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Kobayashi W, Tomizawa A, Kurawaka M, Abe M, Watanabe A, Ayabe S. Metabolomic profiling of the nutritional components of chicory leaves following heat processing. J Food Sci 2024; 89:2054-2066. [PMID: 38391109 DOI: 10.1111/1750-3841.16998] [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: 12/04/2023] [Revised: 01/30/2024] [Accepted: 02/07/2024] [Indexed: 02/24/2024]
Abstract
Chicory (Cichorium intybus L.; witloof) is a crisp bitter leafy vegetable, popularly used in western cuisine in salads and soups (leaves) and as an alternative to coffee (roasted roots). In this study, we explored the effect of heat processing under various temperatures and for different durations on the nutritional composition of chicory leaves using gas chromatography-mass spectrometry (GC/MS) and principal component analysis (PCA). "Vintor" chicory leaves were processed and homogenized to obtain lyophilized samples, and their moisture content and pH were measured. Heat processing was conducted at 4, 30, 60, and 100°C. Metabolites were extracted and analyzed using GC/MS. The results were statistically analyzed using multiple t-tests and Tukey-Kramer method. A PCA was conducted using standardized data. A lower temperature (≤60°C) positively influenced the concentrations of nutritional components (sugars, free amino acids, and organic acids), branched-chain amino acids (which reportedly improve exercise performance), and γ-aminobutyric acid (which exerts antihypertensive effects). Whereas, a higher temperature (100°C) and microwave processing induced the generation of low-molecular-weight sugars from polysaccharides and glycosides, decreased free amino acid concentrations, and caused heat-induced aminocarbonyl reactions. This study provides valuable information for enhancing the flavor profiles and potential health benefits of chicory leaves by identifying the optimal heat processing parameters for preserving the desired nutritional value. PRACTICAL APPLICATION: The palatability, nutritional content, and health benefits of chicory have been evaluated based on its inherent constituents, but changes in these parameters during food processing remain unclear. Heating at 30 and 60°C activated secondary metabolism in chicory, increasing the amino acid and organic acid concentrations, whereas heating at 100°C and microwave processing increased the sugar concentrations in chicory. Thus, the nutritional value and potential health benefits of chicory could be enhanced by processing it under controlled temperatures; the findings are valuable for both consumers and food processing industry.
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Affiliation(s)
- Wataru Kobayashi
- Department of Health and Nutrition, Faculty of Human Health, Komazawa Women's University, Inagi-shi, Tokyo, Japan
| | - Ayumi Tomizawa
- Department of Food and Nutrition, Takasaki University of Health and Welfare Graduate School, Takasaki-shi, Gunma, Japan
| | - Misaki Kurawaka
- Department of Food Development, Faculty of Human Life, Jumonji University, Niiza-shi, Saitama, Japan
| | - Masako Abe
- Department of Health and Nutrition, Faculty of Health and Welfare, Takasaki University of Health and Welfare, Takasaki-shi, Gunma, Japan
| | - Akio Watanabe
- Department of Food Development, Faculty of Human Life, Jumonji University, Niiza-shi, Saitama, Japan
| | - Sonoko Ayabe
- Department of Food and Nutrition, Takasaki University of Health and Welfare Graduate School, Takasaki-shi, Gunma, Japan
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2
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Shalders TC, Champion C, Coleman MA, Butcherine P, Broadhurst MK, Mead B, Benkendorff K. Impacts of seasonal temperatures, ocean warming and marine heatwaves on the nutritional quality of eastern school prawns (Metapenaeus macleayi). THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 876:162778. [PMID: 36906039 DOI: 10.1016/j.scitotenv.2023.162778] [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: 11/27/2022] [Revised: 01/26/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Ocean warming and marine heatwaves significantly alter environmental conditions in marine and estuarine environments. Despite their potential global importance for nutrient security and human health, it is not well understood how thermal impacts could alter the nutritional quality of harvested marine resources. We tested whether short-term experimental exposure to seasonal temperatures, projected ocean-warming temperatures, and marine heatwaves affected the nutritional quality of the eastern school prawn (Metapenaeus macleayi). In addition, we tested whether nutritional quality was affected by the duration of exposure to warm temperatures. We show the nutritional quality of M. macleayi is likely to be resilient to short- (28 d), but not longer-term (56 d) exposure to warming temperatures. The proximate, fatty acid and metabolite compositions of M. macleayi were unchanged after 28 d exposure to simulated ocean warming and marine heatwaves. The ocean-warming scenario did, however, show potential for elevated sulphur, iron and silver levels after 28 d. Decreasing saturation of fatty acids in M. macleayi after 28 d exposure to cooler temperatures indicates homeoviscous adaptation to seasonal changes. We found that 11 % of measured response variables were significantly different between 28 and 56 d when exposed to the same treatment, indicating the duration of exposure time and time of sampling are critical when measuring this species' nutritional response. Further, we found that future acute warming events could reduce harvestable biomass, despite survivors retaining their nutritional quality. Developing a combined knowledge of the variability in seafood nutrient content with shifts in the availability of harvested seafood is crucial for understanding seafood-derived nutrient security in a changing climate.
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Affiliation(s)
- Tanika C Shalders
- Faculty of Science and Engineering, National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia; NSW Department of Primary Industries, National Marine Science Centre, Coffs Harbour, New South Wales, Australia.
| | - Curtis Champion
- Faculty of Science and Engineering, National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia; NSW Department of Primary Industries, National Marine Science Centre, Coffs Harbour, New South Wales, Australia
| | - Melinda A Coleman
- Faculty of Science and Engineering, National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia; NSW Department of Primary Industries, National Marine Science Centre, Coffs Harbour, New South Wales, Australia
| | - Peter Butcherine
- Faculty of Science and Engineering, National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia
| | - Matt K Broadhurst
- Faculty of Science and Engineering, National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia; NSW Department of Primary Industries, National Marine Science Centre, Coffs Harbour, New South Wales, Australia
| | - Bryan Mead
- Analytical Research Laboratory, Southern Cross Analytical and Research Services, Southern Cross University, Lismore, New South Wales, Australia
| | - Kirsten Benkendorff
- Faculty of Science and Engineering, National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia
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Yang R, Dong Y, Gao F, Li J, Stevanovic ZD, Li H, Shi L. Comprehensive Analysis of Secondary Metabolites of Four Medicinal Thyme Species Used in Folk Medicine and Their Antioxidant Activities In Vitro. Molecules 2023; 28:molecules28062582. [PMID: 36985554 PMCID: PMC10052123 DOI: 10.3390/molecules28062582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/04/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023] Open
Abstract
Thyme is a colloquial term for number of aromatic species belonging to the genus Thymus L., known for their expressed biological activities and therefore used worldwide for seasoning and in folk medicine. In the present paper, the content of the total polyphenols (TP), total flavonoids (TF), and antioxidant capacity were assessed in the extracts of four traditionally used thyme species. Moreover, a comprehensive metabolomic study of thyme bioactive compounds was performed, and the obtained data were processed using multivariate statistical tests. The results clearly demonstrated the positive correlation between the content of the TP, TF, and antioxidant activity, and TF was more significant than TP. The findings revealed that four selected thyme species contained 528 secondary metabolites, including 289 flavonoids and 146 phenolic acids. Thymus marschallianus had a higher concentration of active ingredients, which improve its antioxidant capacity. Differentially accumulated metabolites were formed by complex pathways such as flavonoid, flavone, flavonol, isoflavonoid, and anthocyanin biosynthesis. Correlation analysis showed that 59 metabolites (including 28 flavonoids, 18 phenolic acids, and 7 terpenoid compounds) were significantly correlated with obtained values of the antioxidant capacity. The results suggested that selected thyme species exhibit a great diversity in antioxidant-related components, whereas flavonoids may be responsible for the high antioxidant capacity of all studied thyme species. The present study greatly expands our understanding of the complex phytochemical profiles and related applications of selected medicinal plants.
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Affiliation(s)
- Rui Yang
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (R.Y.); (Y.D.); (F.G.); (J.L.)
- China National Botanical Garden, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanmei Dong
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (R.Y.); (Y.D.); (F.G.); (J.L.)
- China National Botanical Garden, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fei Gao
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (R.Y.); (Y.D.); (F.G.); (J.L.)
- China National Botanical Garden, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingyi Li
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (R.Y.); (Y.D.); (F.G.); (J.L.)
| | - Zora Dajic Stevanovic
- Department of Agrobotany, University of Belgrade Faculty of Agriculture, Nemanjina 6, 11080 Zemun, Serbia;
| | - Hui Li
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (R.Y.); (Y.D.); (F.G.); (J.L.)
- China National Botanical Garden, Beijing 100093, China
- Correspondence: (H.L.); (L.S.)
| | - Lei Shi
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (R.Y.); (Y.D.); (F.G.); (J.L.)
- China National Botanical Garden, Beijing 100093, China
- Correspondence: (H.L.); (L.S.)
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4
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Shirai N. Organic Acid Analysis in Green Tea Leaves Using High-performance Liquid Chromatography. J Oleo Sci 2022; 71:1413-1419. [PMID: 35965093 DOI: 10.5650/jos.ess22135] [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: 11/13/2022] Open
Abstract
Green tea is a popular refreshing drink with several functional properties attributed to its bioactive compounds. The bioactive content and composition vary with several factors. Several advances in chromatographic studies have facilitated the study of chemical composition of green tea leaves; however, the content of organic acids, particularly quinic acid, has not been explored fully. Therefore, changes in the content of organic acids, including quinic acid, in green tea leaves, were investigated in this study. All the studied varieties contained large amounts of quinic and oxalic acids. Kukicha and Matcha contained the highest and lowest amounts of quinic acid, respectively. Furthermore, high-grade Matcha had a significantly lower quinic acid content than low-grade Matcha. The Asatsuyu sample had the lowest quinic acid content in 2018 and 2019 compared with the other green tea varieties. The content of quinic acid increased with maturity, but that of oxalic, malic, succinic, and citric acids decreased after a slight increase. Shading cultivation in Saeakari significantly lowered the quinic acid content and slightly increased the content of malic, citric, and oxalic acids. Malic acid and citric acid content in Yabukita changed with sunrise and sunset, but that of other organic acids did not show any considerable change. These results show that using an appropriate plucking time could lead to further improvement in the quality of green tea leaves. Overall, green tea is a good source of quinic acid, which will attract attention in future functional research on this drink.
