1
|
Mix T, Janneschütz J, Ludwig R, Eichbaum J, Fischer M, Hackl T. From Nontargeted to Targeted Analysis: Feature Selection in the Differentiation of Truffle Species ( Tuber spp.) Using 1H NMR Spectroscopy and Support Vector Machine. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18074-18084. [PMID: 37934755 DOI: 10.1021/acs.jafc.3c05786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
The price of different truffle types varies according to their culinary value, sometimes by more than a factor of 10. Nonprofessionals can hardly distinguish visually the species within the white or black truffles, making the possibility of food fraud very easy. Therefore, the identification of different truffle species (Tuber spp.) is an analytical task that could be solved in this study. The polar extract from a total of 80 truffle samples was analyzed by 1H NMR spectroscopy in combination with chemometric methods covering five commercially relevant species. All classification models were validated applying a repeated nested cross-validation. In direct comparison, the two very similar looking and closely related black representatives Tuber melanosporum and Tuber indicum could be classified 100% correctly. The most expensive truffle Tuber magnatum could be distinguished 100% from the other relevant white truffle Tuber borchii. In addition, signals for a potential Tuber borchii and a potential Tuber melanosporum marker for targeted approaches could be detected, and the corresponding molecules were identified as betaine and ribonate. A model covering all five truffle species Tuber aestivum, Tuber borchii, Tuber indicum, Tuber magnatum, and Tuber melanosporum was able to correctly discriminate between each of the species.
Collapse
Affiliation(s)
- Thorsten Mix
- Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Jasmin Janneschütz
- Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, Vienna 1090, Austria
| | - Rami Ludwig
- Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Julia Eichbaum
- Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Markus Fischer
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
| | - Thomas Hackl
- Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
| |
Collapse
|
2
|
Chemical Composition, Biomolecular Analysis, and Nuclear Magnetic Resonance Spectroscopic Fingerprinting of Posidonia oceanica and Ascophyllum nodosum Extracts. Metabolites 2023; 13:metabo13020170. [PMID: 36837789 PMCID: PMC9963245 DOI: 10.3390/metabo13020170] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/17/2023] [Accepted: 01/19/2023] [Indexed: 01/27/2023] Open
Abstract
A detailed analysis of the elemental and molecular composition of Posidonia oceanica (PO) and Ascophyllum nodosum (AN) is presented. In particular, an in-depth study of the molecular identification via NMR spectroscopy of aqueous and organic extracts of PO and AN was carried out, exploiting 2D COSY and pseudo-2D DOSY data to aid in the assignment of peaks in complex 1D proton NMR spectra. Many metabolites were identified, such as carbohydrates, amino acids, organic acids, fatty acids, and polyphenols, with NMR complementing the characterization of the two species by standard elemental analysis, HPLC analysis, and colorimetric testing. For PO, different parts of the live plant (roots, rhizomes, and leaves) were analysed, as well as the residues of the dead plant which typically deposit along the coasts. The combination of the various studies made it possible to recognize bioactive compounds naturally present in the two plant species and, in particular, in the PO residues, opening the door for their possible recycling and use in, for example, fertilizer. Furthermore, NMR is proven to be a powerful tool for the metabolomic study of plant species as it allows for the direct identification of specific biomarkers as well as providing a molecular fingerprint of the plant variety.
Collapse
|
3
|
Çayan F, Tel‐Çayan G, Deveci E, Duru ME, Türk M. A detailed study on multifaceted bioactivities of the extracts and isolated compounds from truffle
Reddellomyces
parvulosporus. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Fatih Çayan
- Department of Chemistry and Chemical Processing Technologies Muğla Vocational School Muğla Sıtkı Koçman University Muğla 48000 Turkey
| | - Gülsen Tel‐Çayan
- Department of Chemistry and Chemical Processing Technologies Muğla Vocational School Muğla Sıtkı Koçman University Muğla 48000 Turkey
| | - Ebru Deveci
- Chemistry and Chemical Processing Technology Department Technical Sciences Vocational School Konya Technical University Konya 42250 Turkey
| | - Mehmet Emin Duru
- Department of Chemistry Faculty of Sciences Muğla Sıtkı Koçman University Muğla 48000 Turkey
| | - Mustafa Türk
- Department of Bioengineering Faculty of Engineering and Architecture Kırıkkale University Kırıkkale 71450 Turkey
| |
Collapse
|
4
|
Krauß S, Vetter W. Geographical and Species Differentiation of Truffles ( Tuber spp.) by Means of Stable Isotope Ratio Analysis of Light Elements (H, C, and N). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:14386-14392. [PMID: 32378890 DOI: 10.1021/acs.jafc.0c01051] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Truffles (Tuber spp.) are considered the most expensive edible fungi and, therefore, are highly prone to food fraud. In this study, authentic truffles from different countries of origin and species were characterized by the determination of their stable carbon, nitrogen, and hydrogen isotope ratios (bulk δ2H, δ13C, and δ15N values). Chinese truffles from Yunnan or related provinces (n = 19) could be well-separated from all European samples (eight countries; n = 105) by means of their significantly (p < 0.05) more negative δ2H values. Furthermore, samples of the second most expensive European species Tuber magnatum were both more enriched in 15N and more depleted in 13C compared to the remaining samples, which allowed for an unequivocal differentiation. Hence, stable isotope ratio analysis could be of high value in terms of authentication of truffles.
