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Transport of soluble surfactant on and within a foam film in the context of a foam fractionation process. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2022.118171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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2
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Wu Z, Li N, Zhang X, Xu Y, Shu T, Liu W, Hu B. Effective recovery of trans-resveratrol from the leaching solution of muscat grape pomace by developing a novel technology of foam fractionation. J FOOD ENG 2019. [DOI: 10.1016/j.jfoodeng.2018.07.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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3
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Liu W, Wu Z, Wang Y, Zheng H, Yin H. Modified β -CD-Cu ion complex and yam mucilage assisted batch foam fractionation for separating puerarin from Ge-gen ( Radix puerariae ). Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.11.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Xia B, Feng M, Xu G, Xu J, Li S, Chen X, Ding L, Zhou Y. Investigation of the chemical compositions in tobacco of different origins and maturities at harvest by GC-MS and HPLC-PDA-QTOF-MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:4979-87. [PMID: 24833170 DOI: 10.1021/jf5009204] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Tobacco samples of a same cultivar grown in different plantations in China were evaluated for their chemical compositions at different maturities for the first time. This was accomplished by a comprehensive and reliable method using gas chromatography-mass spectrometry (GC-MS) and high performance liquid chromatography-photodiode array-quadrupole time-of-flight mass spectrometry (HPLC-PDA-QTOF-MS) to analyze the fat-soluble and polar components in 12 batches of tobacco samples of three origins and four maturities. The GC-MS analyses showed that tobacco samples harvested at 40 days after transplantation exhibited more fat-soluble components, while those harvested at 100 days after transplantation exhibited the least fat-soluble components. Tentatively, identification of the main components as well as quantitative analyses of eight reference compounds, including five alkaloids, two polyphenols, and a coumarin, was performed by the developed HPLC-QTOF-PDA method. Results showed significant differences among origins and maturities in the contents of these compounds. The nicotine contents showed great variety among the 12 tobacco samples. The highest nicotine content were found in a sample from Zhengzhou harvested at 40 days after transplantation (ZZ-T with 25399.39 ± 308.95 μg/g), and the lowest nicotine level was detected in a sample from Zunyi harvested at 60 days after transplantation (ZY-X with 1654.49 ± 34.52 μg/g). The highest level of rutin was found in a Jiangchuan sample harvested at 60 days after transplantation (JC-X with 725.93 ± 40.70 μg/g), and the lowest rutin content was detected in a Zunyi tobacco sample harvested at 60 days after transplantation (ZY-X with 87.42 ± 2.78 μg/g). The developed method provided a convenient approach which might be applied for rapid maturity evaluation and tobacco flavor identification and also holds the potential for analysis of compounds present in other plants.
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Affiliation(s)
- Bing Xia
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences , No. 9 Section 4, Renmin South Road, Chengdu 610041, P.R. China
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Enrichment behavior of immunoglobulin by foam fractionation using response surface methodology. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2013.01.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li J, Wu Z, Li R. Technology of streptomycin sulfate separation by two-stage foam separation. Biotechnol Prog 2012; 28:733-9. [DOI: 10.1002/btpr.1543] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Revised: 03/18/2012] [Indexed: 11/09/2022]
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7
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Linke D, Berger R. Foaming of proteins: New prospects for enzyme purification processes. J Biotechnol 2011; 152:125-31. [DOI: 10.1016/j.jbiotec.2010.07.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 07/12/2010] [Accepted: 07/21/2010] [Indexed: 11/26/2022]
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Wang J, Lu D, Zhao H, Jiang B, Wang J, Ling X, Chai H, Ouyang P. Discrimination and classification of tobacco wastes by identification and quantification of polyphenols with LC-MS/MS. JOURNAL OF THE SERBIAN CHEMICAL SOCIETY 2010. [DOI: 10.2298/jsc091109055w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The chemical composition of polyphenols in tobacco waste was identified by HPLC-PAD-ESI/MS/MS and the contents of chlorogenic acids and rutin in 10 varieties of tobacco wastes were determined by HPLC-UV. The relationships between the contents of active polyphenols and the varieties of tobacco wastes were interpreted by hierarchical cluster analysis (HCA) and principal component analysis (PCA). The results showed that 15 polyphenols were identified in a methanolic extract of dried tobacco waste. The tobacco wastes were characterized by high levels of chlorogenic acids (3-CQA, 5-CQA, and 4-CQA) and rutin; their ranges in the 10 tobacco varieties were 0.116-0.196, 0.686-1.781, 0.094- 0.192, and 0.413-0.998 %, respectively. According to multivariate statistics models, two active compound variables can be considered important for the discrimination of the varieties of tobacco wastes: chlorogenic acids and rutin. Consequently, samples of 10 tobacco varieties were characterized into three groups by HCA based on the PCA pattern. In conclusion, tobacco waste could be used as a new pharmaceutical material for the production of natural chlorogenic acids and rutin in the ethnopharmacological industry.