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Affiliation(s)
- Nobuya Shirai
- National Agriculture and Food Research Organization, National Food Research Institute
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5
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Li M, Luo X, Ho CT, Li D, Guo H, Xie Z. A new strategy for grading of Lu’an guapian green tea by combination of differentiated metabolites and hypoglycaemia effect. Food Res Int 2022; 159:111639. [DOI: 10.1016/j.foodres.2022.111639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/30/2022] [Accepted: 07/05/2022] [Indexed: 12/08/2022]
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6
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Guo Y, Sun K, Cheng Y, Yu H, Xie Y, Zhang H, Yao W, Qian H. Authentication of shiitake powder using HPLC fingerprints combined with chemometrics. Eur Food Res Technol 2022. [DOI: 10.1007/s00217-021-03950-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Wang YS, Fang MZ, Zheng SD, Cho JG, Yi TH. Identification of Chinese green tea ( Camellia sinensis) marker metabolites using GC/MS and UPLC-QTOF/MS. Food Sci Biotechnol 2021; 30:1293-1301. [PMID: 34721925 DOI: 10.1007/s10068-021-00970-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 07/18/2021] [Accepted: 08/10/2021] [Indexed: 11/28/2022] Open
Abstract
Tea is one of the most widely consumed aromatic beverages in the world because of its taste and flavor, as well as due to many potential health beneficial properties. Metabolomics focuses on an in-depth analysis of all metabolites in living organisms. In this study, 29 primary metabolites and 25 secondary metabolites were identified using GC/MS and UPLC-QTOF/MS, respectively. Further, PCA analysis showed conspicuous discrimination for the ten varieties of green tea with metabolite profiling. Among them, organic acids, amino acids, flavan-3-ols, and flavonol glycosides varied greatly through checking the VIP values of the PLS-DA model. Moreover, the intrinsic and/or extrinsic factors characterizing each type of green tea were also discussed. The chemical component marker derived here should be used as an important detection index, while evaluating the tea quality, as well as while establishing the tea quality standard. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-021-00970-4.
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Affiliation(s)
- Yu-Shuai Wang
- Department of Pharmacy, Bengbu Medical College, 2600 Donghai Avenue, Bengbu, 233030 China
| | - Min-Zhe Fang
- Department of Oriental Medicinal Biotechnology, College of Life Sciences, Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104 Republic of Korea
| | - Sheng-Dao Zheng
- Department of Oriental Medicinal Biotechnology, College of Life Sciences, Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104 Republic of Korea
| | - Jin-Gyeong Cho
- Department of Oriental Medicinal Biotechnology, College of Life Sciences, Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104 Republic of Korea
| | - Tae-Hoo Yi
- Department of Oriental Medicinal Biotechnology, College of Life Sciences, Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104 Republic of Korea
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8
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Ikram MMM, Mizuno R, Putri SP, Fukusaki E. Comparative metabolomics and sensory evaluation of pineapple (Ananas comosus) reveal the importance of ripening stage compared to cultivar. J Biosci Bioeng 2021; 132:592-598. [PMID: 34593317 DOI: 10.1016/j.jbiosc.2021.08.008] [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: 06/09/2021] [Revised: 08/17/2021] [Accepted: 08/23/2021] [Indexed: 12/31/2022]
Abstract
The pineapple ripening stage is determined at the time of harvest and can be classified into the C0 to C4 stage based on its peel color. C1 and C4 pineapples are the most commonly exported products with high demand. Pineapple also has many cultivars with different tastes and appearances. However, there are limited studies regarding the metabolite and taste profiles of pineapple from different cultivars and ripening stages using a metabolomics approach. Therefore, the objective of this study was to investigate the metabolite and sensory profiles of pineapple from different cultivars and different ripening stages. Three cultivars of pineapple (Red Spanish, Smooth Cayenne, and Queen) and C1, C3, and C4 stages from Indonesia, Japan, the Philippines, and Taiwan, respectively, were analyzed by gas chromatography/mass spectrometry (GC/MS). The data obtained from GC/MS analysis were combined with the data obtained from sensory evaluation, which showed that sourness and firmness contributed to C1 fruits with metabolites correlated to isocitric acid+citric acid, malic acid, ascorbic acid, and quinic acid, while sweetness, juiciness, and high acceptability contributed to C4 fruits with metabolites that correlated were asparagine, serine, glycine, threonic acid, sucrose, and 5-hydroxytryptamine. GC/MS analysis using different pineapple cultivars also showed characteristic metabolites for each cultivar. Prediction of the sensory profile was performed by investigating the relative intensity of taste-related metabolites. This information can provide a basis for improving pineapple taste quality related to metabolites, depending on the cultivar and ripening stage.
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Affiliation(s)
- Muhammad Maulana Malikul Ikram
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Reo Mizuno
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Sastia Prama Putri
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan; Industrial Biotechnology Initiative Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan.
| | - Eiichiro Fukusaki
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan; Industrial Biotechnology Initiative Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan; Osaka University-Shimadzu Omics Innovation Research Laboratories, Osaka University, Suita, Osaka, Japan
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9
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Huang A, Jiang Z, Tao M, Wen M, Xiao Z, Zhang L, Zha M, Chen J, Liu Z, Zhang L. Targeted and nontargeted metabolomics analysis for determining the effect of storage time on the metabolites and taste quality of keemun black tea. Food Chem 2021; 359:129950. [PMID: 33945989 DOI: 10.1016/j.foodchem.2021.129950] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 01/20/2023]
Abstract
The black tea could be stored for a long time, and subsequently affects the flavor characteristics. In the present study, the effects of storage years (1, 2, 3, 4, 5, 10, 17 and 20 years) on the chemical profiling and taste quality of keemun black tea (KBT) were compared by metabolomics and quantitative sensory evaluation. The main polyphenols were degraded during the storing, especially 10-year storage, but caffeine and theobromine were stable. The intensity of bitterness, astringency, umami was negatively correlated to storage years, with correlation coefficient at -0.95, -0.91 and -0.83 respectively, whereas sweetness had positive correlation coefficient at 0.74. Quinic acid, galloylated catechins, linolenic acid, linoleic acid, malic acid, palamitic acid, and theaflavin-3́-gallate were marker compounds which were responsible for distinguishing short and long time preserved KBT. The contents of fatty acids were positively correlated to storage time and sweet intensity.
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Affiliation(s)
- Ai Huang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China; International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, China
| | - Zongde Jiang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China; International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, China
| | - Meng Tao
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China; International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, China
| | - Mingchun Wen
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China; International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, China
| | - Zhipeng Xiao
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China; International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, China
| | - Lan Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China; International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, China
| | - Minyu Zha
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China; International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, China
| | - Jiayu Chen
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China; International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, China
| | - Zhengquan Liu
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China; International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, China.
| | - Liang Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China; International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, China.
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10
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GC-MS analysis and molecular docking of bioactive compounds of Camellia sinensis and Camellia assamica. Arch Microbiol 2021; 203:2501-2510. [PMID: 33677633 DOI: 10.1007/s00203-021-02209-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/22/2020] [Accepted: 02/09/2021] [Indexed: 10/22/2022]
Abstract
The methanol extract of Camellia sinensis (MES) and acetone extract of Camellia assamica (AEA) were subjected to the thin layer chromatography to separate the bioactive compounds. The antimicrobial activity of all the fractions was carried out against pathogenic microorganisms by the agar-well diffusion method. The most effective bioactive fraction of each plant species was analysed by GC-MS. Fraction L of methanol extract of C. sinensis (MES) and fraction 5 of acetone extract of C. assamica (AEA) were found very effective against selected pathogenic strains. GC-MS analysis of this fraction showed the presence of n-heptadecanol-1 (68.63%) in MES and 2',6'dihydroxyacetophenone, bis(trimethylsilyl) (17.58%) in AEA with the highest area. The compounds n-heptadecanol-1 and 2',6'dihydroxyacetophenone, bis(trimethylsilyl) ether were used for docking to analyse its therapeutic potential. The ligand compound n-heptadecanol-1 (HEP) from MES of C. sinensis and 2',6'dihydroxyacetophenone, bis(trimethylsilyl) ether from AEA of C. assamica were docked with the target protein dihydropteoate synthase (DHPS) active sites of Escherichia coli and Staphylococcus aureus active sites via Auto Dock Vina, thereby forecasting the finest binding position of ligands. AutoDock Vina docked results revealed the involvement of binding energy for the establishment of the protein-ligand structure complex, besides generating an interpretation of all apparent molecular interactions accountable for its activity. Further, the protein-ligand complex of MES, EcDHPS + HEP and SaDHPS + HEP exhibiting the best binding affinity were - 4.8 kcal/mol and - 3.6 kcal/mol. The protein-ligand complex of AEA, i.e., EcDHPS + DHA and SaDHPS + DHA exhibited the best binding affinity of - 4.8 kcal/mol and - 4.8 kcal/mol.
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11
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Yamamoto H, Nakayama Y, Tsugawa H. OS-PCA: Orthogonal Smoothed Principal Component Analysis Applied to Metabolome Data. Metabolites 2021; 11:metabo11030149. [PMID: 33807892 PMCID: PMC7999099 DOI: 10.3390/metabo11030149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/27/2021] [Accepted: 03/01/2021] [Indexed: 12/20/2022] Open
Abstract
Principal component analysis (PCA) has been widely used in metabolomics. However, it is not always possible to detect phenotype-associated principal component (PC) scores. Previously, we proposed a smoothed PCA for samples acquired with a time course or rank order, but hypothesis testing to select significant metabolite candidates was not possible. Here, we modified the smoothed PCA as an orthogonal smoothed PCA (OS-PCA) so that statistical hypothesis testing in OS-PC loadings could be performed with the same PC projections provided by the smoothed PCA. Statistical hypothesis testing is especially useful in metabolomics because biological interpretations are made based on statistically significant metabolites. We applied the OS-PCA method to two real metabolome datasets, one for metabolic turnover analysis and the other for evaluating the taste of Japanese green tea. The OS-PCA successfully extracted similar PC scores as the smoothed PCA; these scores reflected the expected phenotypes. The significant metabolites that were selected using statistical hypothesis testing of OS-PC loading facilitated biological interpretations that were consistent with the results of our previous study. Our results suggest that OS-PCA combined with statistical hypothesis testing of OS-PC loading is a useful method for the analysis of metabolome data.