Collapse
Affiliation(s)
- Stephanie Krauß
- Institute of Food Chemistry (170b), University of Hohenheim, Garbenstraße 28, D-70599 Stuttgart, Germany
| | - Walter Vetter
- Institute of Food Chemistry (170b), University of Hohenheim, Garbenstraße 28, D-70599 Stuttgart, Germany
| |
Collapse
|
5
|
Shah NN, Hokkanen S, Pastinen O, Eljamil A, Shamekh S. A study on the fatty acid composition of lipids in truffles selected from Europe and Africa. 3 Biotech 2020; 10:415. [PMID: 32953378 DOI: 10.1007/s13205-020-02414-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/26/2020] [Indexed: 11/24/2022] Open
Abstract
The gas chromatography of hexane extracts from ascocarps of Tuber maculatum (mostly the first report), T. aestivum/unicantum, T. borchii, T. melanosporum and Tirmania nivea dominantly showed palmitic, stearic, oleic and linoleic acids followed by traces of polyunsaturated fatty acids. The fatty acid content varied from ca. 8-61 mg g- 1, dry-weight-basis with species with highest for T. maculatum. Polyunsaturated fatty acids contributions varied from ca. 42-59%. The dominant fatty acid varied with the species. A comparison with existing reports on same species cultivated in different regions showed differences in contributions by saturated, monounsaturated and polyunsaturated fatty acids as well as dominant fatty acids detected. Lesser explored species such as T. borchii, T. maculatum call for further research. This is a preliminary study that indicates fatty acid composition as a potential tool for distinction like aroma between truffle species and geographies of cultivation. This forms the basis for further studies in different species and regions.
Collapse
Affiliation(s)
- Nirali N Shah
- Department of Food Engineering and Technology, Institute of Chemical Technology, Mumbai, India
| | - Sanna Hokkanen
- Department of Biotechnology and Chemical Technology, School of Chemical Technology, Aalto University, Aalto, Finland
| | - Ossi Pastinen
- Department of Biotechnology and Chemical Technology, School of Chemical Technology, Aalto University, Aalto, Finland
| | | | | |
Collapse
|
6
|
Caboni P, Scano P, Sanchez S, Garcia-Barreda S, Corrias F, Marco P. Multi-platform metabolomic approach to discriminate ripening markers of black truffles (Tuber melanosporum). Food Chem 2020; 319:126573. [PMID: 32169760 DOI: 10.1016/j.foodchem.2020.126573] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 03/04/2020] [Accepted: 03/05/2020] [Indexed: 11/16/2022]
Abstract
Black truffle is characterized by a black ascocarp and white veins. This hypogeous fruit body is known for its aroma. Understanding metabolic variation during ripening can shed light on truffle biology. In this work, the comprehensive polar metabolome and the volatile organic compounds of T. melanosporum were studied at different ripening stages by means of a metabolomic approach using GC-MS. Multivariate statistical data analysis indicated that the metabolic profile changed during ripening and that the metabolites that mostly discriminated truffles in the early ripening stages belonged to the classes of carbohydrates, while free fatty acids and amino acids, among which precursors of VOCs, characterized the late stages of ripening. Principal component analysis of the volatilome indicated that dimethylsulfide and dimethyldisulfide characterized most of the samples collected in December-January, while 1-octen-3-ol samples collected in February-March.
Collapse
Affiliation(s)
- Pierluigi Caboni
- Department of Life and Environmental Sciences, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy.
| | - Paola Scano
- Department of Life and Environmental Sciences, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy
| | - Sergio Sanchez
- Forest Resources Department, Agrifood Research and Technology Centre of Aragon (CITA), Agrifood Institute of Aragón-IA2 (CITA-Zaragoza University), Av. Montañana 930, 50059 Zaragoza, Spain
| | - Sergi Garcia-Barreda
- Forest Resources Department, Agrifood Research and Technology Centre of Aragon (CITA), Agrifood Institute of Aragón-IA2 (CITA-Zaragoza University), Av. Montañana 930, 50059 Zaragoza, Spain
| | - Francesco Corrias
- Department of Life and Environmental Sciences, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy
| | - Pedro Marco
- Forest Resources Department, Agrifood Research and Technology Centre of Aragon (CITA), Agrifood Institute of Aragón-IA2 (CITA-Zaragoza University), Av. Montañana 930, 50059 Zaragoza, Spain
| |
Collapse
|
7
|
Feng T, Shui M, Song S, Zhuang H, Sun M, Yao L. Characterization of the Key Aroma Compounds in Three Truffle Varieties from China by Flavoromics Approach. Molecules 2019; 24:molecules24183305. [PMID: 31514370 PMCID: PMC6767217 DOI: 10.3390/molecules24183305] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/02/2019] [Accepted: 09/06/2019] [Indexed: 11/16/2022] Open
Abstract
The volatile compounds of three different fresh-picked truffle varieties (Tuber sinensis, T1, Tuber sinoalbidum, T2 and Tuber sinoexcavatum, T3) were extracted by headspace solid-phase microextraction (HS-SPME). Separation and identification of volatile components and sulfur compounds were investigated by gas chromatography-olfactometry (GC-O), gas chromatography-mass spectrometry (GC-MS) and gas chromatography with flame photometric detection (GC-FPD). The results showed that 44, 43 and 44 volatile compounds were detected in T1, T2 and T3 samples, respectively. In addition, 9, 10 and 9 sulfur compounds were identified in three samples by GC-FPD, respectively. Combining physicochemical and sensory properties, T1 presented fatty, green and rotten cabbage odor; T2 exhibited mushroom, sulfuric and musty odor notes; T3 had nutty, floral and roasted potato odor. Dimethyl sulfide, 3-methylbutanal, dimethyl disulfide, 3-octanone, bis(methylthio) methane, octanal, 1-octen-3-one, 1-octen-3-ol and benzeneacetaldehyde played indispensable roles in the overall aroma of three truffles. Finally, based on quantitative concentration in T1, odorous compounds (OAV) > 1 were mixed to recombine aroma, demonstrating that these key aroma compounds based on OAV can successfully recombine pretty similar aroma of each variety.
