Lopez, BGC., Marcucci, MC., Rocco, SA., Sforça, ML., Eberlin, MN., Hewitson, P., Ignatova, S. and Sawaya, ACHF. et al. (2024) 'Preparative Fractionation of Brazilian Red Propolis Extract Using Step-Gradient Counter-Current Chromatography'. Molecules, 29 (12). pp. 2757 - 2757. ISSN: 1420-3049

Silva, FL., Moreno, PRH., Sawaya, ACHF., de Freitas Lemeszenki, GC., Hewitson, P. and Ignatova, S. (2022) 'Dereplication of Phenolics from Cardiospermum corindum by Countercurrent Chromatography Combined with Liquid Chromatography-Electrospray Mass Spectrometry'. Revista Brasileira de Farmacognosia, 32 (2). pp. 280 - 285. ISSN: 0102-695X

Rehman, R., Zubair, M., Bano, A., Hewitson, P. and Ignatova, S. (2021) 'Isolation of industrially valuable α-Cedrol from essential oil of Platycladus orientalis (Thuja orientalis) leaves using linear gradient counter current chromatography'. Industrial Crops and Products, 176. pp. 114297 - 114297. ISSN: 0926-6690

Suleman, S., Schrubaji, K., Filippou, C., Ignatova, S., Hewitson, P., Huddleston, J., Karda, R., Waddington, SN. and Themis, M. et al. (2021) 'Rapid and inexpensive purification of adenovirus vectors using an optimised aqueous two-phase technology'. Journal of Virological Methods, 299. pp. 1 - 9. ISSN: 0166-0934 Open Access Link

das Neves Costa, F., Jerz, G., Hewitson, P., de Souza Figueiredo, F. and Ignatova, S. (2021) 'Laguncularia racemosa phenolics profiling by three-phase solvent system step-gradient using high-performance countercurrent chromatography with off-line electrospray mass-spectrometry detection'. Molecules, 26 (8). pp. 1 - 17. ISSN: 1420-3049 Open Access Link

Peng, A., Hewitson, P., Sutherland, IA., Chen, L. and Ignatova, S. (2018) 'The effect of increasing centrifugal acceleration/force and flow rate for varying column aspect ratios on separation efficiency in Counter-Current Chromatography'. Journal of Chromatography A, 1581-1582. pp. 80 - 90. ISSN: 0021-9673 Open Access Link

Peng, A., Hewitson, P., Sutherland, I., Chen, L. and Ignatova, S. (2018) 'How changes in column geometry and packing ratio can increase sample load and throughput by a factor of fifty in Counter-Current Chromatography'. Journal of Chromatography A, 1580. pp. 120 - 125. ISSN: 0021-9673 Open Access Link

DeAmicis, C., Yang, Q., Bright, C., Edwards, NA., Harris, GH., Kaur, S., Wood, PL., Hewitson, P. and Ignatova, S. et al. (2017) 'Development of a Scalable and Sustainable High Performance CounterCurrent Chromatography (HPCCC) Purification for Spinosyn A and Spinosyn D from Spinosad'. Organic Process Research and Development, 21 (10). pp. 1638 - 1643. ISSN: 1083-6160 Open Access Link

Cardenas-Fernandez, M., Bawn, M., Bennett, C., Penumathsa, B., Subrizi, F., Suhaili, N., Ward, D., Bourdin, S., Dalby, PA., Hailes, H., Hewitson, P., Ignatova, S., Kontoravdi, C., Leak, DJ., Shah, N., Sheppard, T., Ward, JM. and Lye, GJ. et al. (2017) 'An Integrated Biorefinery Concept for Conversion of Sugar Beet Pulp into Value-added Chemicals and Pharmaceutical Intermediates'. Faraday Discuss., 202. pp. 415 - 431. ISSN: 1359-6640 Open Access Link