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Affiliation(s)
- Hiroyuki Yamamoto
- Human Metabolome Technologies, Inc., 246-2 Mizukami, Kakuganji, Tsuruoka, Yamagata 997-0052, Japan
- Correspondence:
| | - Yasumune Nakayama
- Department of Applied Microbial Technology, Sojo University, 4-22-1 Ikeda, Kumamoto 860-0082, Japan;
| | - Hiroshi Tsugawa
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan;
- RIKEN Center for Integrative Medical Sciences, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
- Graduate School of Medical Life Science, Yokohama City University, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
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12
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Liu YS, Cheng YX, Wu D, Chen QL, Ying GG. Photo transformation of 5-methylbenzotriazole and 5-chlorobenzotriazole by UV irradiation: Influences of pH, salinity, metal species and humic acid. ENVIRONMENTAL RESEARCH 2021; 194:110678. [PMID: 33417911 DOI: 10.1016/j.envres.2020.110678] [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: 11/11/2020] [Revised: 12/17/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
5-methylbenzotriazole (5-TTri) and 5-chlorobenzotriazole (CBT) are two benzotriazole derivatives widely used in various industrial and domestic applications. This paper reports on the photochemical behaviour of 5-TTri and CBT in aqueous solutions under UV radiation at 254 nm and the influences of pH, salinity, metal species and humic acid (HA) on their photo-transformation processes. The photolysis of 5-TTri and CBT under the exposure to UV light were found to follow the first-order reaction kinetic in all cases with half-lives ranging from 7.1 h to 24.3 h for 5-TTri and 5.1 h-20.5 h for CBT in various aqueous solutions containing metal ions and HA. The photolysis rates for both 5-TTri and CBT were strongly dependent on the solution pH value, and decreased with increasing solution pH. Salinity, metal species Cu2+ and Fe3+, and especially HA had inhibitory effects on the photolysis of 5-TTri and CBT under UV light irradiation at 254 nm. We proposed the tentative photo transformation schemes for both 5-TTri and CBT, which involved two photoproducts (4-methylaniline and N, N-diethylaniline- p-toluidine) and three photoproducts (4-chloroaniline, Aniline and 2,6-diethylaniline), respectively, via N-N and N-NH bond scission and dechlorination process.
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Affiliation(s)
- You-Sheng Liu
- Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China.
| | - Yu-Xiao Cheng
- Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China
| | - Dan Wu
- Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China
| | - Quan-Le Chen
- Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China
| | - Guang-Guo Ying
- Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; School of Environment, South China Normal University, University Town, Guangzhou, 510006, China
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13
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Fujikawa M, Oshima H, Matsuoka H, Tamura H. Metabolomic analysis of garlic varieties revealed high cycloalliin content in fresh and black Kinkyou bulbs. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2021. [DOI: 10.3136/fstr.27.657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
| | - Hisaka Oshima
- Kagawa Prefectural Industrial Technology Research Center
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14
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Fu YQ, Wang JQ, Chen JX, Wang F, Yin JF, Zeng L, Shi J, Xu YQ. Effect of baking on the flavor stability of green tea beverages. Food Chem 2020; 331:127258. [DOI: 10.1016/j.foodchem.2020.127258] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 06/04/2020] [Accepted: 06/04/2020] [Indexed: 01/12/2023]
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15
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Fukuda T, Takamatsu K, Bamba T, Fukusaki E. Potato tuber metabolomics-based prediction of chip color quality and application using gas chromatography/flame ionization detector. Biosci Biotechnol Biochem 2020; 84:2193-2198. [PMID: 32674667 DOI: 10.1080/09168451.2020.1793656] [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: 10/23/2022]
Abstract
Potato (Solanum tuberosum L.) tubers are usually harvested once a year; thus, long-term storage is required to supply quality-assured tubers throughout the year. Further, an applicable method to predict tuber quality during storage is needed. In this study, gas chromatography-mass spectrometry (GC/MS) metabolomics was applied to identify applicable biomarkers for prediction of potato chip color based on 3 years' field-grown tubers. The projections to latent structures (PLS) prediction model, calculated from a metabolome data set obtained before storage, was consistent with actual measured chip color values. Additionally, GC with frame ionization detector (GC/FID) metabolite fingerprinting simultaneously re-constructed more reliable and relevant prediction models for chip color quality compared to GC/MS. Moreover, nine metabolites detected by GC/MS analysis were further validated as applicable prediction markers. This strategy will provide a practical and cost-effective quality-control tool for potato processing manufacturers on an industrial scale.
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Affiliation(s)
- Tomohiko Fukuda
- Agricultural Research Institute, Hokuren Federation of Agricultural Cooperatives , Sapporo, Japan
| | - Kiyofumi Takamatsu
- Agricultural Research Institute, Hokuren Federation of Agricultural Cooperatives , Sapporo, Japan
| | - Takeshi Bamba
- Department of Biotechnology, Graduate School of Engineering, Osaka University , Osaka, Japan.,Division of Metabolomics, Medical Institute of Bioregulation, Kyushu University , Fukuoka, Japan
| | - Eiichiro Fukusaki
- Department of Biotechnology, Graduate School of Engineering, Osaka University , Osaka, Japan
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16
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Makino Y, Nishizaka A, Yoshimura M, Sotome I, Kawai K, Akihiro T. Influence of low O 2 and high CO 2 environment on changes in metabolite concentrations in harvested vegetable soybeans. Food Chem 2020; 317:126380. [PMID: 32086120 DOI: 10.1016/j.foodchem.2020.126380] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 01/08/2020] [Accepted: 02/09/2020] [Indexed: 01/10/2023]
Abstract
Influence of atmosphere and storage period on the physicochemical and biological properties of harvested vegetable soybeans stored for 10 d at 25 °C was investigated. Storing vegetable soybeans under modified atmosphere (low O2 and high CO2), was more effective in maintaining its green color and mass than storing them under normoxia. Principal component 1 (PC1; contribution rate: 25%) was related to the atmospheres, whereas PC2 (contribution rate: 19%) was related to storage period. Cluster analysis showed that some types of sugars decreased, whereas some types of organic and amino acids increased with deterioration. Alanine, an indicator of low O2 stress, was maintained for 3 d under modified atmospheres, whereas alanine significantly decreased under normoxia. The concentrations of inositol and niacinamide (functional ingredients) under the modified atmospheres were significantly higher than those under normoxia. Thus, storage under modified atmospheres was effective in maintaining freshness and increasing the nutritional content of vegetable soybeans.
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Affiliation(s)
- Yoshio Makino
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
| | - Atsushi Nishizaka
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Masatoshi Yoshimura
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Itaru Sotome
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kenji Kawai
- BelleGreenWise Co., Ltd., Nagoya, Aichi, Japan
| | - Takashi Akihiro
- Faculty of Life and Environmental Science, Shimane University, Matsue, Shimane, Japan
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17
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Semi-targeted metabolomic analysis provides the basis for enhanced antioxidant capacities in pigmented rice grains. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2020. [DOI: 10.1007/s11694-019-00367-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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Yamana T, Taniguchi M, Nakahara T, Ito Y, Okochi N, Putri SP, Fukusaki E. Component Profiling of Soy-Sauce-Like Seasoning Produced from Different Raw Materials. Metabolites 2020; 10:metabo10040137. [PMID: 32244725 PMCID: PMC7240962 DOI: 10.3390/metabo10040137] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 11/19/2022] Open
Abstract
Soy sauce is a traditional Japanese umami seasoning commonly made from soybeans, wheat, and salt water. Soy-sauce-like seasoning, made from other raw materials, such as rice and peas, has recently been developed. However, differences in the taste of soy-sauce-like seasoning, depending on the raw materials, have not been evaluated. Component profiling based on GC/MS combined with a paired comparison test were used to investigate the effect of raw materials on seasoning components and umami taste in five grain-based and four bean-based soy-sauce-like seasonings. In a principal component (PC) analysis, grain-based samples and bean-based samples were separated along the PC1 axis (explaining 48.1% of the total variance). Grain-based samples had a higher saccharide content, and bean-based samples had a higher amino acid content. Furthermore, differences in the umami intensity were also observed among sample types. This is the first detailed metabolomics study of the characteristic compounds and umami of a variety of soy-sauce-like seasonings made from different raw materials.
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Affiliation(s)
- Tomoyuki Yamana
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan; (T.Y.); (M.T.); (S.P.P.)
| | - Moyu Taniguchi
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan; (T.Y.); (M.T.); (S.P.P.)
| | - Takeharu Nakahara
- Research and Development Division, Kikkoman Corporation, 338 Noda, Noda, Chiba 278-0037, Japan; (T.N.); (Y.I.); (N.O.)
| | - Yusuke Ito
- Research and Development Division, Kikkoman Corporation, 338 Noda, Noda, Chiba 278-0037, Japan; (T.N.); (Y.I.); (N.O.)
| | - Natsuki Okochi
- Research and Development Division, Kikkoman Corporation, 338 Noda, Noda, Chiba 278-0037, Japan; (T.N.); (Y.I.); (N.O.)
| | - Sastia Prama Putri
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan; (T.Y.); (M.T.); (S.P.P.)
| | - Eiichiro Fukusaki
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan; (T.Y.); (M.T.); (S.P.P.)
