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Chen J, Liu R, Lyv C, Wu M, Liu S, Jiang M, Zhang Y, Xu D, Hou K, Wu W. Identification of a 301 bp promoter core region of the SrUGT91D2 gene from Stevia rebaudiana that contributes to hormone and abiotic stress inducibility. BMC PLANT BIOLOGY 2024; 24:921. [PMID: 39358690 PMCID: PMC11447968 DOI: 10.1186/s12870-024-05616-1] [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: 06/17/2024] [Accepted: 09/23/2024] [Indexed: 10/04/2024]
Abstract
BACKGROUND The UDP-glucuronosyltransferase 91D2 (SrUGT91D2) gene is a crucial element in the biosynthetic pathway of steviol glycosides (SGs) and is responsible for creating 1,2-β-D glucosidic bonds at the C19 and C13 positions. This process plays a vital role in the synthesis of rebaudioside M (RM) and rebaudioside D (RD). The promoter, which regulates gene expression, requires functional analysis to understand gene expression regulation. However, investigations into the function of the promoter of SrUGT91D2 (pSrUGT91D2) have not been reported. RESULTS The pSrUGT91D2 was isolated from six S. rebaudiana lines, and subsequent multiple sequence comparisons revealed the presence of a 26 bp inDel fragment (pSrUGT91D2-B1188 type) in lines GP, GX, 110, 1114, and B1188 but not in the pSrUGT91D2 of line 023 (pSrUGT91D2-023 type). Bioinformatics analysis revealed a prevalence of significant cis-regulatory elements (CREs) within the promoter sequences, including those responsive to abscisic acid, light, anaerobic conditions, auxin, drought, low temperature, and MeJA. To verify the activity of pSrUGT91D2, the full-length promoter and a series of 5' deletion fragments (P1-P7) and a 3' deletion fragment (P8) from various lines were fused with the reporter β-glucuronidase (GUS) gene to construct the plant expression vector, pCAMBIA1300-pro∷GUS. The transcriptional activity of these genes was examined in tobacco leaves through transient transformation. GUS tissue staining analysis and enzyme activity assays demonstrated that both the full-length promoter and truncated pSrUGT91D2 were capable of initiating GUS expression in tobacco leaves. Interestingly, P8-pSrUGT91D2-B1188 (containing the inDel segment, 301 bp) exhibited enhanced activity in driving GUS gene expression. Transient expression studies of P8-pSrUGT91D2-B1188 and P8-pSrUGT91D2-023 in response to exogenous hormones (abscisic acid and indole-3-acetic acid) and light indicated the necessity of the inDel region for P8 to exhibit transcriptional activity, as it displayed strong responsiveness to abscisic acid (ABA), indole-3-acetic acid (IAA), and light induction. CONCLUSIONS These findings contribute to a deeper understanding of the regulatory mechanism of the upstream region of the SrUGT91D2 gene and provide a theoretical basis for future studies on the interaction between CREs of pSrUGT91D2 and related transcription factors.
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Affiliation(s)
- Jinsong Chen
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Renlang Liu
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Chengcheng Lyv
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mengyang Wu
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Siqin Liu
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Meiyan Jiang
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yurou Zhang
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Dongbei Xu
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Kai Hou
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wei Wu
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China.
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Bai Z, Zhao Z, Wang S, Li H, Chen DDY. Ambient mass spectrometry imaging of food natural products by angled direct analysis in real time high-resolution mass spectrometry. Food Chem 2024; 454:139802. [PMID: 38797098 DOI: 10.1016/j.foodchem.2024.139802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/08/2024] [Accepted: 05/20/2024] [Indexed: 05/29/2024]
Abstract
Direct surface analysis in ambient conditions provides information on the position and chemical composition of an object at the time of investigation. An angled sampling probe is developed in this work for direct analysis in real time (DART) ionization high-resolution mass spectrometry. The DART ion source and the interface were modified for improved surface resolution, increased ion transfer efficiency, as well as enabling two-dimensional surface scanning. The angled probe DART-MS system was used for investigating a variety of food samples including fruit peels, ginseng root, plant leaves and sections of radish. Abundant signals and distinct chemical profiles are obtained in seconds, and spatial distribution of different molecules across the sample surfaces can be observed. In addition, the developed system can quickly identify the chemical changes when the surfaces were treated. The method is capable of directly evaluating food sample surfaces with different shapes, hardness, and conditions, without any sample pretreatments.
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Affiliation(s)
- Zhiru Bai
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Zhengyan Zhao
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Saiting Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Hongli Li
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
| | - David Da Yong Chen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China; Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
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Okonkwo CE, Adeyanju AA, Onyeaka H, Nwonuma CO, Olaniran AF, Alejolowo OO, Inyinbor AA, Oluyori AP, Zhou C. A review on rebaudioside M: The next generation steviol glycoside and noncaloric sweetener. J Food Sci 2024. [PMID: 39323262 DOI: 10.1111/1750-3841.17401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 08/06/2024] [Accepted: 09/01/2024] [Indexed: 09/27/2024]
Abstract
So far, the use of artificial low-calorie sweeteners, like sucralose, saccharin, and so on, to replace the conventional-based sugars has not succeeded due to the long-term adverse health effects, for example, hypertension, and not well-known safety stand. In this review, we discussed the next generation SvGl (rebaudioside M [Reb M]), their biosynthetic pathway in plant, high-yield production via microbial fermentation and enzyme engineering, physicochemical properties, taste modification, kinetic metabolism, application in food and beverages, safety and toxicological evaluation, regulation and dosage recommendation, and health benefits. In stevia, the biosynthesis of stevia glycosides, especially Reb M, is derived from the bifurcation of the pathway leading to gibberellin, followed by subsequent enzymatic modification of rubusoside. Reb M is more economically produced via microbial fermentation of modified yeast Yarrowia lipolytica and enzymatic bioconversion of rebaudioside A (Reb A) or Reb E. Reb M can serve as a suitable alternative to the conventional-based sugars.
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Affiliation(s)
- Clinton E Okonkwo
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Department of Food Science, College of Food and Agriculture, United Arab Emirates University, Al Ain, UAE
| | - Adeyemi A Adeyanju
- Department of Food Science and Microbiology, College of Pure and Applied Science, Landmark University, Omu-Aran, Kwara State, Nigeria
| | - Helen Onyeaka
- School of Chemical Engineering, University of Birmingham, Birmingham, UK
| | - Charles Obiora Nwonuma
- Department of Biochemistry, College of Pure and Applied Sciences, Landmark University, Omu-Aran, Kwara State, Nigeria
| | - Abiola F Olaniran
- Department of Food Science and Microbiology, College of Pure and Applied Science, Landmark University, Omu-Aran, Kwara State, Nigeria
| | - Omokolade Oluwaseyi Alejolowo
- Department of Biochemistry, College of Pure and Applied Sciences, Landmark University, Omu-Aran, Kwara State, Nigeria
| | - Adejumoke A Inyinbor
- Physical Sciences Department, Industrial Chemistry Programme, Landmark University, Omu-Aran, Kwara State, Nigeria
| | - Abimbola Peter Oluyori
- Physical Sciences Department, Industrial Chemistry Programme, Landmark University, Omu-Aran, Kwara State, Nigeria
| | - Cunshan Zhou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
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Li S, Luo S, Zhao X, Gao S, Shan X, Lu J, Zhou J. Efficient Conversion of Stevioside to Rebaudioside M in Saccharomyces cerevisiae by a Engineering Hydrolase System and Prolonging the Growth Cycle. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:8140-8148. [PMID: 38563232 DOI: 10.1021/acs.jafc.4c01483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Rebaudioside (Reb) M is an important sweetener with high sweetness, but its low content in Stevia rebaudiana and low catalytic capacity of the glycosyltransferases in heterologous microorganisms limit its production. In order to improve the catalytic efficiency of the conversion of stevioside to Reb M by Saccharomyces cerevisiae, several key issues must be resolved including knocking out endogenous hydrolases, enhancing glycosylation, and extending the enzyme catalytic process. Herein, endogenous glycosyl hydrolase SCW2 was knocked out in S. cerevisiae. The glycosylation process was enhanced by screening glycosyltransferases, and UGT91D2 from S. rebaudiana was identified as the optimum glycosyltransferase. The UDP-glucose supply was enhanced by overexpressing UGP1, and co-expressing UGT91D2 and UGT76G1 achieved efficient conversion of stevioside to Reb M. In order to extend the catalytic process, the silencing information regulator 2 (SIR2) which can prolong the growth cycle of S. cerevisiae was introduced. Finally, combining these modifications produced 12.5 g/L Reb M and the yield reached 77.9% in a 5 L bioreactor with 10.0 g/L stevioside, the highest titer from steviol glycosides to Reb M reported to date. The engineered strain could facilitate the industrial production of Reb M, and the strategies provide references for the production of steviol glycosides.
