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Xu Z, Zhu S, Wang W, Liu S, Zhou X, Dai W, Ding Y. Rapid and non-destructive freshness evaluation of squid by FTIR coupled with chemometric techniques. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:3000-3009. [PMID: 34773403 DOI: 10.1002/jsfa.11640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 11/07/2021] [Accepted: 11/13/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Freshness is an important quality of squid with respect to determining the market price. The methods of evaluation of freshness fail to be widely used as a result of the lack of rapidity and quantitation. In the present study, a rapid and non-destructive quantification of squid freshness by Fourier transform infrared spectroscopy (FTIR) spectra combined with chemometric techniques was performed. RESULTS The relatively linear content change of trimethylamine (TMA-N) and dimethylamine (DMA-N) of squid during storage at 4 °C indicated their feasibility as a freshness indicator, as also confirmed by sensory evaluation. The spectral changes were mainly caused by the degradation of proteins and the production of amines by two-dimensional infrared correlation spectroscopy, among which TMA-N, DMA-N and putrescine were the main amines. The successive projections algorithm (SPA) was employed to select the sensitive wavenumbers to freshness for modeling prediction including partial least-squares regression, support vector regression (SVR) and back-propagation artificial neural network. Generally, the SPA-SVR model of the selected characteristic wavenumber showed a higher prediction accuracy for DMA-N (R2 P = 0.951; RMSEP = 0.218), whereas both SPA-SVR (R2 P = 0.929; RMSEP = 2.602) and Full-SVR (R2 P = 0.941; RMSEP = 2.492) models had a higher predictive ability of TMA-N. CONCLUSION The results of the present study demonstrate that FTIR spectroscopy coupled with multivariate calibration shows significant potential for the prediction of freshness in squid. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Zheng Xu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou, China
- National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou, China
| | - Shichen Zhu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou, China
- National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Wenjie Wang
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou, China
- National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Shulai Liu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou, China
- National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Xuxia Zhou
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou, China
- National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Wangli Dai
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou, China
- National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou, China
| | - Yuting Ding
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou, China
- National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
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Kummen M, Vesterhus M, Trøseid M, Moum B, Svardal A, Boberg KM, Aukrust P, Karlsen TH, Berge RK, Hov JR. Elevated trimethylamine- N-oxide (TMAO) is associated with poor prognosis in primary sclerosing cholangitis patients with normal liver function. United European Gastroenterol J 2016; 5:532-541. [PMID: 28588885 DOI: 10.1177/2050640616663453] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 07/14/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Trimethylamine-N-oxide (TMAO) is produced in the liver from trimethylamine, which is exclusively generated by gut bacteria. OBJECTIVE The objective of this article is to investigate the relationship between TMAO and primary sclerosing cholangitis (PSC) and its clinical characteristics. METHODS Serum TMAO was measured in 305 PSC patients, 90 ulcerative colitis patients and 99 healthy controls. RESULTS In PSC patients with normal liver function (n = 197), TMAO was higher in patients reaching liver transplantation or death during follow-up than those who did not, with an optimal TMAO cut-off of 4.1 µM (AUC = 0.64, p < 0.001). PSC patients with high TMAO (>4.1 µM, n = 77) exhibited shorter transplantation-free survival than patients with low TMAO (n = 120, log-rank test: p < 0.0001). High TMAO (>4.1 µM) was associated with reduced transplantation-free survival (HR 1.87, p = 0.011), independently of the Mayo risk score (HR 1.74, p < 0.001). Overall, PSC patients demonstrated reduced TMAO values compared with ulcerative colitis and healthy controls, mainly caused by PSC patients with reduced liver function (INR > 1.2), suggesting impaired oxidation of trimethylamine to TMAO. PSC patients with and without inflammatory bowel disease had similar TMAO levels. CONCLUSION In PSC patients with normal liver function, elevated TMAO was associated with shorter transplantation-free survival, potentially reflecting clinically relevant metabolic changes resulting from dietary interactions with the gut microbiota.