- Correspondence: ; Tel.: +81-6-6879-7424
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19
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Tong SR, Lee TH, Cheong SK, Lim YM. Untargeted metabolite profiling on the water-soluble metabolites of edible bird's nest through liquid chromatography-mass spectrometry. Vet World 2020; 13:304-316. [PMID: 32255973 PMCID: PMC7096308 DOI: 10.14202/vetworld.2020.304-316] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 01/07/2020] [Indexed: 01/25/2023] Open
Abstract
Background and Aim Edible bird's nest (EBN) is the nutrient-rich salivary bioproduct produced by swiftlets in Southeast Asia. Currently, researchers are exploring the therapeutic effects of EBN, such as cell growth promotion, antioxidant content, antiviral effects, bone strengthening, eyes care, and neuroprotection bioactivities. The therapeutic effects of EBN have been studied through different extraction methods but the metabolites profile of the EBN in each extract has not yet been elucidated. This study aimed to profile the water-soluble metabolites of EBN prepared in different extraction methods. Subsequently, an extraction method will be selected as an ideal extraction method for untargeted metabolite profiling on the water-soluble metabolites in EBN. Materials and Methods In this study, water-soluble metabolites of EBN extracted by the four extraction methods were subjected to metabolite profiling through liquid chromatography-mass spectrometry (LC-MS). The extraction methods were acid extraction(ABN), pancreatic extraction (EzBN), eHMG extraction, and spray drying of HMG extraction (pHMG). The metabolite profiles, such as the number of metabolites and their identities in each extraction method, were evaluated through LC-MS analysis. Results The identity of metabolites present in the four extraction methods is inconsistent. Based on LC-MS analysis, only one and six metabolites were extracted differently through EzBN and ABN, respectively, in the first pre-screening. Through the second LC-MS screening on pHMG and eHMG extraction methods, eHMG was selected as an ideal extraction method due to the highest numbers of water-soluble metabolites with an amount of 193 was detected. Besides, eHMG extraction method was able to extract sialic acid and a high percentage of secondary metabolites. Conclusion This study suggests that eHMG is the ideal extraction method for extracting higher number of water-soluble metabolites from EBN and could be further developed as an extraction method for industry application. In addition, this study also has identified the types of primary and secondary metabolites present in EBN.
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Affiliation(s)
- Shi-Ruo Tong
- Department of Pre-clinical Sciences, Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, 43000, Kajang, Cheras, Selangor, Malaysia
| | - Ting-Hun Lee
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Soon-Keng Cheong
- Department of Pre-clinical Sciences, Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, 43000, Kajang, Cheras, Selangor, Malaysia
| | - Yang-Mooi Lim
- Department of Pre-clinical Sciences, Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, 43000, Kajang, Cheras, Selangor, Malaysia.,Centre for Cancer Research, Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, 43000, Kajang, Cheras, Selangor, Malaysia
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20
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Kim SY, Kim SY, Lee SM, Lee DY, Shin BK, Kang DJ, Choi HK, Kim YS. Discrimination of Cultivated Regions of Soybeans ( Glycine max) Based on Multivariate Data Analysis of Volatile Metabolite Profiles. Molecules 2020; 25:E763. [PMID: 32050669 PMCID: PMC7036852 DOI: 10.3390/molecules25030763] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 01/31/2020] [Accepted: 02/06/2020] [Indexed: 01/20/2023] Open
Abstract
Soybean (Glycine max) is a major crop cultivated in various regions and consumed globally. The formation of volatile compounds in soybeans is influenced by the cultivar as well as environmental factors, such as the climate and soil in the cultivation areas. This study used gas chromatography-mass spectrometry (GC-MS) combined by headspace solid-phase microextraction (HS-SPME) to analyze the volatile compounds of soybeans cultivated in Korea, China, and North America. The multivariate data analysis of partial least square-discriminant analysis (PLS-DA), and hierarchical clustering analysis (HCA) were then applied to GC-MS data sets. The soybeans could be clearly discriminated according to their geographical origins on the PLS-DA score plot. In particular, 25 volatile compounds, including terpenes (limonene, myrcene), esters (ethyl hexanoate, butyl butanoate, butyl prop-2-enoate, butyl acetate, butyl propanoate), aldehydes (nonanal, heptanal, (E)-hex-2-enal, (E)-hept-2-enal, acetaldehyde) were main contributors to the discrimination of soybeans cultivated in China from those cultivated in other regions in the PLS-DA score plot. On the other hand, 15 volatile compounds, such as 2-ethylhexan-1-ol, 2,5-dimethylhexan-2-ol, octanal, and heptanal, were related to Korean soybeans located on the negative PLS 2 axis, whereas 12 volatile compounds, such as oct-1-en-3-ol, heptan-4-ol, butyl butanoate, and butyl acetate, were responsible for North American soybeans. However, the multivariate statistical analysis (PLS-DA) was not able to clearly distinguish soybeans cultivated in Korea, except for those from the Gyeonggi and Kyeongsangbuk provinces.
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Affiliation(s)
- So-Yeon Kim
- Department of Food Science and Engineering, Ewha Womans University, Seoul 03760, Korea; (S.-Y.K.); (S.Y.K.); (S.M.L.)
| | - So Young Kim
- Department of Food Science and Engineering, Ewha Womans University, Seoul 03760, Korea; (S.-Y.K.); (S.Y.K.); (S.M.L.)
| | - Sang Mi Lee
- Department of Food Science and Engineering, Ewha Womans University, Seoul 03760, Korea; (S.-Y.K.); (S.Y.K.); (S.M.L.)
| | - Do Yup Lee
- Department of Agricultural Biotechnology, Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul 08779, Korea;
| | - Byeung Kon Shin
- National Agricultural Products Quality Management Service, Gimcheon 39660, Korea; (B.K.S.); (D.J.K.)
| | - Dong Jin Kang
- National Agricultural Products Quality Management Service, Gimcheon 39660, Korea; (B.K.S.); (D.J.K.)
| | | | - Young-Suk Kim
- Department of Food Science and Engineering, Ewha Womans University, Seoul 03760, Korea; (S.-Y.K.); (S.Y.K.); (S.M.L.)
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21
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Dubey H, Rawal HC, Rohilla M, Lama U, Kumar PM, Bandyopadhyay T, Gogoi M, Singh NK, Mondal TK. TeaMiD: a comprehensive database of simple sequence repeat markers of tea. Database (Oxford) 2020; 2020:baaa013. [PMID: 32159215 PMCID: PMC7065459 DOI: 10.1093/database/baaa013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/05/2020] [Accepted: 01/25/2020] [Indexed: 12/05/2022]
Abstract
Tea is a highly cross-pollinated, woody, perennial tree. High heterozygosity combined with a long gestational period makes conventional breeding a cumbersome process. Therefore, marker-assisted breeding is a better alternative approach when compared with conventional breeding. Considering the large genome size of tea (~3 Gb), information about simple sequence repeat (SSR) is scanty. Thus, we have taken advantage of the recently published tea genomes to identify large numbers of SSR markers in the tea. Besides the genomic sequences, we identified SSRs from the other publicly available sequences such as RNA-seq, GSS, ESTs and organelle genomes (chloroplasts and mitochondrial) and also searched published literature to catalog validated set of tea SSR markers. The complete exercise yielded a total of 935 547 SSRs. Out of the total, 82 SSRs were selected for validation among a diverse set of tea genotypes. Six primers (each with four to six alleles, an average of five alleles per locus) out of the total 27 polymorphic primers were used for a diversity analysis in 36 tea genotypes with mean polymorphic information content of 0.61-0.76. Finally, using all the information generated in this study, we have developed a user-friendly database (TeaMiD; http://indianteagenome.in:8080/teamid/) that hosts SSR from all the six resources including three nuclear genomes of tea and transcriptome sequences of 17 Camellia wild species. Database URL: http://indianteagenome.in:8080/teamid/.
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Affiliation(s)
- Himanshu Dubey
- Indian Council Agricultural Research-National Institute for Plant Biotechnology, Lal Bahadur Sashtri Centre, Indian Agricultural Research Institute, Pusa, New Delhi 110012, India
| | - Hukam C Rawal
- Indian Council Agricultural Research-National Institute for Plant Biotechnology, Lal Bahadur Sashtri Centre, Indian Agricultural Research Institute, Pusa, New Delhi 110012, India
| | - Megha Rohilla
- Indian Council Agricultural Research-National Institute for Plant Biotechnology, Lal Bahadur Sashtri Centre, Indian Agricultural Research Institute, Pusa, New Delhi 110012, India
| | - Urvashi Lama
- Darjeeling Tea Research and Development Centre, Tea Board, Ministry of Commerce, B.T.M. Sarani (Brabourne Road), Kolkata, West Bengal 700001, India
| | - P Mohan Kumar
- Darjeeling Tea Research and Development Centre, Tea Board, Ministry of Commerce, B.T.M. Sarani (Brabourne Road), Kolkata, West Bengal 700001, India
| | - Tanoy Bandyopadhyay
- Department of Biotechnology, Tocklai Experimental Station, Tea Research Association, Jorhat, Assam, India
| | - Madhurjya Gogoi
- Department of Biotechnology, Tocklai Experimental Station, Tea Research Association, Jorhat, Assam, India
| | - Nagendra Kumar Singh
- Indian Council Agricultural Research-National Institute for Plant Biotechnology, Lal Bahadur Sashtri Centre, Indian Agricultural Research Institute, Pusa, New Delhi 110012, India
| | - Tapan Kumar Mondal
- Indian Council Agricultural Research-National Institute for Plant Biotechnology, Lal Bahadur Sashtri Centre, Indian Agricultural Research Institute, Pusa, New Delhi 110012, India
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22
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Zeng C, Lin H, Liu Z, Liu Z. Metabolomics analysis of Camellia sinensis with respect to harvesting time. Food Res Int 2019; 128:108814. [PMID: 31955770 DOI: 10.1016/j.foodres.2019.108814] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 11/09/2019] [Accepted: 11/10/2019] [Indexed: 02/07/2023]
Abstract
The metabolites of green tea influence its quality and physiological characteristics. Therefore, to further increase the utilization of green tea leaves, it is imperative to understand the distribution and variation of their secondary metabolites with respect to different harvesting times. This study compared the metabolomes of young leaves of 'Anji Baicha' between early spring tea and late spring tea in positive and negative ESI modes using UPLC-ESI-Q-TOF/MS. Potential biomarkers were selected by principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) of chemometrics methods. Results showed that the metabolic profiles of young leaves in early and late spring tea were significantly different. The metabolite-related pathways associated with these differences included those involved in biosynthesis of flavonoids, phenylpropanoids, flavone and flavonol, phenylalanine, tyrosine, and tryptophan. In early spring tea leaves, concentrations of amino acids (l-glutamine and l-tryptophan), (S)-(-)-limonene, most of the catechins, and flavonol/flavone glycosides were found to be significantly increased, while proanthocyanidins (proanthocyanidin A1, prodelphinidin A1, and prodelphinidin A2 3'-gallate) concentrations were significantly decreased. As a result of the metabolomics analysis of young leaves of green tea plants with respect to different harvesting time, information regarding physiological characteristics and optimal harvesting time was obtained.