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Affiliation(s)
- Shan Li
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, Jiangsu 214122, China
| | - Shuangshuang Luo
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, Jiangsu 214122, China
| | - Xingying Zhao
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, Jiangsu 214122, China
| | - Song Gao
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, Jiangsu 214122, China
| | - Xiaoyu Shan
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, Jiangsu 214122, China
| | - Jian Lu
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Jingwen Zhou
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, Jiangsu 214122, China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
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Cao M, Wu J, Zhu X, Jia Z, Zhou Y, Yu L, Hu C, Gao Y, Chen Z. Tissue distribution of metabolites in Cordyceps cicadae determined by DESI-MSI analysis. Anal Bioanal Chem 2024; 416:1883-1906. [PMID: 38367042 DOI: 10.1007/s00216-024-05188-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/18/2024] [Accepted: 01/31/2024] [Indexed: 02/19/2024]
Abstract
In this paper, we establish an in situ visualization analysis method to image the spatial distribution of metabolites in different parts (sclerotium, coremium) and different microregions of Cordyceps cicadae (C. cicadae) to achieve the in situ visual characterization of tissues for a variety of metabolites such as nucleosides, amino acids, polysaccharides, organic acids, fatty acids, and so on. The study included LC-MS chemical composition identification, preparation of C. cicadae tissue sections, DEDI-MSI analysis, DESI combined with Q-TOF/MS to obtain high-resolution imaging of mass-to-charge ratio and space, imaging of C. cicadae in positive-negative ion mode with a spatial resolution of 100 μm, and localizing and identifying its chemical compositions based on its precise mass. A total of 62 compounds were identified; nucleosides were mainly distributed in the coremium, L-threonine and DL-isoleucine, and other essential amino acids; peptides were mainly distributed in the sclerotium of C. cicadae; and the rest of the amino acids did not have a clear pattern; sugars and sugar alcohols were mainly distributed in the coremium of C. cicadae; organic acids and fatty acids were distributed in the nucleus of C. cicadae more than in the sclerotium, and the mass spectrometry imaging method is established in the research. The mass spectrometry imaging method established in this study is simple and fast and can visualize and analyse the spatial distribution of metabolites of C. cicadae, which is of great significance in characterizing the metabolic network of C. cicadae, and provides support for the quality evaluation of C. cicadae and the study of the temporal and spatial metabolic network of chemical compounds.
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Affiliation(s)
- Mayijie Cao
- Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Jie Wu
- Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Xiaoli Zhu
- Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Zhuolin Jia
- Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Ye Zhou
- Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Lingying Yu
- Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Changjiang Hu
- Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China.
| | - Yongxiang Gao
- International Education College, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China.
| | - Zhimin Chen
- Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China.
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6
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Ren Z, Zhang H, Yang L, Chen X, Zhang S, Chen S, Li D, Li C, Jiang H. Spatial distribution and comparative analysis of Aconitum alkaloids in Fuzi using DESI-MSI and UHPLC-QTOF-MS. Analyst 2023; 148:1603-1610. [PMID: 36912125 DOI: 10.1039/d2an02051c] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Aconitum L. poisoning is a major type of poisoning caused by herbal medicines in many countries. However, despite its toxicity, Aconitum L. is still used because of its therapeutic value. Fuzi, the lateral root of Aconitum L., is one of the most important pharmacological parts. It is necessary for rational medication to figure out the types and contents of toxic Aconitum alkaloids (AAs) in Fuzi and its processed products. The present study aims to investigate the spatial distribution of toxic AAs in Fuzi and the quantification of AAs in various processing products through mass spectrometry methods. In this study, desorption electrospray ionization mass spectrometry imaging (DESI-MSI) was used to directly image the sections of raw Fuzi. The results showed a high content of diester alkaloids (DAs) and a relatively uniform distribution in the sections, while the content of monoester alkaloids (MAs) was low and uneven in the sections, distributed in the cortex, epidermis, vascular column, and other parts of the tissues. The content of non-ester alkaloids (NAs) was relatively minimum, and most of the NAs were distributed in the vascular column and the tightly connected cortex of the tissue. To further investigate the difference between raw and processed Fuzi, 60 known compounds were identified using UHPLC-QTOF-MS. The total contents of alkaloids in 7 processed Fuzi were lower than that in Shengfupian (SFP). Paofupian (PFP), Paotianxiong (PTX), Paofupian (PFP*), Danfupian (DFP), and Shufupian (SFP*) were the least similar. Zhengfupian (ZFP) and Chaofupian (CFP) had significantly reduced toxicity and increased efficacy compared with other processed products because the contents of active alkaloids in other processed products were also reduced. Understanding the distribution of metabolites and the composition changes after processing can guide users and herbal manufacturers to carefully choose the relatively safe and better therapeutic species of Fuzi. The information gathered from this study can contribute towards the improved and effective management of therapeutically important, nonetheless toxic, drugs such as Aconitum L.
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Affiliation(s)
- Zhenhui Ren
- Department of Veterinary Pharmacology and Toxicology, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China. .,Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China
| | - Huixia Zhang
- Department of Veterinary Pharmacology and Toxicology, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
| | - Liu Yang
- Department of Veterinary Pharmacology and Toxicology, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
| | - Xin Chen
- Department of Veterinary Pharmacology and Toxicology, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
| | - Shuai Zhang
- Department of Veterinary Pharmacology and Toxicology, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
| | - Shiqi Chen
- Department of Veterinary Pharmacology and Toxicology, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
| | - Daowen Li
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China
| | - Cun Li
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China
| | - Haiyang Jiang
- Department of Veterinary Pharmacology and Toxicology, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
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Zhu Y, Ding Y, Tian D, Li Y, Zhuang L, Wang Y, Xiao W, Zhu J. Theoretical design and preparation research of molecularly imprinted polymers for steviol glycosides. J Mol Model 2021; 27:238. [PMID: 34363125 DOI: 10.1007/s00894-021-04819-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/09/2021] [Indexed: 10/20/2022]
Abstract
In this paper, a novel molecularly imprinted polymer (MIP) for specific adsorption of steviol glycosides was designed, and the imprinting mechanism of self-assembly system between template and monomers was clearly explored. Firstly, steviol (STE) was chosen as dummy template, and the density functional theory (DFT) at B3LYP/6-31 + G (d, p) level was used to select monomers, imprinting molar ratios, solvents, and cross-linking agents. The selectivity to five steviol glycosides was also calculated. Importantly, reduced density gradient (RDG) theory combined with atom in molecules (AIM) and infrared spectrum (IR) was applied to investigate the bonding situation and the nature of noncovalent interaction in self-assembly system. The theoretical designed results showed that the template which interacts with acrylic acid (AA) has the minimum binding energy, and the complex with the molar ratio of 1 : 4 has the most stable structure. Toluene (TL) and ethylene glycol dimethacrylate (EGDMA) were chosen as the optimal solvent and cross-linking agent, respectively. Five hydrogen bonds formed in the self-assembly system are the key forces at the adsorption sites of MIPs through the RDG and AIM analyses. The MIPs were synthesized by theoretical predictions, and the results showed that the maximum adsorption capacity towards dulcoside A is 26.17 mg/g. This work provided a theoretical direction and experimental validation for deeper researches of the MIPs for steviol glycosides. In addition, the method of RDG theory coupled with AIM and IR also could be used to analyze other imprinting formation mechanisms systematically.
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Affiliation(s)
- Yajie Zhu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, People's Republic of China
| | - Yan Ding
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, People's Republic of China. .,Institute of Chemistry and Applications of Plant Resources, Dalian Polytechnic University, Dalian, 116034, People's Republic of China.
| | - Dongxu Tian
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No 2 Linggong Road, Liaoning, 116024, China
| | - Yan Li
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, People's Republic of China
| | - Linwu Zhuang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, People's Republic of China
| | - Yinpeng Wang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, People's Republic of China
| | - Wei Xiao
- Jiangsu Kanion Pharmaceutical Co. Ltd., Lianyungang, Jiangsu, 222000, People's Republic of China
| | - Jingbo Zhu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, People's Republic of China. .,Institute of Chemistry and Applications of Plant Resources, Dalian Polytechnic University, Dalian, 116034, People's Republic of China.
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Massaro A, Negro A, Bragolusi M, Miano B, Tata A, Suman M, Piro R. Oregano authentication by mid-level data fusion of chemical fingerprint signatures acquired by ambient mass spectrometry. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108058] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Zhang A, Lin Y, Yang J, He L, Deng Y, Hou X, Zheng C. Microplasma-induced vapor generation for rapid, sample preparation-free screening of mercury in fruits and vegetables. Analyst 2021; 146:3852-3857. [PMID: 34075934 DOI: 10.1039/d1an00515d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A method for the rapid screening of toxic elements in fruits and vegetables is of significant importance to prevent human exposure to these elements. In this work, a simple method used for microplasma-induced vapor generation (μPIVG) was developed for the rapid screening and quantification of mercury in fruits and vegetables without sample preparation. A stainless-steel capillary was partly inserted into a juice droplet from the tested fruits and then the sample liquid automatically moved to the end of the capillary with the assistance of inherent capillary driving force. Subsequently, a high voltage was applied between the capillary and a tungsten electrode to generate microplasma wherein the juice was sprayed and the mercury ions contained in the juice were converted to mercury cold vapor (Hg0). The Hg0 was finally separated from the liquid phase and swept to an atomic fluorescence spectrometer (AFS) for rapid screening. A standard addition method coupled with μPIVG atomic fluorescence spectrometry was further used for the quantitative analysis of the suspected sample. Under the optimized conditions, the limits of detection (LODs) of 0.3, 0.5, and 0.4 μg L-1 were obtained for the tested tomato, lemon, and orange samples, respectively. The proposed technique provides a simple and cost-effective tool for the rapid screening of mercury in fruits and vegetables by atomic spectrometry.
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Affiliation(s)
- Ai Zhang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China.
| | - Yao Lin
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jiahui Yang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China.
| | - Liangbo He
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China.
| | - Yurong Deng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China.
| | - Xiandeng Hou
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China. and Analytical and Test Centre, Sichuan University, Chengdu, Sichuan 610064, China
| | - Chengbin Zheng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China.
