Laboratory services

Industry-targeted research & development in the fields of:

  • food biotechnology and microbiology,
  • functional foods (innovative products and technologies),
  • fermentation processes,
  • biopolymers of microorganism origin (for food industry, health, packaging manufacturing),
  • microbiology and biotechnology of renewable resources (biodegradation & waste recycling technologies).

Current activities

The main research activities carried out in the laboratory of food biotechnology and industrial microbiology cover a broad scope of applied investigations in modulation of metabolism of lactic acid bacteria, yeasts and acetic acid bacteria, aiming at enhancement of functional characteristics of food due to increase of production of physiologically active substances during the fermentation process. A number of strain-specific responses of the probiotic lactic acid bacteria to the addition of fructans as prebiotic additives were detected, and modified to achieve fermentation conditions for optimal composition of probiotic starters.

Recent successful participation of the laboratory in the National Research Program of agrobiotechnology ‘Innovative technologies for high-quality, safe and healthy food production from the genetic, physiological and biochemical varied plant and animal material’ by implementation of the project activity ‘Production, investigation and application of the concentrates with physiologically active functional food components’ has lead to obtaining of concentrates with high content of biologically active substances from local natural raw materials and their application as additives for new functional food products under patent conditions.

 

Team

Pāvel Semjonovs, Dr.biol., Mg.oec.. Leading Researcher, Head of Laboratory
Ilze Deniņa, Dr. biol. Researcher
Lilija Auziņa, Dr. biol. Leading Researcher
Aleksejs Daņiļevičs, Dr. biol. Leading Researcher
Māra Grūbe, Dr. biol. Leading Researcher
Maija Rukliša, Dr. habil. biol. Leading Researcher
Ilmāra Vīna, Dr. biol. Leading Researcher
Longina Paegle, Dr. biol. Researcher
Rita Treimane, Dr. biol. Researcher
Ļaisana Šakirova, Dr. biol. Researcher
Andris Upītis, Dr. biol. Researcher
Arisa Fomina, Dr. biol. Researcher
Rita Ščerbaka, M.Chem. Researcher
Raimonds Linde, M.Chem. Researcher
Dagnija Upīte, M.Chem. Research assistant
Artūrs Patetko, B.Sc. 

Equipmentoperatingengineer

Astrīda Akopjana  Laboratory assistant

 

Projects

Application of natural associations of microorganisms for the acquisition of polyfunctional synbiotic drinks of mass consumption and their concentrates” (2009-2013) ERAF project No 2010/0322/2DP/2.1.1.1.0/10/APIA/VIAA/108 (Latvia University of Agriculture, Faculty of Food Technology)

Within the project the dry starter cultures of the natural associations of microorganisms will be acquired which in their turn will be used for the acquisition of the polyfunctional symbiotic fermented drinks. By testing various substrates several recipes of fermented drinks will be created and the fermentation conditions will be optimized. Afterwards the technology will be designed for the acquisition of the concentrates of the fermented drinks. To provide for the non-waste technological cycle the ways will be found for using the microorganism biomass synthesized in the process fermentation: the recipes of food supplements and fodder additives will be designed.

ESF activity 1.1.1.2. “Attraction of Human Resources to Science",  Project „Establishment of food sector scientific research group

Concentrates of physiologically active substances obtaining, investigation and use from functional  foods” (VPP Nr. 9) (2006-2009)

Biotechnology for obtain concentrates of biologically active substances from non-traditional raw materials and use its; new aspects of bioethanol obtaining”. Latvian Council of Science,(2006-2009).

Alternatīvie cianīdrezistences mehānismi baktērijās”. Latvian Council of Science, (2006-2008)

Control of the intracellular precursor availability and amino acid (valine and lysine) overproduction in genetically modified Corynebacterium glutamicum strains”. Latvian Council of Science,  (2006-2008).

Fructans for upkeep of homeostasis and metabolism standard: structure-function and use studies”.Latvian Council of Science,(2006-2008)

Monitoring of  biotechnological processes by the  main biochemical component changes  in biomass and  extracellular products under different fermentation conditions”. Latvian Council of Science,(2006-2008).