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Affiliation(s)
- Martin Kummen
- Norwegian PSC Research Center, Division of Surgery, Inflammatory Medicine and Transplantation, Oslo University Hospital Rikshospitalet, Oslo, Norway.,K.G. Jebsen Inflammation Research Centre, University of Oslo, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Mette Vesterhus
- Norwegian PSC Research Center, Division of Surgery, Inflammatory Medicine and Transplantation, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Department of Medicine, National Centre for Ultrasound in Gastroenterology, Haukeland University Hospital, Bergen, Norway
| | - Marius Trøseid
- K.G. Jebsen Inflammation Research Centre, University of Oslo, Oslo, Norway.,Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Bjørn Moum
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Division of Medicine, Department of Gastroenterology, Oslo University Hospital Ullevål, Oslo, Norway
| | - Asbjørn Svardal
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Kirsten Muri Boberg
- Norwegian PSC Research Center, Division of Surgery, Inflammatory Medicine and Transplantation, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Section of Gastroenterology, Division of Surgery, Inflammatory Medicine and Transplantation, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Pål Aukrust
- K.G. Jebsen Inflammation Research Centre, University of Oslo, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Tom Hemming Karlsen
- Norwegian PSC Research Center, Division of Surgery, Inflammatory Medicine and Transplantation, Oslo University Hospital Rikshospitalet, Oslo, Norway.,K.G. Jebsen Inflammation Research Centre, University of Oslo, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Section of Gastroenterology, Division of Surgery, Inflammatory Medicine and Transplantation, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Rolf Kristian Berge
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Johannes Roksund Hov
- Norwegian PSC Research Center, Division of Surgery, Inflammatory Medicine and Transplantation, Oslo University Hospital Rikshospitalet, Oslo, Norway.,K.G. Jebsen Inflammation Research Centre, University of Oslo, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Section of Gastroenterology, Division of Surgery, Inflammatory Medicine and Transplantation, Oslo University Hospital Rikshospitalet, Oslo, Norway
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Fennema D, Phillips IR, Shephard EA. Trimethylamine and Trimethylamine N-Oxide, a Flavin-Containing Monooxygenase 3 (FMO3)-Mediated Host-Microbiome Metabolic Axis Implicated in Health and Disease. ACTA ACUST UNITED AC 2016; 44:1839-1850. [PMID: 27190056 PMCID: PMC5074467 DOI: 10.1124/dmd.116.070615] [Citation(s) in RCA: 230] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/13/2016] [Indexed: 02/06/2023]
Abstract
Flavin-containing monooxygenase 3 (FMO3) is known primarily as an enzyme involved in the metabolism of therapeutic drugs. On a daily basis, however, we are exposed to one of the most abundant substrates of the enzyme trimethylamine (TMA), which is released from various dietary components by the action of gut bacteria. FMO3 converts the odorous TMA to nonodorous TMA N-oxide (TMAO), which is excreted in urine. Impaired FMO3 activity gives rise to the inherited disorder primary trimethylaminuria (TMAU). Affected individuals cannot produce TMAO and, consequently, excrete large amounts of TMA. A dysbiosis in gut bacteria can give rise to secondary TMAU. Recently, there has been much interest in FMO3 and its catalytic product, TMAO, because TMAO has been implicated in various conditions affecting health, including cardiovascular disease, reverse cholesterol transport, and glucose and lipid homeostasis. In this review, we consider the dietary components that can give rise to TMA, the gut bacteria involved in the production of TMA from dietary precursors, the metabolic reactions by which bacteria produce and use TMA, and the enzymes that catalyze the reactions. Also included is information on bacteria that produce TMA in the oral cavity and vagina, two key microbiome niches that can influence health. Finally, we discuss the importance of the TMA/TMAO microbiome-host axis in health and disease, considering factors that affect bacterial production and host metabolism of TMA, the involvement of TMAO and FMO3 in disease, and the implications of the host-microbiome axis for management of TMAU.
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Affiliation(s)
- Diede Fennema
- Institute of Structural and Molecular Biology, University College London (D.F., I.R.P., E.A.S.), and School of Biological and Chemical Sciences, Queen Mary University of London (I.R.P.), London, United Kingdom
| | - Ian R Phillips
- Institute of Structural and Molecular Biology, University College London (D.F., I.R.P., E.A.S.), and School of Biological and Chemical Sciences, Queen Mary University of London (I.R.P.), London, United Kingdom
| | - Elizabeth A Shephard
- Institute of Structural and Molecular Biology, University College London (D.F., I.R.P., E.A.S.), and School of Biological and Chemical Sciences, Queen Mary University of London (I.R.P.), London, United Kingdom
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Rappert S, Müller R. Microbial degradation of selected odorous substances. WASTE MANAGEMENT (NEW YORK, N.Y.) 2005; 25:940-54. [PMID: 16140515 DOI: 10.1016/j.wasman.2005.07.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2004] [Revised: 06/06/2005] [Accepted: 07/20/2005] [Indexed: 05/04/2023]
Abstract
A biological odor treatment system has several advantages compared to conventional physical and chemical treatment technologies: (1) it is highly efficient in the treatment of waste gases characterized by high flow rates and low concentrations of contaminants; (2) the biodegradable pollutants are completely destroyed; and (3) it has low cost [Devinny, J.S., Deshusses, M.A., Webster, T.S., 1999. Biofiltration for Air Pollution Control. Lewis Publisher, New York, USA; Kennes, C., Veiga, M.C., 2001. Bioreactors for waste gas treatment. Kluwer Academic Publishers, London]. Because microorganisms play the major role in the successful biological odor treatment system, the understanding of microbial degradation of the key odorants is very important. This article describes the occurrence and the characteristics of selected key odorous compounds such as sulphides, amines, and pyrazine compounds. The article reviews available information in the literature and our experimental results of microbial degradation of the selected compounds. This is the first article that presents the isolation and characterization of bacterial strains that can utilize dimethyl trisulfide (DMTS), triethylamine (TEA) or different pyrazines, as a sole carbon and energy source. The biological degradation pathways of some of these compounds are postulated. Moreover, the influence of the presence of other odorous compounds in the culture medium on the degradation of the target odorous compounds by the isolated bacteria is presented. The information presented in the paper can be used to develop new systems for biological odor treatment.
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Affiliation(s)
- S Rappert
- Biotechnology II, Technical University Hamburg-Harburg, Denickestrasse 15, 21071 Hamburg, Germany
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