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Affiliation(s)
- Jun Wang
- School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, P.R. China + School of Biotechnology and Environmental Engineering, Jiangsu University of Science and Technology, Zhenjiang, P.R. China
| | - Dingqiang Lu
- School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, P. R. China
| | - Hui Zhao
- School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, P. R. China
| | - Ben Jiang
- School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, P. R. China
| | - Jiali Wang
- School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, P. R. China
| | - Xiuquan Ling
- School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, P. R. China
| | - Hong Chai
- School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, P. R. China
| | - Pingkai Ouyang
- School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, P. R. China
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Wang J, Lu DQ, Ling XQ, Wang JL, Qiao HQ, Ouyang PK. Simultaneous Determination of Four Active Components in Tobacco Wastes by LC. Chromatographia 2008; 69:561-566. [PMID: 32214427 PMCID: PMC7087915 DOI: 10.1365/s10337-008-0908-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2008] [Revised: 09/26/2008] [Accepted: 10/27/2008] [Indexed: 11/05/2022]
Abstract
A liquid chromatographic method was developed for the simultaneous quantification of four major active components in tobacco (Nicotiana tobaccum L.) wastes. Samples were extracted with 70% v/v aqueous methanol, four compounds including chlorogenic acid, cryptochlorogenic acid, neochlorogenic acid and caffeic acid were identified and determined by using LC coupled to electrospray tandem mass spectrometry and LC-UV method, respectively. Separation in LC-UV was on an Alltima C18 column (250 mm × 4.6 mm i.d.; 5 μm) with a mobile phase consisting acetonitrile: ammonium acetate buffer (pH 4.5) (5:95 v/v), at a flow rate of 1.0 mL min-1, detected at 327 nm. Four regression equations showed good linear relationships (r 2 > 0.999) between the peak area of each marker and concentration. The method has good repeatability and precision, the intra-day and inter-day RSD for both retention time and peak area was less than 1.0%. The recoveries, measured at three concentration levels, varied from 96.33 to 101.10%. The LOD (S/N = 3) and LOQ (S/N = 6) were less than 0.010 and 0.795 μg·mL-1, respectively. This assay was successfully applied to the determination of four active compounds in ten samples. The results indicated that the developed assay method was rapid, accurate, reliable and could be readily utilized as a quantitative analysis method for various of tobacco wastes.