Construction of Corynebacterium strains producing either L-valine or D-pantothenic acid- a rational approach using genome research”. Latvian Council of Science, (2006-2008).

"Microbial biosynthesis of biologically active compounds". Latvian Academy of Sciences (1985-1993)

 "Biosynthesis of primary metabolites and storage polymers by Zymomonas mobilis and Lactobacillus; influence of medium osmolality and turbidity". Latvian Council of Science (1991-1996)

 "Technological properties of grain produced in Latvia". Ministry of Agriculture. (1994-1995)

 "Plant juices as raw material for biotechnology". (Project in cooperation with South Jitland University) (1994-1996)

 "Growth Control Mechanism in Corynebacterium glutamicum". Latvian Council of Science (1994-1996)

 "L-lysine production using byproducts of distillery". ALKO, Finland. (1990-1993).

 "Extracellular product synthesis by Zymomonas mobilis using immobilized cell systems and physiology of immobilized culture". Latvian Council of Science (1997-2000).

 "Development of technologies for biofuel production in conditions of Latvia". Latvian Council of Science (1997-2000).

 "Substrate Transport and Product Export Systems in Corynebacterium glutamicum: Biochemical Aspects of their control". Latvian Council of Science (1997-2000)

 "Coordination of the Activity of Glucose Transport and Lysine Export Systems in Corynebacterium glutamicum". Latvian Council of Science (1997-2001)

 "Concept evaluation for fuel - bioethanol - production in Latvia" (Agreement with environment Protection Foundation) (1999)

 „Regulatory Phenomena of the Central Metabolism in Valine and Lysine Producing C. glutamicum Strains". Latvian Council of Science (2001-2003)

 "Bioreactor for sucrose conversion". Ministry of Education and Sciences (2002)

 "The biotechnological conversion of renewable resources and use of its products". Latvian Council of Science (2002-2005)

 "Modified fructans as regulators of the main stages of immunity: relations of norm and pathology" Latvian Council of Science (2001-2004).

 "Fructans and imunopathogenesis of malignant lymphoproliferative diseases: functions of immunocompetent cells; citokines and molecular regulation" Latvian Council of Science (2001-2004).

 "Construction of Corynebacterium glutamicum Strains Producing Either L-Valine or D-Pantothenic Acid - a Rational Approach Using Genome Research (VALPAN)". Project of EF5 Program "Quality of Life", financed by Europen Commission (Contract No.QLK3 - CT - 2000 - 00497, (2001-2004)

 „Jaunu funkcionālo piena produktu ieguves tehnoloģijas izstrāde, izmantojot fruktānus”. Latvian Council of Science (2004-2005)

 „Imūnmodulatorus un antioksidantus saturošu uztura bagātinātāju izstrāde un ieviešana ražošanā”. Latvian Council of Science (2004-2005)

 

Main results

  •  
  • Application of the natural microorganism associations for production of polyfunctional synbiotic drinks and their concentrates
  • Prebiotic exopolysaccharydes-producing cultures of lactic acid bacteria for synbiotic foods
  • Technology for appropriate fermentation conditions of Jerusalem artichoke powder based media to obtain light beverage containing inulin.
  • Wasteless technology for topinambour concentrate production.
  • Ethanol and levan biosynthesis are investigated by Zymomonas mobilis in free and immobilized cell systems.
  • Method for cells immobilization on surface of stainless steel wire and fixing them in large pores was worked out.
  • Technology for fructan syrup production from sucrose by Zymomonas mobilis bacteria was developed.
  • Closed and semiclosed biotechnological systems and models for biofuel production are developed.
  • Probiotic bacteria and grain products as consistuents of polyfunctional food products are investigated.
  • Technology of oat and fat-free milk based on the functional food product - "oat bio lacto".
  • Study of immunomodulating mechanisms of fructose polymer levan, synthesized by bacteria Zymomonas mobilis, as well as, products of its chemical modification, on the human cellular cultures in vitro.
  • The extensive investigation of the functional activity of different immunocompetent cells allowed to characterize the immunoregulation properties of levan and its derivatives.
  •  The structures of native and modified fructose chains were studied, designed and interpreted by computational method for carbohydrate modeling using special program "HyperChem".
  • Mechanisms controlling growth rate and lysine biosynthesis by different Corynebacterium glutamicum strains were investigated.
  •  Mechanisms controlling the activity of sugar-PTS and key enzymes of central metabolic pathways of Corynebacterium glutamicum were investigated.
  • Technologies of lysine biosynthesis by different Corynebacterium glutamicum strains, based on these principles of the control of bacterial growth and intracellular metabolite fluxes, were developed.
  • Physiology and biochemistry of valine biosynthesis by genetically constructed valine producing Corynebacterium glutamicum strains were investigated. Intracellular regulatory phenomena under conditions of decrease in bacterial growth rate of valine producing bacteria were investigated.
  • Infrared (IR) spectroscopy has been applied for studies of bacteria, yeasts, fungi and its products, functional food components and monitoring of fermentation processes using an advanced FT-IR techniques including microplate reader HTS-XT and IR-microscope Hyperion.
  • IR spectroscopy was successfully used for quantitative and qualitative analyses of different functional food components (oat, grain, fructose syrup, etc.).
  •  