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Sakr EA, Massoud MI. Impact of prebiotic potential of stevia sweeteners-sugar used as synbiotic preparation on antimicrobial, antibiofilm, and antioxidant activities. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Wang Z, Liu W, Liu W, Ma Y, Li Y, Wang B, Wei X, Liu Z, Song H. Co-immobilized recombinant glycosyltransferases efficiently convert rebaudioside A to M in cascade. RSC Adv 2021; 11:15785-15794. [PMID: 35481200 PMCID: PMC9029319 DOI: 10.1039/d0ra10574k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 04/14/2021] [Indexed: 12/31/2022] Open
Abstract
Rebaudioside M (Reb M), as a natural and healthy Stevia sweetener, is produced by two glycosyltransferases that catalyze the serial glycosylation of Rebaudioside A (Reb A) and Rebaudioside D (Reb D) in cascade. Meanwhile, it is of great importance in developing an immobilization strategy to improve the reusability of glycosyltransferases in reducing the production cost of Reb M. Here, the recombinant glycosyltransferases, i.e., OsEUGT11 (UGT1) and SrUGT76G1 (UGT2), were expressed in Escherichia coli and covalently immobilized onto chitosan beads. UGT1 and UGT2 were individually immobilized and co-immobilized onto the beads that catalyze Reb A to Reb M in one-pot. The co-immobilized enzymes system exhibited ∼3.2-fold higher activity than that of the mixed immobilized enzymes system. A fairly high Reb A conversion rate (97.3%) and a high Reb M yield of 72.2% (4.82 ± 0.11 g L-1) were obtained with a feeding Reb A concentration of 5 g L-1. Eventually, after 4 and 8 reused cycles, the co-immobilized enzymes retained 72.5% and 53.1% of their original activity, respectively, showing a high stability to minimize the total cost of enzymes and suggesting that the co-immobilized UGTs is of potentially signficant value for the production of Reb M.
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Affiliation(s)
- Zhenyang Wang
- College of Material Science and Engineering, Northeast Forestry University Harbin 150040 China
- R&D Division, Sinochem Health Company Ltd. Qingdao 266071 China
| | - Wenbin Liu
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
- Qingdo Institute of Ocean Engineering of Tianjin University Qingdao 266237 China
| | - Wei Liu
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
- Qingdo Institute of Ocean Engineering of Tianjin University Qingdao 266237 China
| | - Yuanyuan Ma
- Biomass Conversion Laboratory, Tianjin R&D Center for Petrochemical Technology, Tianjin University Tianjin 300072 China
- Frontier Technology Institute (Wuqing), Tianjin University Tianjin 30072 China
| | - Yatong Li
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
- Qingdo Institute of Ocean Engineering of Tianjin University Qingdao 266237 China
| | - Baoqi Wang
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
- Qingdo Institute of Ocean Engineering of Tianjin University Qingdao 266237 China
| | - Xiaozhen Wei
- R&D Division, Sinochem Health Company Ltd. Qingdao 266071 China
| | - Zhiming Liu
- College of Material Science and Engineering, Northeast Forestry University Harbin 150040 China
| | - Hao Song
- School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
- Qingdo Institute of Ocean Engineering of Tianjin University Qingdao 266237 China
- Frontier Science Center for Synthetic Biology, Key Laboratory of Systems Bioengineering (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
- Frontier Technology Institute (Wuqing), Tianjin University Tianjin 30072 China
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12
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Zhang S, Yang Y, Lyu C, Chen J, Li D, Liu Y, Zhang Z, Liu Y, Wu W. Identification of the Key Residues of the Uridine Diphosphate Glycosyltransferase 91D2 and its Effect on the Accumulation of Steviol Glycosides in Stevia rebaudiana. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:1852-1863. [PMID: 33550805 DOI: 10.1021/acs.jafc.0c07066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Stevia (Stevia rebaudiana Bertoni) possesses substantial value for its unique sweet compounds-steviol glycosides (SGs). In the metabolic glycosylation grid of SGs, SrUGT91D2 has been shown to catalyze formation of 1,2-β-d-glucoside linkages at the C13- and C19-positions and play a crucial role in the synthesis of SGs, including the formation of stevioside (ST), rebaudioside E (RE), and rebaudioside D (RD). However, the key residues of the SrUGT91D2 enzyme and how SrUGT91D2 affects the accumulation of SGs in S. rebaudiana remain unclear. In the present study, cloning and functional analysis of full-length SrUGT91D2 gene sequences were performed in 10 different S. rebaudiana genotypes with divergent SG compositions. After sequence analysis, it was found that most of the sequences of this gene (more than 50%) in each genotype were consistent with the UGT91D2e_No.5 allele, which has been reported to exert catalytic activity on 1,2-β-d-glucoside. Moreover, six variants (UGT91D2e_No.5, SrUGT91D2-11-14, SrUGT91D2-110, SrUGT91D2-023, SrUGT91D2-N01, and SrUGT91D2-N04) of this gene were obtained, and their activities were identified. Although there were some differences among these variants, the only type of mutation was partial base substitution at a very low level. In addition, the expression analysis of SrUGT91D2 in each genotype showed that the expression level of the gene was significantly different among genotypes, and a significant positive correlation was found between the content of RD (which was closely influenced by SrUGT91D2) and the expression level of SrUGT91D2 in each genotype (correlation coefficient = 0.91). Thus, it was indicated that SrUGT91D2 was relatively conserved in S. rebaudiana, and the differential effect of SrUGT91D2 on the accumulation of related SGs mainly derived from its expression level. Furthermore, based on homologous modeling and molecular docking analysis, T84, T144, A194, S284, E285, V286, G365, E369, R404, and G409 were predicted to be key residues in the glucosylation of SGs by SrUGT91D2. After site-mutation and enzyme assays, it was confirmed that T84, T144, R404, A194, and G409 are the key residues in the SrUGT91D2 protein, especially T144 and G409. This work provided valuable information for understanding the structure-activity relationship of the SrUGT91D2 protein and the molecular mechanism of SG accumulation in stevia.
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Affiliation(s)
- Shaoshan Zhang
- Agronomy College, Sichuan Agricultural University, Chengdu 611130, China
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu 610041, China
- Provincial Qiang-Yi Medicinal Resources Protection and Utilization Technology Engineering Laboratory, Southwest Minzu University, Chengdu 610225, China
| | - Yunshu Yang
- Agronomy College, Sichuan Agricultural University, Chengdu 611130, China
| | - Chengcheng Lyu
- Agronomy College, Sichuan Agricultural University, Chengdu 611130, China
| | - Jinsong Chen
- Agronomy College, Sichuan Agricultural University, Chengdu 611130, China
| | - Dandan Li
- Agronomy College, Sichuan Agricultural University, Chengdu 611130, China
| | - Yajie Liu
- Agronomy College, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhifeng Zhang
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu 610041, China
| | - Yuan Liu
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu 610041, China
- Provincial Qiang-Yi Medicinal Resources Protection and Utilization Technology Engineering Laboratory, Southwest Minzu University, Chengdu 610225, China
| | - Wei Wu
- Agronomy College, Sichuan Agricultural University, Chengdu 611130, China
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13
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Morlock GE, Heil J. HI-HPTLC-UV/Vis/FLD-HESI-HRMS and bioprofiling of steviol glycosides, steviol, and isosteviol in Stevia leaves and foods. Anal Bioanal Chem 2020; 412:6431-6448. [PMID: 32328691 PMCID: PMC7442773 DOI: 10.1007/s00216-020-02618-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/20/2020] [Accepted: 03/25/2020] [Indexed: 12/13/2022]
Abstract
Food products and botanicals on the global market need to be investigated in a more comprehensive way to detect effects, falsifications or adulterations. This is especially true for such ones containing Stevia leaves, Stevia extracts, or steviol glycosides. A multi-imaging profiling was developed exploiting hydrophilic interaction liquid chromatography (HILIC). A minimalistic sample preparation, different mixtures of acetonitrile and water/buffer on the silica gel phase as well as derivatization reagents and optional hyphenation with high-resolution mass spectrometry were exploited. The hydrophilic interaction high-performance thin-layer chromatography (HI-HPTLC) development took 10 min for 48 analyses. It was used to screen Stevia leaf extracts and 20 different food products. For the first time, the biological and biochemical profiling of Stevia leaf products by HI-HPTLC-UV/Vis/FLD-assay pointed to 19 different bioactive compound bands found in the more natural multicomponent Stevia leaf extracts, whereas most of these activities were not existent for the steviol glycosides. The chemically isolated, purified, and EU-regulated steviol glycosides ease risk assessment and food product development. However, multipotent botanicals may have subtle impact on homeostasis via several metabolic pathways, providing benefits for the consumer's health. Analyzed side by side by means of the effect-directed profiling, their individual activity profiles were visualized as image and individual substances of importance were pointed out. Multi-imaging (comprehensive detection) plus non-targeted bioprofiling (focus on known and unknown bioactivity) allows for a fast detection of questionable product changes that occur along the global food chain and are particularly related to food safety. Graphical abstract.
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Affiliation(s)
- Gertrud E Morlock
- Institute of Nutritional Science, Chair of Food Science, and TransMIT Center for Effect-Directed Analysis, Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany.
| | - Julia Heil
- Institute of Nutritional Science, Chair of Food Science, and TransMIT Center for Effect-Directed Analysis, Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
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14
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Chen L, Cai R, Weng J, Li Y, Jia H, Chen K, Yan M, Ouyang P. Production of rebaudioside D from stevioside using a UGTSL2 Asn358Phe mutant in a multi-enzyme system. Microb Biotechnol 2020; 13:974-983. [PMID: 32011106 PMCID: PMC7264896 DOI: 10.1111/1751-7915.13539] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 12/17/2019] [Accepted: 01/13/2020] [Indexed: 01/22/2023] Open
Abstract
Rebaudioside D is a sweetener from Stevia rebaudiana with superior sweetness and organoleptic properties, but its production is limited by its minute abundance in S. rebaudiana leaves. In this study, we established a multi-enzyme reaction system with S. rebaudiana UDP-glycosyltransferases UGT76G1, Solanum lycopersicum UGTSL2 and Solanum tuberosum sucrose synthase StSUS1, achieving a two-step glycosylation of stevioside to produce rebaudioside D. However, an increase in the accumulation of rebaudioside D required the optimization of UGTSL2 catalytic activity towards glucosylation of rebaudioside A and reducing the formation of the side-product rebaudioside M2. On the basis of homology modelling and structural analysis, Asn358 in UGTSL2 was subjected to saturating mutagenesis, and the Asn358Phe mutant was used instead of wild-type UGTSL2 for bioconversion. The established multi-enzyme reaction system employing the Asn358Phe mutant produced 14.4 g l-1 (1.6 times of wild-type UGTSL2) rebaudioside D from 20 g l-1 stevioside after reaction for 24 h. This system is useful for large-scale rebaudioside D production and expands our understanding of the pathways involved in its synthesis.