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Affiliation(s)
- Chaozhen Zeng
- Hunan Provincial Key Laboratory of Forestry Biotechnology, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China; National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Changsha 410128, China; Key Laboratory of Education Ministry for Tea Science, Hunan Agricultural University, Changsha 410128, China; Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, Changsha 410128, China; Hunan Provincial Base for Scientific and Technological Innovation Cooperation, Changsha 410004, China
| | - Haiyan Lin
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Changsha 410128, China; Key Laboratory of Education Ministry for Tea Science, Hunan Agricultural University, Changsha 410128, China; Collaborative Innovation Center of Utilization of Functional Ingredients from Botanicals, Changsha 410128, China
| | - Zhixiang Liu
- Hunan Provincial Key Laboratory of Forestry Biotechnology, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Provincial Base for Scientific and Technological Innovation Cooperation, Changsha 410004, China
| | - Zhonghua Liu
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Changsha 410128, China; Key Laboratory of Education Ministry for Tea Science, Hunan Agricultural University, Changsha 410128, China; Collaborative Innovation Center of Utilization of Functional Ingredients from Botanicals, Changsha 410128, China; Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, Changsha 410128, China.
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Hano T, Tomaru Y. Metabolomics-based approach to explore growth phase-dependent markers in cultured diatom Chaetoceros tenuissimus. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1128:121779. [PMID: 31499295 DOI: 10.1016/j.jchromb.2019.121779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/17/2019] [Accepted: 08/26/2019] [Indexed: 01/21/2023]
Abstract
Chaetoceros tenuissimus is a cosmopolitan marine diatom whose metabolism has been little investigated. In this study, we examined the alterations of the metabolite profile between different growth phases (exponential and stationary phase) in cultured C. tenuissimus and identified growth phase-dependent candidate marker metabolite. First, the preparation methodology was optimized, focusing on extraction solvent. Metabolites of the cultured diatom (exponential phase 2.4 × 106 cells/mL, stationary phase 3.1 × 106 cells/mL) were extracted using two solvents with different constituents (solvent 1, methanol:H2O:chloroform = 5:2:2; solvent 2, methanol:ethanol:chloroform = 1:3:1). Gas chromatography mass spectrometry (GC/MS)-based metabolomics successfully detected 43 water-soluble metabolites in both solvents. The metabolic features were dependent on the growth phase: amino acid levels were higher in the exponential phase, whereas sugars and alcohols were more abundant in the stationary phase. Solvent 1 was superior in the recovery of the candidate metabolite that had a retention time of 18.13 min and predominantly contributed to discrimination between the growth phases; the metabolite level was higher in the stationary phase than in the exponential phase. The candidate metabolite was identified as mannonic acid by using GC/MS and liquid chromatography tandem mass spectrometry. Higher levels of mannonic acid during the stationary phase were also observed in other three diatom species. This study provides further insight into the use of metabolomics in the evaluation of physiological conditions of diatoms and suggests that mannonic acid content is a potential biomarker of the growth phase in cultured diatom cells.
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Affiliation(s)
- Takeshi Hano
- National Research Institute of Fisheries and Environment of Inland Sea, Fisheries Research and Education Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima 739-0452, Japan. http://feis.fra.affrc.go.jp/
| | - Yuji Tomaru
- National Research Institute of Fisheries and Environment of Inland Sea, Fisheries Research and Education Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima 739-0452, Japan
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24
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Esteki M, Shahsavari Z, Simal-Gandara J. Gas Chromatographic Fingerprinting Coupled to Chemometrics for Food Authentication. FOOD REVIEWS INTERNATIONAL 2019. [DOI: 10.1080/87559129.2019.1649691] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- M. Esteki
- Department of Chemistry, University of Zanjan, Zanjan, Iran
| | - Z. Shahsavari
- Department of Chemistry, University of Zanjan, Zanjan, Iran
| | - J. Simal-Gandara
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Food Science and Technology, University of Vigo – Ourense Campus, Ourense, Spain
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25
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Gas chromatography-mass spectrometry metabolomics-based prediction of potato tuber sprouting during long-term storage. J Biosci Bioeng 2019; 128:249-254. [DOI: 10.1016/j.jbiosc.2019.01.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 01/17/2019] [Accepted: 01/23/2019] [Indexed: 12/11/2022]
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26
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Yoshitomi T, Wakana D, Uchiyama N, Tsujimoto T, Kawano N, Yokokura T, Yamamoto Y, Fuchino H, Hakamatsuka T, Komatsu K, Kawahara N, Maruyama T. 1H NMR-based metabolomic analysis coupled with reversed-phase solid-phase extraction for sample preparation of Saposhnikovia roots and related crude drugs. J Nat Med 2019; 74:65-75. [PMID: 31342251 DOI: 10.1007/s11418-019-01343-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/27/2019] [Indexed: 11/29/2022]
Abstract
1H NMR-based metabolomics has been applied in research on food, herbal medicine, and natural products. Although excellent results were reported, samples were directly extracted with a deuterated solvent (e.g., methanol-d4 or D2O) in most reports. As primary metabolites account for most of the results, data for secondary metabolites are partially reflected. Consequently, secondary metabolites tend to be excluded from factor loading analysis, serving as a significant unfavorable feature of 1H NMR-based metabolomics when investigating biologically active or functional components in natural products and health foods. Reversed-phase solid-phase extraction column (RP-SPEC) was applied for sample preparation in 1H NMR-based metabolomics to overcome this feature. The methanol extract from Saposhnikoviae radix (SR), an important crude drug, was fractionated with RP-SPEC into 5% methanol-eluting fractions, and the remaining fraction was collected. Each fraction was subjected to 1H NMR-based metabolomics and compared to results from conventional 1H NMR-based metabolomics. Based on principal component analysis (PCA) and partial least squares projections to latent structures discriminant analysis (PLS-DA), the 5% methanol fraction and conventional method reflected the amount of saccharides such as sucrose on the PC1/PLS1 axes, and wild and cultivated samples were discriminated along those axes. The remaining fraction clearly distinguished SR from Peucedanum ledebourielloides root. The compounds responsible for this discrimination were deemed falcarindiol derivatives and other unidentified secondary metabolites from the s-plot on PLS-DA. The secondary metabolites from original plants were, therefore, presumed to be concentrated in the remaining fraction by RP-SPEC treatment and strongly reflected the species differences. The developed series is considered effective to perform quality evaluation of crude drugs and natural products.
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Affiliation(s)
- Taichi Yoshitomi
- Division of Pharmacognosy, Phytochemistry and Narcotics, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Daigo Wakana
- Faculty of Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Nahoko Uchiyama
- Division of Pharmacognosy, Phytochemistry and Narcotics, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Takashi Tsujimoto
- Division of Pharmacognosy, Phytochemistry and Narcotics, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Noriaki Kawano
- National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki, 305-0843, Japan
| | - Tsuguo Yokokura
- Nippon Funmatsu Yakuhin Co., Ltd, 71-3 Izumicho, Yao, Osaka, 581-0813, Japan
| | - Yutaka Yamamoto
- Tochimoto Tenkaido Co., Ltd, Oniya Kaibara-cho, Tamba, Hyōgo, 669-3315, Japan
| | - Hiroyuki Fuchino
- National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki, 305-0843, Japan
| | - Takashi Hakamatsuka
- Division of Pharmacognosy, Phytochemistry and Narcotics, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Katsuko Komatsu
- Department of Medicinal Resources, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Nobuo Kawahara
- National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki, 305-0843, Japan
| | - Takuro Maruyama
- Division of Pharmacognosy, Phytochemistry and Narcotics, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan.
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Characterisation of key odourants in Japanese green tea using gas chromatography-olfactometry and gas chromatography-mass spectrometry. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.03.054] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Yokota Y, Akihiro T, Boerzhijin S, Yamada T, Makino Y. Effect of the storage atmosphere on metabolomics of harvested tomatoes ( Solanum lycopersicum L.). Food Sci Nutr 2019; 7:773-778. [PMID: 30847156 PMCID: PMC6392880 DOI: 10.1002/fsn3.923] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 12/03/2018] [Accepted: 12/05/2018] [Indexed: 11/26/2022] Open
Abstract
Harvested tomatoes were stored under atmospheres that were normoxic, anoxic, or modified (altered O2 and CO2 concentrations). Each atmosphere was created by storing the tomatoes at 25°C for up to 8 days in different kinds of pouches. During storage, metabolites of the tomatoes were measured using metabolomics. We obtained score plots of the metabolites on eighth day of storage by principal component analysis. There was a tendency for groups to be divided on the basis of score plot according to the composition of each gas. PC1 and PC2 seemed to correspond to the influence of O2 and CO2 concentrations, respectively, and the total contribution rate of the two axes was 72%, so that we concluded that the metabolites were affected mainly by O2 and CO2 concentrations. The results indicate that metabolomics may be an effective tool to reveal the relationship between metabolic state of harvested fruits and the atmosphere.
