID: 37741052 DOI: 10.1016/j.marenvres.2023.106177] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/30/2023] [Accepted: 09/11/2023] [Indexed: 09/25/2023]
Abstract
Oceans cover over 71% of the Earth's surface and play crucial roles in regulating the global climate. In the marine boundary layer, the levels of volatile organic compounds (VOCs) have been shown to have positive relations with the marine algal biomass, indicating that the marine biological activities can be an important biogenic VOCs (BVOCs) source. The emitted BVOCs will enhance the formation of secondary organic aerosols, and perturb the radiative forcing, which ultimately affects the climate. To date, knowledge on the emission processes (i.e., synthesis processes and emission rates) of BVOCs from marine phytoplankton is still lacking compared to the more well-known BVOCs released from terrestrial plants. In this review, we focus on the BVOCs emissions from the marine phytoplankton. Based on the available literature from field and laboratory studies, we listed the types of BVOCs being emitted by different marine phytoplankton species, summarized the diversity of BVOCs related to phytoplankton taxonomy and physiology and abiotic factors affecting their emissions in various marine environments, and discussed the biosynthesis and ecological function of important marine VOCs such as DMS, terpenoids and VHCs from phytoplankton. Finally, we highlighted the existing gaps in the current knowledge and the needs of future study for better understanding the physiological and ecological roles of BVOCs emission from marine phytoplankton.
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Affiliation(s)
- Danna Zhao
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, China
| | - Ying Yang
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 519000, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai, 519082, China; Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai, 519082, China.
| | - Yee Jun Tham
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai, 519082, China; Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai, 519082, China
| | - Shichun Zou
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 519000, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai, 519082, China; Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai, 519082, China
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5
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Tesson SVM, Barbato M, Rosati B. Aerosolization flux, bio-products, and dispersal capacities in the freshwater microalga Limnomonas gaiensis (Chlorophyceae). Commun Biol 2023; 6:809. [PMID: 37537210 PMCID: PMC10400582 DOI: 10.1038/s42003-023-05183-5] [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: 02/27/2023] [Accepted: 07/26/2023] [Indexed: 08/05/2023] Open
Abstract
Little is known on the spreading capacities of Limnomonas gaiensis across freshwater lakes in Northern Europe. In this study, we show that the species could successfully be aerosolized from water sources by bubble bursting (2-40 particles.cm-3), irrespectively of its density in the water source or of the jet velocity used to simulate wave breaking. The species viability was impacted by both water turbulences and aerosolization. The survival rate of emitted cells was low, strain-specific, and differently impacted by bubble busting processes. The entity "microalga and bionts" could produce ethanol, and actively nucleate ice (principally ≤-18 °C) mediated soluble ice nucleation active proteins, thereby potentially impacting smog and cloud formation. Moreover, smallest strains could better cope with applied stressors. Survival to short-term exposure to temperatures down to -21 °C and freezing events further suggest that L. gaiensis could be air dispersed and contribute to their deposition.
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Affiliation(s)
- Sylvie V M Tesson
- Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark.
- Department of Biology, Aarhus University, Aarhus, Denmark.
| | - Marta Barbato
- Department of Biology, Aarhus University, Aarhus, Denmark
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Casanova LM, Macrae A, de Souza JE, Neves Junior A, Vermelho AB. The Potential of Allelochemicals from Microalgae for Biopesticides. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091896. [PMID: 37176954 PMCID: PMC10181251 DOI: 10.3390/plants12091896] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023]
Abstract
Improvements in agricultural productivity are required to meet the demand of a growing world population. Phytopathogens, weeds, and insects are challenges to agricultural production. The toxicity and widespread application of persistent synthetic pesticides poses a major threat to human and ecosystem health. Therefore, sustainable strategies to control pests are essential for agricultural systems to enhance productivity within a green paradigm. Allelochemicals are a less persistent, safer, and friendly alternative to efficient pest management, as they tend to be less toxic to non-target organisms and more easily degradable. Microalgae produce a great variety of allelopathic substances whose biocontrol potential against weeds, insects, and phytopathogenic fungi and bacteria has received much attention. This review provides up-to-date information and a critical perspective on allelochemicals from microalgae and their potential as biopesticides.
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Affiliation(s)
- Livia Marques Casanova
- Biotechnology Center-Bioinovar, Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
| | - Andrew Macrae
- Sustainable Biotechnology and Microbial Bioinformatics Laboratory, Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
| | - Jacqueline Elis de Souza
- Biotechnology Center-Bioinovar, Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
| | - Athayde Neves Junior
- Biotechnology Center-Bioinovar, Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
| | - Alane Beatriz Vermelho
- Biotechnology Center-Bioinovar, Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
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7
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Plaas HE, Paerl RW, Baumann K, Karl C, Popendorf KJ, Barnard MA, Chang NY, Curtis NP, Huang H, Mathieson OL, Sanchez J, Maizel DJ, Bartenfelder AN, Braddy JS, Hall NS, Rossignol KL, Sloup R, Paerl HW. Harmful cyanobacterial aerosolization dynamics in the airshed of a eutrophic estuary. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 852:158383. [PMID: 36057302 DOI: 10.1016/j.scitotenv.2022.158383] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/29/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
In addition to obvious negative effects on water quality in eutrophic aquatic ecosystems, recent work suggests that cyanobacterial harmful algal blooms (CHABs) also impact air quality via emissions carrying cyanobacterial cells and cyanotoxins. However, the environmental controls on CHAB-derived aerosol and its potential public health impacts remain largely unknown. Accordingly, the aims of this study were to 1) investigate the occurrence of microcystins (MC) and putatively toxic cyanobacterial communities in particulate matter ≤ 2.5 μm in diameter (PM2.5), 2) elucidate environmental conditions promoting their aerosolization, and 3) identify associations between CHABs and PM2.5 concentrations in the airshed of the Chowan River-Albemarle Sound, an oligohaline, eutrophic estuary in eastern North Carolina, USA. In summer 2020, during peak CHAB season, continuous PM2.5 samples and interval water samples were collected at two distinctive sites for targeted analyses of cyanobacterial community composition and MC concentration. Supporting air and water quality measurements were made in parallel to contextualize findings and permit statistical analyses of environmental factors driving changes in CHAB-derived aerosol. MC concentrations were low throughout the study, but a CHAB dominated by Dolichospermum occurred from late June to early August. Several aquatic CHAB genera recovered from Chowan River surface water were identified in PM2.5 during multiple time points, including Anabaena, Aphanizomenon, Dolichospermum, Microcystis, and Pseudanabaena. Cyanobacterial enrichment in PM2.5 was indistinctive between subspecies, but at one site during the early bloom, we observed the simultaneous enrichment of several cyanobacterial genera in PM2.5. In association with the CHAB, the median PM2.5 mass concentration increased to 8.97 μg m-3 (IQR = 5.15), significantly above the non-bloom background of 5.35 μg m-3 (IQR = 3.70) (W = 1835, p < 0.001). Results underscore the need for highly resolved temporal measurements to conclusively investigate the role that CHABs play in regional air quality and respiratory health risk.