Patents

  • Semjonovs Pavels, Ruklisa Maija, Paegle Longina, Saka Madara, Treimane Rita, Patetko Arturs, Linde Raimonds. Komagataeibacter rhaeticus P 1463 producer of bacterial cellulose." Application number EP15177983.2, 23.07.2015. EU
  • Semjonovs Pavels, Zikmanis Peteris, Sakirova Laisana, Treimane Rita, Patetko Arturs, Auzina Lilija. “Extracellular fructans producing acetic acid bacterial strain Gluconobacter nephelii P1464.” Application number EP15171167.8, 09.06.15. EU
  • Semjonovs Pavels, Upite Dagnija, Auzina Lilija, Patetko Arturs, Petranis Arnis, Denina Ilze, Upitis Andris. "Lactic acid bacteria Lactobacillus plantarum strain P 1462 and products containing the strain." Application number EP15169066.6, 25.05.2015. EU
  • Semjonovs Pavels, Danilevics Aleksejs, Auzina Lilija, Denina Ilze, Upitis Andris. „Association LMKK P1399 and method for obtaining fermented non-alcoholic beverages.” Application number EP13194546.1, 27.11.13.  EU
  • Semjonovs Pavels, Danilevics Aleksejs, Auzina Lilija, Denina Ilze, Upitis Andris. „Association LMKK P1398 and method for obtaining fermented non-alcoholic beverages.” Application number EP13194538.8, 27.11.13. EU
  • Semjonovs Pavels, Danilevics Aleksejs, Auzina Lilija, Denina Ilze, Upitis Andris. „Association LMKK P1401 and method fot obtaining fermented non-alcoholic polyfunctional synbiotic beverages.” Application number EP13194332.6, 25.11.13. EU
  • Pāvels Semjonovs, Aleksejs Daņiļevičs, Dagnija Upīte, Ilze Deniņa, Lilija Auziņa. “Paņēmiens fermentēto dzērienu sauso koncentrātu iegūšanai.” LV Patents, Nr. 14926, 20.11.2014.
  • Pāvels Semjonovs, Aleksejs Daņiļevičs, Ilze Deniņa, Andrejs Upītis, Lilija Auziņa. “Mikroorganismu kultūru asociācija LMKK 1400 un fermentācijas komplekti bezalkoholisko polifunkcionālu sinbiotisko dzērienu iegūšanai.” LV Patents, Nr. 14814, 22.11.2013.
  • Pāvels Semjonovs, Aleksejs Daņiļevičs, Ilze Deniņa, Andrejs Upītis, Lilija Auziņa. “Sausais ārstnieciski-profilaktiskais preparāts vai uztura bagātinātājs un paņēmiens to pagatavošanai.” LV Patents, Nr. 14805, 22.11.2013.
  • Pāvels Semjonovs, Aleksejs Daņiļevičs, Dagnija Upīte, Ilze Deniņa, Lilija Auziņa. “Fermentēto atspirdzinošo dzērienu šķidrais koncentrāts.” LV patents, Nr. 14706 B, 20.11.2013
  • Gunārs Bremers, Anita Blija, Arnolds Skele, Gints Birzietis, Aleksejs Danilevics. Method and device for removing water from bioethanol  by combined adsorbtion and distillation. Patent EP 2316549 B1  04.05.2011 Bulletin 2011/18
  • Semjonovs P, Zikmanis P. Pediococcus pentosaceus lactose-positive strain and a complex of fructan-containing exopolysaccharides synthesized by the strain. EP 2 011 859 A1; Eiropas Savienības patents, 05.07.2007.
  • Semjonovs P, Zikmanis P. Pienskābes bakteriju fruktānus saturošie eksopolisaharīdu kompleksi, to izmantošana raudzētajos produktos, pārtikas kvalitātes un funkcionālo īpašību uzlabošanai. P-07-105; LV, 21.09.2007.