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Affiliation(s)
- Liangliang Chen
- College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing211800China
| | - Ruxin Cai
- College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing211800China
| | - Jingyuan Weng
- College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing211800China
| | - Yan Li
- College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing211800China
| | - Honghua Jia
- College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing211800China
| | - Kequan Chen
- College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing211800China
| | - Ming Yan
- College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing211800China
| | - Pingkai Ouyang
- College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing211800China
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15
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Jahangir Chughtai MF, Pasha I, Zahoor T, Khaliq A, Ahsan S, Wu Z, Nadeem M, Mehmood T, Amir RM, Yasmin I, Liaqat A, Tanweer S. Nutritional and therapeutic perspectives of Stevia rebaudiana as emerging sweetener; a way forward for sweetener industry. CYTA - JOURNAL OF FOOD 2020. [DOI: 10.1080/19476337.2020.1721562] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Imran Pasha
- National Institute of Food Science & Technology, Faculty of Food Nutrition & Home Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Tahir Zahoor
- National Institute of Food Science & Technology, Faculty of Food Nutrition & Home Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Adnan Khaliq
- Department of Food Science & Technology, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan
| | - Samreen Ahsan
- Department of Food Science & Technology, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan
| | - Zhengzhong Wu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Muhammad Nadeem
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari, Punjab, Pakistan
| | - Tariq Mehmood
- Department of Food Science & Technology, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan
| | - Rai Muhammad Amir
- Institute of Food and Nutritional Sciences, PMAS Arid Agriculture University, Rawalpindi, Punjab, Pakistan
| | - Iqra Yasmin
- Department of Food Science and Technology, Government College Women University, Faisalabad, Pakistan
- Barani Agricultural Research Institute, Chakwal, Pakistan
| | - Atif Liaqat
- Department of Food Science & Technology, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan
| | - Saira Tanweer
- Department of Food Science and Technology, University College of Agricultural and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
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16
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Dong J, Yang Z. Characterization of a new hemihydrate rebaudioside B crystal having lower aqueous solubility. Food Chem 2020; 304:125444. [DOI: 10.1016/j.foodchem.2019.125444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/22/2019] [Accepted: 08/28/2019] [Indexed: 10/26/2022]
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17
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18
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Sathyanarayanan G, Haapala M, Sikanen T. Interfacing Digital Microfluidics with Ambient Mass Spectrometry Using SU-8 as Dielectric Layer. MICROMACHINES 2018; 9:E649. [PMID: 30544772 PMCID: PMC6316065 DOI: 10.3390/mi9120649] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 11/27/2018] [Accepted: 12/06/2018] [Indexed: 01/20/2023]
Abstract
This work describes the interfacing of electrowetting-on-dielectric based digital microfluidic (DMF) sample preparation devices with ambient mass spectrometry (MS) via desorption atmospheric pressure photoionization (DAPPI). The DMF droplet manipulation technique was adopted to facilitate drug distribution and metabolism assays in droplet scale, while ambient mass spectrometry (MS) was exploited for the analysis of dried samples directly on the surface of the DMF device. Although ambient MS is well-established for bio- and forensic analyses directly on surfaces, its interfacing with DMF is scarce and requires careful optimization of the surface-sensitive processes, such as sample precipitation and the subsequent desorption/ionization. These technical challenges were addressed and resolved in this study by making use of the high mechanical, thermal, and chemical stability of SU-8. In our assay design, SU-8 served as the dielectric layer for DMF as well as the substrate material for DAPPI-MS. The feasibility of SU-8 based DMF devices for DAPPI-MS was demonstrated in the analysis of selected pharmaceuticals following on-chip liquid-liquid extraction or an enzymatic dealkylation reaction. The lower limits of detection were in the range of 1⁻10 pmol per droplet (0.25⁻1.0 µg/mL) for all pharmaceuticals tested.
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Affiliation(s)
- Gowtham Sathyanarayanan
- Drug Research Program, Faculty of Pharmacy, Division of Pharmaceutical Chemistry and Technology, University of Helsinki, Viikinkaari 5E, 00790 Helsinki, Finland.
| | - Markus Haapala
- Drug Research Program, Faculty of Pharmacy, Division of Pharmaceutical Chemistry and Technology, University of Helsinki, Viikinkaari 5E, 00790 Helsinki, Finland.
| | - Tiina Sikanen
- Drug Research Program, Faculty of Pharmacy, Division of Pharmaceutical Chemistry and Technology, University of Helsinki, Viikinkaari 5E, 00790 Helsinki, Finland.
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19
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Towers MW, Karancsi T, Jones EA, Pringle SD, Claude E. Optimised Desorption Electrospray Ionisation Mass Spectrometry Imaging (DESI-MSI) for the Analysis of Proteins/Peptides Directly from Tissue Sections on a Travelling Wave Ion Mobility Q-ToF. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2018; 29:2456-2466. [PMID: 30168053 PMCID: PMC6276080 DOI: 10.1007/s13361-018-2049-0] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 07/20/2018] [Accepted: 08/03/2018] [Indexed: 05/04/2023]
Abstract
Desorption electrospray ionisation mass spectrometry imaging (DESI-MSI) is typically known for the ionisation of small molecules such as lipids and metabolites, in singly charged form. Here we present a method that allows the direct detection of proteins and peptides in multiply charged forms directly from tissue sections by DESI. Utilising a heated mass spectrometer inlet capillary, combined with ion mobility separation (IMS), the conditions with regard to solvent composition, nebulising gas flow, and solvent flow rate have been explored and optimised. Without the use of ion mobility separation prior to mass spectrometry analysis, only the most abundant charge series were observed. In addition to the dominant haemoglobin subunit(s) related trend line in the m/z vs drift time (DT) 2D plot, trend lines were found relating to background solvent peaks, residual lipids and, more importantly, small proteins/large peptides of lower abundance. These small proteins/peptides were observed with charge states from 1+ to 12+, the majority of which could only be resolved from the background when using IMS. By extracting charge series from the 2D m/z vs DT plot, a number of proteins could be tentatively assigned by accurate mass. Tissue images were acquired with a pixel size of 150 μm showing a marked improvement in protein image resolution compared to other liquid-based ambient imaging techniques such as liquid extraction surface analysis (LESA) and continuous-flow liquid microjunction surface sampling probe (LMJ-SSP) imaging. Graphical Abstract ᅟ.
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Affiliation(s)
- Mark W Towers
- Waters Corporation, Stamford Avenue, Altricham Road, Wilmslow, SK9 4AX, UK.
| | - Tamas Karancsi
- Waters Research Centre, Záhony utca., C ép., 1. Em., Budapest, 1031, Hungary
| | - Emrys A Jones
- Waters Corporation, Stamford Avenue, Altricham Road, Wilmslow, SK9 4AX, UK
| | - Steven D Pringle
- Waters Corporation, Stamford Avenue, Altricham Road, Wilmslow, SK9 4AX, UK
| | - Emmanuelle Claude
- Waters Corporation, Stamford Avenue, Altricham Road, Wilmslow, SK9 4AX, UK
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20
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Gardana C, Simonetti P. Determination of steviol glycosides in commercial extracts of Stevia rebaudiana and sweeteners by ultra-high performance liquid chromatography Orbitrap mass spectrometry. J Chromatogr A 2018; 1578:8-14. [PMID: 30287064 DOI: 10.1016/j.chroma.2018.09.057] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 05/21/2018] [Accepted: 09/27/2018] [Indexed: 12/12/2022]
Abstract
Stevia rebaudiana extracts are used as sweeteners in several countries worldwide. Several extracts of diverse composition are available on the market, and their taste depends on the contents of the various steviol glycosides. This study presents an accurate method for the qualitative and quantitative determination of steviol glycosides in 40 Stevia extracts, 7 sweeteners and 3 Stevia-sweetened beverages by a UHPLC coupled to an Orbitrap mass spectrometer. The sub-2 μm amide column provided the separation of all the target analytes in a run time of 30 min with high resolution. The effect of different eluent compositions on the ionisation efficiency of the steviol glycosides was studied. The optimal ionisation conditions were achieved in negative mode using 0.05% formic acid. Under this condition, adducts were not found, [M-H]- were the main ions and the spontaneous loss of a glucose residue at C19 was reduced. The %RSD for intra- and inter-day precision for all eleven analytes varied from 2.1 to 4.2% and 3.0-5.1%, respectively. The recoveries from spiked Stevia extract samples were greater than 95% for all analytes. Rebaudioside A was the most abundant, ranging from 23 to 102%. Nine Stevia extracts and one drink were not compliant with the European Regulation. Isosteviol was under the LOD in all samples and steviol was found in four samples in quantities in the range 0.01-0.03%.
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Affiliation(s)
- C Gardana
- Università degli Studi di Milano, DeFENS - Department of Food, Environmental and Nutritional Sciences. Via Celoria 2, 20133, Milano, Italy.
| | - P Simonetti
- Università degli Studi di Milano, DeFENS - Department of Food, Environmental and Nutritional Sciences. Via Celoria 2, 20133, Milano, Italy.