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Affiliation(s)
- Haley E Plaas
- UNC-Chapel Hill, Earth, Marine, and Environmental Sciences, Institute of Marine Sciences, 3431 Arendell St., Morehead City, NC 28577, United States of America; UNC-Chapel Hill, Gillings School of Global Public Health, Department of Environmental Sciences and Engineering, 135 Dauer Dr., Chapel Hill, NC 27599, United States of America.
| | - Ryan W Paerl
- North Carolina State University, Department of Marine, Earth, and Atmospheric Sciences, Jordan Hall, 2800 Faucette Dr., Raleigh, NC 27607, United States of America
| | - Karsten Baumann
- UNC-Chapel Hill, Gillings School of Global Public Health, Department of Environmental Sciences and Engineering, 135 Dauer Dr., Chapel Hill, NC 27599, United States of America
| | - Colleen Karl
- Chowan Edenton Environmental Group, PO Box 271, Tyner, NC 27980, United States of America
| | - Kimberly J Popendorf
- University of Miami, Rosenstiel School of Marine & Atmospheric Science, 4600 Rickenbacker Cswy, Miami, FL 33149, United States of America
| | - Malcolm A Barnard
- UNC-Chapel Hill, Earth, Marine, and Environmental Sciences, Institute of Marine Sciences, 3431 Arendell St., Morehead City, NC 28577, United States of America
| | - Naomi Y Chang
- UNC-Chapel Hill, Gillings School of Global Public Health, Department of Environmental Sciences and Engineering, 135 Dauer Dr., Chapel Hill, NC 27599, United States of America
| | - Nathaniel P Curtis
- North Carolina State University, Department of Marine, Earth, and Atmospheric Sciences, Jordan Hall, 2800 Faucette Dr., Raleigh, NC 27607, United States of America
| | - Hwa Huang
- North Carolina State University, Department of Marine, Earth, and Atmospheric Sciences, Jordan Hall, 2800 Faucette Dr., Raleigh, NC 27607, United States of America
| | - Olivia L Mathieson
- North Carolina State University, Department of Marine, Earth, and Atmospheric Sciences, Jordan Hall, 2800 Faucette Dr., Raleigh, NC 27607, United States of America
| | - Joel Sanchez
- North Carolina State University, Department of Marine, Earth, and Atmospheric Sciences, Jordan Hall, 2800 Faucette Dr., Raleigh, NC 27607, United States of America
| | - Daniela J Maizel
- University of Miami, Rosenstiel School of Marine & Atmospheric Science, 4600 Rickenbacker Cswy, Miami, FL 33149, United States of America
| | - Amy N Bartenfelder
- UNC-Chapel Hill, Earth, Marine, and Environmental Sciences, Institute of Marine Sciences, 3431 Arendell St., Morehead City, NC 28577, United States of America
| | - Jeremy S Braddy
- UNC-Chapel Hill, Earth, Marine, and Environmental Sciences, Institute of Marine Sciences, 3431 Arendell St., Morehead City, NC 28577, United States of America
| | - Nathan S Hall
- UNC-Chapel Hill, Earth, Marine, and Environmental Sciences, Institute of Marine Sciences, 3431 Arendell St., Morehead City, NC 28577, United States of America
| | - Karen L Rossignol
- UNC-Chapel Hill, Earth, Marine, and Environmental Sciences, Institute of Marine Sciences, 3431 Arendell St., Morehead City, NC 28577, United States of America
| | - Randolph Sloup
- UNC-Chapel Hill, Earth, Marine, and Environmental Sciences, Institute of Marine Sciences, 3431 Arendell St., Morehead City, NC 28577, United States of America
| | - Hans W Paerl
- UNC-Chapel Hill, Earth, Marine, and Environmental Sciences, Institute of Marine Sciences, 3431 Arendell St., Morehead City, NC 28577, United States of America; UNC-Chapel Hill, Gillings School of Global Public Health, Department of Environmental Sciences and Engineering, 135 Dauer Dr., Chapel Hill, NC 27599, United States of America
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8
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Pozzer AC, Gómez PA, Weiss J. Volatile organic compounds in aquatic ecosystems - Detection, origin, significance and applications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156155. [PMID: 35609693 DOI: 10.1016/j.scitotenv.2022.156155] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 05/06/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
Volatile organic compounds (VOCs) include a broad range of compounds. Their production influences a large number of processes, having direct and secondary effects on different fields, such as climate change, economy and ecology. Although our planet is primarily covered with water (~70% of the globe surface), the information on aquatic VOCs, compared to the data available for the terrestrial environments, is still limited. Regardless of the difficulty in collecting and analysing data, because of their extreme complexity, diversification and important spatial-temporal emission variation, it was demonstrated that aquatic organisms are able to produce a variety of bioactive compounds. This production happens in response to abiotic and biotic stresses, evidencing the fundamental role of these metabolites, both in terms of composition and amount, in providing important ecological information and possible non-invasive tools to monitor different biological systems. The study of these compounds is an important and productive task with possible and interesting impacts in future practical applications in different fields. This review aims to summarize the knowledge on the aquatic VOCs, the recent advances in understanding their diverse roles and ecological impacts, the generally used methodology for their sampling and analysis, and their enormous potential as non-invasive, non-destructive and financeable affordable real-time biomonitoring tool, both in natural habitats and in controlled industrial situations. Finally, the possible future technical applications, highlighting their economic and social potential, such as the possibility to use VOCs as valuable alternative source of chemicals and as biocontrol and bioregulation agents, are emphasized.
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Affiliation(s)
- Anna Caterina Pozzer
- Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, Campus Muralla del Mar. 30202, Cartagena, Murcia, Spain
| | - Perla A Gómez
- Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, Campus Muralla del Mar. 30202, Cartagena, Murcia, Spain
| | - Julia Weiss
- Molecular Genetics, Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, Campus Muralla del Mar. 30202, Cartagena, Murcia, Spain.
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9
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Changes in volatile and fatty acid compositions of selected microalgal suspensions with high pressure homogenization. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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The Role of Photo-Cycles in the Modulation of Growth and Biochemical Profile of Microalgae: Part I—Food Interest Compounds. Life (Basel) 2022; 12:life12030462. [PMID: 35330213 PMCID: PMC8952382 DOI: 10.3390/life12030462] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 11/17/2022] Open
Abstract
The objective of this work was to evaluate the effect of different photo-cycles on the growth and biochemical profile of Scenedesmus obliquus CPCC05, focusing on food interest compounds. The photo-cycle conditions were separated into three groups: long-term photo-cycles (24:0, 22:2, 20:4, 18:6, 12:12, and 10:14 (h:h)), frequency photo-cycles (2, 4, 8, 12, 24, and 48 times per day (t/d)), and short photo-cycles (0.91:0.09, 0.83:0.17, 0.75:0.25, and 0.50:0.50 (s:s)) of light:dark, respectively. The results showed these microalgae can store enough energy to support cell growth for continuous periods of up to 2 h in the dark, without affecting the productivity of the process. This 2 h, when divided into 2 cycles per day (2 t/d), showed the best growth condition (3700 mg L−1), generation time (14.40 h), and maximum biomass productivity (21.43 mg L h−1). This photo-cycle of 2 t/d was also the best condition for the production of total sterols. However, the values of polyunsaturated fatty acids, lipid content, and amino acids obtained higher yields in the short photo-cycle of 0.75:0.25. Thus, the modulation of light cycles becomes an important tool for boosting and directing the production of target molecules in phototrophic cultures of microalgae.
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11
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Coleman B, Van Poucke C, Dewitte B, Ruttens A, Moerdijk-Poortvliet T, Latsos C, De Reu K, Blommaert L, Duquenne B, Timmermans K, van Houcke J, Muylaert K, Robbens J. Potential of microalgae as flavoring agents for plant-based seafood alternatives. FUTURE FOODS 2022. [DOI: 10.1016/j.fufo.2022.100139] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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12
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Zhu X, Healy LE, Sevindik O, Sun DW, Selli S, Kelebek H, Tiwari BK. Impacts of novel blanching treatments combined with commercial drying methods on the physicochemical properties of Irish brown seaweed Alaria esculenta. Food Chem 2022; 369:130949. [PMID: 34488133 DOI: 10.1016/j.foodchem.2021.130949] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/21/2021] [Accepted: 08/23/2021] [Indexed: 01/15/2023]
Abstract
Alaria esculenta is one of the most abundant edible brown seaweeds in Irelandandisconsidered an excellent source of nutrients, sought after by the food, nutraceutical and pharmaceutical industries. Seaweed is typically blanched and dried prior to consumption to enhance the end-product quality attributes and shelf life. Three blanching techniques were examined in this work; conventional hot water blanching, novel ultrasound blanching and microwave blanching. The L* and b*colour metrics were affected significantly (P < 0.01) by the processing methods. There were 76 volatile compounds detected in blanched and dehydrated Alaria esculenta. Freeze-dried samples after treatment with microwave alone (at 1000 W) and microwave (800 W) combined with ultrasound (at 50% amplitude) had the highest retention rate of volatile compounds (up to 98.61%). Regarding mineral content, drying methods significantly affected (P < 0.05) the content of Ca, Co, Cu and Fe, while blanching treatments significantly affected (P < 0.05) the content of Na, Cu, Fe and Mn.
