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Personlig profil

Information om forskning och undervisning

Description of research

Polysaccharides are considered to be inexhaustible and renewable resources for modern industrial application as being bioactive, biocompatible and biodegradable.  Due to ever-increasing prices of petroleum-based polymers, more interest has been directed to polysaccharide-based materials. Hemicelluloses: polysaccharides, from the agriculture and forest industry and its potential utilization as a green and environment friendly material has not been yet fully explored. 

Aerogels are diverse class of porous, solid materials with low weight and density, high surface area, and high mechanical properties. Aerogel is formed by the removal of liquid from a gel, e.g., evaporation of water from a hydrogel. The liquid phase is replaced with air using techniques that maintain the gel structure, enabling the formation of porous materials.

 

To prepare a Polysaccharide aerogel, first polysaccharides are dissolved into water to make a hydrogel and then water is removed using freeze drying; a process called sublimation, which maintains the structure of gel. The proposed research focuses on the development of novel functional materials from upgraded biopolymers: polysaccharide aerogels. The potential of polysaccharide aerogels is great due to their high water absorption capacity, safety, renewability, sustainability, and low cost. Thus new polysaccharide-based aerogels could find applications as water absorbents, providing mechanical support, biocompatible delivery systems, and encapsulation of active components, such as antioxidants.

Meritförteckning

Current position:

Doctoral Researcher, Department of Food and Environmental Sciences, University of Helsinki (2013→)

Degrees awarded:

Master of Erasmus Mundus Food of Life (Major: Food Technology) University of Helsinki, Finland and University of Copenhagen, Denmark (2010-2012)

MSc (Hons.) Food Technology, National Institute of Food Science and Technolgoy, University of Agriculture Faisalabad, Pakistan (2008-2010)

BSc (Hons.) Agri, Major: Food Science & Technology, National Institute of Food Science and Technolgoy, University of Agriculture Faisalabad, Pakistan (2004-2008)

Vetenskapsgrenar

  • 416 Livsmedelsvetenskap

Internationellt och inhemskt samarbete Publikationer och projekt inom de senaste fem åren.

Publikationer 2012 2018

NOVEL FUNCTIONAL MATERIALS FROM UPGRADED BIOPOLYMERS: POLYSACCHARIDE AEROGELS

Ghafar, A., 2018, Helsinki: Helsingin yliopisto.

Forskningsoutput: AvhandlingDoktorsavhandlingSamling av artiklar

Öppen tillgång

Mesoporous guar galactomannan based biocomposite aerogels through enzymatic crosslinking

Ghafar, A., Gurikov, P., Subrahmanyam, R., Parikka, K. M., Tenkanen, T. M., Smirnova, I. & Mikkonen, K. S., 2017, I : Composites Part A: Applied Science and Manufacturing. 94, s. 93-103

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Synchrotron microtomography reveals the fine three-dimensional porosity of composite polysaccharide aerogels

Ghafar, A., Parikka, K., Haberthür, D., Tenkanen, M., Mikkonen, K. S. & Suuronen, J-P., 2017, I : Materials. 10, 8, s. 871 20 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Öppen tillgång
Fil

Enzyme-mediated gelation of polysaccharides yields bio-based aerogels

Ghafar, A., Parikka, K. M., Sontag-Strohm, T. S., Österberg, M., Tenkanen, T. M. & Mikkonen, K. S., 2015, (!!In preparation) Gums and Stabilisers for the Food Industry : Hydrocolloid functionality for affordable and sustainable global food solutions. Phillips, G. O. & Williams, P. A. (red.). Cambridge: The Royal Society of Chemistry, (Specialists publications; nr. 353).

Forskningsoutput: Kapitel i bok/rapport/konferenshandlingKonferensbidragVetenskaplig

Projekter 2014 2018

Priser

Best Poster Award during International Seminar on Aerogels

Abdul Ghafar (!!Recipient), okt 2014

Pris: Pris och hedersbetygelser

Aktiviteter 2013 2016

  • 11 Arrangemang av och deltagande i konferens/workshop/kurs/seminarium
  • 2 Annan
  • 2 Akademisk besök på annan institution
  • 1 Typer av övriga aktiviteter - Extern undervisning och koordinering av ämne

Teaching assistant (lab course ET455)

Abdul Ghafar (Deltagare)
sep 2016okt 2016

Aktivitet: Andra aktivitetstyperAnnan

Teaching assistant for ET825 Food Structure Laboratory Works

Abdul Ghafar (Deltagare)
dec 2016

Aktivitet: Andra aktivitetstyperAnnan

Teaching assistant

Abdul Ghafar (Deltagare)
1 mar 201631 maj 2016

Aktivitet: Andra aktivitetstyperTyper av övriga aktiviteter - Extern undervisning och koordinering av ämne

International Seminar on Aerogels: synthesis, properties, applications

Abdul Ghafar (Talare: Presentation)
22 sep 201623 sep 2016

Aktivitet: Typer för deltagande i eller organisering av evenemangArrangemang av och deltagande i konferens/workshop/kurs/seminarium

PolyRefNorth-Seminar

Abdul Ghafar (Poster presentation)
26 nov 201527 nov 2015

Aktivitet: Typer för deltagande i eller organisering av evenemangArrangemang av och deltagande i konferens/workshop/kurs/seminarium