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21
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Zhu MZ, Chen GL, Wu JL, Li N, Liu ZH, Guo MQ. Recent development in mass spectrometry and its hyphenated techniques for the analysis of medicinal plants. PHYTOCHEMICAL ANALYSIS : PCA 2018; 29:365-374. [PMID: 29687660 DOI: 10.1002/pca.2763] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 02/10/2018] [Accepted: 02/12/2018] [Indexed: 05/24/2023]
Abstract
INTRODUCTION Medicinal plants are gaining increasing attention worldwide due to their empirical therapeutic efficacy and being a huge natural compound pool for new drug discovery and development. The efficacy, safety and quality of medicinal plants are the main concerns, which are highly dependent on the comprehensive analysis of chemical components in the medicinal plants. With the advances in mass spectrometry (MS) techniques, comprehensive analysis and fast identification of complex phytochemical components have become feasible, and may meet the needs, for the analysis of medicinal plants. OBJECTIVE Our aim is to provide an overview on the latest developments in MS and its hyphenated technique and their applications for the comprehensive analysis of medicinal plants. METHODOLOGY Application of various MS and its hyphenated techniques for the analysis of medicinal plants, including but not limited to one-dimensional chromatography, multiple-dimensional chromatography coupled to MS, ambient ionisation MS, and mass spectral database, have been reviewed and compared in this work. RESULTS Recent advancs in MS and its hyphenated techniques have made MS one of the most powerful tools for the analysis of complex extracts from medicinal plants due to its excellent separation and identification ability, high sensitivity and resolution, and wide detection dynamic range. CONCLUSION To achieve high-throughput or multi-dimensional analysis of medicinal plants, the state-of-the-art MS and its hyphenated techniques have played, and will continue to play a great role in being the major platform for their further research in order to obtain insight into both their empirical therapeutic efficacy and quality control.
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Affiliation(s)
- Ming-Zhi Zhu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, P. R. China
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, P. R. China
- State Key Laboratory for Quality Research of Chinese Medicines, Macau University of Science and Technology, Taipa, Macau
| | - Gui-Lin Chen
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, P. R. China
- The Sino-Africa Joint Research Centre, Chinese Academy of Sciences, Wuhan, P. R. China
| | - Jian-Lin Wu
- State Key Laboratory for Quality Research of Chinese Medicines, Macau University of Science and Technology, Taipa, Macau
| | - Na Li
- State Key Laboratory for Quality Research of Chinese Medicines, Macau University of Science and Technology, Taipa, Macau
| | - Zhong-Hua Liu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, P. R. China
| | - Ming-Quan Guo
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, P. R. China
- The Sino-Africa Joint Research Centre, Chinese Academy of Sciences, Wuhan, P. R. China
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22
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McCullagh M, Douce D, Van Hoeck E, Goscinny S. Exploring the Complexity of Steviol Glycosides Analysis Using Ion Mobility Mass Spectrometry. Anal Chem 2018. [DOI: 10.1021/acs.analchem.7b05002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Michael McCullagh
- Waters Corporation, Stamford Avenue, Altrincham Road, Wilmslow, SK9 4AX, U.K
| | - David Douce
- Waters Corporation, Stamford Avenue, Altrincham Road, Wilmslow, SK9 4AX, U.K
| | - Els Van Hoeck
- Scientific Institute of Public Health, Rue Juliette Wytsmans 14, 1050 Brussels, Belgium
| | - Severine Goscinny
- Scientific Institute of Public Health, Rue Juliette Wytsmans 14, 1050 Brussels, Belgium
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23
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A new natural source for obtainment of inulin and fructo-oligosaccharides from industrial waste of Stevia rebaudiana Bertoni. Food Chem 2017; 225:154-161. [DOI: 10.1016/j.foodchem.2016.12.100] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 11/28/2016] [Accepted: 12/31/2016] [Indexed: 11/18/2022]
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24
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Wald JP, Morlock GE. Quantification of steviol glycosides in food products, Stevia leaves and formulations by planar chromatography, including proof of absence for steviol and isosteviol. J Chromatogr A 2017; 1506:109-119. [PMID: 28552425 DOI: 10.1016/j.chroma.2017.05.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 05/08/2017] [Accepted: 05/09/2017] [Indexed: 01/01/2023]
Abstract
Steviol glycosides may degrade in food products under certain processing and storage conditions. Hence, a method was developed that separated in the same chromatographic run seven important steviol glycosides, and additionally as a sum parameter, their reported breakdown products steviol and isosteviol. Through derivatizations with the 2-naphthol and the primuline reagent, the detection was selective and inexpensive. In case needed, the baseline separation of steviol and isosteviol was also demonstrated after a plate cut and subsequent short development (two-step method). The HPTLC method was robust with regard to varying sample matrix loads, as the stationary phase was used only once. A high sample throughput was achieved, i.e. 23 separations were performed in parallel on one plate. The total analysis time took 1h (30min application, 15min separation and 15min derivatization/densitometry) leading to a calculated analysis time of 2.6min per sample. The solvent consumption was 8mL in total (0.4mL per analysis). HPTLC-ESI-MS was employed for confirmation of the results obtained. Mass spectra were recorded only from the zones of interest, and not from matrix or background, leading to decisive advantages, such as less need for MS cleaning. The optimized HPTLC method was shown to effectively support quality control, as marketed samples may be falsified with cheaper synthetic sweeteners, which was also demonstrated in this study. The accuracy of the densitometric quantification in HPTLC was considered as high, as standards and samples were separated on fresh adsorbent and detected simultaneously under identical conditions, which minimized the influence of errors. Finally, the Aliivibrio fischeri bioassay was employed to obtain information on bioactive compounds in Stevia leaf extracts.
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Affiliation(s)
- Julian P Wald
- Chair of Food Sciences, Institute for Nutritional Science and Interdisciplinary Research Center (IFZ), Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany
| | - Gertrud E Morlock
- Chair of Food Sciences, Institute for Nutritional Science and Interdisciplinary Research Center (IFZ), Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany.
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Di Donna L, Mazzotti F, Santoro I, Sindona G. Tandem mass spectrometry: a convenient approach in the dosage of steviol glycosides in Stevia sweetened commercial food beverages. JOURNAL OF MASS SPECTROMETRY : JMS 2017; 52:290-295. [PMID: 28251728 DOI: 10.1002/jms.3925] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/24/2017] [Accepted: 02/27/2017] [Indexed: 06/06/2023]
Abstract
The use of sweeteners extracted from leaves of the plant species Stevia rebaudiana is increasing worldwide. They are recognized as generally recognized as safe by the US-FDA and approved by EU-European Food Safety Authority, with some recommendation on the daily dosage that should not interfere with glucose metabolism. The results presented here introduce an easy analytical approach for the identification and assay of Stevia sweeteners in commercially available soft drink, based on liquid chromatography coupled to tandem mass spectrometry, using a natural statin-like molecule, Brutieridin, as internal standard. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- L Di Donna
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci Cubo 12/C, I-87036, Arcavacata di Rende (CS), Italy
| | - F Mazzotti
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci Cubo 12/C, I-87036, Arcavacata di Rende (CS), Italy
| | - I Santoro
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci Cubo 12/C, I-87036, Arcavacata di Rende (CS), Italy
| | - G Sindona
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci Cubo 12/C, I-87036, Arcavacata di Rende (CS), Italy
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Pavlíček V, Tůma P. The use of capillary electrophoresis with contactless conductivity detection for sensitive determination of stevioside and rebaudioside A in foods and beverages. Food Chem 2017; 219:193-198. [DOI: 10.1016/j.foodchem.2016.09.135] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 08/02/2016] [Accepted: 09/21/2016] [Indexed: 10/21/2022]
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Guo T, Yong W, Jin Y, Zhang L, Liu J, Wang S, Chen Q, Dong Y, Su H, Tan T. Applications of DART-MS for food quality and safety assurance in food supply chain. MASS SPECTROMETRY REVIEWS 2017; 36:161-187. [PMID: 25975720 DOI: 10.1002/mas.21466] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 01/20/2015] [Accepted: 01/20/2015] [Indexed: 05/21/2023]
Abstract
Direct analysis in real time (DART) represents a new generation of ion source which is used for rapid ionization of small molecules under ambient conditions. The combination of DART and various mass spectrometers allows analyzing multiple food samples with simple or no sample treatment, or in conjunction with prevailing protocolized sample preparation methods. Abundant applications by DART-MS have been reviewed in this paper. The DART-MS strategy applied to food supply chain (FSC), including production, processing, and storage and transportation, provides a comprehensive solution to various food components, contaminants, authenticity, and traceability. Additionally, typical applications available in food analysis by other ambient ionization mass spectrometers were summarized, and fundamentals mainly including mechanisms, devices, and parameters were discussed as well. © 2015 Wiley Periodicals, Inc. Mass Spec Rev. 36:161-187, 2017.
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Affiliation(s)
- Tianyang Guo
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Wei Yong
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing 100123, P.R. China
| | - Yong Jin
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing 100123, P.R. China
| | - Liya Zhang
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Jiahui Liu
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Sai Wang
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Qilong Chen
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Yiyang Dong
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Haijia Su
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Tianwei Tan
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, P.R. China
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Olsson K, Carlsen S, Semmler A, Simón E, Mikkelsen MD, Møller BL. Microbial production of next-generation stevia sweeteners. Microb Cell Fact 2016; 15:207. [PMID: 27923373 PMCID: PMC5142139 DOI: 10.1186/s12934-016-0609-1] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 11/27/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The glucosyltransferase UGT76G1 from Stevia rebaudiana is a chameleon enzyme in the targeted biosynthesis of the next-generation premium stevia sweeteners, rebaudioside D (Reb D) and rebaudioside M (Reb M). These steviol glucosides carry five and six glucose units, respectively, and have low sweetness thresholds, high maximum sweet intensities and exhibit a greatly reduced lingering bitter taste compared to stevioside and rebaudioside A, the most abundant steviol glucosides in the leaves of Stevia rebaudiana. RESULTS In the metabolic glycosylation grid leading to production of Reb D and Reb M, UGT76G1 was found to catalyze eight different reactions all involving 1,3-glucosylation of steviol C 13- and C 19-bound glucoses. Four of these reactions lead to Reb D and Reb M while the other four result in formation of side-products unwanted for production. In this work, side-product formation was reduced by targeted optimization of UGT76G1 towards 1,3 glucosylation of steviol glucosides that are already 1,2-diglucosylated. The optimization of UGT76G1 was based on homology modelling, which enabled identification of key target amino acids present in the substrate-binding pocket. These residues were then subjected to site-saturation mutagenesis and a mutant library containing a total of 1748 UGT76G1 variants was screened for increased accumulation of Reb D or M, as well as for decreased accumulation of side-products. This screen was performed in a Saccharomyces cerevisiae strain expressing all enzymes in the rebaudioside biosynthesis pathway except for UGT76G1. CONCLUSIONS Screening of the mutant library identified mutations with positive impact on the accumulation of Reb D and Reb M. The effect of the introduced mutations on other reactions in the metabolic grid was characterized. This screen made it possible to identify variants, such as UGT76G1Thr146Gly and UGT76G1His155Leu, which diminished accumulation of unwanted side-products and gave increased specific accumulation of the desired Reb D or Reb M sweeteners. This improvement in a key enzyme of the Stevia sweetener biosynthesis pathway represents a significant step towards the commercial production of next-generation stevia sweeteners.