Ward, DP., Hewitson, P., Cárdenas-Fernández, M., Hamley-Bennett, C., Díaz-Rodríguez, A., Douillet, N., Adams, JP., Leak, DJ., Ignatova, S. and Lye, GJ. et al. (2017) 'Centrifugal partition chromatography in a biorefinery context: Optimisation and scale-up of monosaccharide fractionation from hydrolysed sugar beet pulp'. Journal of Chromatography A, 1497. pp. 56 - 63. ISSN: 0021-9673 Open Access Link

das Neves Costa, F., Hubert, J., Borie, N., Kotland, A., Hewitson, P., Ignatova, S. and Renault, JH. et al. (2017) 'Schinus terebinthifolius countercurrent chromatography (Part III): Method transfer from small CCC column to preparative CPC ones as a part of method development'. Journal of Chromatography A, 1487. pp. 77 - 82. ISSN: 0021-9673 Open Access Link

de Souza Figueiredo, F., Celano, R., de Sousa Silva, D., das Neves Costa, F., Hewitson, P., Ignatova, S., Piccinelli, AL., Rastrelli, L., Guimarães Leitão, S. and Guimarães Leitão, G. et al. (2016) 'Countercurrent chromatography separation of saponins by skeleton type from Ampelozizyphus amazonicus for off-line ultra-high-performance liquid chromatography/high resolution accurate mass spectrometry analysis and characterisation.'. Journal of chromatography. A, 1481. pp. 92 - 100. ISSN: 0021-9673 Open Access Link

Peng, A., Hewitson, P., Ye, H., Zu, L., Garrard, I., Sutherland, I., Chen, L. and Ignatova, S. et al. (2016) 'Sample injection strategy to increase throughput in counter-current chromatography: Case study of Honokiol purification'. Journal of Chromatography A, 1476. pp. 19 - 24. ISSN: 0021-9673 Open Access Link

Costa, FD., Vieira, MN., Garrard, I., Hewitson, P., Jerz, G., Leitão, GG. and Ignatova, S. et al. (2016) 'Schinus terebinthifolius countercurrent chromatography (Part II): Intra-apparatus scale-up and inter-apparatus method transfer.'. Journal of chromatography A, 1466. pp. 76 - 83. ISSN: 0021-9673 Open Access Link

Cheel, J., Bogdanová, K., Ignatova, S., Garrard, I., Hewitson, P., Kolář, M., Kopecký, J., Hrouzek, P. and Vacek, J. et al. (2016) 'Dimeric cyanobacterial cyclopent-4-ene-1,3-dione as selective inhibitor of Gram-positive bacteria growth: Bio-production approach and preparative isolation by HPCCC'. Algal Research, 18. pp. 244 - 249. ISSN: 2211-9264 Open Access Link

Huang, X-Y., Ignatova, S., Hewitson, P. and Di, D-L. (2016) 'An overview of recent progress in elution mode of counter current chromatography'. TRAC-TRENDS IN ANALYTICAL CHEMISTRY, 77. pp. 214 - 225. ISSN: 0165-9936 Open Access Link

Guan, YH., Hewitson, P., van den Heuvel, RNAM., Zhao, Y., Siebers, RPG., Zhuang, Y-P. and Sutherland, I. et al. (2015) 'Scale-up protein separation on stainless steel wide bore toroidal columns in the type-J counter-current chromatography'. JOURNAL OF CHROMATOGRAPHY A, 1424. pp. 102 - 110. ISSN: 0021-9673 Open Access Link

Ward, DP., Cárdenas-Fernández, M., Hewitson, P., Ignatova, S. and Lye, GJ. (2015) 'Centrifugal partition chromatography in a biorefinery context: Separation of monosaccharides from hydrolysed sugar beet pulp'. Journal of Chromatography A, 1411. pp. 84 - 91. ISSN: 0021-9673 Open Access Link

Vieira, MN., Costa, FDN., Leitão, GG., Garrard, I., Hewitson, P., Ignatova, S., Winterhalter, P. and Jerz, G. et al. (2015) 'Schinus terebinthifolius scale-up countercurrent chromatography (Part I): HIGH performance countercurrent chromatography fractionation of triterpene acids with off-line detection using atmospheric pressure chemical ionization mass spectrometry'. Journal of Chromatography A, 1389. pp. 39 - 48. ISSN: 0021-9673

Adhami, HR., Zehl, M., Dangl, C., Dorfmeister, D., Stadler, M., Urban, E., Hewitson, P., Ignatova, S. and Krenn, L. et al. (2014) 'Preparative isolation of oleocanthal, tyrosol, and hydroxytyrosol from olive oil by HPCCC'. Food Chemistry, 170. pp. 154 - 159. ISSN: 0308-8146

