Dr. Usha Thiyam-Holländer

Position: Associate Professor

Office:
Human Nutritional Sciences
Room 204, Richardson Centre for Functional Foods and Nutraceuticals
196 Innovation Drive
Winnipeg, MB R3T 6C5  Canada

Phone No.: (204) 474-9976

Fax No.: (204) 474-7592

E-mail: usha.thiyam@umanitoba.ca

Dr. Thiyam-Holländer's research is centered around the extraction, quantification and isolation of minor components such as phenolic compounds from by-products of edible oil processing, mainly canola. She is also researching the impact of various novel aspects of processing on canola oil and minor components. Her focus is also on plant-based functional foods and nutraceutical ingredients and the impact of innovative technology, isolation and optimization.


Education:

2005 Ph.D. University of Kiel, Germany
2000 M.Sc. IIT-Kharagpur, India

Areas of Specialization:

  • Minor components of edible oil processing
  • Lipid oxidation
  • Functional foods and nutraceuticals
  • Process technology and optimization of plant proteins
  • Product development using plant proteins Research Interests:
  • Minor components: Isolation, characterization from by-products of edible oil processing.
  • Lipid oxidation: Value addition of canola oil. Impact of processing on canola oil and minor components.
  • Functional foods and nutraceuticals: Isolation, optimization and application of proteins derived from oilseeds eg. canola, rapeseed and flax.
    Click here for information on a new, innovative project

Research Interests:

  • Impact of minor components and food quality: isolation, characterization. By-products processing.
  • Lipid oxidation and antioxidants: impact of processing on canola, hemp and mustard oils.
  • Functional foods and Nutraceuticals: isolation, optimization and bioactivity.

The long-term objective of my research program is to elucidate new knowledge surrounding plant-based antioxidants and give mechanistic insight into the structure-function relationship to support antioxidant function. This is a long-term commitment to food quality, nutrition and health through research on the benefits of natural antioxidants. This will also contribute to the commercial focus of functional foods, nutraceuticals and the food bioactives market. My program aims to prove the notable function of sinapic acid derivatives (referred to as sinapates) as antioxidants in lipids, emulsions and bridge the existing gap in knowledge for food applications and health benefits. My approach involve assessment of analytical methods for value-addition and determining quality, processing design, and applications to regulatory guidelines. I value technological and innovative “green” processing approaches.

My laboratory has contributed significantly to answer questions related to the chemistry of production, bio-processing and mechanistic insights for antioxidant function, and other food quality attributes. The regulatory framework of oilseeds is based on quality centred on phytochemicals and minor components. The most active antioxidants find usage in the management of many oxidative stress-related diseases. Several theories are put forward by researchers, one being that the addition of an alkyl ester side chain has a positive effect on the partition coefficient of sinapic acid, improving its utility as an antioxidant in a more lipophilic medium. Modifications of the aromatic ring in the number and position of hydroxyl groups, the carboxylic group through esterification to different moieties, and decarboxylation to smaller molecules, generates interest to empower antioxidant efficacy. The interdisciplinary subject has its roots in food science, food chemistry, agriculture, plant science, analytical chemistry and application in animals and humans; all of which are essentially applied disciplines.

Funding Agency:

  • NSERC
  • Canola Council of Canada
  • Syngenta Crop Protection (Canada) Inc.
  • University of Manitoba.
  • ARDI

Current openings with Dr. Thiyam-Holländer's Team

Current openings 
1. Student Research Assistant [with option of Senior Thesis, applicant must be full-time student in Human Nutritional Sciences] (1)

Open positions - MSc. & post-doctoral/visiting scientists
Positions open for highly motivated MSc/PhD students and post-doctoral fellow in the area of analytical and lipid chemistry are encouraged. Students who qualify for UMGF, MGS and MHRC fellowships are encouraged to submit their intent. Qualified

Post-docs and visiting scientist who qualify for MHRC and other Canadian fellowships are welcome to submit their intent.

Dr. Usha Thiyam-Holländer
Richardson Center for Functional Foods & Nutraceuticals,
196 Innovation Drive, Winnipeg, MB, R3T6C5, Canada.
Email: usha.thiyam@ad.umanitoba.ca

Recent Publications

Publications (1 under review; 2-7 online first):

  1. Matthäus, M., Pudel, F., Chen, Y, Achary, A. A. & Thiyam-Hollander, U. (2014). “Impact of Canolol Enriched Extract from Heat-Treated Canola Meal to Enhance Oil Quality Parameters in Deep-Frying: A Comparison with Rosemary Extract and TBHQ-Fortified Oil Systems”. Journal of American Oil Chemists’ Society. (revision submitted) [Funding source: Collaboration through NSERC Engage 2, 2010 Canola Workshop].
  2. Chen, Y., Thiyam-Hollander, U. Barthet, V. & Aachary, A.A. (2014). “Value Added Potential of Expeller-Pressed Canola Oil Refining: Evaluation of Loss, Recovery and Characterization of Sinapic Acid Derivatives and Tocopherols from By-Products”. Journal of Agricultural & Food Chemistry DOI: 10.1021/jf502428z [Funding source: NSERC Engage 2].
  3. Yuan, L., Scanlon, M.G, Eskin, N.A.M., Thiyam-Hollander, U., & Aachary, A.A. (2014). “Value Addition to Canola Meal and Mustard Bran: Effects of Pretreatments and Enzyme Hydrolysis on the Production of Oligosaccharides and Release of Phenolics”. Applied Biochemistry and Biotechnology. DOI 10.1007/s12010-014-1253-z. [Funding source: ARDI].
  4. Thiyam-Hollander, U., Aladedunye, F., Logan, A., Yang, H & Diehl, B.W.K. (2014). “Identification and Quantification of Canolol, Sinapine and Sinapic Acid from Indian Mustard Oils and Canadian Mustard Products”. European Journal of Lipid Science & Technology (DOI 10.1002/ejlt.201400222). [Funding source: NSERC CRD, Mustard biorefining, Start up and collaboration].
  5. Aladedunye, F., Niehaus, K., Thiyam-Hollander, U., Fehling, E & Matthäus B. (2014). “Enzymatic Lipophilization of Phenolic Extracts from Rowanberry (Sorbus Aucuperia) & Evaluation of Antioxidant Activity in Edible Oil”. LWT-Food Science and Technolog. DOI 10.1016/j.lwt.2014.08.008.
  6. Mayengbam, S., Aachary, A.A., & Thiyam-Hollander, U. (2014). “Composition of Endogenous Phenolics in Hulls and Cotyledons of Mustard and Canola Based on HPLC-DAD and UPLC-MS Analysis”. Antioxidants (Molecules). DOI 10.3390/antiox3030544 Invited paper [Funding source: NSERC CRD].
  7.  Achary, A., Chen, Y., Eskin, N.A. M. & Thiyam-Hollander, U. (2014). “Crude Canolol and Canola Oil Deodistillate Extracts Improve the Stability of Refined Canola Oil during Deep-fat Frying”. European Journal of Lipid Science & Technology. DOI: 10.1002/ejlt.201300498 [Funding source: NSERC Engage 1].
  8. Khattab, R., Eskin, M. & Thiyam-Hollander, U. (2014). “Production of Canolol from Canola Meal Phenolics via Hydrolysis and Microwave-Induced Decarboxylation”. Journal of the American Oil Chemists’ Society, 91, 89-97. [Funding source: NSERC CRD].

Click here for older publications.

Ph.D. Position Available in Antioxidant and Plant Polyphenols