Collapse
Affiliation(s)
- Tao Feng
- School of perfume and aroma technology, Shanghai Institute of Technology, No.100 Hai Quan Road, Shanghai 201418, China.
| | - Mengzhu Shui
- School of perfume and aroma technology, Shanghai Institute of Technology, No.100 Hai Quan Road, Shanghai 201418, China.
| | - Shiqing Song
- School of perfume and aroma technology, Shanghai Institute of Technology, No.100 Hai Quan Road, Shanghai 201418, China.
| | - Haining Zhuang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, National Engineering Research Center of Edible Fungi, 1000 Jinqi Road, Shanghai 201403, China.
| | - Min Sun
- School of perfume and aroma technology, Shanghai Institute of Technology, No.100 Hai Quan Road, Shanghai 201418, China.
| | - Lingyun Yao
- School of perfume and aroma technology, Shanghai Institute of Technology, No.100 Hai Quan Road, Shanghai 201418, China.
| |
Collapse
|
8
|
Tsetegho Sokeng AJ, Sobolev AP, Di Lorenzo A, Xiao J, Mannina L, Capitani D, Daglia M. Metabolite characterization of powdered fruits and leaves from Adansonia digitata L. (baobab): A multi-methodological approach. Food Chem 2019; 272:93-108. [PMID: 30309609 DOI: 10.1016/j.foodchem.2018.08.030] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 08/02/2018] [Accepted: 08/08/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Arold Jorel Tsetegho Sokeng
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Anatoly P Sobolev
- Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica "Annalaura Segre", CNR, 00015 Monterotondo (Rome), Italy
| | - Arianna Di Lorenzo
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Jianbo Xiao
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Avenida da Universidade, Taipa, Macau, China
| | - Luisa Mannina
- Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica "Annalaura Segre", CNR, 00015 Monterotondo (Rome), Italy; Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Donatella Capitani
- Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica "Annalaura Segre", CNR, 00015 Monterotondo (Rome), Italy
| | - Maria Daglia
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| |
Collapse
|
9
|
Antonacci A, Lambreva MD, Margonelli A, Sobolev AP, Pastorelli S, Bertalan I, Johanningmeier U, Sobolev V, Samish I, Edelman M, Havurinne V, Tyystjärvi E, Giardi MT, Mattoo AK, Rea G. Photosystem-II D1 protein mutants of Chlamydomonas reinhardtii in relation to metabolic rewiring and remodelling of H-bond network at Q B site. Sci Rep 2018; 8:14745. [PMID: 30283151 PMCID: PMC6170454 DOI: 10.1038/s41598-018-33146-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 09/21/2018] [Indexed: 12/21/2022] Open
Abstract
Photosystem II (PSII) reaction centre D1 protein of oxygenic phototrophs is pivotal for sustaining photosynthesis. Also, it is targeted by herbicides and herbicide-resistant weeds harbour single amino acid substitutions in D1. Conservation of D1 primary structure is seminal in the photosynthetic performance in many diverse species. In this study, we analysed built-in and environmentally-induced (high temperature and high photon fluency – HT/HL) phenotypes of two D1 mutants of Chlamydomonas reinhardtii with Ala250Arg (A250R) and Ser264Lys (S264K) substitutions. Both mutations differentially affected efficiency of electron transport and oxygen production. In addition, targeted metabolomics revealed that the mutants undergo specific differences in primary and secondary metabolism, namely, amino acids, organic acids, pigments, NAD, xanthophylls and carotenes. Levels of lutein, β-carotene and zeaxanthin were in sync with their corresponding gene transcripts in response to HT/HL stress treatment in the parental (IL) and A250R strains. D1 structure analysis indicated that, among other effects, remodelling of H-bond network at the QB site might underpin the observed phenotypes. Thus, the D1 protein, in addition to being pivotal for efficient photosynthesis, may have a moonlighting role in rewiring of specific metabolic pathways, possibly involving retrograde signalling.
Collapse
Affiliation(s)
- Amina Antonacci
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy
| | - Maya D Lambreva
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy
| | - Andrea Margonelli
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy
| | - Anatoly P Sobolev
- Institute of Chemical Methodologies, National Research Council of Italy, Via Salaria km 29,3 00015, Monterotondo Stazione, Rome, Italy
| | - Sandro Pastorelli
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy.,Neotron S.p.a., Santa Maria di Mugnano, Modena, Italy
| | - Ivo Bertalan
- Martin-Luther-University, Plant Physiology Institute, Weinbergweg 10, D-06120, Halle Saale, Germany
| | - Udo Johanningmeier
- Martin-Luther-University, Plant Physiology Institute, Weinbergweg 10, D-06120, Halle Saale, Germany
| | - Vladimir Sobolev
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Ilan Samish
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel.,Amai Proteins Ltd., 2 Bergman St., Rehovot, Israel
| | - Marvin Edelman
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Vesa Havurinne
- Department of Biochemistry/Molecular Plant Biology, FI-20014, University of Turku, Turku, Finland
| | - Esa Tyystjärvi
- Department of Biochemistry/Molecular Plant Biology, FI-20014, University of Turku, Turku, Finland
| | - Maria T Giardi
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy
| | - Autar K Mattoo
- The Henry A Wallace Beltsville Agricultural Research Centre, United States Department of Agriculture, Sustainable Agricultural Systems Laboratory, Beltsville, Maryland, 20705, USA.
| | - Giuseppina Rea
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy.