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Affiliation(s)
- Xianglu Zhu
- Teagasc Food Research Centre, Ashtown, Dublin, Ireland; Food Refrigeration and Computerised Food Technology (FRCFT), School of Biosystems and Food Engineering, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland
| | - Laura E Healy
- Teagasc Food Research Centre, Ashtown, Dublin, Ireland; Department of Food Science and Environmental Health, Technological University Dublin, Dublin, Ireland
| | - Onur Sevindik
- Department of Food Engineering, Faculty of Agriculture, Cukurova University, 01330 Adana, Turkey; Department of Food Engineering, Faculty of Engineering, Adana AlparslanTurkes Science and Technology University, Adana, Turkey
| | - Da-Wen Sun
- Food Refrigeration and Computerised Food Technology (FRCFT), School of Biosystems and Food Engineering, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland.
| | - Serkan Selli
- Department of Food Engineering, Faculty of Agriculture, Cukurova University, 01330 Adana, Turkey; Department of Nutrition and Dietetics, Faculty of Health Sciences, Cukurova University, 01330 Adana, Turkey
| | - Hasim Kelebek
- Department of Food Engineering, Faculty of Engineering, Adana AlparslanTurkes Science and Technology University, Adana, Turkey
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Brilli F, Dani KGS, Pasqualini S, Costarelli A, Cannavò S, Paolocci F, Zittelli GC, Mugnai G, Baraldi R, Loreto F. Exposure to different light intensities affects emission of volatiles and accumulations of both pigments and phenolics in Azolla filiculoides. PHYSIOLOGIA PLANTARUM 2022; 174:e13619. [PMID: 34988977 PMCID: PMC9305523 DOI: 10.1111/ppl.13619] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 12/03/2021] [Indexed: 06/01/2023]
Abstract
Many agronomic trials demonstrated the nitrogen-fixing ability of the ferns Azolla spp. and its obligate cyanobiont Trichormus azollae. In this study, we have screened the emission of volatile organic compounds (VOCs) and analyzed pigments (chlorophylls, carotenoids) as well as phenolic compounds in Azolla filiculoides-T. azollae symbionts exposed to different light intensities. Our results revealed VOC emission mainly comprising isoprene and methanol (~82% and ~13% of the overall blend, respectively). In particular, by dissecting VOC emission from A. filiculoides and T. azollae, we found that the cyanobacterium does not emit isoprene, whereas it relevantly contributes to the methanol flux. Enhanced isoprene emission capacity (15.95 ± 2.95 nmol m-2 s-1 ), along with increased content of both phenolic compounds and carotenoids, was measured in A. filiculoides grown for long-term under high (700 μmol m-2 s-1 ) rather than medium (400 μmol m-2 s-1 ) and low (100 μmol m-2 s-1 ) light intensity. Moreover, light-responses of chlorophyll fluorescence demonstrated that A. filiculoides was able to acclimate to high growth light. However, exposure of A. filiculoides from low (100 μmol m-2 s-1 ) to very high light (1000 μmol m-2 s-1 ) did not affect, in the short term, photosynthesis, but slightly decreased isoprene emission and leaf pigment content whereas, at the same time, dramatically raised the accumulation of phenolic compounds (i.e. deoxyanthocyanidins and phlobaphenes). Our results highlight a coordinated photoprotection mechanism consisting of isoprene emission and phenolic compounds accumulation employed by A. filiculoides to cope with increasing light intensities.
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Affiliation(s)
- Federico Brilli
- Institute for Sustainable Plant Protection (IPSP)National Research Council of Italy (CNR)Sesto FiorentinoItaly
| | - K. G. Srikanta Dani
- Institute for Sustainable Plant Protection (IPSP)National Research Council of Italy (CNR)Sesto FiorentinoItaly
| | - Stefania Pasqualini
- Department of Chemistry, Biology and BiotechnologyUniversity of PerugiaPerugiaItaly
| | - Alma Costarelli
- Department of Chemistry, Biology and BiotechnologyUniversity of PerugiaPerugiaItaly
| | - Sara Cannavò
- Department of Chemistry, Biology and BiotechnologyUniversity of PerugiaPerugiaItaly
| | - Francesco Paolocci
- Institute of Biosciences and BioResources (IBBR)National Research Council of Italy (CNR)PerugiaItaly
| | | | - Gianmarco Mugnai
- Institute of BioEconomy (IBE)National Research Council of Italy (CNR)Sesto FiorentinoItaly
| | - Rita Baraldi
- Institute of BioEconomy (IBE)National Research Council of Italy (CNR)BolognaItaly
| | - Francesco Loreto
- Institute for Sustainable Plant Protection (IPSP)National Research Council of Italy (CNR)Sesto FiorentinoItaly
- Department of BiologyThe University of Naples Federico IINaplesItaly
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14
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Nguyen DD, Sauer JS, Camarda LP, Sherman SL, Prather KA, Golden SS, Pomeroy R, Dorrestein PC, Simkovsky R. Grazer-induced changes in molecular signatures of cyanobacteria. ALGAL RES 2022. [DOI: 10.1016/j.algal.2021.102575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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15
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Liu M, Wu T, Zhao X, Zan F, Yang G, Miao Y. Cyanobacteria blooms potentially enhance volatile organic compound (VOC) emissions from a eutrophic lake: Field and experimental evidence. ENVIRONMENTAL RESEARCH 2021; 202:111664. [PMID: 34256073 DOI: 10.1016/j.envres.2021.111664] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 06/23/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
Eutrophication promotes massive cyanobacteria blooms (CBBs), leading to the release of volatile organic compounds (VOCs). To investigate the effects of cyanobacteria on VOC emissions, field campaigns were carried out in eutrophic Chaohu Lake at six sites with different microalgae densities during CBBs in summer 2019, and incubation experiments were performed in the laboratory. The results showed that the lake water was the primary source of VOCs at six sampling sites in Chaohu Lake during CBBs, with an average total VOC flux of 81.2 ± 20.6 μg m-2 h-1. Alkanes were the most abundantly emitted VOCs, with a share of 23.1-63.7% of total emitted VOCs, followed by aromatics (16.6-46.3%). The fluxes of total VOCs were significantly greater at sites B and/or C than at site A in July, and at site B' and/or C' than at site A' in August in Chaohu Lake. The fluxes of total VOCs from living and decayed cyanobacteria in the experimental treatments were two orders of magnitude higher than the corresponding values in the control treatments in the laboratory incubation. Taken together, these results suggested that CBBs potentially enhanced VOC emissions from the eutrophic lake, and that cyanobacteria acted as an important source of VOCs. Additionally, non-methane hydrocarbons (i.e., alkanes, alkenes, and aromatics) predominated among the released VOCs during the stabilization and senescence stages, while oxygenated volatile organic compounds (i.e. alcohols, aldehydes, ketones, esters, and furans) prevailed during the apoptosis stage and aromatics and volatile organic sulfur compounds predominated during the decomposition stage, suggesting that VOC emissions varied markedly at different life stages.