Hewitson, P., Sutherland, I., Kostanyan, AE., Voshkin, AA. and Ignatova, S. (2013) 'Intermittent counter-current extraction-Equilibrium cell model, scaling and an improved bobbin design'. Journal of Chromatography A, 1303. pp. 18 - 27. ISSN: 0021-9673

Sutherland, I., Thickitt, C., Douillet, N., Freebairn, K., Johns, D., Mountain, C., Wood, P., Edwards, N., Rooke, D., Harris, G., Keay, D., Mathews, B., Brown, R., Garrard, I., Hewitson, P. and Ignatova, S. et al. (2013) 'Scalable Technology for the Extraction of Pharmaceutics: Outcomes from a 3 year collaborative industry/academia research programme'. Journal of Chromatography A, 1282. pp. 84 - 94. ISSN: 0021-9673 Open Access Link

Kostanyan, AE., Ignatova, SN., Sutherland, IA., Hewitson, P., Zakhodjaeva, ZA. and Erastov, AA. (2013) 'Steady-state and non-steady state operation of counter-current chromatography devices'. Journal of Chromatography A, in press. pp. 94 - 105. ISSN: 0021-9673

Hewitson, P., Ignatova, S. and Sutherland, I. (2011) 'Intermittent counter-current extraction-Effect of the key operating parameters on selectivity and throughput'. Journal of Chromatography A, 1218 (36). pp. 6072 - 6078. ISSN: 0021-9673

Sutherland, I., Ignatova, S., Hewitson, P., Janaway, L., Wood, P., Edwards, N., Harris, G., Guzlek, H., Keay, D., Freebairn, K., Johns, D., Douillet, N., Thickitt, C., Vilminot, E. and Mathews, B. et al. (2011) 'Scalable technology for the extraction of pharmaceutics (STEP): The transition from academic knowhow to industrial reality'. Journal of Chromatography A, 1218 (36). pp. 6114 - 6121. ISSN: 1873-3778

Ignatova, S., Hewitson, P., Mathews, B. and Sutherland, I. (2011) 'Evaluation of dual flow counter-current chromatography and intermittent counter-current extraction'. Journal of Chromatography A, 1218 (36). pp. 6102 - 6106. ISSN: 0021-9673

Sutherland, IA., Hewitson, P. and De Folter, J. (2011) 'Toroidal coil chromatography: The effect of scale-up and "g" field on stage efficiency'. Journal of Chromatography A, 1218 (36). pp. 6144 - 6147. ISSN: 1873-3778 Open Access Link

Sutherland, I., Hewitson, P., Siebers, R., van den Heuvel, R., Arbenz, L., Kinkel, J. and Fisher, D. et al. (2011) 'Scale-up of protein purifications using aqueous two-phase systems: Comparing multilayer toroidal coil chromatography with centrifugal partition chromatography'. Journal of Chromatography A, 1218 (32). pp. 5527 - 5530. ISSN: 0021-9673

Sutherland, I., Hewitson, P., Siebers, R., van den Heuvel, R., Arbenz, L., Kinkel, J. and Fisher, D. et al. (2011) 'Scale-up of protein purifications using aqueous two-phase systems: Comparing multilayer toroidal coil chromatography with centrifugal partition chromatography'. Journal of Chromatography A, 1218 (32). pp. 5527 - 5530. ISSN: 0021-9673

Hewitson, P., Ignatova, S. and Sutherland, I. (2011) 'Intermittent counter-current extraction-effect of the key operating parameters on selectivity and throughput'. Journal of Chromatography A, 1218 (36). pp. 6072 - 6078. ISSN: 0021-9673

DeAmicis, C., Edwards, NA., Giles, MB., Harris, GH., Hewitson, P., Janaway, L. and Ignatova, S. et al. (2011) 'Comparison of preparative reversed phase liquid chromatography and countercurrent chromatography for the kilogram scale purification of crude spinetoram insecticide'. Journal of Chromatography A, 1218 (36). pp. 6122 - 6127. ISSN: 0021-9673

Winscom, C., Hewitson, P. and Newington, I. (2010) 'Transparent conductive system'. Available at: http://www.freepatentsonline.com/7695648.html.