| |
Collapse
|
10
|
Ori F, Trappe J, Leonardi M, Iotti M, Pacioni G. Crested porcupines (Hystrix cristata): mycophagist spore dispersers of the ectomycorrhizal truffle Tuber aestivum. MYCORRHIZA 2018; 28:561-565. [PMID: 29869187 DOI: 10.1007/s00572-018-0840-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 05/28/2018] [Indexed: 06/08/2023]
Abstract
Truffles, as hypogeous, ectomycorrhizal fungi, have no means to actively discharge spores into the environment and thus depend on mycophagists for spore dispersal. After consumption of fruiting bodies by animals and passage through the digestive tract, the spores are released in faecal pellets. Recently, in the Abruzzo region (Italy), Hystrix cristata has been spotted inside private truffières, but its role in spore dispersal has never been investigated. Here, we report our research on the occurrence of Tuber aestivum spores in porcupine's faecal contents in a truffière in L'Aquila, Italy, where a H. cristata specimen was photographed. The spores were isolated from faeces by using a suspension of 0.7 M ZnSO4. We also verified degradation and disfiguration of the digested spores' reticular ornamentation compared to that of fresh spores from ascomata collected inside the truffière, through measurements performed by scanning electron microscopy. A few truffle spores had germinated within the faeces.
Collapse
Affiliation(s)
- Francesca Ori
- Department of Life, Health and Environmental Sciences, University of L'Aquila, 67100, L'Aquila, Italy
| | - James Trappe
- Department of Forest Ecosystems and Society and USDA Forest Service, Pacific Northwest Research Station, Forestry Sciences Laboratory, Oregon State University, Corvallis, OR, 97331, USA
| | - Marco Leonardi
- Department of Life, Health and Environmental Sciences, University of L'Aquila, 67100, L'Aquila, Italy.
| | - Mirco Iotti
- Department of Life, Health and Environmental Sciences, University of L'Aquila, 67100, L'Aquila, Italy
| | - Giovanni Pacioni
- Department of Life, Health and Environmental Sciences, University of L'Aquila, 67100, L'Aquila, Italy
| |
Collapse
|
11
|
Iebba V, Guerrieri F, Di Gregorio V, Levrero M, Gagliardi A, Santangelo F, Sobolev AP, Circi S, Giannelli V, Mannina L, Schippa S, Merli M. Combining amplicon sequencing and metabolomics in cirrhotic patients highlights distinctive microbiota features involved in bacterial translocation, systemic inflammation and hepatic encephalopathy. Sci Rep 2018; 8:8210. [PMID: 29844325 PMCID: PMC5974022 DOI: 10.1038/s41598-018-26509-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 05/09/2018] [Indexed: 12/13/2022] Open
Abstract
In liver cirrhosis (LC), impaired intestinal functions lead to dysbiosis and possible bacterial translocation (BT). Bacteria or their byproducts within the bloodstream can thus play a role in systemic inflammation and hepatic encephalopathy (HE). We combined 16S sequencing, NMR metabolomics and network analysis to describe the interrelationships of members of the microbiota in LC biopsies, faeces, peripheral/portal blood and faecal metabolites with clinical parameters. LC faeces and biopsies showed marked dysbiosis with a heightened proportion of Enterobacteriaceae. Our approach showed impaired faecal bacterial metabolism of short-chain fatty acids (SCFAs) and carbon/methane sources in LC, along with an enhanced stress-related response. Sixteen species, mainly belonging to the Proteobacteria phylum, were shared between LC peripheral and portal blood and were functionally linked to iron metabolism. Faecal Enterobacteriaceae and trimethylamine were positively correlated with blood proinflammatory cytokines, while Ruminococcaceae and SCFAs played a protective role. Within the peripheral blood and faeces, certain species (Stenotrophomonas pavanii, Methylobacterium extorquens) and metabolites (methanol, threonine) were positively related to HE. Cirrhotic patients thus harbour a 'functional dysbiosis' in the faeces and peripheral/portal blood, with specific keystone species and metabolites related to clinical markers of systemic inflammation and HE.
Collapse
Affiliation(s)
- Valerio Iebba
- Istituto Pasteur Cenci Bolognetti Foundation, Public Health and Infectious Diseases Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Francesca Guerrieri
- Center for Life NanoScience@Sapienza, Istituto Italiano di Tecnologia, Rome, Italy
| | - Vincenza Di Gregorio
- Gastroenterology, Department of Clinical Medicine, Sapienza University of Rome, Viale dell'Università 37, 00185, Rome, Italy
| | - Massimo Levrero
- Center for Life NanoScience@Sapienza, Istituto Italiano di Tecnologia, Rome, Italy
- INSERM, U1052, Cancer Research Center of Lyon (CRCL), Université de Lyon (UCBL1), Centre Léon Bérard, Lyon, France
| | - Antonella Gagliardi
- Public Health and Infectious Diseases Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Floriana Santangelo
- Public Health and Infectious Diseases Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Anatoly P Sobolev
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, I-00185, Rome, Italy
- Magnetic Resonance Laboratory "Annalaura Segre", Institute of Chemical Methodologies, CNR, via Salaria km 29.300, 00015, Monterotondo, (RM), Italy
| | - Simone Circi
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, I-00185, Rome, Italy
| | - Valerio Giannelli
- Gastroenterology, Department of Clinical Medicine, Sapienza University of Rome, Viale dell'Università 37, 00185, Rome, Italy
| | - Luisa Mannina
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, I-00185, Rome, Italy
- Magnetic Resonance Laboratory "Annalaura Segre", Institute of Chemical Methodologies, CNR, via Salaria km 29.300, 00015, Monterotondo, (RM), Italy
| | - Serena Schippa
- Public Health and Infectious Diseases Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Manuela Merli
- Gastroenterology, Department of Clinical Medicine, Sapienza University of Rome, Viale dell'Università 37, 00185, Rome, Italy.