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Affiliation(s)
- Yuma Yokota
- Graduate School of Agricultural and Life SciencesThe University of TokyoBunkyo‐kuTokyoJapan
| | - Takashi Akihiro
- Faculty of Life and Environmental ScienceShimane UniversityMatsue CityShimaneJapan
| | - Surina Boerzhijin
- Graduate School of Agricultural and Life SciencesThe University of TokyoBunkyo‐kuTokyoJapan
| | - Takeshi Yamada
- Department of P‐plus ProjectSumitomo Bakelite Co. Ltd.Shinagawa‐kuTokyoJapan
| | - Yoshio Makino
- Graduate School of Agricultural and Life SciencesThe University of TokyoBunkyo‐kuTokyoJapan
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Quirós-Guerrero L, Albertazzi F, Araya-Valverde E, Romero RM, Villalobos H, Poveda L, Chavarría M, Tamayo-Castillo G. Phenolic variation among Chamaecrista nictitans subspecies and varieties revealed through UPLC-ESI(-)-MS/MS chemical fingerprinting. Metabolomics 2019; 15:14. [PMID: 30830463 DOI: 10.1007/s11306-019-1475-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 01/11/2019] [Indexed: 10/27/2022]
Abstract
INTRODUCTION Comparative analysis of metabolic features of plants has a high potential for determination of quality control of active ingredients, ecological or chemotaxonomic purposes. Specifically, the development of efficient and rapid analytical tools that allow the differentiation among species, subspecies and varieties of plants is a relevant issue. Here we describe a multivariate model based on LC-MS/MS fingerprinting capable of discriminating between subspecies and varieties of the medicinal plant Chamaecrista nictitans, a rare distributed species in Costa Rica. METHODS Determination of the chemical fingerprint was carried out on a LC-MS (ESI-QTOF) in negative ionization mode, main detected and putatively identified compounds included proanthocyanidin oligomers, several flavonoid C- and O-glycosides, and flavonoid acetates. Principal component analysis (PCA), partial least square-discriminant analysis (PLS-DA) and cluster analysis of chemical profiles were performed. RESULTS Our method showed a clear discrimination between the subspecies and varieties of Chamaecrista nictitans, separating the samples into four fair differentiated groups: M1 = C. nictitans ssp. patellaria; M2 = C. nictitans ssp. disadena; M3 = C. nictitans ssp. nictitans var. jaliscensis and M4 = C. nictitans ssp. disadena var. pilosa. LC-MS/MS fingerprint data was validated using both morphological characters and DNA barcoding with ITS2 region. The comparison of the morphological characters against the chemical profiles and DNA barcoding shows a 63% coincidence, evidencing the morphological similarity in C. nictitans. On the other hand, genetic data and chemical profiles grouped all samples in a similar pattern, validating the functionality of our metabolomic approach. CONCLUSION The metabolomic method described in this study allows a reliably differentiation between subspecies and varieties of C. nictitans using a straightforward protocol that lacks extensive purification steps.
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Affiliation(s)
- Luis Quirós-Guerrero
- Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San Jose, 11501-2060, Costa Rica
- Escuela de Química, Universidad de Costa Rica, Sede Central, San Pedro de Montes de Oca, San Jose, 11501-2060, Costa Rica
| | - Federico Albertazzi
- Centro de Investigación en Biología Celular y Molecular (CIBCM), Universidad de Costa Rica, San Jose, 11501-2060, Costa Rica
- Escuela de Biología, Universidad de Costa Rica, San Jose, 11501-2060, Costa Rica
| | - Emanuel Araya-Valverde
- Centro Nacional de Innovaciones Biotecnológicas (CENiBiot), CeNAT-CONARE, San Jose, 1174-1200, Costa Rica
- Escuela de Biología, Instituto Tecnológico de Costa Rica, Cartago, 159-7050, Costa Rica
| | - Rosaura M Romero
- Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San Jose, 11501-2060, Costa Rica
- Escuela de Química, Universidad de Costa Rica, Sede Central, San Pedro de Montes de Oca, San Jose, 11501-2060, Costa Rica
| | - Heidy Villalobos
- Escuela de Química, Universidad de Costa Rica, Sede Central, San Pedro de Montes de Oca, San Jose, 11501-2060, Costa Rica
- Centro de Investigación en Biología Celular y Molecular (CIBCM), Universidad de Costa Rica, San Jose, 11501-2060, Costa Rica
| | - Luis Poveda
- Herbario Juvenal Valerio Rodríguez, Universidad Nacional, Heredia, Costa Rica
| | - Max Chavarría
- Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San Jose, 11501-2060, Costa Rica
- Escuela de Química, Universidad de Costa Rica, Sede Central, San Pedro de Montes de Oca, San Jose, 11501-2060, Costa Rica
- Centro Nacional de Innovaciones Biotecnológicas (CENiBiot), CeNAT-CONARE, San Jose, 1174-1200, Costa Rica
| | - Giselle Tamayo-Castillo
- Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San Jose, 11501-2060, Costa Rica.
- Escuela de Química, Universidad de Costa Rica, Sede Central, San Pedro de Montes de Oca, San Jose, 11501-2060, Costa Rica.
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Understanding Camellia sinensis using Omics Technologies along with Endophytic Bacteria and Environmental Roles on Metabolism: A Review. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9020281] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Camellia sinensis is the most consumed beverage worldwide. It contains a wide variety of secondary metabolites, such as alkaloids, saponins, tannins, catechins, and polyphenols, generated through a condensation reaction of cinnamic acid with three malonyl-CoA groups. In addition to the metabolic processes occurring within this plant, there are also some plant-associated bacterial endophytes. These bacteria reside in the living tissues of the host plants without causing any harmful effect to them, thereby stimulating secondary metabolite production with a diverse range of biological effects. Omics technologies reveal understanding of the biological phenomena of transcriptomics, proteomics, and metabolomics. In this sense, the present review aims to provide a comprehensive review of various methods used to identify distinct plant compounds, namely transcriptomic, proteomic, and metabolomic analysis. The role of endophytic bacteria in C. sinensis metabolism, and C. sinensis antioxidant and antimicrobial effects, are also carefully highlighted.
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31
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A review on the application of chromatographic methods, coupled to chemometrics, for food authentication. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.06.015] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Miyagawa H, Bamba T. Comparison of sequential derivatization with concurrent methods for GC/MS-based metabolomics. J Biosci Bioeng 2018; 127:160-168. [PMID: 30316697 DOI: 10.1016/j.jbiosc.2018.07.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 06/17/2018] [Accepted: 07/16/2018] [Indexed: 11/16/2022]
Abstract
The gas chromatography/mass spectrometry (GC/MS)-based metabolomics requires a two-step derivatization procedure consisting of oximation and silylation. However, due to the incomplete derivatization and degeneration of the metabolites, good repeatability is difficult to obtain during the batch derivatization, as the time between completing the derivatization process and GC analysis differs from sample to sample. In this research, we successfully obtained good repeatability for the peak areas of 52 selected metabolites by sequential derivatization and interval injection, in which the oximation and silylation times were maintained at constant values. In addition, the derivatization times and amount of reagents employed were varied to confirm that the optimal derivatization conditions differed for the various metabolites. In conventional batch derivatization, six metabolites, viz. glutamine, glutamic acid, histidine, alanine, asparagine, and tryptophan, exhibited fluctuations in their peak areas. Indeed, we found that for all six metabolites these differences originated from the silylation process, while the variations for glutamine and glutamic acid were related to the oximation process.
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Affiliation(s)
- Hiromi Miyagawa
- GL Sciences Inc., 237-2 Sayamagahara, Iruma, Saitama 358-0032, Japan
| | - Takeshi Bamba
- Research Center for Transomics Medicine, Medical Institute of Bioregulation, Kyusyu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
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Ishizaka K, Lewis SR, Hammond D, Lewis R. Chemistry of black leaf films synthesised using rail steels and their influence on the low friction mechanism. RSC Adv 2018; 8:32506-32521. [PMID: 35547698 PMCID: PMC9086331 DOI: 10.1039/c8ra06080k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 09/12/2018] [Indexed: 11/28/2022] Open
Abstract
Fallen leaves are the main issues for train operations in the autumn season due to their low friction coefficient (COF), leading to signals being passed dangerously and amended timetables. The main aim of this study was to elucidate the mechanism of low friction due to black leaf films, which are often seen on leaf-contaminated rails. A black material was successfully synthesised in the laboratory with water extracts from sycamore leaves and a plate of R260 rail steel. The black powder made from the extracts of brown leaves (BBP) was identified as the key material of low friction by the pin-on-flat tribological test, giving a COF between 0.08 and 0.14, which was lower than the COF of commercial engine oil (approximately 0.14). X-Ray fluorescence showed that the black material was a mixture of iron and leaf-organics. Laser Raman spectroscopy revealed that graphite-like carbon was likely to be formed on iron oxides. Fourier transform infrared spectroscopy showed that the formation of iron carboxylate was likely in bulk, which possibly transformed into iron oxides on the surface. Moreover, X-ray photoelectron spectroscopy detected a relatively high concentration of phosphates only in BBP. Hence, the low friction is presumably due to graphitic carbon, iron oxides and phosphate compounds in the black leaf films, as well as mechanical separation effects of bulk leaves. This black material could be a product of the Maillard reaction or reaction between iron and organic acids, such as tannic acids. Graphite-like carbon was found to be formed by leaf organics and rail steels, causing low friction between wheels and rails.![]()
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Affiliation(s)
- Kei Ishizaka
- Department of Mechanical Engineering, The University of Sheffield Mappin Street Sheffield S1 3JD UK +44(0) 114 222 7890 +44(0) 114 222 7838.,East Japan Railway Company 2-2-2 Yoyogi, Shibuya-ku Tokyo 151-0053 Japan
| | - Stephen R Lewis
- Department of Mechanical Engineering, The University of Sheffield Mappin Street Sheffield S1 3JD UK +44(0) 114 222 7890 +44(0) 114 222 7838.,British Steel, Scunthorpe Rail and Section Mill Brigg Road, Scunthorpe DN16 1BP UK
| | - Deborah Hammond
- Sheffield Surface Analysis Centre, Department of Chemistry, The University of Sheffield Dainton Building, Brook Hill Sheffield S3 7HF UK
| | - Roger Lewis
- Department of Mechanical Engineering, The University of Sheffield Mappin Street Sheffield S1 3JD UK +44(0) 114 222 7890 +44(0) 114 222 7838
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Bressanello D, Liberto E, Cordero C, Sgorbini B, Rubiolo P, Pellegrino G, Ruosi MR, Bicchi C. Chemometric Modeling of Coffee Sensory Notes through Their Chemical Signatures: Potential and Limits in Defining an Analytical Tool for Quality Control. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7096-7109. [PMID: 29895143 DOI: 10.1021/acs.jafc.8b01340] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Aroma is a primary hedonic aspect of a good coffee. Coffee aroma quality is generally defined by cup tasting, which however is time-consuming in terms of panel training and alignment and too subjective. It is challenging to define a relationship between chemical profile and aroma sensory impact, but it might provide an objective evaluation of industrial products. This study aimed to define the chemical signature of coffee sensory notes, to develop prediction models based on analytical measurements for use at the control level. In particular, the sensory profile was linked with the chemical composition defined by HS-SPME-GC-MS, using a chemometric-driven approach. The strategy was found to be discriminative and informative, identifying aroma compounds characteristic of the selected sensory notes. The predictive ability in defining the sensory scores of each aroma note was used as a validation tool for the chemical signatures characterized. The most reliable models were those obtained for woody, bitter, and acidic properties, whose selected volatiles reliably represented the sensory note fingerprints. Prediction models could be exploited in quality control, but compromises must be determined if they are to become complementary to panel tasting.