 

Publications

2017

Semjonovs P., Sakirova L., Broks R., Kistkins S., Zikmanis P. (2017) Influence of Environmental Factors on Extracellular Fructan and Oligosaccharide Production by Gluconobacter nephelii. Res J Microbiol; 12(1):33-41 DOI: 10.3923/jm.2017.33.41

Semjonovs P., Ruklisha M., Paegle L., Saka M.,Treimane R., Skute M., Rozenberga L., Vikele L., Sabovics M., Cleenwerck I. (2017) Cellulose synthesis by Komagataeibacter rhaeticus strain P 1463 isolated from Kombucha. Appl Microbiol Biotechnol; 101(3):1003-1012 DOI: 10.1007/s00253-016-7761-8

Rozenberga L., Skute M., Belkova L., Sable I., Vikele L., Semjonovs P., Saka M., Ruklisha M., Paegle L. (2016) Characterization of films and nanopaper obtained from cellulose synthesized by acetic acid bacteria. Carbohyd Polym; 144:33-40 DOI: 10.1016/j.carbpol.2016.02.025

Stalidzans, E., Mozga, I., Sulins, J., Zikmanis, P., (2017). Search for a Minimal Set of Parameters by Assessing the Total Optimization Potential for a Dynamic Model of a Biochemical Network. IEEE/ACM Trans Comput Biol Bioinforma 14, 978–985.

Pentjuss, A., Stalidzans, E., Liepins, J., Kokina, A., Martynova, J., Zikmanis, P., Mozga, I., Scherbaka, R., Hartman, H., Poolman, M.G., Fell, D.A., Vigants, A., (2017). Model-based biotechnological potential analysis of Kluyveromyces marxianus central metabolism. J. Ind Microbiol Biotechnol Vol. 44, p. 1177–1190. 

2016

Grube M., Shvirksts K., Denina I., Ruklisa M., Semjonovs P. (2016) Fourier-transform infrared spectroscopic analyses of cellulose from different bacterial cultivations using microspectroscopy and a high-throughput screening device. Vib Spectrosc; 84:53-57 

Rozenberga L., Skute M., Belkova L., Sable I., Vikele L., Semjonovs P., Saka M., Ruklisha M., Paegle L. (2016) Characterization of films and nanopaper obtained from cellulose synthesized by acetic acid bacteria. Carbohyd Polym; 144:33-40 

Semjonovs P., Sakirova L., Broks R., Patetko A., Kistkins S., Zikmanis P. (2016)  Optimization of cultivation conditions for extracellular fructan and oligosaccharide production by Gluconobacter nephelii. Letters in Applied Microbiology, Vol.62(2) p. 145-152 

Semjonovs P., Patetko A., Grube M., Shvirksts K., Auzina L., Upite D., Linde R., Bormanis A., Upitis A., Ruklisa M., Kozlinskis E., Parele E.B., Gailitis J., Silina L., Denina I., Marauska M., Dlohi R. (2016) Application of Bifidobacterium lactis as the Single Strain Probiotic Starter Culture for Fermentation of Salmon (Salmo salar) Mince. Curr Nutr Food Sci, 12:28-34

2015

Semjonovs P., Shakirova L., Treimane R., Shvirksts K., Auzina L., Cleenwerck I., Zikmanis P. (2015) Production of extracellular fructans by Gluconobacter nephelii P1464. Lett Appl Microbiol; 62:145-152