| |
Collapse
|
12
|
Iaffaldano N, Di Iorio M, Mannina L, Paventi G, Rosato MP, Cerolini S, Sobolev AP. Age-dependent changes in metabolic profile of turkey spermatozoa as assessed by NMR analysis. PLoS One 2018; 13:e0194219. [PMID: 29534088 PMCID: PMC5849324 DOI: 10.1371/journal.pone.0194219] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 02/27/2018] [Indexed: 11/18/2022] Open
Abstract
Metabolic profile of fresh turkey spermatozoa at three different reproductive period ages, namely 32, 44 and 56 weeks, was monitored by Nuclear Magnetic Resonance (NMR) spectroscopy and correlated to sperm quality parameters. The age-related decrease in sperm quality as indicated by reduction of sperm concentration, sperm mobility and osmotic tolerance was associated to variation in the level of specific water-soluble and liposoluble metabolites. In particular, the highest levels of isoleucine, phenylalanine, leucine, tyrosine and valine were found at 32 weeks of age, whereas aspartate, lactate, creatine, carnitine, acetylcarnitine levels increased during the ageing. Lipid composition also changed during the ageing: diunsaturated fatty acids level increased from 32 to 56 weeks of age, whereas a reduction of polyunsaturated fatty acids content was observed at 56 weeks. The untargeted approach attempts to give a wider picture of metabolic changes occurring in ageing suggesting that the reduction of sperm quality could be due to a progressive deficiency in mitochondrial energy producing systems, as also prompted by the negative correlation found between sperm mobility and the increase in certain mitochondrial metabolites.
Collapse
Affiliation(s)
- Nicolaia Iaffaldano
- Department of Agricultural, Environmental and Food Sciences, University of Molise, Campobasso, Italy
| | - Michele Di Iorio
- Department of Agricultural, Environmental and Food Sciences, University of Molise, Campobasso, Italy
| | - Luisa Mannina
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Rome, Italy
- Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica “Annalaura Segre”, CNR, Monterotondo, Rome, Italy
| | - Gianluca Paventi
- Department of Medicine and Health Sciences “V. Tiberio”, University of Molise, Campobasso, Italy
| | - Maria Pina Rosato
- Department of Agricultural, Environmental and Food Sciences, University of Molise, Campobasso, Italy
| | - Silvia Cerolini
- Department of Veterinary Medicine, University of Milan, Milan, Italy
| | - Anatoly P. Sobolev
- Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica “Annalaura Segre”, CNR, Monterotondo, Rome, Italy
| |
Collapse
|
13
|
Smrt ST, Draney AW, Singaram I, Lorieau JL. Structure and Dynamics of Membrane Proteins and Membrane Associated Proteins with Native Bicelles from Eukaryotic Tissues. Biochemistry 2017; 56:5318-5327. [PMID: 28915027 DOI: 10.1021/acs.biochem.7b00575] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Sean T. Smrt
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Adrian W. Draney
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Indira Singaram
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Justin L. Lorieau
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| |
Collapse
|
14
|
Mannina L, Marini F, Antiochia R, Cesa S, Magrì A, Capitani D, Sobolev AP. Tracing the origin of beer samples by NMR and chemometrics: Trappist beers as a case study. Electrophoresis 2016; 37:2710-2719. [DOI: 10.1002/elps.201600082] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 06/15/2016] [Accepted: 06/24/2016] [Indexed: 12/27/2022]
Affiliation(s)
- Luisa Mannina
- Dipartimento di Chimica e Tecnologie del Farmaco; Sapienza Università di Roma; Rome Italy
- Istituto di Metodologie Chimiche, CNR; Laboratorio di Risonanza Magnetica Nucleare “Annalaura Segre,”; Monterotondo Rome Italy
| | - Federico Marini
- Dipartimento di Chimica; Sapienza Università di Roma; Rome Italy
| | - Riccarda Antiochia
- Dipartimento di Chimica e Tecnologie del Farmaco; Sapienza Università di Roma; Rome Italy
| | - Stefania Cesa
- Dipartimento di Chimica e Tecnologie del Farmaco; Sapienza Università di Roma; Rome Italy
| | - Antonio Magrì
- Dipartimento di Chimica; Sapienza Università di Roma; Rome Italy
| | - Donatella Capitani
- Istituto di Metodologie Chimiche, CNR; Laboratorio di Risonanza Magnetica Nucleare “Annalaura Segre,”; Monterotondo Rome Italy
| | - Anatoly P. Sobolev
- Istituto di Metodologie Chimiche, CNR; Laboratorio di Risonanza Magnetica Nucleare “Annalaura Segre,”; Monterotondo Rome Italy
| |
Collapse
|
15
|
Mannina L, Sobolev AP, Coppo E, Di Lorenzo A, Nabavi SM, Marchese A, Daglia M. Antistaphylococcal activity and metabolite profiling of manuka honey (Leptospermum scoparium L.) after in vitro simulated digestion. Food Funct 2016; 7:1664-70. [DOI: 10.1039/c5fo01409c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The antistaphylococcal activity against methicillin-susceptible and -resistant Staphylococcus aureus and the metabolite profiling of manuka honey (MH) were investigated before and after in vitro simulated digestion.