Winscom, C., Hewitson, P. and Newington, I. (2010) 'Transparent conductive system'. Available at: http://www.europatentbox.com/patent/EP1925002B1/description/280841.html.

Slater, SD., Fyson, JR., Rider, CB., Clarke, DT., Winkel, JF. and Hewitson, P. (2010) 'Method of forming flexible electronic circuits'. Available at: http://www.freepatentsonline.com/7648821.html.

Ignatova, S., Hawes, D., van den Heuvel, R., Hewitson, P. and Sutherland, IA. (2010) 'A new non-synchronous preparative counter-current centrifuge – the next generation of dynamic extraction/chromatography devices with independent mixing and settling control, which offer a step change in efficiency'. Journal of Chromatography A, 1217 (1). pp. 34 - 39. ISSN: 0021-9673

Sutherland, IA., Hewitson, P. and Ignatova, S. (2009) 'Scale-up of counter-current chromatography: Demonstration of predictable isocratic and quasi-continuous operating modes from the test tube to pilot/process scale'. Journal of Chromatography A, 1216 (50). pp. 8787 - 8792. ISSN: 0021-9673

Brooks, AS., Slater, SD. and Hewitson, P. (2009) 'Method of forming flexible electronic circuits'. Available at: http://www.freepatentsonline.com/7563564.html.

Hewitson, P., Evans, GB., Winscom, CJ., Wells, LR. and Loveridge, JC. (2009) 'Three dimensional images'. Available at: http://www.freepatentsonline.com/7561730.html.

Sutherland, IA., Hewitson, P. and Ignatova, S. (2009) 'New 18-l process-scale counter-current chromatography centrifuge'. Journal of Chromatography A, 1216 (19). pp. 4201 - 4205. ISSN: 0021-9673

Hewitson, P., Ignatova, S., Ye, H., Chen, L. and Sutherland, I. (2009) 'Intermittent counter-current extraction as an alternative approach to purification of Chinese herbal medicine'. Journal of Chromatography A, 1216 (19). pp. 4187 - 4192. ISSN: 0021-9673

Guan, YH., Bourton, EC., Hewitson, P., Sutherland, IA. and Fisher, D. (2009) 'The importance of column design for protein separation using aqueous two-phase systems on J-type countercurrent chromatography'. Separation and Purification Technology, 65 (1). pp. 79 - 85. ISSN: 1383-5866

Winscom, CJ., Fyson, JR., Hewitson, P. and Slater, SD. (2008) 'Method of forming conductive tracks'. Available at: http://www.freepatentsonline.com/7449286.html.

Sutherland, IA., Audo, G., Bourton, E., Couillard, F., Fisher, D., Garrard, I., Hewitson, P. and Intes, O. et al. (2008) 'Rapid linear scale-up of a protein separation by centrifugal partition chromatography'. Journal of Chromatography A, 1190 (1-2). pp. 57 - 62. ISSN: 0021-9673

Evans, GB. and Hewitson, P. (2006) 'Washing method and apparatus'. Available at: http://www.freepatentsonline.com/7018115.html.

Evans, G., Wells, LR., Hewitson, P. and Fyson, JR. (2005) 'Counter current washing'. Available at: http://www.freepatentsonline.com/EP1341037.html.

Fyson, JR., Evans, GB., Hewitson, P. and Kapecki, J. (2003) 'A method of producing a photographic image'. Available at: http://www.ipo.gov.uk/p-find-number/patents?csbpub=GB2365139&csbtype=F.

Fyson, JR., Evans, GB. and Hewitson, P. (2003) 'Method of processing photographic material'. Available at: http://www.freepatentsonline.com/6513995.html.

Fyson, JR., Evans, GB., Hewitson, P. and Kapecki, JA. (2002) 'Method of producing a photographic image'. Available at: http://www.freepatentsonline.com/6479223.html.

Jarvis, JR. and Hewitson, P. (1996) 'Estimating the size and profile of diffuse dye clouds in colour negative film'. Journal of Photographic Science, 44 (4). pp. 105 - 109. ISSN: 0022-3638