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Affiliation(s)
- Mengdi Liu
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241000, China
| | - Ting Wu
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241000, China; Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt, Wuhu, 241000, China.
| | - Xiaoyu Zhao
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241000, China
| | - Fengyu Zan
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241000, China; Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt, Wuhu, 241000, China.
| | - Geng Yang
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241000, China; Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt, Wuhu, 241000, China
| | - Yuqing Miao
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241000, China
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Abiotic and Biotic Damage of Microalgae Generate Different Volatile Organic Compounds (VOCs) for Early Diagnosis of Algal Cultures for Biofuel Production. Metabolites 2021; 11:metabo11100707. [PMID: 34677422 PMCID: PMC8541270 DOI: 10.3390/metabo11100707] [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: 08/29/2021] [Revised: 09/30/2021] [Accepted: 10/13/2021] [Indexed: 11/18/2022] Open
Abstract
Open microalgal ponds used in industrial biomass production are susceptible to a number of biotic and abiotic environmental stressors (e.g., grazers, pathogens, pH, temperature, etc.) resulting in pond crashes with high economic costs. Identification of signature chemicals to aid in rapid, non-invasive, and accurate identification of the stressors would facilitate targeted and effective treatment to save the algal crop from a catastrophic crash. Specifically, we were interested in identifying volatile organic compounds (VOCs) that can be used to as an early diagnostic for algal crop damage. Cultures of Microchloropsis gaditana were subjected to two forms of algal crop damage: (1) active grazing by the marine rotifer, Brachionus plicatilis, or (2) repeated freeze–thaw cycles. VOCs emitted above the headspace of these algal cultures were collected using fieldable solid phase microextraction (SPME) fibers. An untargeted analysis and identification of VOCs was conducted using gas chromatography-mass spectrometry (GC-MS). Diagnostic VOCs unique to each algal crop damage mechanism were identified. Active rotifer grazing of M. gaditana was characterized by the appearance of carotenoid degradation products, including β-cyclocitral and various alkenes. Freeze–thaw algae produced a different set of VOCs, including palmitoleic acid. Both rotifer grazing and freeze–thawed algae produced β-ionone as a VOC, possibly suggesting a common stress-induced cellular mechanism. Importantly, these identified VOCs were all absent from healthy algal cultures of M. gaditana. Early detection of biotic or abiotic environmental stressors will facilitate early diagnosis and application of targeted treatments to prevent algal pond crashes. Thus, our work further supports the use of VOCs for monitoring the health of algal ponds to ultimately enhance algal crop yields for production of biofuel.
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Francezon N, Tremblay A, Mouget JL, Pasetto P, Beaulieu L. Algae as a Source of Natural Flavors in Innovative Foods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11753-11772. [PMID: 34597023 DOI: 10.1021/acs.jafc.1c04409] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As a result of their nutritive values, algae have been used as a food resource for centuries, and there is a growing interest to use them as enrichment ingredients in food products. However, food product acceptance by consumers is strongly linked to their organoleptic properties, especially the aroma, taste, and a combination of the two, flavor. With regard to edible algae, "fresh seashore", "seafood-like", "cucumber green", and "earthy" are descriptors commonly used to define their aromas. Several families of molecules participate in the diversity and peculiarities of algal aromas: pungent sulfur compounds and marine halogenated components but also herbaceous fatty acid derivatives and fruity-floral terpenoids. In both macroalgae (seaweeds) and microalgae, these compounds are studied from a chemistry point of view (identification and quantification) and a sensorial point of view, involving sensorial evaluation by panelists. As a whole food, a food ingredient, or a feed, algae are valued for their nutritional composition and their health benefits. However, because the acceptance of food by consumers is so strongly linked to its sensorial features, studies have been performed to explore the aromas of algae, their impact on food, their evolution through processing, and their ability to produce selected aromas using biotechnology. This review aims at highlighting algal aromas from seaweed and microalgae as well as their use, their handling, and their processing in the food industry.
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Affiliation(s)
- Nellie Francezon
- Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Département des Sciences des Aliments, Université Laval, 2425 Rue de l'Agriculture, Québec City, Québec G1V 0A6, Canada
- Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (INRAE) 42 Rue Georges Morel, 49070 Beaucouzé, France
| | - Ariane Tremblay
- Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Département des Sciences des Aliments, Université Laval, 2425 Rue de l'Agriculture, Québec City, Québec G1V 0A6, Canada
| | - Jean-Luc Mouget
- Mer-Molécules-Santé (MMS), FR CNRS 3473 IUML, Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Pamela Pasetto
- Institut des Molécules et Matériaux du Mans (IMMM), UMR CNRS 6283, Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Lucie Beaulieu
- Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Département des Sciences des Aliments, Université Laval, 2425 Rue de l'Agriculture, Québec City, Québec G1V 0A6, Canada
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18
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Continuous measurements of volatile gases as detection of algae crop health. Proc Natl Acad Sci U S A 2021; 118:2106882118. [PMID: 34599100 PMCID: PMC8501783 DOI: 10.1073/pnas.2106882118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2021] [Indexed: 11/18/2022] Open
Abstract
Wide adoption of algae cultivation to produce environmentally sustainable biofuels and fine chemicals is currently hampered by large losses (10 to 30%) incurred by grazer infections. We show the usage of real-time chemical ionization mass spectrometry to rapidly identify gaseous indicators of grazer infections in cyanobacteria cultures. Grazing was detected significantly faster (up to 3 d) using real-time mass spectrometry than the current methods of microscopy and qPCR. By employing this technology, cultivators may be empowered to treat grazer infestations sooner, thereby protecting the crop and enhancing profitability. Algae cultivation in open raceway ponds is considered the most economical method for photosynthetically producing biomass for biofuels, chemical feedstocks, and other high-value products. One of the primary challenges for open ponds is diminished biomass yields due to attack by grazers, competitors, and infectious organisms. Higher-frequency observations are needed for detection of grazer infections, which can rapidly reduce biomass levels. In this study, real-time measurements were performed using chemical ionization mass spectrometry (CIMS) to monitor the impact of grazer infections on cyanobacterial cultures. Numerous volatile gases were produced during healthy growth periods from freshwater Synechococcus elongatus Pasteur Culture Collection (PCC) 7942, with 6-methyl-5-hepten-2-one serving as a unique metabolic indicator of exponential growth. Following the introduction of a Tetrahymena ciliate grazer, the concentrations of multiple volatile species were observed to change after a latent period as short as 18 h. Nitrogenous gases, including ammonia and pyrroline, were found to be reliable indicators of grazing. Detection of grazing by CIMS showed indicators of infections much sooner than traditional methods, microscopy, and continuous fluorescence, which did not detect changes until 37 to 76 h after CIMS detection. CIMS analysis of gases produced by PCC 7942 further shows a complex temporal array of biomass-dependent volatile gas production, which demonstrates the potential for using volatile gas analysis as a diagnostic for grazer infections. Overall, these results show promise for the use of continuous volatile metabolite monitoring for the detection of grazing in algal monocultures, potentially reducing current grazing-induced biomass losses, which could save hundreds of millions of dollars.
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Kinetics of transfer of volatile amphiphiles (fragrances) from vapors to aqueous drops and vice versa: Interplay of diffusion and barrier mechanisms. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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20
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Kaup M, Trull S, Hom EFY. On the move: sloths and their epibionts as model mobile ecosystems. Biol Rev Camb Philos Soc 2021; 96:2638-2660. [PMID: 34309191 PMCID: PMC9290738 DOI: 10.1111/brv.12773] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 06/18/2021] [Accepted: 06/21/2021] [Indexed: 12/20/2022]
Abstract
Sloths are unusual mobile ecosystems, containing a high diversity of epibionts living and growing in their fur as they climb slowly through the canopies of tropical forests. These epibionts include poorly studied algae, arthropods, fungi, and bacteria, making sloths likely reservoirs of unexplored biodiversity. This review aims to identify gaps and eliminate misconceptions in our knowledge of sloths and their epibionts, and to identify key questions to stimulate future research into the functions and roles of sloths within a broader ecological and evolutionary context. This review also seeks to position the sloth fur ecosystem as a model for addressing fundamental questions in metacommunity and movement ecology. The conceptual and evidence-based foundation of this review aims to serve as a guide for future hypothesis-driven research into sloths, their microbiota, sloth health and conservation, and the coevolution of symbioses in general.