Collapse
Affiliation(s)
- Luisa Mannina
- Dipartimento di Chimica e Tecnologie del Farmaco
- Sapienza Università di Roma
- Italy
- Istituto di Metodologie Chimiche
- Laboratorio di Risonanza Magnetica “Annalaura Segre”
| | - Anatoly P. Sobolev
- Istituto di Metodologie Chimiche
- Laboratorio di Risonanza Magnetica “Annalaura Segre”
- CNR
- Italy
| | - Erika Coppo
- Microbiology Unit
- DISC
- University of Genoa and IRCSS San Martino - IST
- Italy
| | - Arianna Di Lorenzo
- Department of Drug Sciences
- Medicinal Chemistry and Pharmaceutical Technology Section
- University of Pavia
- Italy
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center
- Baqiyatallah University of Medical Sciences
- Tehran
- Iran
| | - Anna Marchese
- Microbiology Unit
- DISC
- University of Genoa and IRCSS San Martino - IST
- Italy
| | - Maria Daglia
- Department of Drug Sciences
- Medicinal Chemistry and Pharmaceutical Technology Section
- University of Pavia
- Italy
| |
Collapse
|
16
|
Jawień E, Ząbek A, Deja S, Łukaszewicz M, Młynarz P. 1H NMR-based metabolic profiling for evaluating poppy seed rancidity and brewing. Cell Mol Biol Lett 2015; 20:757-72. [PMID: 26540222 DOI: 10.1515/cmble-2015-0044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 10/13/2015] [Indexed: 11/15/2022] Open
Abstract
Poppy seeds are widely used in household and commercial confectionery. The aim of this study was to demonstrate the application of metabolic profiling for industrial monitoring of the molecular changes which occur during minced poppy seed rancidity and brewing processes performed on raw seeds. Both forms of poppy seeds were obtained from a confectionery company. Proton nuclear magnetic resonance (1H NMR) was applied as the analytical method of choice together with multivariate statistical data analysis. Metabolic fingerprinting was applied as a bioprocess control tool to monitor rancidity with the trajectory of change and brewing progressions. Low molecular weight compounds were found to be statistically significant biomarkers of these bioprocesses. Changes in concentrations of chemical compounds were explained relative to the biochemical processes and external conditions. The obtained results provide valuable and comprehensive information to gain a better understanding of the biology of rancidity and brewing processes, while demonstrating the potential for applying NMR spectroscopy combined with multivariate data analysis tools for quality control in food industries involved in the processing of oilseeds. This precious and versatile information gives a better understanding of the biology of these processes.
Collapse
|
17
|
Mannina L, Sobolev AP, Di Lorenzo A, Vista S, Tenore GC, Daglia M. Chemical Composition of Different Botanical Origin Honeys Produced by Sicilian Black Honeybees (Apis mellifera ssp. sicula). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5864-5874. [PMID: 25730368 DOI: 10.1021/jf506192s] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In 2008 a Slow Food Presidium was launched in Sicily (Italy) for an early warning of the risk of extinction of the Sicilian native breed of black honeybee (Apis mellifera L. ssp sicula). Today, the honey produced by these honeybees is the only Sicilian honey produced entirely by the black honeybees. In view of few available data regarding the chemical composition of A. mellifera ssp. sicula honeys, in the present investigation the chemical compositions of sulla honey (Hedysarum coronarium L.) and dill honey (Anethum graveolens L.) were studied with a multimethodological approach, which consists of HPLC-PDA-ESI-MSn and NMR spectroscopy. Moreover, three unifloral honeys (lemon honey (obtained from Citrus limon (L.) Osbeck), orange honey (Citrus arantium L.), and medlar honey (Eriobotrya japonica (Thunb.) Lindl)), with known phenol and polyphenol compositions, were studied with NMR spectroscopy to deepen the knowledge about sugar and amino acid compositions.
Collapse
Affiliation(s)
- Luisa Mannina
- †Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Rome, Italy
- §Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica "Annalaura Segre", CNR, I-00015 Monterotondo, Rome, Italy
| | - Anatoly P Sobolev
- §Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica "Annalaura Segre", CNR, I-00015 Monterotondo, Rome, Italy
| | - Arianna Di Lorenzo
- #Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Silvia Vista
- †Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Rome, Italy
| | - Gian Carlo Tenore
- ⊥Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - Maria Daglia
- #Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| |
Collapse
|
18
|
Capitani D, Sobolev AP, Delfini M, Vista S, Antiochia R, Proietti N, Bubici S, Ferrante G, Carradori S, De Salvador FR, Mannina L. NMR methodologies in the analysis of blueberries. Electrophoresis 2015; 35:1615-26. [PMID: 24668393 DOI: 10.1002/elps.201300629] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 02/18/2014] [Accepted: 03/13/2014] [Indexed: 12/22/2022]
Abstract
An NMR analytical protocol based on complementary high and low field measurements is proposed for blueberry characterization. Untargeted NMR metabolite profiling of blueberries aqueous and organic extracts as well as targeted NMR analysis focused on anthocyanins and other phenols are reported. Bligh-Dyer and microwave-assisted extractions were carried out and compared showing a better recovery of lipidic fraction in the case of microwave procedure. Water-soluble metabolites belonging to different classes such as sugars, amino acids, organic acids, and phenolic compounds, as well as metabolites soluble in organic solvent such as triglycerides, sterols, and fatty acids, were identified. Five anthocyanins (malvidin-3-glucoside, malvidin-3-galactoside, delphinidin-3-glucoside, delphinidin-3-galactoside, and petunidin-3-glucoside) and 3-O-α-l-rhamnopyranosyl quercetin were identified in solid phase extract. The water status of fresh and withered blueberries was monitored by portable NMR and fast-field cycling NMR. (1) H depth profiles, T2 transverse relaxation times and dispersion profiles were found to be sensitive to the withering.