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Affiliation(s)
- Davide Bressanello
- Dipartimento di Scienza e Tecnologia del Farmaco , Università degli Studi di Torino , Via Pietro Giuria 9 , 10125 Torino , Italy
| | - Erica Liberto
- Dipartimento di Scienza e Tecnologia del Farmaco , Università degli Studi di Torino , Via Pietro Giuria 9 , 10125 Torino , Italy
| | - Chiara Cordero
- Dipartimento di Scienza e Tecnologia del Farmaco , Università degli Studi di Torino , Via Pietro Giuria 9 , 10125 Torino , Italy
| | - Barbara Sgorbini
- Dipartimento di Scienza e Tecnologia del Farmaco , Università degli Studi di Torino , Via Pietro Giuria 9 , 10125 Torino , Italy
| | - Patrizia Rubiolo
- Dipartimento di Scienza e Tecnologia del Farmaco , Università degli Studi di Torino , Via Pietro Giuria 9 , 10125 Torino , Italy
| | | | | | - Carlo Bicchi
- Dipartimento di Scienza e Tecnologia del Farmaco , Università degli Studi di Torino , Via Pietro Giuria 9 , 10125 Torino , Italy
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Mabuchi R, Adachi M, Kikutani H, Tanimoto S. Discriminant Analysis of Muscle Tissue Type in Yellowtail Seriola Quinqueradiata Muscle Based on Metabolic Component Profiles. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2018. [DOI: 10.3136/fstr.24.883] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Ryota Mabuchi
- Faculty of Human Culture and Science Prefectural University of Hiroshima
| | - Miwako Adachi
- Faculty of Human Culture and Science Prefectural University of Hiroshima
| | - Haruka Kikutani
- Faculty of Human Culture and Science Prefectural University of Hiroshima
| | - Shota Tanimoto
- Faculty of Human Culture and Science Prefectural University of Hiroshima
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Sasaki T, Tanase Y, Yonezawa T, Michihata T, Kawamura-Konishi Y. Metabolomics Profiling of Roasted Stem Tea Using Gas Chromatography-Mass Spectrometry and a Sensory Test. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2018. [DOI: 10.3136/fstr.24.1059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Tetsuya Sasaki
- Chemistry/Food Department, Industrial Research Institute of Ishikawa
| | - Yuuki Tanase
- Department of Food Science, Ishikawa Prefectural University
| | | | | | - Yasuko Kawamura-Konishi
- Department of Food Science, Ishikawa Prefectural University
- Faculty of Food and Nutrition, Department of Home Economics, Tokyo Kasei University
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37
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Mabuchi R, Zhao H, Tanimoto S. Effect of Heat Processing on the Constituent Profile of Lemon Juice. J JPN SOC FOOD SCI 2018. [DOI: 10.3136/nskkk.65.183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Ryota Mabuchi
- Faculty of Human Culture and Science, Prefectural University of Hiroshima
| | - Huiqing Zhao
- Department of Human Culture and Science, Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima
| | - Shota Tanimoto
- Faculty of Human Culture and Science, Prefectural University of Hiroshima
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Lee KM, Jeon JY, Lee BJ, Lee H, Choi HK. Application of Metabolomics to Quality Control of Natural Product Derived Medicines. Biomol Ther (Seoul) 2017; 25:559-568. [PMID: 28605829 PMCID: PMC5685424 DOI: 10.4062/biomolther.2016.249] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 03/21/2017] [Accepted: 03/30/2017] [Indexed: 11/21/2022] Open
Abstract
Metabolomics has been used as a powerful tool for the analysis and quality assessment of the natural product (NP)-derived medicines. It is increasingly being used in the quality control and standardization of NP-derived medicines because they are composed of hundreds of natural compounds. The most common techniques that are used in metabolomics consist of NMR, GC-MS, and LC-MS in combination with multivariate statistical analyses including principal components analysis (PCA) and partial least squares-discriminant analysis (PLS-DA). Currently, the quality control of the NP-derived medicines is usually conducted using HPLC and is specified by one or two indicators. To create a superior quality control framework and avoid adulterated drugs, it is necessary to be able to determine and establish standards based on multiple ingredients using metabolic profiling and fingerprinting. Therefore, the application of various analytical tools in the quality control of NP-derived medicines forms the major part of this review. Veregen® (Medigene AG, Planegg/Martinsried, Germany), which is the first botanical prescription drug approved by US Food and Drug Administration, is reviewed as an example that will hopefully provide future directions and perspectives on metabolomics technologies available for the quality control of NP-derived medicines.
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Affiliation(s)
- Kyung-Min Lee
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jun-Yeong Jeon
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Byeong-Ju Lee
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hwanhui Lee
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hyung-Kyoon Choi
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
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Fujimura Y, Miura D, Tachibana H. A Phytochemical-Sensing Strategy Based on Mass Spectrometry Imaging and Metabolic Profiling for Understanding the Functionality of the Medicinal Herb Green Tea. Molecules 2017; 22:molecules22101621. [PMID: 28953237 PMCID: PMC6151411 DOI: 10.3390/molecules22101621] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 09/25/2017] [Accepted: 09/25/2017] [Indexed: 11/25/2022] Open
Abstract
Low-molecular-weight phytochemicals have health benefits and reduce the risk of diseases, but the mechanisms underlying their activities have remained elusive because of the lack of a methodology that can easily visualize the exact behavior of such small molecules. Recently, we developed an in situ label-free imaging technique, called mass spectrometry imaging, for visualizing spatially-resolved biotransformations based on simultaneous mapping of the major bioactive green tea polyphenol and its phase II metabolites. In addition, we established a mass spectrometry-based metabolic profiling technique capable of evaluating the bioactivities of diverse green tea extracts, which contain multiple phytochemicals, by focusing on their compositional balances. This methodology allowed us to simultaneously evaluate the relative contributions of the multiple compounds present in a multicomponent system to its bioactivity. This review highlights small molecule-sensing techniques for visualizing the complex behaviors of herbal components and linking such information to an enhanced understanding of the functionalities of multicomponent medicinal herbs.
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Affiliation(s)
- Yoshinori Fujimura
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Daisuke Miura
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Hirofumi Tachibana
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
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Lee TH, Wani WA, Koay YS, Kavita S, Tan ETT, Shreaz S. Recent advances in the identification and authentication methods of edible bird's nest. Food Res Int 2017; 100:14-27. [PMID: 28873672 DOI: 10.1016/j.foodres.2017.07.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/12/2017] [Accepted: 07/16/2017] [Indexed: 12/23/2022]
Abstract
Edible bird's nest (EBN) is an expensive animal bioproduct due to its reputation as a food and delicacy with diverse medicinal properties. One kilogram of EBN costs ~$6000 in China. EBN and its products are consumed in mostly Asian countries such as China, Hong Kong, Taiwan, Singapore, Malaysia, Indonesia, Vietnam and Thailand, making up almost 1/3 of world population. The rapid growth in EBN consumption has led to a big rise in the trade scale of its global market. Presently, various fake materials such as tremella fungus, pork skin, karaya gum, fish swimming bladder, jelly, agar, monosodium glutamate and egg white are used to adulterate EBNs for earning extra profits. Adulterated or fake EBN may be hazardous to the consumers. Thus, it is necessary to identify of the adulterants. Several sophisticated techniques based on genetics, immunochemistry, spectroscopy, chromatography and gel electrophoresis have been used for the detection of various types of adulterants in EBN. This article describes the recent advances in the authentication methods for EBN. Different genetic, immunochemical, spectroscopic and analytical methods such as genetics (DNA) based techniques, enzyme-linked immunosorbent assays, Fourier transform infrared and Raman spectroscopic techniques, and chromatographic and gel electrophoretic methods have been discussed. Besides, significance of the reported methods that might pertain them to applications in EBN industry has been described. Finally, efforts have been made to discuss the challenges and future perspectives of the authentication methods for EBN.
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Affiliation(s)
- Ting Hun Lee
- Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia.
| | - Waseem A Wani
- Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia
| | - Yin Shin Koay
- Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia
| | - Supparmaniam Kavita
- Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia
| | - Eddie Ti Tjih Tan
- Food Technology Programme, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Sheikh Shreaz
- Environment and Life Sciences Research Centre, Kuwait Institute for Scientific Research, P.O. Box 24885, 13109 Safat, Kuwait
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Miyauchi S, Yonetani T, Yuki T, Tomio A, Bamba T, Fukusaki E. Quality evaluation of green tea leaf cultured under artificial light condition using gas chromatography/mass spectrometry. J Biosci Bioeng 2017; 123:197-202. [DOI: 10.1016/j.jbiosc.2016.07.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 07/25/2016] [Accepted: 07/25/2016] [Indexed: 11/16/2022]
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Development of a New Three-Dimensional Fluorescence Spectroscopy Method Coupling with Multilinear Pattern Recognition to Discriminate the Variety and Grade of Green Tea. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0798-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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43
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Jing J, Shi Y, Zhang Q, Wang J, Ruan J. Prediction of Chinese green tea ranking by metabolite profiling using ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS). Food Chem 2016; 221:311-316. [PMID: 27979208 DOI: 10.1016/j.foodchem.2016.10.068] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 08/24/2016] [Accepted: 10/16/2016] [Indexed: 01/09/2023]
Abstract
Metabolomics profiling provides comprehensive picture of the chemical composition in teas therefore may be used to assess tea quality objectively and reliably. In the present experiment, water and methanol extracts of green teas from China were analyzed by ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS) with the objectives to establish a model for quality prediction and to identify potential marker metabolites. The blindly evaluated sensory score of green teas was predicted with excellent power (R2=0.87 and Q2=0.82) and accuracy (RMSEP=1.36) by a partial least-squares (PLS) regression model based on water extract. By contrast, methanol extract failed to reasonably predict the sensory scores. The levels in water extract of neotheaflavin, neotheaflavin 3-O-gallate, trigalloyl-β-d-glucopyranose, myricetin 3,3'-digalactoside, catechin-(4α→8)-epigallocatechin and kaempferol were significantly larger whereas those of theogallin and gallocatechin were less in the low (score<87) than in the high score (⩾90) group.