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Affiliation(s)
- Jun Wang
- 1College of Life Science and Pharmaceutical Engineering, Nanjing University of Technology, 210009 Nanjing, People's Republic of China
| | - Ding-Qiang Lu
- 1College of Life Science and Pharmaceutical Engineering, Nanjing University of Technology, 210009 Nanjing, People's Republic of China.,Jiangsu Provincial Institute of Materia Medica, 210009 Nanjing, People's Republic of China
| | - Xiu-Quan Ling
- 1College of Life Science and Pharmaceutical Engineering, Nanjing University of Technology, 210009 Nanjing, People's Republic of China
| | - Jia-Li Wang
- 1College of Life Science and Pharmaceutical Engineering, Nanjing University of Technology, 210009 Nanjing, People's Republic of China
| | - Hong-Qun Qiao
- 1College of Life Science and Pharmaceutical Engineering, Nanjing University of Technology, 210009 Nanjing, People's Republic of China.,Jiangsu Provincial Institute of Materia Medica, 210009 Nanjing, People's Republic of China
| | - Ping-Kai Ouyang
- 1College of Life Science and Pharmaceutical Engineering, Nanjing University of Technology, 210009 Nanjing, People's Republic of China
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Lin HC, Chou YH, Yang J. Development of an aminocarboxylic acid-modified infrared chemical sensor for selective determination of tyrosine in urine. Anal Chim Acta 2008; 606:230-8. [DOI: 10.1016/j.aca.2007.11.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Revised: 11/08/2007] [Accepted: 11/09/2007] [Indexed: 01/17/2023]
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11
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Zhao C, Li C, Zu Y. Rapid and quantitative determination of solanesol in Nicotiana tabacum by liquid chromatography-tandem mass spectrometry. J Pharm Biomed Anal 2007; 44:35-40. [PMID: 17317070 DOI: 10.1016/j.jpba.2007.01.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2006] [Revised: 01/11/2007] [Accepted: 01/11/2007] [Indexed: 11/26/2022]
Abstract
A rapid and sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method with multiple reaction monitoring (MRM) was developed for the determination of solanesol in Nicotiana tabacum. Sample preparation was performed by ultrasonic extraction with methanol for 20 min and then supernatant was extracted with hexane. The method used atmospheric pressure chemical ionization (APCI) detection in positive-ion mode. The separation of solanesol was performed on a Symmetry Shield RP18 column with a mixture of acetonitrile and isopropanol (1:1, v/v) containing 2mM ammonium acetate as mobile phase. Quantification of solanesol was performed by the standard addition method. The limit of quantification (LOQ) and limit of detection (LOD) of solanesol were, respectively, 5.0 ng/ml (S/N=10) and 1.5 ng/ml (S/N=3). The relative standard deviations of peak area were 0.89 and 1.12% for intra-day and inter-day, respectively. The recoveries of solanesol ranged from 97.72 to 99.67% and the corresponding R.S.D.s were less than 2.7%. Analysis took 5 min, making the method suitable for rapid determination of solanesol in N. tabacum. The proposed method has been successfully applied to the analysis of solanesol in various organs of N. tabacum.
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Affiliation(s)
- Chunjian Zhao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
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Gerken BM, Wattenbach C, Linke D, Zorn H, Berger RG, Parlar H. Tweezing-Adsorptive Bubble Separation. Analytical Method for the Selective and High Enrichment of Metalloenzymes. Anal Chem 2005; 77:6113-7. [PMID: 16194067 DOI: 10.1021/ac050977s] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novelly developed tweezing-adsorptive bubble separation (ABS) method for the enrichment of metalloenzymes (laccase C and horseradish peroxidase) is introduced. The method is based on the chelation of the enzymes' active center and can also be applied for analysis. N-(2-acetamido)iminodiacetic acid served as a chelator and was synthesized with an octyl unit to become ADA-C8. Laccase was enriched 13.3-fold (66.31% recovery) and HPOX 17.8-fold (85.34%) without a significant loss of enzymatic activity. To prove that the entire enzyme is tweezed at the active center, ABS trials were done using ADA-C8 already complexed with Cu2+ and Fe3+. As only marginal enrichment occurred (ER laccase, 0.17; ER HPOX, 0.44), no chelating effect was concluded. It was determined how the chelation toward the active center was directed by applying other chelators such as EDTA, NTA, N,N-dimethylaminoglycine, oxalic acid, malonic acid, adipinic acid, and tripropylamine, which are similar in structure to ADA-C8. The results concluded that the chelation is 3-fold coordinated on the type 1 copper center of laccase, whereas that of HPOX only 1-fold at Fe3+ and additionally at the cationic amino acid arginine, which is also located at the active center. Tweezing-ABS has been proven to selectively and effectively enrich metalloenzymes.