Collapse
Affiliation(s)
- Donatella Capitani
- Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica "Annalaura Segre", CNR, Monterotondo, Rome, Italy
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Saffron Samples of Different Origin: An NMR Study of Microwave-Assisted Extracts. Foods 2014; 3:403-419. [PMID: 28234327 PMCID: PMC5302256 DOI: 10.3390/foods3030403] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 05/30/2014] [Accepted: 06/16/2014] [Indexed: 11/23/2022] Open
Abstract
An NMR analytical protocol is proposed to characterize saffron samples of different geographical origin (Greece, Spain, Hungary, Turkey and Italy). A microwave-assisted extraction procedure was developed to obtain a comparable recovery of metabolites with respect to the ISO specifications, reducing the solvent volume and the extraction time needed. Metabolite profiles of geographically different saffron extracts were compared showing significant differences in the content of some metabolites.
Collapse
|
20
|
Sinanoglou VJ, Kokkotou K, Fotakis C, Strati I, Proestos C, Zoumpoulakis P. Monitoring the quality of γ-irradiated macadamia nuts based on lipid profile analysis and Chemometrics. Traceability models of irradiated samples. Food Res Int 2014. [DOI: 10.1016/j.foodres.2014.01.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
21
|
Marcone MF, Wang S, Albabish W, Nie S, Somnarain D, Hill A. Diverse food-based applications of nuclear magnetic resonance (NMR) technology. Food Res Int 2013. [DOI: 10.1016/j.foodres.2012.12.046] [Citation(s) in RCA: 208] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
22
|
Capitani D, Mannina L, Proietti N, Sobolev AP, Tomassini A, Miccheli A, Di Cocco ME, Capuani G, De Salvador FR, Delfini M. Metabolic profiling and outer pericarp water state in Zespri, CI.GI, and Hayward kiwifruits. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:1727-1740. [PMID: 23083310 DOI: 10.1021/jf3028864] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The metabolic profiling of aqueous extracts of Zespri Gold ( Actinidia chinensis ) and CI.GI (a controlled crossbreed from different species of Actinidia deliciosa ) kiwifruits and the water state of the outer pericarp of entire fruits were monitored over the season by means of high-field NMR spectroscopy and T(2) relaxation time measurements, respectively, and compared with the corresponding ones of Hayward kiwifruits previously investigated. A more complete assignment of the (1)H spectrum with respect to that obtained previously was reported: histidine, phenylalanine, quercetin 3-rhamnoside, and epicatechin were identified. Metabolic profiling confirmed Zespri's earlier maturation compared with the two other varieties. The water state of entire kiwifruits was measured nondestructively on fruits attached to the plants or detached from the plants. T(2) relaxation times were found to be sensitive to the kiwifruit developmental stage.
Collapse
Affiliation(s)
- Donatella Capitani
- Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica Annalaura Segre, CNR, Rome, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Mannina L, Sobolev AP, Viel S. Liquid state 1H high field NMR in food analysis. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2012; 66:1-39. [PMID: 22980032 DOI: 10.1016/j.pnmrs.2012.02.001] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Accepted: 01/27/2012] [Indexed: 05/09/2023]
Affiliation(s)
- Luisa Mannina
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Rome, Italy.
| | | | | |
Collapse
|
24
|
Mannina L, Sobolev AP, Capitani D. Applications of NMR metabolomics to the study of foodstuffs: truffle, kiwifruit, lettuce, and sea bass. Electrophoresis 2012; 33:2290-313. [PMID: 22887151 DOI: 10.1002/elps.201100668] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this review, four examples of the NMR metabolomic approach to foodstuff investigation are reported. Different types of foodstuff of different origin (namely truffle, kiwifruit, lettuce, and sea bass), with different metabolite composition, processing, and storage procedures have been chosen to demonstrate the versatility and potentiality of NMR in the foodstuff analysis. Fundamental aspects of NMR methodology such as sample preparation, metabolites extraction, quantitative elaboration of spectral data, and statistical analysis have been described. Metabolic profilings of aqueous and/or organic extracts as obtained by one- and two-dimensional NMR experiments have been reported together with the results obtained from their statistical elaboration. Discrimination between wild and farmed sea bass and between genetically modified and wild lettuces as well as changes in the kiwifruit metabolic profiles monitored over the season have been investigated. For each foodstuff, some complementary findings provided by other analytical methods are also described to underline the importance of different analytical approaches to explore specific aspects related to foodstuff.
Collapse
Affiliation(s)
- Luisa Mannina
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Rome, Italy.
| | | | | |
Collapse
|
25
|
Preto MSDM, Tavares MIB, Sebastião PJO. Caracterização dos constituintes poliméricos da Maytenus ilicifolia por relaxação nuclear de ¹H por RMN no estado sólido. POLIMEROS 2011. [DOI: 10.1590/s0104-14282011005000073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Maytenus ilicifolia, conhecida como espinheira-santa, é uma planta popular de uso diverso, como chá é empregada no combate a problemas de doenças gástricas e da diabetes, por exemplo. As plantas possuem em sua constituição polímeros naturais como polissacarídeos, politerpenoides, celulose e fibras. O estudo dos constituintes poliméricos nesse tipo de material tem importância fundamental tanto na identificação, ou seja, qualificação quanto na adulteração da planta. É sabido que podem ser encontrados diversos produtos rotulados como sendo originário da mesma planta, entretanto, muitas das vezes a origem da planta é similar, mas não a mesma, o que pode gerar algum desconforto ou não atividade biológica dos chás quando da ingestão destes. Na literatura não são encontrados muitos trabalhos que envolvam a caracterização comparativa dos constituintes poliméricos, como polissacarídeos e fibras presentes em amostras de origens distintas, para comprovação de adulteração destes produtos. Uma técnica que pode ser promissora para este tipo de estudo é a Ressonância Magnética Nuclear (RMN) em estado sólido, já que permite analisar a amostra in natura não sendo um método destrutivo ou invasivo. Esta espectroscopia analisa amostras em campos magnéticos de diferentes potências ou forças. Neste trabalho é apresentado um estudo de caracterização dos constituintes poliméricos majoritários presentes na M. ilicifolia. Três amostras foram estudadas: uma amostra denominada controle e duas comerciais. O estudo envolveu a determinação dos tempos de relaxação spin-rede (T1) do ¹H utilizando a técnica de campo cíclico rápido (FFC), numa gama de frequências que variou de 100 kHz a 10 MHz. Assim, o principal objetivo deste trabalho foi estudar a possibilidade de utilização da RMN de baixo campo magnético na elaboração de um método expedito de análise que permita realizar a caracterização estrutural, verificação de autenticidade e/ou avaliação de eventual adulteração nesse tipo de amostra. Pelos resultados obtidos foi possível diferenciar as duas amostras comerciais por comparação com a amostra controle.