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Affiliation(s)
- Maya Kaup
- Department of Biology and Center for Biodiversity and Conservation Research, University of Mississippi, University, MS, 38677-1848, U.S.A
| | - Sam Trull
- The Sloth Institute, Tulemar Gardens, Provincia de Puntarenas, Manuel Antonio, 60601, Costa Rica
| | - Erik F Y Hom
- Department of Biology and Center for Biodiversity and Conservation Research, University of Mississippi, University, MS, 38677-1848, U.S.A
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21
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Genetic, Genomics, and Responses to Stresses in Cyanobacteria: Biotechnological Implications. Genes (Basel) 2021; 12:genes12040500. [PMID: 33805386 PMCID: PMC8066212 DOI: 10.3390/genes12040500] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/25/2021] [Accepted: 03/25/2021] [Indexed: 02/07/2023] Open
Abstract
Cyanobacteria are widely-diverse, environmentally crucial photosynthetic prokaryotes of great interests for basic and applied science. Work to date has focused mostly on the three non-nitrogen fixing unicellular species Synechocystis PCC 6803, Synechococcus PCC 7942, and Synechococcus PCC 7002, which have been selected for their genetic and physiological interests summarized in this review. Extensive "omics" data sets have been generated, and genome-scale models (GSM) have been developed for the rational engineering of these cyanobacteria for biotechnological purposes. We presently discuss what should be done to improve our understanding of the genotype-phenotype relationships of these models and generate robust and predictive models of their metabolism. Furthermore, we also emphasize that because Synechocystis PCC 6803, Synechococcus PCC 7942, and Synechococcus PCC 7002 represent only a limited part of the wide biodiversity of cyanobacteria, other species distantly related to these three models, should be studied. Finally, we highlight the need to strengthen the communication between academic researchers, who know well cyanobacteria and can engineer them for biotechnological purposes, but have a limited access to large photobioreactors, and industrial partners who attempt to use natural or engineered cyanobacteria to produce interesting chemicals at reasonable costs, but may lack knowledge on cyanobacterial physiology and metabolism.
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Nalbantoglu S, Karadag A. Metabolomics bridging proteomics along metabolites/oncometabolites and protein modifications: Paving the way toward integrative multiomics. J Pharm Biomed Anal 2021; 199:114031. [PMID: 33857836 DOI: 10.1016/j.jpba.2021.114031] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 03/02/2021] [Accepted: 03/16/2021] [Indexed: 02/08/2023]
Abstract
Systems biology adopted functional and integrative multiomics approaches enable to discover the whole set of interacting regulatory components such as genes, transcripts, proteins, metabolites, and metabolite dependent protein modifications. This interactome build up the midpoint of protein-protein/PTM, protein-DNA/RNA, and protein-metabolite network in a cell. As the key drivers in cellular metabolism, metabolites are precursors and regulators of protein post-translational modifications [PTMs] that affect protein diversity and functionality. The precisely orchestrated core pattern of metabolic networks refer to paradigm 'metabolites regulate PTMs, PTMs regulate enzymes, and enzymes modulate metabolites' through a multitude of feedback and feed-forward pathway loops. The concept represents a flawless PTM-metabolite-enzyme(protein) regulomics underlined in reprogramming cancer metabolism. Immense interconnectivity of those biomolecules in their spectacular network of intertwined metabolic pathways makes integrated proteomics and metabolomics an excellent opportunity, and the central component of integrative multiomics framework. It will therefore be of significant interest to integrate global proteome and PTM-based proteomics with metabolomics to achieve disease related altered levels of those molecules. Thereby, present update aims to highlight role and analysis of interacting metabolites/oncometabolites, and metabolite-regulated PTMs loop which may function as translational monitoring biomarkers along the reprogramming continuum of oncometabolism.
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Affiliation(s)
- Sinem Nalbantoglu
- TUBITAK Marmara Research Center, Gene Engineering and Biotechnology Institute, Molecular, Oncology Laboratory, Gebze, Kocaeli, Turkey.
| | - Abdullah Karadag
- TUBITAK Marmara Research Center, Gene Engineering and Biotechnology Institute, Molecular, Oncology Laboratory, Gebze, Kocaeli, Turkey
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Martelli F, Cirlini M, Lazzi C, Neviani E, Bernini V. Solid-State Fermentation of Arthrospira platensis to Implement New Food Products: Evaluation of Stabilization Treatments and Bacterial Growth on the Volatile Fraction. Foods 2020; 10:E67. [PMID: 33396844 PMCID: PMC7823266 DOI: 10.3390/foods10010067] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 12/24/2020] [Accepted: 12/27/2020] [Indexed: 12/17/2022] Open
Abstract
Arthrospira platensis is a cyanobacterium widely used in food formulation and mainly consumed as a food supplement because of its high amount of proteins, vitamins and minerals. Different probiotic food supplements are present in the market, and a lactic acid fermented food product like dried spirulina could be useful not only to introduce lactic acid bacteria (LAB) with beneficial effects to the diet of consumers, but also to improve or change the aromatic profile of the substrate. Therefore, the aim of this study was the evaluation of lactic acid fermentation of A. platensis biomass, focusing on the consequent changes in the aromatic profile. For this purpose, two different stabilization treatments (UV light treatment and sterilization) were applied prior to fermentation with two LAB strains, Lacticaseibacillus casei 2240 and Lacticaseibacillus rhamnosus GG. The biomass proved to be a suitable matrix for solid-state fermentation, showing a LAB growth of more than 2 log CFU/g in 48 h. The fermentation process was also useful for off-flavor reduction. In particular, the fermentation process significantly influenced the concentration of those compounds responsible for aldehydic/ethereal, buttery/waxy (acetoin and diacetyl), alkane and fermented aromatic notes (isoamyl alcohol). The heat treatment of the matrix, in addition to guaranteed safety for consumers, led to an improved aroma after fermentation. In conclusion, a fermented spirulina powder with a different aromatic profile was obtained with the applied heat treatment. Fermentation with lactic acid bacteria can be an interesting tool to obtain cyanobacterial biomasses with more pleasant sensory properties for potential use in food formulations.
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Affiliation(s)
| | - Martina Cirlini
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 49/A, 43124 Parma, Italy; (F.M.); (C.L.); (E.N.); (V.B.)
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24
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Searching for Appropriate Storage Conditions for Short-Term Wet Preservation of Porphyridium purpureum. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10238315] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
It is often impossible in practice to process micro-algae immediately after their cultivation and harvest. This study, therefore, aimed to identify appropriate storage conditions for the wet preservation of Porphyridium purpureum. Algae were stored either as a concentrate or as a dilute culture at 4 °C, 8 °C, or 20 °C for 14 days and their quality was monitored. Concentrate storage tended to result in higher microbial numbers than dilute culture storage and clearly led to higher concentrations of malodorous organic acids. Butyric and isovaleric acid concentrations were about two orders of magnitude larger than their odor threshold values after 14 days of concentrate storage at 20 °C. Average B-phycoeryhrin (B-PE) levels were slightly higher after concentrate storage (2.5 ± 0.2 g B-PE/100 g organic matter) than after dilute culture storage (2.2 ± 0.5 g B-PE/100 g organic matter), probably due to respiration losses of other organic compounds in the first case. Significant amounts of organic matter got lost during concentrate storage (4–35%) as a result of carbohydrate degradation. The main restriction of concentrate storage was the rapid viscosity increase and formation of a weak gel structure complicating the later processing of the concentrates. These findings are highly relevant for P. purpureum cultivators and processors who have to store Porphyridium suspensions, even on a term of one day or less.