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Affiliation(s)
- Jin Jing
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310018, China.
| | - Yuanzhi Shi
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310018, China; Key Laboratory for Plant Biology and Resource Application of Tea, The Ministry of Agriculture, China.
| | - Qunfeng Zhang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310018, China; Key Laboratory for Plant Biology and Resource Application of Tea, The Ministry of Agriculture, China.
| | - Jie Wang
- Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310018, China.
| | - Jianyun Ruan
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310018, China; Key Laboratory for Plant Biology and Resource Application of Tea, The Ministry of Agriculture, China.
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Han P, Huang Y, Hylands PJ, Legido-Quigley C. Assessment ofPolygonum capitatumBuch.-Ham. ex D.Don by metabolomics based on gas chromatography with mass spectrometry. J Sep Sci 2016; 39:1979-86. [DOI: 10.1002/jssc.201501331] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 02/03/2016] [Accepted: 03/04/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Pei Han
- Institute of Pharmaceutical Science, Faculty of Life Sciences and Medicine; King's College London; London UK
| | - Yong Huang
- Institute of Pharmaceutical Science, Faculty of Life Sciences and Medicine; King's College London; London UK
- Provincial Key Laboratory of Pharmaceutics in Guizhou Province, School of Pharmacy; Guiyang Medical University; Guiyang China
| | - Peter J. Hylands
- Institute of Pharmaceutical Science, Faculty of Life Sciences and Medicine; King's College London; London UK
| | - Cristina Legido-Quigley
- Institute of Pharmaceutical Science, Faculty of Life Sciences and Medicine; King's College London; London UK
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Bizuayehu D, Atlabachew M, Ali MT. Determination of some selected secondary metabolites and their invitro antioxidant activity in commercially available Ethiopian tea (Camellia sinensis). SPRINGERPLUS 2016; 5:412. [PMID: 27069832 PMCID: PMC4821845 DOI: 10.1186/s40064-016-2056-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/24/2016] [Indexed: 11/10/2022]
Abstract
Eight brands of tea (Camellia sinensis),which are cultivated and commercially available in Ethiopian market, were analyzed for estimation of their total secondary metabolites (polyphenols, flavonoids and tannins) content and free radical scavenging activity which is expressed on dry weight basis. In this present study, the total polyphenols, tannin and flavonoid contents were studied spectrophotometrically using Folin-Dennis, Folin-Dennis/protein precipitation and aluminium chloride methods respectively. The free radical scavenging activity was determined by using DPPH radical assay. Results of the analysis revealed that the total polyphenol content varied from 21.3 ± 0.24 to 31.6 ± 0.31 mg of gallic acid equivalent/g of dry matter. Total flavonoids content in the tea samples varied from 8.17 ± 0.68 to 23.2 ± 0.68 mg of catechin equivalent/g of dry weight and tannin content varied from 5.64 ± 0.39 7.45 ± 0.27 mg tannic acid equivalent/g of dry weight basis. The free radical scavenging activity among the tea brand samples ranged from 28.8 ± 1.86 to 80.0 ± 0.63 mg ascorbic acid equivalent/g and the half maximal inhibitory concentration (IC50%) values varied from 7.3 ± 1.35 to 64.0 ± 2.81 µg/mL of extract. The correlation between the antioxidant activity with total polyphenol content (R = 0.91325), with flavonoids (R = 0.80658) and with tannin (R = 0.73125) was calculated and maximum correlation value was found between polyphenol content and the free radical scavenging activity of the tea samples. The results in this study also revealed that green tea had the higher polyphenolic content and found to have the most promising antioxidant activity. This study further confirmed that Ethiopia tea is reach in phenolic compounds as compared to some overseas tea cultivars/varieties.
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Affiliation(s)
- Dereje Bizuayehu
- Department of Chemistry, Faculty of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
| | - Minaleshewa Atlabachew
- Department of Chemistry, Faculty of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
| | - Mirtachew Tihar Ali
- Department of Chemistry, Faculty of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
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Cuadros-Rodríguez L, Ruiz-Samblás C, Valverde-Som L, Pérez-Castaño E, González-Casado A. Chromatographic fingerprinting: An innovative approach for food 'identitation' and food authentication – A tutorial. Anal Chim Acta 2016; 909:9-23. [DOI: 10.1016/j.aca.2015.12.042] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 12/17/2015] [Accepted: 12/30/2015] [Indexed: 01/09/2023]
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47
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Sumitani H, Otsuka T, Ogi K. Identification of Characteristic Quality Determinants of Commercial Citrus Juice Beverages by Metabolic Profiling. J JPN SOC FOOD SCI 2016. [DOI: 10.3136/nskkk.63.415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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48
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Guirimand G, Sasaki K, Inokuma K, Bamba T, Hasunuma T, Kondo A. Cell surface engineering of Saccharomyces cerevisiae combined with membrane separation technology for xylitol production from rice straw hydrolysate. Appl Microbiol Biotechnol 2015; 100:3477-87. [PMID: 26631184 DOI: 10.1007/s00253-015-7179-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 11/11/2015] [Accepted: 11/13/2015] [Indexed: 01/02/2023]
Abstract
Xylitol, a value-added polyol deriving from D-xylose, is widely used in both the food and pharmaceutical industries. Despite extensive studies aiming to streamline the production of xylitol, the manufacturing cost of this product remains high while demand is constantly growing worldwide. Biotechnological production of xylitol from lignocellulosic waste may constitute an advantageous and sustainable option to address this issue. However, to date, there have been few reports of biomass conversion to xylitol. In the present study, xylitol was directly produced from rice straw hydrolysate using a recombinant Saccharomyces cerevisiae YPH499 strain expressing cytosolic xylose reductase (XR), along with β-glucosidase (BGL), xylosidase (XYL), and xylanase (XYN) enzymes (co-)displayed on the cell surface; xylitol production by this strain did not require addition of any commercial enzymes. All of these enzymes contributed to the consolidated bioprocessing (CBP) of the lignocellulosic hydrolysate to xylitol to produce 5.8 g/L xylitol with 79.5 % of theoretical yield from xylose contained in the biomass. Furthermore, nanofiltration of the rice straw hydrolysate provided removal of fermentation inhibitors while simultaneously increasing sugar concentrations, facilitating high concentration xylitol production (37.9 g/L) in the CBP. This study is the first report (to our knowledge) of the combination of cell surface engineering approach and membrane separation technology for xylitol production, which could be extended to further industrial applications.
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Affiliation(s)
- Gregory Guirimand
- Organization of Advanced Science and Technology, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
| | - Kengo Sasaki
- Organization of Advanced Science and Technology, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
| | - Kentaro Inokuma
- Organization of Advanced Science and Technology, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
| | - Takahiro Bamba
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
| | - Tomohisa Hasunuma
- Organization of Advanced Science and Technology, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
| | - Akihiko Kondo
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan. .,Biomass Engineering Program, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan.
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Kim TJ, Lee KB, Baek SA, Choi J, Ha SH, Lim SH, Park SY, Yeo Y, Park SU, Kim JK. Determination of lipophilic metabolites for species discrimination and quality assessment of nine leafy vegetables. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/s13765-015-0119-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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50
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Teoh ST, Putri S, Mukai Y, Bamba T, Fukusaki E. A metabolomics-based strategy for identification of gene targets for phenotype improvement and its application to 1-butanol tolerance in Saccharomyces cerevisiae. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:144. [PMID: 26379776 PMCID: PMC4570087 DOI: 10.1186/s13068-015-0330-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 08/28/2015] [Indexed: 05/23/2023]
Abstract
BACKGROUND Traditional approaches to phenotype improvement include rational selection of genes for modification, and probability-driven processes such as laboratory evolution or random mutagenesis. A promising middle-ground approach is semi-rational engineering, where genetic modification targets are inferred from system-wide comparison of strains. Here, we have applied a metabolomics-based, semi-rational strategy of phenotype improvement to 1-butanol tolerance in Saccharomyces cerevisiae. RESULTS Nineteen yeast single-deletion mutant strains with varying growth rates under 1-butanol stress were subjected to non-targeted metabolome analysis by GC/MS, and a regression model was constructed using metabolite peak intensities as predictors and stress growth rates as the response. From this model, metabolites positively and negatively correlated with growth rate were identified including threonine and citric acid. Based on the assumption that these metabolites were linked to 1-butanol tolerance, new deletion strains accumulating higher threonine or lower citric acid were selected and subjected to tolerance measurement and metabolome analysis. The new strains exhibiting the predicted changes in metabolite levels also displayed significantly higher growth rate under stress over the control strain, thus validating the link between these metabolites and 1-butanol tolerance. CONCLUSIONS A strategy for semi-rational phenotype improvement using metabolomics was proposed and applied to the 1-butanol tolerance of S. cerevisiae. Metabolites correlated with growth rate under 1-butanol stress were identified, and new mutant strains showing higher growth rate under stress could be selected based on these metabolites. The results demonstrate the potential of metabolomics in semi-rational strain engineering.
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Affiliation(s)
- Shao Thing Teoh
- />Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Sastia Putri
- />Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Yukio Mukai
- />Department of Bioscience, Nagahama Institute of Bio-Science and Technology, 1266 Tamura, Nagahama, Shiga 526-0829 Japan
| | - Takeshi Bamba
- />Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Eiichiro Fukusaki
- />Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871 Japan
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