Semjonovs P., Auzina L., Upite D., Grube M., Shvirksts K., Linde R., Denina I., Bormanis A., Upitis A., Ruklisha M., Parele E.B., Gailitis J., Silina L., Kozlinskis E., Marauska M., Danilevich A., Dlohi R. (2015) Application of Bifidobacterium animalis subsp. lactis as Starter Culture for Fermentation of Baltic Herring (Clupea harengus membras) Mince. Am J Food Technol; 10(5):184-194

2014

Kalnina I., Kirilova E., Gorbenko G., Kirilov G., Zvagule T., Linde R., Reste J. (2014) Long term alterations of blood plasma albumin of the blood plasma in Chernobyl clean-up workers. J Exp Integr Med; 4(3):165-170

Semjonovs P., Shakirova L., Denina I., Kozlinskis E. (2014) Development of a fructan-supplemented synbiotic cabbage juice beverage fermented by Bifidobacterium lactis Bb12. Res J Microbiol; 9(3):129-141

Semjonovs P., Denina I., Fomina A., Patetko A., Auzina L., Upite D., Upitis A., Danilevics A. (2014) Development of birch (Betula pendula Roth.) sap based probiotic fermented  beverage. Int Food Res J; 21(5): 1763-1767

Semjonovs P., Denina I., Linde R. (2014) Evaluation of physiological effects of acetic acid bacteria and yeast fermented non-alcohocolic beverage consumption in rat model. J Med Sci; 14(3):147-152

Vina I., Semjonovs P., Linde R., Denina I. (2014) Current evidence on physiological activity of kombucha fermented beverage and expected health effects. J Med Food; 17(2):179-188

2013

Semjonovs P., Denina I., Fomina A., Sakirova L., Auzina L., Patetko A., Upite D. (2013) Evaluation of Lactobacillus reuteri strains for pumpkin (Cucurbita pepo L.) juice fermentation. Biotechnol; 12(5):202-208

Denina I., Semjonovs P., Fomina A., Treimane R., Linde R. (2013) The influence of stevia glycosides on the growth of Lactobacillus reuteri strains. Lett Appl Microbiol; 58:278-284

Vīna I,. Semjonovs P., Linde R., Patetko A. (2013) Glucuronic acid containing fermented functional beverages produced by natural yeasts and bacteria associations. Int J Res Rev Appl Sci; 14(1):17-25

Vīna I., Linde R., Patetko A., Semjonovs P. (2013) Glucuronic acid from fermented beverages: biochemical functions in humans and its role health protection. Int J Res Rev Appl Sci; 14(2):217-230

2012

Grube M., Rutkis R., Gavare M., Lasa Z., Strazdina I., Galinina N., Kalnenieks U. (2012) Application of  FT-IR spectroscopy fingerprinting of Zymomonas mobilis respiratory mutants. Spectroscopy: An International Journal, 27(5-6):581-585

Parfejevs V., Gavare M., Cappiello L., Grube M., Muceniece R., Riekstina U. (2012) Evaluation of biochemical changes in dermal stem cells during in vitro neurodifferentiation by FT-IR analysis. Spectroscopy: An International Journal, 27(5-6):315-320

Polakovs M., Mironova-Ulmane N., Grube M. EPR and FT-IR spectroscopy studies of human blood after irradiation. (2012) Spectroscopy: An International Journal, 27(5-6):367-371

Semjonovs P. (2012) Bioloģiski aktīvās vielas pārtikas produktos: Pienskābes baktēriju producēto eksopolisaharīdu perspektīvas pārtikas produktu ražošanā (pp. 109-110); Pienskābes baktēriju eksopolisaharīdu izmantošana pārtikas produktu ražošanā (pp. 110-113). LLU Pārtikas tehnoloģijas fakultāte.