Collapse
|
26
|
Koda M, Furihata K, Wei F, Miyakawa T, Tanokura M. F2-selective two-dimensional NMR spectroscopy for the analysis of minor components in foods. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2011; 49:710-716. [PMID: 22002587 DOI: 10.1002/mrc.2813] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Revised: 07/12/2011] [Accepted: 07/24/2011] [Indexed: 05/31/2023]
Abstract
In this study, we propose F(2)-selective 2D NMR spectroscopy as an effective method to obtain high-quality spectra of minor components in complex foodstuffs. Selective excitation along the F(2) axis overcame the problems occurring in the conventional F(1)-selective 2D NMR spectroscopy. The technique was successfully applied to mango juice to provide high-quality TOCSY, DQF-COSY, and NOESY spectra of the minor components for the assignment of their signals. In addition, high-quality TOCSY spectra were obtained for the minor components of Japanese sake and honey. These results indicate that F(2)-selective 2D NMR spectroscopy will be useful for the non-destructive analysis of various foods.
Collapse
Affiliation(s)
- Masanori Koda
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Tokyo 113-8657, Japan
| | | | | | | | | |
Collapse
|
27
|
Piccioni F, Capitani D, Zolla L, Mannina L. NMR metabolic profiling of transgenic maize with the Cry1Ab gene. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:6041-9. [PMID: 19545151 DOI: 10.1021/jf900811u] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The metabolic profiles of seeds from the transgenic maize variety 33P67 and of the corresponding traditional variety were investigated using one- and two-dimensional NMR techniques. The transgenic variety carries a functional Cry1A(b) gene, which confers to the plant the ability to produce Bt insect toxin. About 40 water-soluble metabolites in the maize seed extracts were identified, providing a more complete (1)H and (13)C NMR assignment with respect to the assignment reported in the literature. In particular ethanol, lactic acid, citric acid, lysine, arginine, glycine-betaine, raffinose, trehalose, alpha-galactose, and adenine were identified for the first time in the (1)H NMR spectrum of maize seeds extracts. The (1)H spectra of transgenic and nontransgenic seed maize samples turned out to be conservative, showing the same signals and therefore the same metabolites. However, a higher concentration of ethanol, citric acid, glycine-betaine, trehalose, as well as of another compound not yet completely identified, was observed in the transgenic extracts than in nontransgenic samples. So, it was possible to discriminate between transgenic and nontransgenic metabolic profilings through the use of an appropriate statistical analysis.
Collapse
Affiliation(s)
- Fabiana Piccioni
- Dipartimento di Scienze Ambientali, Università degli Studi della Tuscia, I-01100 Viterbo, Italy
| | | | | | | |
Collapse
|
28
|
|
29
|
Sobolev AP, Segre AL, Giannino D, Mariotti D, Nicolodi C, Brosio E, Amato ME. Strong increase of foliar inulin occurs in transgenic lettuce plants (Lactuca sativa L.) overexpressing the Asparagine Synthetase A gene from Escherichia coli. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:10827-31. [PMID: 18044837 DOI: 10.1021/jf072437x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Transgenic lettuce (Lactuca sativa L. cv. 'Cortina') lines expressing the asparagine synthetase A gene from Escherichia coli were produced to alter the plant nitrogen status and eventually enhance growth. The relative molecular abundance of water-soluble metabolites was measured by 1H NMR in transgenic and conventional plants at early developmental stages and grown under the same conditions. NMR metabolic profiles assessed that a transgenic line and the wild-type counterpart shared the same compounds, but it also revealed side effects on the carbon metabolism following genetic modification. Concerning the nitrogen status, the amino acid content did not vary significantly, except for glutamic acid and gamma-aminobutyric acid, which diminished in the transgenics. As for the carbon metabolism, in transgenic leaves the contents of sucrose, glucose, and fructose decreased, whereas that of inulin increased up to 30 times, accompanied by the alteration of most Krebs's cycle organic acids and the rise of tartaric acid compared to nontransformed controls. Lettuce leaf inulins consisted of short oligomeric chains made of one glucose unit bound to two/four fructose units. Inulins are beneficial for human health, and they are extracted from plants and commercialized as long-chain types, whereas the short forms are synthesized chemically. Hence, lettuce genotypes with high content of foliar short-chain inulin represent useful materials for breeding strategies and a potential source for low molecular weight inulin.
Collapse
Affiliation(s)
- Anatoli P Sobolev
- Institute of Chemical Methodologies, CNR, Research Area of Rome, Italy.
| | | | | | | | | | | | | |
Collapse
|