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Affiliation(s)
- Kim Olsson
- Evolva A/S, Lersø Park Alle 42-44, 5th, 2100 Copenhagen OE, Denmark
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Copenhagen, Denmark
| | - Simon Carlsen
- Evolva A/S, Lersø Park Alle 42-44, 5th, 2100 Copenhagen OE, Denmark
| | - Angelika Semmler
- Evolva A/S, Lersø Park Alle 42-44, 5th, 2100 Copenhagen OE, Denmark
| | - Ernesto Simón
- Evolva A/S, Lersø Park Alle 42-44, 5th, 2100 Copenhagen OE, Denmark
| | | | - Birger Lindberg Møller
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Copenhagen, Denmark
- Center for Synthetic Biology “bioSYNergy”, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Copenhagen Denmark
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Yang Y, Deng J. Analysis of pharmaceutical products and herbal medicines using ambient mass spectrometry. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.04.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Aranda-González I, Moguel-Ordóñez Y, Chel-Guerrero L, Segura-Campos M, Betancur-Ancona D. Evaluation of the Antihyperglycemic Effect of Minor Steviol Glycosides in Normoglycemic and Induced-Diabetic Wistar Rats. J Med Food 2016; 19:844-52. [DOI: 10.1089/jmf.2016.0014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Irma Aranda-González
- Faculty of Medicine, Autonomous University of Yucatan, Merida, Mexico
- Faculty of Chemical Engineering, Autonomous University of Yucatan, Merida, Mexico
| | - Yolanda Moguel-Ordóñez
- National Institute of Forestry, Agricultural and Livestock Research, Mococha Experimental Campus, Mococha, Mexico
| | - Luis Chel-Guerrero
- Faculty of Chemical Engineering, Autonomous University of Yucatan, Merida, Mexico
| | - Maira Segura-Campos
- Faculty of Chemical Engineering, Autonomous University of Yucatan, Merida, Mexico
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31
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Jun G, Park TM, Cha S. Fast and Simple Chemical Fingerprinting Analysis of Medicinal Herbs by Paper Cone Spray Ionization Mass Spectrometry (PCSI MS). B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10868] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Gyuwoong Jun
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin Kyunggi-Do 17035 Korea
| | - Tae-Min Park
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin Kyunggi-Do 17035 Korea
| | - Sangwon Cha
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin Kyunggi-Do 17035 Korea
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Canela N, Rodríguez MÁ, Baiges I, Nadal P, Arola L. Foodomics imaging by mass spectrometry and magnetic resonance. Electrophoresis 2016; 37:1748-67. [DOI: 10.1002/elps.201500494] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 12/22/2015] [Accepted: 01/05/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Núria Canela
- Group of Research on Omic Methodologies (GROM); Universitat Rovira i Virgili; Reus Spain
- Centre for Omic Sciences (COS); Universitat Rovira i Virgili; Reus Spain
| | - Miguel Ángel Rodríguez
- Group of Research on Omic Methodologies (GROM); Universitat Rovira i Virgili; Reus Spain
- Centre for Omic Sciences (COS); Universitat Rovira i Virgili; Reus Spain
| | - Isabel Baiges
- Group of Research on Omic Methodologies (GROM); Universitat Rovira i Virgili; Reus Spain
- Centre for Omic Sciences (COS); Universitat Rovira i Virgili; Reus Spain
| | - Pedro Nadal
- Group of Research on Omic Methodologies (GROM); Universitat Rovira i Virgili; Reus Spain
- Centre for Omic Sciences (COS); Universitat Rovira i Virgili; Reus Spain
- Centre Tecnològic de Nutriciò i Salut (CTNS); Reus Spain
| | - Lluís Arola
- Centre for Omic Sciences (COS); Universitat Rovira i Virgili; Reus Spain
- Centre Tecnològic de Nutriciò i Salut (CTNS); Reus Spain
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33
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Wong MYM, So PK, Yao ZP. Direct analysis of traditional Chinese medicines by mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1026:2-14. [DOI: 10.1016/j.jchromb.2015.11.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 11/16/2015] [Accepted: 11/18/2015] [Indexed: 12/20/2022]
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34
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Falcone CE, Cooks RG. Molecular recognition of emerald ash borer infestation using leaf spray mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2016; 30:1304-1312. [PMID: 27173112 DOI: 10.1002/rcm.7561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 03/11/2016] [Accepted: 03/12/2016] [Indexed: 06/05/2023]
Abstract
RATIONALE The introduction of the emerald ash borer (Agrilus planipennis) (EAB) from Asia to Michigan, USA, in the 1990s caused the widespread death of ash trees in two Canadian provinces and 24 US states. The three current methods for the detection of emerald ash borer infestation, visual surveys, tree girdling and artificial traps, can be unreliable, and there is clearly a need for a rapid, dependable technique for the detection of emerald ash borer infestation. METHODS Leaf spray, an ambient ionization method for mass spectrometry (MS), gives direct chemical information on a leaf sample by applying a high voltage to a naturally or artificially sharply pointed leaf piece causing ions to be generated directly from the leaf tip for MS analysis. RESULTS Leaflets from 23 healthy and EAB-infested ash trees were analyzed by leaf spray mass spectrometry in an attempt to distinguish healthy and EAB-infested ash trees. In negative ion mode, healthy ash trees showed an increased abundance of ions m/z 455.5, 471.5 and 487.5, and ash trees infested with the EAB displayed an increased abundance of ions m/z 181 and 217. The identities of the chemical discriminators ursolic acid and oleanolic acid in healthy ash trees, and six-carbon sugar alcohols in infested ash trees, were determined by tandem mass spectrometry and confirmed with standards. CONCLUSIONS This preliminary study suggests that leaf spray mass spectrometry of ash tree leaflets provides a potential tool for the early detection of ash tree infestation by the emerald ash borer. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Caitlin E Falcone
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907, USA
| | - R Graham Cooks
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907, USA
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35
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Handberg E, Chingin K, Wang N, Dai X, Chen H. Mass spectrometry imaging for visualizing organic analytes in food. MASS SPECTROMETRY REVIEWS 2015; 34:641-58. [PMID: 24687728 DOI: 10.1002/mas.21424] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 02/18/2014] [Accepted: 02/18/2014] [Indexed: 05/27/2023]
Abstract
The demand for rapid chemical imaging of food products steadily increases. Mass spectrometry (MS) is featured by excellent molecular specificity of analysis and is, therefore, a very attractive method for chemical profiling. MS for food imaging has increased significantly over the past decade, aided by the emergence of various ambient ionization techniques that allow direct and rapid analysis in ambient environment. In this article, the current status of food imaging with MSI is reviewed. The described approaches include matrix-assisted laser desorption/ionization (MALDI), but emphasize desorption atmospheric pressure photoionization (DAPPI), electrospray-assisted laser desorption/ionization (ELDI), probe electrospray ionization (PESI), surface desorption atmospheric pressure chemical ionization (SDAPCI), and laser ablation flowing atmospheric pressure afterglow (LA-FAPA). The methods are compared with regard to spatial resolution; analysis speed and time; limit of detection; and technical aspects. The performance of each method is illustrated with the description of a related application. Specific requirements in food imaging are discussed.
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Affiliation(s)
- Eric Handberg
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, Department of Applied Chemistry, East China Institute of Technology, Nanchang, 330013, P.R. China
| | - Konstantin Chingin
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, Department of Applied Chemistry, East China Institute of Technology, Nanchang, 330013, P.R. China
| | - Nannan Wang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, Department of Applied Chemistry, East China Institute of Technology, Nanchang, 330013, P.R. China
| | - Ximo Dai
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, Department of Applied Chemistry, East China Institute of Technology, Nanchang, 330013, P.R. China
| | - Huanwen Chen
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, Department of Applied Chemistry, East China Institute of Technology, Nanchang, 330013, P.R. China
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Sumner LW, Lei Z, Nikolau BJ, Saito K. Modern plant metabolomics: advanced natural product gene discoveries, improved technologies, and future prospects. Nat Prod Rep 2015; 32:212-29. [PMID: 25342293 DOI: 10.1039/c4np00072b] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Plant metabolomics has matured and modern plant metabolomics has accelerated gene discoveries and the elucidation of a variety of plant natural product biosynthetic pathways. This review covers the approximate period of 2000 to 2014, and highlights specific examples of the discovery and characterization of novel genes and enzymes associated with the biosynthesis of natural products such as flavonoids, glucosinolates, terpenoids, and alkaloids. Additional examples of the integration of metabolomics with genome-based functional characterizations of plant natural products that are important to modern pharmaceutical technology are also reviewed. This article also provides a substantial review of recent technical advances in mass spectrometry imaging, nuclear magnetic resonance imaging, integrated LC-MS-SPE-NMR for metabolite identifications, and X-ray crystallography of microgram quantities for structural determinations. The review closes with a discussion on the future prospects of metabolomics related to crop species and herbal medicine.