2011

Odlare M., Nehrenheim E., Ribe V., Thorin E., Gavare M., Grube M. (2011) Cultivation of algae with indigenous species - potentials for regional biofuel production, Applied Energy, 88(10), 3280–3285

Tihomirova K., Gavare M., Mežule L., Grube M., Juhna T. (2011) Application of FT-IR for characterization of biomass isolated from drinking water with high concentration of natural organic matter. Environmental Enginnering 2 & 3, pp. 672-678

2010

Bekers M., Grube M., Upite D., Kaminska E., Linde R., Pelce E., Danilevich A., Gavare M., Karklina D. (2010) The Resistance of some probiotics bacteria in the Stomach Model Environment. Proceedings of the Latvia University of Agriculture Nr. 24 (319), Jelgava, pp. 55-64

Denina I., Paegle L, Prouza M, Holátko J, Pátek M, Nešvera J, Ruklisha M. (2010) Factors enhancing L-valine production by growth limited L-isoleucine auxotrophic strain Corynebacterium glutamicum DilvA DpanB ilvNM13 (pECKAilvBNC) J Ind Microbiol Biotechnol. 37, pp. 689-99

Semjonovs P. (2010) Probiotikas un mikrobioloģija. LAGA Avīze (Latvian Association of Gynecologists and Obsetetricans), p.14

Shakirova L., Auzina L., Zikmanis P., Gavare M., Grube M. (2010) Influence of growth conditions on hydrophobi of Lactobacillus acidophilus and Bifidobacterium lactic cells and characteristics by FT-IR spectra. Spectroscopy. 24 (4), pp. 251-255

2009

Mironova-Ulmane N., Kuzmin A., Grube M. (2009) Raman and Infrared spectromicroscopy of manganese oxides, Journal of Alloys and Compounds, 480, 97-99

2008

Bekers M., Upite D., Kaminska E., Linde R., Scherbaka R., Danilevich A., Grube M. (2008) Fermentation of Jerusalem artichoke by Zymomonas mobilis and Saccharomyces cerevisiae. Nutrition & Food Science, vol. 38, No 2, pp. 128-134

Bekers M., Grube M., Upite D., Kaminska E., Danilevich A., Viesturs U., Karklina D. (2008). Inulin Syrup from dried Jerusalem Artichoke. LLU Raksti, 21 (315), Jelgava, pp. 116-121

Bekers M.,Grube M , Upite D., Kaminska E., Linde R., Danilevich A., Viesturs U. (2008) Production of ethanol by Saccharomyces cerevisiae using semi-products of sugar beet processing. In: Renewable Energy Resources, Production and Technologies, “Zinatne”  Publishers, pp.78-86

Bekers M.,Upite D., Kaminska E., Danilevich A., Linde R., Grube M., Viesturs U. (2008) Production of bioethanol and fructans from the semi-products of sugar beet processing Zymomonas mobilis. In: Renewable Energy Resources, Production and Technologies, “Zinatne” Publishers, pp.72-77

Grube M., Muter O., Strikauska S., Gavare M., Limane B. (2008) Application of FT-IR for control of the medium composition during the biodegradation of nitroaromatic compounds. Journal of Industrial Microbiology & Biotechnology. 35, pp.1545-1549

Grube M., Muter O., Gavare M., Limane B. (2008) Application of FT-IR for control of the medium composition during the biodegradation of nitroaromatic compounds. Journal of Industrial Microbiology and Biotechnology, 35, 1545-1549 

Semjonovs P., Zikmanis P. (2008) Evaluation of novel lactose-positive and exopolysaccharide-producing strain of Pediococcus pentosaceus for fermented foods. Eur.Food Res.Technol. 227 (3), pp. 851-856

Shakirova L., Auzina L., Grube M., Zikmanis P. (2008) Relationship between the cell surface hydrophobicity and survival of bacteria Zymomonas mobilis after exposures to ethanol,freezing and freeze-drying. J. Industrial Microbiol.Biotechnol. 35(10), pp. 1175-1180

Vina I., Linde R., Danilevich A., Bekers M., Sprudza, D. (2008) Interfacing natural products: inulin of Jerusalem artichoke – affirmative biological effects. Drugs of the Future, vol. 33, Suppl. A, p. 119-120

Vina I., Linde R., Remeza I., Karklina D. (2008) Antiviral activity of natural fructans: immunobiological effects. Drugs of the Future, vol. 33, Suppl. A

 

Conferences

Vikele L., Sable I., Rozenberga L., Treimane R., Treimanis A., Semjonovs P. (2015)  Properties of nanocellulose from wood pulp and bacterial cellulose obtained by different methods. American Chemical Society Division of Cellulose and Renewable Materials, 249th ACS National Meeting, Denver, CO, March 22-26, 2015, Cell 15, p. 8.