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Mayer KJ, Sauer JS, Dinasquet J, Prather KA. CAICE Studies: Insights from a Decade of Ocean-Atmosphere Experiments in the Laboratory. Acc Chem Res 2020; 53:2510-2520. [PMID: 33086794 DOI: 10.1021/acs.accounts.0c00504] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ocean-atmosphere interactions control the composition of the atmosphere, hydrological cycle, and temperature of our planet and affect human and ecosystem health. Our understanding of the impact of ocean emissions on atmospheric chemistry and climate is limited relative to terrestrial systems, despite the fact that oceans cover the majority (71%) of the Earth. As a result, the impact of marine aerosols on clouds represents one of the largest uncertainties in our understanding of climate, which is limiting our ability to accurately predict the future temperatures of our planet. The emission of gases and particles from the ocean surface constitutes an important chemical link between the ocean and atmosphere and is mediated by marine biological, physical, and chemical processes. It is challenging to isolate the role of biological ocean processes on atmospheric chemistry in the real world, which contains a mixture of terrestrial and anthropogenic emissions. One decade ago, the NSF Center for Aerosol Impacts on Chemistry of the Environment (CAICE) took a unique ocean-in-the-laboratory approach to study the factors controlling the chemical composition of marine aerosols and their effects on clouds and climate. CAICE studies have demonstrated that the complex interplay of phytoplankton, bacteria, and viruses exerts significant control over sea spray aerosol composition and the production of volatile organic compounds. In addition, CAICE experiments have explored the physical production mechanisms and their impact on the properties of marine cloud condensation nuclei and ice nucleating particles, thus shedding light on connections between the oceans and cloud formation. As these ocean-in-the-laboratory experiments become more sophisticated, they allow for further exploration of the complexity of the processes that control atmospheric emissions from the ocean, as well as incorporating the effects of atmospheric aging and secondary oxidation processes. In the face of unprecedented global climate change, these results provide key insights into how our oceans and atmosphere are responding to human-induced changes to our planet.This Account presents results from a decade of research by chemists in the NSF Center for Aerosol Impacts on Chemistry of the Environment. The mission of CAICE involves taking a multidisciplinary approach to transform the ability to accurately predict the impact of marine aerosols on our environment by bringing the full real-world chemical complexity of the ocean and atmosphere into the laboratory. Toward this end, CAICE has successfully advanced the study of the ocean-atmosphere system under controlled laboratory settings through the stepwise simulation of physical production mechanisms and incorporation of marine microorganisms, building to systems that replicate real-world chemical complexity. This powerful approach has already made substantial progress in advancing our understanding of how ocean biology and physical processes affect the composition of nascent sea spray aerosol (SSA), as well as yielded insights that help explain longstanding discrepancies in field observations in the marine environment. CAICE research is now using laboratory studies to assess how real-world complexity, such as warming temperatures, ocean acidification, wind speed, biology, and anthropogenic perturbations, impacts the evolution of sea spray aerosol properties, as well as shapes the composition of the marine atmosphere.
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Affiliation(s)
- Kathryn J. Mayer
- Department of Chemistry and Biochemistry, University of California, San Diego La Jolla, California 92093, United States
| | - Jon S. Sauer
- Department of Chemistry and Biochemistry, University of California, San Diego La Jolla, California 92093, United States
| | - Julie Dinasquet
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
| | - Kimberly A. Prather
- Department of Chemistry and Biochemistry, University of California, San Diego La Jolla, California 92093, United States
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
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Havaux M. β-Cyclocitral and derivatives: Emerging molecular signals serving multiple biological functions. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 155:35-41. [PMID: 32738580 DOI: 10.1016/j.plaphy.2020.07.032] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/15/2020] [Accepted: 07/15/2020] [Indexed: 05/16/2023]
Abstract
β-cyclocitral is a volatile short-chain apocarotenoid generated by enzymatic or non-enzymatic oxidation of the carotenoid β-carotene. β-cyclocitral has recently emerged as a new bioactive compound in various organisms ranging from plants and cyanobacteria to fungi and animals. In vascular plants, β-cyclocitral and its direct oxidation product, β-cyclocitric acid, are stress signals that accumulate under unfavorable environmental conditions such as drought or high light. Both compounds regulate nuclear gene expression through several signaling pathways, leading to stress acclimation. In cyanobacteria, β-cyclocitral functions as an inhibitor of competing microalgae and as a repellent against grazers. As a volatile compound, this apocarotenoid plays also an important role in intra-species and inter-species communication. This review summarizes recent findings on the multiple roles of β-cyclocitral and of some of its derivatives.
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Affiliation(s)
- Michel Havaux
- Aix-Marseille University, CNRS UMR7265, CEA, Institute of Biosciences and Biotechnologies of Aix-Marseille, CEA/Cadarache, F-13108, Saint-Paul-lez-Durance, France.
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Fisher CL, Lane PD, Russell M, Maddalena R, Lane TW. Low Molecular Weight Volatile Organic Compounds Indicate Grazing by the Marine Rotifer Brachionus plicatilis on the Microalgae Microchloropsis salina. Metabolites 2020; 10:E361. [PMID: 32899747 PMCID: PMC7570158 DOI: 10.3390/metabo10090361] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/30/2020] [Accepted: 09/02/2020] [Indexed: 01/05/2023] Open
Abstract
Microalgae produce specific chemicals indicative of stress and/or death. The aim of this study was to perform non-destructive monitoring of algal culture systems, in the presence and absence of grazers, to identify potential biomarkers of incipient pond crashes. Here, we report ten volatile organic compounds (VOCs) that are robustly generated by the marine alga, Microchloropsis salina, in the presence and/or absence of the marine grazer, Brachionus plicatilis. We cultured M. salina with and without B. plicatilis and collected in situ volatile headspace samples using thermal desorption tubes over the course of several days. Data from four experiments were aggregated, deconvoluted, and chromatographically aligned to determine VOCs with tentative identifications made via mass spectral library matching. VOCs generated by algae in the presence of actively grazing rotifers were confirmed via pure analytical standards to be pentane, 3-pentanone, 3-methylhexane, and 2-methylfuran. Six other VOCs were less specifically associated with grazing but were still commonly observed between the four replicate experiments. Through this work, we identified four biomarkers of rotifer grazing that indicate algal stress/death. This will aid machine learning algorithms to chemically define and diagnose algal mass production cultures and save algae cultures from imminent crash to make biofuel an alternative energy possibility.