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Affiliation(s)
- Lloyd W Sumner
- The Samuel Roberts Noble Foundation, Plant Biology Division, 2510 Sam Noble Parkway, Ardmore, OK, USA.
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37
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Gaudêncio SP, Pereira F. Dereplication: racing to speed up the natural products discovery process. Nat Prod Rep 2015; 32:779-810. [PMID: 25850681 DOI: 10.1039/c4np00134f] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Covering: 1993-2014 (July)To alleviate the dereplication holdup, which is a major bottleneck in natural products discovery, scientists have been conducting their research efforts to add tools to their "bag of tricks" aiming to achieve faster, more accurate and efficient ways to accelerate the pace of the drug discovery process. Consequently dereplication has become a hot topic presenting a huge publication boom since 2012, blending multidisciplinary fields in new ways that provide important conceptual and/or methodological advances, opening up pioneering research prospects in this field.
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Affiliation(s)
- Susana P Gaudêncio
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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Tata A, Perez CJ, Hamid TS, Bayfield MA, Ifa DR. Analysis of metabolic changes in plant pathosystems by imprint imaging DESI-MS. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2015; 26:641-8. [PMID: 25510927 DOI: 10.1007/s13361-014-1039-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 10/27/2014] [Accepted: 10/28/2014] [Indexed: 05/24/2023]
Abstract
The response of plants to microbial pathogens is based on the production of secondary metabolites. The complexity of plant-pathogen interactions makes their understanding a challenging task for metabolomic studies requiring powerful analytical approaches. In this paper, the ability of ambient mass spectrometry to provide a snapshot of plant metabolic response to pathogen invasion was tested. The fluctuations of glycoalkaloids present in sprouted potatoes infected by the phytopathogen Pythium ultimum were monitored by imprint imaging desorption electrospray ionization mass spectrometry (DESI-MS). After 8 d from the inoculation, a decrease of the relative abundance of potato glycoalkaloids α-solanine (m/z 706) and α-chaconine (m/z 722) was observed, whereas the relative intensity of solanidine (m/z 398), solasodenone (m/z 412), solanaviol (m/z 430), solasodiene (m/z 396), solaspiralidine (m/z 428), γ-solanine/γ-chaconine (m/z 560) , β-solanine (m/z 706), and β-chaconine (m/z 722) increased. The progression of the disease, expressed by the development of brown necrotic lesions on the potato, led to the further decrease of all the glycoalkaloid metabolites. Therefore, the applicability of imprint imaging DESI-MS in studying the plant metabolic changes in a simple pathosystem was demonstrated with minimal sample preparation.
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Affiliation(s)
- Alessandra Tata
- Centre for Research in Mass Spectrometry, Department of Chemistry, York University, Toronto, Ontario, Canada
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Chang Q, Peng Y, Dan C, Shuai Q, Hu S. Rapid in situ identification of bioactive compounds in plants by in vivo nanospray high-resolution mass spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:2911-2918. [PMID: 25749134 DOI: 10.1021/jf505749n] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A method for the rapid in situ identification of bioactive compounds in fresh plants has been developed using in vivo nanospray coupled to high-resolution mass spectrometry (HR-MS). Using a homemade in vivo nanospray ion source, the plant liquid was drawn out from a target region and ionized in situ. The ionized bioactive compounds were then identified using Q-Orbitrap HR-MS. The accurate mass measurements of these bioactive compounds were performed by full-scan or selected ion monitoring (SIM), and tandem mass spectrometry (MS/MS) was used in the structural elucidation. Without sample pretreatment, 12 bioactive compounds in 7 different plant species were identified, namely, isoalliin in onion; butylphthalide in celery; N-methylpelletierine, pelletierine, and pseudopelletierine in pomegranate; chlorogenic acid in crabapple; solamargine, solasonine, and solasodine in nightshade; aloin and aloe-emodin in aloe; and menthone in mint. This work demonstrates that in vivo nanospray HR-MS is a good method for rapid in situ identification of bioactive compounds in plants.
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Affiliation(s)
- Qing Chang
- †State Key Laboratory of Biogeology and Environmental Geology, ‡Faculty of Materials Science and Chemistry, and #Faculty of Earth Sciences, China University of Geosciences, Wu Han 40074, China
| | - Yue'e Peng
- †State Key Laboratory of Biogeology and Environmental Geology, ‡Faculty of Materials Science and Chemistry, and #Faculty of Earth Sciences, China University of Geosciences, Wu Han 40074, China
| | - Conghui Dan
- †State Key Laboratory of Biogeology and Environmental Geology, ‡Faculty of Materials Science and Chemistry, and #Faculty of Earth Sciences, China University of Geosciences, Wu Han 40074, China
| | - Qin Shuai
- †State Key Laboratory of Biogeology and Environmental Geology, ‡Faculty of Materials Science and Chemistry, and #Faculty of Earth Sciences, China University of Geosciences, Wu Han 40074, China
| | - Shenghong Hu
- †State Key Laboratory of Biogeology and Environmental Geology, ‡Faculty of Materials Science and Chemistry, and #Faculty of Earth Sciences, China University of Geosciences, Wu Han 40074, China
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Srimany A, Jayashree B, Krishnakumar S, Elchuri S, Pradeep T. Identification of effective substrates for the direct analysis of lipids from cell lines using desorption electrospray ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:349-356. [PMID: 26406347 DOI: 10.1002/rcm.7111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 11/26/2014] [Accepted: 11/30/2014] [Indexed: 06/05/2023]
Abstract
RATIONALE Various disease conditions, particularly tumours, can be understood easily by studying changes in the lipid profile of cells. While lipid profiles of tissues have been recorded by desorption electrospray ionization mass spectrometric (DESI-MS) imaging, there is paucity in standardized protocols for sample preparation involving cell cultures to generate reliable results. In this study, we report a method for the direct analysis of lipids from cultured cells by incorporating them onto Whatman 42 filter paper as a substrate for reliable DESI-MS analysis. METHODS The WERI-RB1 cell line was spotted on commonly used substrates for DESI-MS analysis, such as glass slides, Teflon coated glass slides, thin layer chromatography (TLC) plates, and Whatman 42 filter paper. A comparison of mass spectrometric images with two different lipids was made to understand the behaviour of different surfaces when the same sample was spotted on them. Relative intensities of different lipid peaks in the WERI-RB1 cell line were compared and relative lipid abundances were also compared across two different human retinoblastoma cell lines; WERI-RB1 and Y79. RESULTS The study demonstrates that good lipid signals can be obtained by DESI-MS when the cells are spotted on Whatman 42 filter paper. Tandem mass spectrometry was performed to identify the lipids as glycerophosphocholines (PC). Better lipid images from assembly of cells were obtained with distinct boundary when they were spotted on Whatman 42 filter paper than other surfaces. CONCLUSIONS We demonstrate the use of a simple substrate for reliable DESI-MS analysis of cultured cells. This method has the potential to understand various interactions of cells with other external agents. The current method would help in the application of DESI-MS for biology in general and medical sciences in particular.
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Affiliation(s)
- Amitava Srimany
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Balasubramanyam Jayashree
- Department of Nanobiotechnology, Vision Research Foundation, Sankara Nethralaya, Chennai, 600006, India
| | - Subramanian Krishnakumar
- Department of Nanobiotechnology, Vision Research Foundation, Sankara Nethralaya, Chennai, 600006, India
| | - Sailaja Elchuri
- Department of Nanobiotechnology, Vision Research Foundation, Sankara Nethralaya, Chennai, 600006, India
| | - Thalappil Pradeep
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
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41
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Bataglion GA, Souza GHMF, Heerdt G, Morgon NH, Dutra JDL, Freire RO, Eberlin MN, Tata A. Separation of glycosidic catiomers by TWIM-MS using CO2 as a drift gas. JOURNAL OF MASS SPECTROMETRY : JMS 2015; 50:336-343. [PMID: 25800015 DOI: 10.1002/jms.3532] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 09/22/2014] [Accepted: 10/16/2014] [Indexed: 06/04/2023]
Abstract
Traveling wave ion mobility mass spectrometry (TWIM-MS) is shown to be able to separate and characterize several isomeric forms of diterpene glycosides stevioside (Stv) and rebaudioside A (RebA) that are cationized by Na(+) and K(+) at different sites. Determination and characterization of these coexisting isomeric species, herein termed catiomers, arising from cationization at different and highly competitive coordinating sites, is particularly challenging for glycosides. To achieve this goal, the advantage of using CO2 as a more massive and polarizable drift gas, over N2, was demonstrated. Post-TWIM-MS/MS experiments were used to confirm the separation. Optimization of the possible geometries and cross-sectional calculations for mobility peak assignments were also performed.
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Affiliation(s)
- Giovana A Bataglion
- ThoMSon Mass Spectrometry Laboratory, Institute of Chemistry, University of Campinas-UNICAMP, Campinas, SP, Brazil
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42
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Janfelt C. Imaging of plant materials using indirect desorption electrospray ionization mass spectrometry. Methods Mol Biol 2015; 1203:91-97. [PMID: 25361669 DOI: 10.1007/978-1-4939-1357-2_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Indirect desorption electrospray ionization mass spectrometry (DESI-MS) imaging is a method for imaging distributions of metabolites in plant materials, in particular leaves and petals. The challenge in direct imaging of such plant materials with DESI-MS is particularly the protective layer of cuticular wax present in leaves and petals. The cuticle protects the plant from drying out, but also makes it difficult for the DESI sprayer to reach the analytes of interest inside the plant material. A solution to this problem is to imprint the plant material onto a surface, thus releasing the analytes of interest from parts of their matrix while preserving the spatial information in the two dimensions. The imprint can then easily be imaged by DESI-MS. The method delivers simple and robust mass spectrometry imaging of plant material with very high success ratios.