Semjonovs P., Denina I., Patetko A., Upite D., Linde R., Auzina L., Scherbaka R. (2014) Fish and seafood raw materials – promising source for development of value-added food products. 9th Baltic Conference on Food Science and Technology „Food for Consumer Well-Being” Foodbalt 2014, Jelgava, Latvia, May 8-9, 2014.

Patetko A., Semjonovs P., Denina I. (2014) Evaluation of yeast cultures for development of fermented apple-juice base non-alcoholic beverages. 9th Baltic Conference on Food Science and Technology „Food for Consumer Well-Being” Foodbalt 2014, Jelgava, Latvia, May 8-9, 2014.

Feldmane J., Ciprovica I., Semjonovs P., Linde R. (2014) The influence of fermentation temperature on the development of exopolysaccharides in yoghurt production. 9th Baltic Conference on Food Science and Technology „Food for Consumer Well-Being” Foodbalt 2014, Jelgava, Latvia, May 8-9, 2014.

Deniņa I., Semjonovs P., Fomina A., Treimane R. and Linde R. (2013) The influence of stevia glycosides on the growth of lactobacillus reuteri strains. Madride, Spānija, 2-4.10.2013.

Belkova L., Treimane R., Semjonovs P., Denina I., Treimanis A., Grinfelds U. Microstructure and properties of Bacterial cellulose. Baltic Polymer Symposium. Kauņa, Lietuva, 18-21.09.2013.

Feldmane J., Semjonovs P., Ciprovica I. (2013)  Potential of Exopolysaccharides in Yoghurt Production. ICOAFS 2013 : International Conference on Organic Agriculture and Food Security, Venice, Italy, August 15-16, 2013.

Patetko A., Semjonovs P., Fomina A., Deniņa I., Upīte D., Auziņa L., Treimane R. Lactic acid bacteria fermented pumpkin based probiotic beverage. ISM Annual Meeting, Telaviva, Izraēla, 18.-19.02.2013

Patetko A., Semjonovs P. Combined Bacterial Spore Formers and Lactic Acid Bacteria Containing Probiotic Supplements. St. Petersburg, 2012, 14 Slavonic-Baltic scientific forum, M114 (394).

Semjonovs P., Patetko A., Denina I., Auzina L., Upite D., Treimane R., Linde R., Fomina A., Paegle L., Ruklisa M., Vina I., Danilevichs A. (2012) Fructan-containing exopolysaccharydes-producing cultures of lactic acid bacteria for functional foods. 1st Congress of Baltic Microbiologists (CBM 2012) Rīga 31.10-04.11., P13

Semjonovs P., Denina I., Patetko A., Auzina L., Upite D., Treimane R., Fomina A., Paegle L., Ruklisa M., Danilevichs A. Novel prebiotic fructan-containing exopolysaccharyde-producing cultures of lactic acid bacteria for synbiotic foods. Int. Conf. „Nutrition and Health”, Book of Abstracts, Riga, Latvia, September 4-6, 2012, p. 68.

Semjonovs P., Denina I., Patetko A., Auzina L., Upite D., Treimane R., Danilevichs A., Linde R., Fomina A. Probiotics fermented Vegetable Juices. St. Petersburg, 2012, 14 Slavonic-Baltic scientific forum, M114 (396).

Polakovs M., Mironova-Ulmane N., Kurjane N., Reinholds E., Grube M. (2008) Micro-Raman scattering and infrared spectra of haemoglobin. In: Proceedings of the SPIE, pp.714214-714218

 

Cooperation

Latvia University of Agriculture, Faculty of Food Technology

Riga Technical University

Riga Stradins University

Latvian State Institute of Wood Chemistry

 

Contacts

Head of the laboratory

Dr. biol., M.oec. Leading Researcher Pāvels Semjonovs

pavels.semjonovs@lu.lv

Mob. phone: +371-29724408

Tel: +371-67034887

Fax: +371-67034885