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Affiliation(s)
- Carolyn L. Fisher
- Bioresources and Environmental Security Department, Sandia National Laboratories, P.O. Box 969, Livermore, CA 94551, USA;
| | - Pamela D. Lane
- Systems Biology Department, Sandia National Laboratories, P.O. Box 969, Livermore, CA 94551, USA;
| | - Marion Russell
- Energy Analysis and Environmental Impacts Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA; (M.R.); (R.M.)
| | - Randy Maddalena
- Energy Analysis and Environmental Impacts Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA; (M.R.); (R.M.)
| | - Todd W. Lane
- Bioresources and Environmental Security Department, Sandia National Laboratories, P.O. Box 969, Livermore, CA 94551, USA;
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Mirzayeva A, Castro R, G Barroso C, Durán-Guerrero E. Characterization and differentiation of seaweeds on the basis of their volatile composition. Food Chem 2020; 336:127725. [PMID: 32768912 DOI: 10.1016/j.foodchem.2020.127725] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 07/05/2020] [Accepted: 07/29/2020] [Indexed: 01/05/2023]
Abstract
Thirty one samples from different macroalgae species have been studied to determine the influence of several parameters such as the harvesting season, the geographical origin, the species or a pretreatment procedure on their volatile composition. A Multiple Head Space Sorptive Extraction methodology coupled to Gas Chromatography with Mass Spectrometry Detection (MHSSE-GC-MS) has been used to analyze 44 volatile compounds that can be found in the different samples. Of all the factors, the collection season proved to be the most influential, followed by origin with significantly lower volatile compounds concentrations found in the samples collected in spring and in southern Spain. A Principal Component Analysis showed that beta ionone, benzaldehyde, 6-methyl-5-hepten-2-one, together with some acids were the most strongly affected by the season, with highest values in those samples that had been collected in the autumn. On the other hand, the pretreatment (raw, salting or dehydration) proved to have a low influence.
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Affiliation(s)
- Aytan Mirzayeva
- Analytical Chemistry Department, Faculty of Sciences-IVAGRO, University of Cadiz, Agrifood Campus of International Excellence (CeiA3), Polígono Río San Pedro, s/n, Puerto Real, 11510 Cadiz, Spain
| | - Remedios Castro
- Analytical Chemistry Department, Faculty of Sciences-IVAGRO, University of Cadiz, Agrifood Campus of International Excellence (CeiA3), Polígono Río San Pedro, s/n, Puerto Real, 11510 Cadiz, Spain.
| | - Carmelo G Barroso
- Analytical Chemistry Department, Faculty of Sciences-IVAGRO, University of Cadiz, Agrifood Campus of International Excellence (CeiA3), Polígono Río San Pedro, s/n, Puerto Real, 11510 Cadiz, Spain.
| | - Enrique Durán-Guerrero
- Analytical Chemistry Department, Faculty of Sciences-IVAGRO, University of Cadiz, Agrifood Campus of International Excellence (CeiA3), Polígono Río San Pedro, s/n, Puerto Real, 11510 Cadiz, Spain.
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Isleten Hosoglu M, Karagul-Yuceer Y, Guneser O. Aroma characterization of heterotrophic microalgae Crypthecodinium cohnii using solid-phase microextraction and gas chromatography–mass spectrometry/olfactometry during different growth phases. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101928] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Evaluation of Microbial Load, Formation of Odorous Metabolites and Lipid Stability during Wet Preservation of Nannochloropsis gaditana Concentrates. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10103419] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Wet preservation of algae allows us to bridge the time period between algae harvest and processing while avoiding the costs and nutritional losses associated with algae drying. This study aimed to identify suitable storage conditions for the wet preservation of Nannochloropsis gaditana concentrates. The impact of storage temperature, time and the way of closing the storage recipient was evaluated using a full factorial design. The effect of acetic acid addition was tested for one storage condition. Storage temperature was the main factor determining the microbial count and had a vast impact on the formation of odorous metabolites. Storage at 20 °C in closed recipients led to rapid O2 consumption, accumulation of malodorous short-chain fatty acids above their odor thresholds, and the production of H2S and methanethiol. These odorous metabolites were not formed or to a much lower extent during 4 °C and 8 °C storage in closed recipients. Acetic acid supplementation (50 mM) suppressed the formation of short-chain fatty acids during 8 °C storage in unsealed recipients and reduced the aerobic microbial count and the number of yeasts and molds by approximately one log unit after 14 days. Yet, acetic acid addition also induced lipid hydrolysis and decreased chlorophyll levels when algae were stored for more than one week. This study demonstrated that temperature control is needed and that acetic acid addition is a promising approach when N. gaditana concentrates are stored for less than one week.
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31
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Fabris M, George J, Kuzhiumparambil U, Lawson CA, Jaramillo-Madrid AC, Abbriano RM, Vickers CE, Ralph P. Extrachromosomal Genetic Engineering of the Marine Diatom Phaeodactylum tricornutum Enables the Heterologous Production of Monoterpenoids. ACS Synth Biol 2020; 9:598-612. [PMID: 32032487 DOI: 10.1021/acssynbio.9b00455] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Geraniol is a commercially relevant plant-derived monoterpenoid that is a main component of rose essential oil and used as insect repellent. Geraniol is also a key intermediate compound in the biosynthesis of the monoterpenoid indole alkaloids (MIAs), a group of over 2000 compounds that include high-value pharmaceuticals. As plants naturally produce extremely small amounts of these molecules and their chemical synthesis is complex, industrially sourcing these compounds is costly and inefficient. Hence, microbial hosts suitable to produce MIA precursors through synthetic biology and metabolic engineering are currently being sought. Here, we evaluated the suitability of a eukaryotic microalga, the marine diatom Phaeodactylum tricornutum, for the heterologous production of monoterpenoids. Profiling of endogenous metabolism revealed that P. tricornutum, unlike other microbes employed for industrial production of terpenoids, accumulates free pools of the precursor geranyl diphosphate. To evaluate the potential for larger synthetic biology applications, we engineered P. tricornutum through extrachromosomal, episome-based expression, for the heterologous biosynthesis of the MIA intermediate geraniol. By profiling the production of geraniol resulting from various genetic and cultivation arrangements, P. tricornutum reached the maximum geraniol titer of 0.309 mg/L in phototrophic conditions. This work provides (i) a detailed analysis of P. tricornutum endogenous terpenoid metabolism, (ii) a successful demonstration of extrachromosomal expression for metabolic pathway engineering with potential gene-stacking applications, and (iii) a convincing proof-of-concept of the suitability of P. tricornutum as a novel production platform for heterologous monoterpenoids, with potential for complex pathway engineering aimed at the heterologous production of MIAs.
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Affiliation(s)
- Michele Fabris
- Climate Change Cluster, University of Technology, 15 Broadway, Ultimo, NSW 2007, Australia
- CSIRO Synthetic Biology Future Science Platform, GPO Box 2583, Brisbane, QLD 4001, Australia
| | - Jestin George
- Climate Change Cluster, University of Technology, 15 Broadway, Ultimo, NSW 2007, Australia
| | | | - Caitlin A. Lawson
- Climate Change Cluster, University of Technology, 15 Broadway, Ultimo, NSW 2007, Australia
| | | | - Raffaela M. Abbriano
- Climate Change Cluster, University of Technology, 15 Broadway, Ultimo, NSW 2007, Australia
| | - Claudia E. Vickers
- CSIRO Synthetic Biology Future Science Platform, GPO Box 2583, Brisbane, QLD 4001, Australia
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Peter Ralph
- Climate Change Cluster, University of Technology, 15 Broadway, Ultimo, NSW 2007, Australia
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Abirama V, Mohamed RMSR, Al-Gheethi A, Abdul Malek M, Kassim AHM. Meat processing wastewater Phycoremediation by Botryococcus sp.: a biokinetic study and a techno-economic analysis. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2020.1718708] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Vikneswara Abirama
- Micro-pollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil and Environmental Engineering, UTHM, Parit Raja, Malaysia
| | - Radin Maya Saphira Radin Mohamed
- Micro-pollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil and Environmental Engineering, UTHM, Parit Raja, Malaysia
| | - Adel Al-Gheethi
- Micro-pollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil and Environmental Engineering, UTHM, Parit Raja, Malaysia
| | - Marlinda Abdul Malek
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Selangor, Malaysia
| | - Amir Hashim Mohd Kassim
- Micro-pollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil and Environmental Engineering, UTHM, Parit Raja, Malaysia
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Chemical Profiling of Volatile Organic Compounds in the Headspace of Algal Cultures as Early Biomarkers of Algal Pond Crashes. Sci Rep 2019; 9:13866. [PMID: 31554867 PMCID: PMC6761164 DOI: 10.1038/s41598-019-50125-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/04/2019] [Indexed: 11/08/2022] Open
Abstract
Algae ponds used in industrial biomass production are susceptible to pathogen or grazer infestation, resulting in pond crashes with high economic costs. Current methods to monitor and mitigate unhealthy ponds are hindered by a lack of early indicators that precede culture crash. We used solid-phase microextraction (SPME) coupled with gas chromatography-mass spectrometry (GC-MS) to identify volatiles emitted from healthy and rotifer infested cultures of Microchloropsis salina. After 48 hours of algal growth, marine rotifers, Brachionus plicatilis, were added to the algae cultures and volatile organic compounds (VOC) were sampled from the headspace using SPME fibers. A GC-MS approach was used in an untargeted analysis of VOCs, followed by preliminary identification. The addition of B. plicatilis to healthy cultures of M. salina resulted in decreased algal cell numbers, relative to uninfected controls, and generated trans-β-ionone and β-cyclocitral, which were attributed to carotenoid degradation. The abundances of the carotenoid-derived VOCs increased with rotifer consumption of algae. Our results indicate that specific VOCs released by infected algae cultures may be early indicators for impending pond crashes, providing a useful tool to monitor algal biomass production and pond crash prevention.