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Affiliation(s)
- Christian Janfelt
- Section for Analytical Biosciences, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark,
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43
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Aranda-González I, Moguel-Ordoñez Y, Betancur-Ancona D. Determination of Rebaudioside A and Stevioside in Leaves of <i>S. rebaudiana</i> Bertoni Grown in México by a Validated HPLC Method. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ajac.2015.611083] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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44
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Determination of eight artificial sweeteners and common Stevia rebaudiana glycosides in non-alcoholic and alcoholic beverages by reversed-phase liquid chromatography coupled with tandem mass spectrometry. Anal Bioanal Chem 2014; 407:1505-12. [PMID: 25471292 PMCID: PMC4318983 DOI: 10.1007/s00216-014-8355-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 11/12/2014] [Accepted: 11/17/2014] [Indexed: 10/26/2022]
Abstract
The method for the determination of acesulfame-K, saccharine, cyclamate, aspartame, sucralose, alitame, neohesperidin dihydrochalcone, neotame and five common steviol glycosides (rebaudioside A, rebaudioside C, steviol, steviolbioside and stevioside) in soft and alcoholic beverages was developed using high-performance liquid chromatography and tandem mass spectrometry with electrospray ionisation (HPLC-ESI-MS/MS). To the best of our knowledge, this is the first work that presents an HPLC-ESI-MS/MS method which allows for the simultaneous determination of all EU-authorised high-potency sweeteners (thaumatin being the only exception) in one analytical run. The minimalistic sample preparation procedure consisted of only two operations; dilution and centrifugation. Linearity, limits of detection and quantitation, repeatability, and trueness of the method were evaluated. The obtained recoveries at three tested concentration levels varied from 97.0 to 105.7%, with relative standard deviations lower than 4.1%. The proposed method was successfully applied for the determination of sweeteners in 24 samples of different soft and alcoholic drinks.
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45
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Aranda-González I, Moguel-Ordoñez Y, Betancur-Ancona D. Validation of HPLC-UV method for determination of minor glycosides contained in Stevia rebaudiana Bertoni leaves. Biomed Chromatogr 2014; 29:733-8. [PMID: 25296637 DOI: 10.1002/bmc.3349] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 06/26/2014] [Accepted: 08/25/2014] [Indexed: 11/09/2022]
Abstract
Leaves of Stevia rebaudiana contain glycosides with sweetness and biological activity. However besides the major glycosides, there are other glycosides within extracts that may contribute to its activity, and therefore it is important to quantify them. In this work, an isocratic HPLC method was validated for determination of dulcoside A, steviolbioside, rebaudioside C and rebaudioside B. An HPLC method was performed using a C18 column (250 × 4.6 mm, particle size 5 µm) and a UV detector set at 210 nm. The mobile phase consisted of a 32:68 (v/v) mixture of acetonitrile and sodium phosphate buffer (10 mmol/L, pH 2.6), set to a flow rate of 1.0 mL/min. The calculated parameters were: sensitivity, linearity, limit of detection (LOD), limit of quantification (LOQ), accuracy and precision. The calibration curves were linear over the working range 25-150 µg/mL, with coefficient of correlation of ≥0.99 and coefficient of determination of ≥0.98. The LOD was 5.68-8.81 µg/mL, while the LOQ was 17.21-26.69 µg/mL. The percentage recoveries of fortified samples were 100 ± 10% and precision, relative standard deviation, was <10%. The method validation showed accuracy, linearity and precision; therefore this method can be applied for quantitative analysis of minor steviol glycosides in S. rebaudiana leaves.
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Affiliation(s)
- Irma Aranda-González
- Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Periférico Norte Km. 33.5, Tablaje Catastral 13615, Col. Chuburna de Hidalgo Inn., Mérida, Yucatán, C.P. 97203, Mexico
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46
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Bouslimani A, Sanchez LM, Garg N, Dorrestein PC. Mass spectrometry of natural products: current, emerging and future technologies. Nat Prod Rep 2014; 31:718-29. [PMID: 24801551 PMCID: PMC4161218 DOI: 10.1039/c4np00044g] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Although mass spectrometry is a century old technology, we are entering into an exciting time for the analysis of molecular information directly from complex biological systems. In this Highlight, we feature emerging mass spectrometric methods and tools used by the natural product community and give a perspective of future directions where the mass spectrometry field is migrating towards over the next decade.
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Affiliation(s)
- Amina Bouslimani
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California 92093, United States
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47
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Jarmusch AK, Cooks RG. Emerging capabilities of mass spectrometry for natural products. Nat Prod Rep 2014; 31:730-8. [PMID: 24700087 DOI: 10.1039/c3np70121b] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Covering up to the end of 2013 A brief history of mass spectrometry in natural products research serves to identify themes which have driven progress in this area of application and in mass spectrometry itself. This account covers six decades of ionization methods, starting with traditional electron ionization and progressing through today's ambient ionization methods. Corresponding developments in mass analyzers are indicated, ranging from sector magnetic fields, through hybrid quadrupole mass filters to miniature ion traps. Current capabilities of mass spectrometry in natural products studies include direct in situ analysis, mass spectrometry imaging, and the study of biosynthetic pathways using metabolomic information. The survey concludes with a discussion of new experiments and capabilities including ion soft landing, preparative mass spectrometry, and accelerated ionic reactions in confined volumes.
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Affiliation(s)
- Alan K Jarmusch
- Purdue University, Department of Chemistry, 560 Oval Drive, West Lafayette, IN, USA.
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48
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Rao W, Mitchell D, Licence P, Barrett DA. The use of dicationic ion-pairing compounds to enhance the ambient detection of surface lipids in positive ionization mode using desorption electrospray ionisation mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2014; 28:616-624. [PMID: 24519824 DOI: 10.1002/rcm.6826] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 01/02/2014] [Accepted: 01/04/2014] [Indexed: 06/03/2023]
Abstract
RATIONALE Lipids are typically analysed in negative ionisation mode in desorption electrospray ionisation mass spectrometry (DESI-MS), which can result in reduced sensitivity. In this study we examine the use of dicationic compounds as reactive DESI-MS agents to detect a range of lipid standards from the surface in positive ionisation mode. METHODS Nine dicationic compounds were tested for their ability to detect seven representative lipid species (palmitoleic acid, linoleic acid, phosphatidic acid (34:1), phosphoethanolamine (34:2), phosphatidylglycerol (34:1), phosphatidylserine (36:1), and phosphoinositol (34:2)) with a 2D DESI source on hydrophobic surfaces. Two different solvent systems (methanol/chloroform (1:1) and methanol) were tested with each dicationic compound, with the DESI-MS analysis performed in the positive ionisation mode. RESULTS Most of the dications tested were able to form stable ion-pairs with the negatively charged lipid species when analysed from the surface with DESI-MS, and were detected readily in positive ionisation electrospray mode as singly charged species. The optimal solvent system was found to be methanol. The dicationic compound [C6(C1Pyrr)2][Br]2 was found to enhance the detection of palmitoleic acid (638%), linoleic acid (304%) and phosphoethanolamine (269%) compared with the negative ionisation mode. CONCLUSIONS We demonstrate the first successful application of dicationic compounds in DESI-MS for the ambient surface detection of model lipids in positive electrospray ionisation mode. Dicationic compounds could potentially be used as reactive DESI-MS agents to improve the ambient detection of a number of negatively charged analytes.
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Affiliation(s)
- Wei Rao
- Centre for Analytical Bioscience, School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
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49
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Aranda-González I, Moguel-Ordoñez Y, Betancur-Ancona D. Rapid HPLC Method for Determination of Rebaudioside D in Leaves of <i>Stevia rebaudiana</i> Bertoni Grown in the Southeast of México. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/ajac.2014.513090] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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50
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Rao W, Celiz AD, Scurr DJ, Alexander MR, Barrett DA. Ambient DESI and LESA-MS analysis of proteins adsorbed to a biomaterial surface using in-situ surface tryptic digestion. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:1927-36. [PMID: 24048891 PMCID: PMC3837234 DOI: 10.1007/s13361-013-0737-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 08/20/2013] [Accepted: 08/20/2013] [Indexed: 05/04/2023]
Abstract
The detection and identification of proteins adsorbed onto biomaterial surfaces under ambient conditions has significant experimental advantages but has proven to be difficult to achieve with conventional measuring technologies. In this study, we present an adaptation of desorption electrospray ionization (DESI) and liquid extraction surface analysis (LESA) mass spectrometry (MS) coupled with in-situ surface tryptic digestion to identify protein species from a biomaterial surface. Cytochrome c, myoglobin, and BSA in a combination of single and mixture spots were printed in an array format onto Permanox slides, followed by in-situ surface digestion and detection via MS. Automated tandem MS performed on surface peptides was able to identify the proteins via MASCOT. Limits of detection were determined for DESI-MS and a comparison of DESI and LESA-MS peptide spectra characteristics and sensitivity was made. DESI-MS images of the arrays were produced and analyzed with imaging multivariate analysis to automatically separate peptide peaks for each of the proteins within a mixture into distinct components. This is the first time that DESI and LESA-MS have been used for the in-situ detection of surface digested proteins on biomaterial surfaces and presents a promising proof of concept for the use of ambient MS in the rapid and automated analysis of surface proteins.
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Affiliation(s)
- Wei Rao
- Centre for Analytical Bioscience, School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD UK
| | - Adam D. Celiz
- Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD UK
| | - David J. Scurr
- Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD UK
| | - Morgan R. Alexander
- Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD UK
| | - David A. Barrett
- Centre for Analytical Bioscience, School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD UK
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