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Affiliation(s)
- Birte M Gerken
- Department of Chemical-Technical Analysis and Chemical Food Technology, Research Center Weihenstephan for Brewing and Food Quality, Technical University of Munich, Weihenstephaner Steig 23, D-85354 Freising-Weihenstephan, Germany
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Chen M, Liu X, Wang Z, Song J, Qi Q, Wang PG. Modification of plant N-glycans processing: The future of producing therapeutic protein by transgenic plants. Med Res Rev 2005; 25:343-60. [PMID: 15499575 DOI: 10.1002/med.20022] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Transgenic plants are regarded as one of the most promising systems for the production of human therapeutic proteins. The number of therapeutic proteins successfully produced in plants is steadily arising. However, the glycoproteins normally produced from plants are not the same as native therapeutic proteins produced from mammals or humans. In addition to in vitro enzymatic modeling glycoproteins, there are two gene manipulation strategies to humanize plant N-glycans connected to the glycoproteins. One is retaining the recombinant glycoproteins in endoplasmic reticulum (ER), the site where few specific modifications of N-glycans occurs. The other is inhibiting the plant endogenous Golgi glycosyltransferase and/or adding new glycosyltransferase from mammalians. In this review, the biosynthesis of N-glycans in plants, the modification of the plant N-glycans processing will be discussed.
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Affiliation(s)
- Min Chen
- The State Key Laboratory of Microbial Technology, School of Life Science, Shandong University, Jinan, Shandong 250100, P.R. China
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MacRae AF, Preiszner J, Ng S, Bolla RI. Expression of His-tagged Shigella IpaC in Arabidopsis. J Biotechnol 2004; 112:247-53. [PMID: 15313002 DOI: 10.1016/j.jbiotec.2004.04.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2003] [Revised: 04/14/2004] [Accepted: 04/14/2004] [Indexed: 11/22/2022]
Abstract
Although the expression of histidine (His)-tagged proteins in bacteria is routine, few His-tagged proteins have been expressed in plants, and no His-tagged proteins from bacterial pathogens have been expressed in plants, to our knowledge. Here, we demonstrate expression of the Shigella flexneri invasion plasmid antigen, IpaC, in Arabidopsis thaliana. S. flexneri is the causitive trigger for bacillary dysentery, and IpaC is essential for bacterial entry into epithelial cells. IpaC, attached to a 5' leader containing six tandem His codons, was cloned into a pBI121 vector. This clone was introduced into Agrobacterium tumefaciens and Arabidopsis plants were then transformed. T1 and T2 plant generations were obtained. Total plant proteins were extracted from T2 leaves; the Bradford assay was used to determine protein concentrations. A nickel-coated ELISA plate method, using both anti-His and anti-IpaC 1 degrees antibodies, was used to detect and quantify IpaC in transgenic Arabidopsis plants. Between 1.9 and 2.3 microg IpaC/mg total plant protein was obtained; this equals 0.2% of total protein, an amount comparable to other recombinant protein estimates in plants. Expressing His-tagged proteins from bacterial pathogens, in plants, is important because plant material could ultimately be fed or applied intranasally to animals that are "at risk" for infection by such bacterial pathogens, thus causing them to raise antibodies against the pathogens--functioning as a vaccine.
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Affiliation(s)
- Amy F MacRae
- Department of Biology, 128 Macelwane Hall, Saint Louis University, 3507 Laclede Avenue, Saint Louis, MO 63103, USA.
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Fischer R, Stoger E, Schillberg S, Christou P, Twyman RM. Plant-based production of biopharmaceuticals. CURRENT OPINION IN PLANT BIOLOGY 2004; 7:152-8. [PMID: 15003215 DOI: 10.1016/j.pbi.2004.01.007] [Citation(s) in RCA: 337] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Plants are now gaining widespread acceptance as a general platform for the large-scale production of recombinant proteins. The first plant-derived recombinant pharmaceutical proteins are reaching the final stages of clinical evaluation, and many more are in the development pipeline. Over the past two years, there have been some notable technological advances in this flourishing area of applied biotechnology, as shown by the continuing commercial development of novel plant-based expression platforms. There has also been significant success in tackling some of the limitations of plant bioreactors, such as low yields and inconsistent product quality, that have limited the approval of plant-derived pharmaceuticals.
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Affiliation(s)
- Rainer Fischer
- Institute for Molecular Biotechnology, Biology VII, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany
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