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Gheysen L, Demets R, Devaere J, Bernaerts T, Goos P, Van Loey A, De Cooman L, Foubert I. Impact of microalgal species on the oxidative stability of n-3 LC-PUFA enriched tomato puree. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101502] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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35
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Gheysen L, Lagae N, Devaere J, Goiris K, Goos P, Bernaerts T, Van Loey A, De Cooman L, Foubert I. Impact of Nannochloropsis sp. dosage form on the oxidative stability of n-3 LC-PUFA enriched tomato purees. Food Chem 2019; 279:389-400. [DOI: 10.1016/j.foodchem.2018.12.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 12/06/2018] [Accepted: 12/10/2018] [Indexed: 11/29/2022]
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36
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Yu YJ, Li CY, Shen W, Wang Z, Xu PQ, Yu HX. Volatile compounds released by microalgae-water phase from Taihu Lake in China. HARMFUL ALGAE 2019; 84:56-63. [PMID: 31128813 DOI: 10.1016/j.hal.2019.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 12/26/2018] [Accepted: 01/25/2019] [Indexed: 06/09/2023]
Abstract
The spectrum of Volatile Organic Compounds (VOCs) released by the microalgae-water phase of Taihu Lake in China was examined, then release behaviors were studied using non-methane hydrocarbons (NMHC, including a few polar organics) to describe the total amount of the released VOCs. Coupled dynamic headspace sampling with on-line monitoring of methane and NMHC was used to reflect the quasi-realtime release behavior of methane and NMHC by the microalgae-water phase. Alkanes, alkenes, oxygenated VOCs (OVOCs) and volatile sulfide chemicals (VOSCs) were detected. Their relative contents over time varied markedly from the stationary to the apoptosis phase, with their release rates as described by NMHC estimated from 0.02 to 0.59 μgC/(h g). Methane was investigated simultaneously, and its release rate was found to be 0.05-3.96 μgC/(h g). The release rates of both NMHC and methane were found to relate to the culture phase of the microalgae.
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Affiliation(s)
- Yi-Jun Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; Jiangsu Environmental Protection Key Laboratory of Aquatic Biomonitoring, Changzhou Environmental Monitoring Center, Changzhou, Jiangsu 213001, China
| | - Chun-Yu Li
- Jiangsu Environmental Protection Key Laboratory of Aquatic Biomonitoring, Changzhou Environmental Monitoring Center, Changzhou, Jiangsu 213001, China
| | - Wei Shen
- Jiangsu Environmental Protection Key Laboratory of Aquatic Biomonitoring, Changzhou Environmental Monitoring Center, Changzhou, Jiangsu 213001, China
| | - Zhen Wang
- Jiangsu Environmental Protection Key Laboratory of Aquatic Biomonitoring, Changzhou Environmental Monitoring Center, Changzhou, Jiangsu 213001, China
| | - Pu-Qing Xu
- Changzhou Research Academy of Environmental Sciences, Changzhou, Jiangsu 213022, China
| | - Hong-Xia Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China.
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Berlinck RGS, Monteiro AF, Bertonha AF, Bernardi DI, Gubiani JR, Slivinski J, Michaliski LF, Tonon LAC, Venancio VA, Freire VF. Approaches for the isolation and identification of hydrophilic, light-sensitive, volatile and minor natural products. Nat Prod Rep 2019; 36:981-1004. [DOI: 10.1039/c9np00009g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Water-soluble, volatile, minor and photosensitive natural products are yet poorly known, and this review discusses the literature reporting the isolation strategies for some of these metabolites.
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Affiliation(s)
| | - Afif F. Monteiro
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Ariane F. Bertonha
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Darlon I. Bernardi
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Juliana R. Gubiani
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Juliano Slivinski
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | | | | | - Victor A. Venancio
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Vitor F. Freire
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
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38
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Jerković I, Marijanović Z, Roje M, Kuś PM, Jokić S, Čož-Rakovac R. Phytochemical study of the headspace volatile organic compounds of fresh algae and seagrass from the Adriatic Sea (single point collection). PLoS One 2018; 13:e0196462. [PMID: 29738535 PMCID: PMC5940206 DOI: 10.1371/journal.pone.0196462] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 04/13/2018] [Indexed: 11/18/2022] Open
Abstract
Performed phytochemical study contributes to the knowledge of volatile organic compounds (VOCs) of Halopteris filicina (Grateloup) Kützing, Dictyota dichotoma (Hudson) J. V. Lamouroux, Posidonia oceanica (L.) Delile and Flabellia petiolata (Turra) Nizamuddin from the Adriatic Sea (single point collection). VOCs were investigated by headspace solid-phase microextraction (HS-SPME) and analysed by gas chromatography and mass spectrometry (GC-MS/FID). H. filicina headspace contained dimethyl sulfide (DMS; 12.8%), C8-compounds (e.g. fucoserratene (I; 9.5%)), benzaldehyde (II; 8.7%), alkane C17, dictyopterene D and C (III, IV), tribromomethane (V), 1-iodopentane, others. F. petiolata headspace was characterized by DMS (22.2%), 6-methylhept-5-en-2-one (9.5%), C17 (9.1%), II (6.5%), compounds I-V. DMS (59.3%), C15 (14.5%), C17 (7.2%) and C19 (6.3%) dominated in P. oceanica headspace. Sesquiterpenes were found in D. dichotoma, predominantly germacrene D (28.3%) followed by other cadinenyl (abundant), muurolenyl and amorphenyl structures. Determined VOCs may be significant for chemosystematics and chemical communications in marine ecosystem.
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Affiliation(s)
- Igor Jerković
- Department of Organic Chemistry, Faculty of Chemistry and Technology, University of Split, HR Split, Croatia
| | - Zvonimir Marijanović
- Department of Food Technology and Biotechnology, Faculty of Chemistry and Technology, University of Split, HR Split, Croatia
| | - Marin Roje
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, HR Zagreb, Croatia
| | - Piotr M. Kuś
- Department of Pharmacognosy, Wrocław Medical University, Wrocław, Poland
| | - Stela Jokić
- Department of Process Engineering, Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, HR Osijek, Croatia
| | - Rozelinda Čož-Rakovac
- Laboratory for Aquaculture Biotechnology, Ruđer Bošković Institute, HR Zagreb, Croatia
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39
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Steinke M, Randell L, Dumbrell AJ, Saha M. Volatile Biomarkers for Aquatic Ecological Research. ADV ECOL RES 2018. [DOI: 10.1016/bs.aecr.2018.09.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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