Hanna Koivula

ORCID: 0000-0002-9717-0465
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About
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Research Areas
  • Material Properties and Processing
  • Advanced Cellulose Research Studies
  • Nanocomposite Films for Food Packaging
  • Research in Social Sciences
  • Cultural Heritage Materials Analysis
  • Color Science and Applications
  • Lignin and Wood Chemistry
  • Tree Root and Stability Studies
  • Industrial Vision Systems and Defect Detection
  • Surface Modification and Superhydrophobicity
  • Surface Roughness and Optical Measurements
  • Plant Reproductive Biology
  • Digital Innovation in Industries
  • Plant Molecular Biology Research
  • Food Waste Reduction and Sustainability
  • Food Supply Chain Traceability
  • Biofuel production and bioconversion
  • biodegradable polymer synthesis and properties
  • Collagen: Extraction and Characterization
  • Electrospun Nanofibers in Biomedical Applications
  • Consumer Packaging Perceptions and Trends
  • Sustainable Supply Chain Management
  • Microplastics and Plastic Pollution
  • European Monetary and Fiscal Policies
  • Intellectual Property Law

University of Helsinki
2015-2024

Helsinki Art Museum
2016

McMaster University
2013

Åbo Akademi University
2006-2011

University of Maine
2010

Current environmental concerns have encouraged the food packaging industry to search for biobased barriers produced from renewable material sources. One candidate barrier applications is nanocellulose which has been found possess excellent properties, especially against grease and oxygen. However, most of research presented so far based on small, batch-produced films or coatings nanocellulose. Reports continuous processing into coatings, required large-scale, low-cost production, are few....

10.1021/acs.iecr.6b00417 article EN Industrial & Engineering Chemistry Research 2016-03-07

Natural biopolymers have become key players in the preparation of biodegradable food packaging. However, are typically highly hydrophilic, which imposes limitations terms barrier properties that associated with water interactions. Here, we enhance biobased packaging using multilayer designs, each layer displays a complementary function. Oxygen, vapor, and UV barriers were achieved stepwise assembly cellulose nanofibers, wax, lignin particles supported by chitin nanofibers. We first...

10.1021/acsami.2c07579 article EN cc-by ACS Applied Materials & Interfaces 2022-06-21

Market implementation of active and intelligent packaging (AIP) technologies specifically for fiber-based food can be hindered by various factors. This paper highlights those from a social, economic, environmental, legislative point view, elaborates upon the following aspects mainly related to interactions among value chain stakeholders: (i) market drivers that affect developments, (ii) gap between science industry, (iii) legislation practice, (iv) cooperation producing stakeholders within...

10.3390/foods10020465 article EN cc-by Foods 2021-02-20

Faba bean has gained increasing attention from the food industry and consumers mainly due to quality of its protein fraction. Fermentation been recently recognized as most efficient tool for improving nutritional organoleptic properties. In this study, faba flour fermented with Lactobacillus plantarum DPPMAB24W was used fortify semolina pasta. Pasta samples including different percentages were produced at pilot-plant level characterized using an integrated approach chemical, nutritional,...

10.1039/c6fo01808d article EN Food & Function 2017-01-01

ABSTRACT The aim of this study was to evaluate a thin, TEMPO‐oxidized (2,2,6,6‐tetramethylpiperidine‐1‐oxyl–mediated oxidation) cellulose nanofibril (CNF) coating as barrier layer in multilayer packaging films together with biobased polyethylenes. purpose also explore the possible interactions between food products and films, feasibility these for dry foods. CNF provided an oxygen suitable both demanding modified atmosphere (MAP). MAP pouches made retained their shape protected ground...

10.1002/app.44830 article EN Journal of Applied Polymer Science 2017-01-23

Although fish gelatin has become a research hotspot in recent years, researchers and manufacturers are still looking for high-quality sources of galatin to meet the commercial demand safer gelatin.became This study aimed evaluate impact seasonal variation farming systems on properties extracted from Nile tilapia scales. Gelatin farmed had lowest impurities, higher clarity as well desirable color characteristics (L* = 65.95 a* −0.33). The protein fat composition Wild (91.00 ± 0.00c) 1.94...

10.1016/j.heliyon.2024.e24504 article EN cc-by-nc-nd Heliyon 2024-01-01

Mycotoxins, especially aflatoxin B1 (AFB1) and fumonisin (FMB1), are common contaminants in cereal-based foods. Instances of contamination predicted to increase due the current challenges induced by climate change. Despite health benefits whole grains, presence mycotoxins bran remains a concern. Nonetheless, previous research indicates that wheat can adsorb mutagens. Therefore, this study investigated capacity maize, wheat, oat brans AFB1 FMB1 under varying

10.3390/toxins16070288 article EN cc-by Toxins 2024-06-25

Specular gloss is widely used in the paper industry to assess surface quality. Although specular defined as ratio of light fluxes from inspected and a reference surface, measurement minute changes local has not been presented international standards due lack suitable meters. Our studies average papers prints using highly sensitive diffractive meter (DOG) yielded information on global that can help papermakers research development optimal quality, which crucial obtaining print

10.32964/tj7.4.27 article EN TAPPI Journal 2008-05-01

A "waste-valorization" approach was developed to transform recalcitrant hydrolysis lignin (HL) from second-generation bioethanol production into multifunctional bio-based products. The extracted with aqueous acetone, yielding two fractions enriched in and cellulose, respectively. soluble (SHL) converted anionic cationic colloidal particles (CLPs c-CLPs). insoluble cellulose-rich fraction transformed lignocellulosic nanofibrils that were further combined CLPs or c-CLPs obtain nanocomposite...

10.1016/j.susmat.2021.e00269 article EN cc-by Sustainable materials and technologies 2021-03-11

Atomic layer deposition (ALD) is a viable method for depositing functional, passivating, and encapsulating layers on top of halide perovskites. Studies in that area have only focused metal oxides, despite great number materials can be made with ALD. This work demonstrates that, addition to other ALD processes compatible the We describe two new lead sulfide. These operate at low temperatures (45–155 °C) been inaccessible previous PbS processes. Our rely volatile reactive precursors Pb(dbda)...

10.1021/acs.chemmater.0c01887 article EN cc-by Chemistry of Materials 2020-09-16

Developing the bio-based barrier material to substitute petroleum-based one is trend in functional packaging applications. Utilization of abundantly underappreciated bark biomass attractive from sustainability point view; however, an upgraded approach required maximize performances lignin-containing cellulose nanofibril (LCNF) films willow bark. Herein, hot water extraction (HWE) and microfluidization were studied for their effect on yield LCNF its film performance after treatment aqueous...

10.1021/acsanm.1c00071 article EN cc-by ACS Applied Nano Materials 2021-02-26

The transport processes of methane (CH4 ) in tree stems remain largely unknown, although they are critical assessing the whole-forest CH4 dynamics. We used a physically based dynamic model to study spatial and diurnal dynamics stem fluxes. parameterised using data from laboratory experiments with Pinus sylvestris Betula pendula compared experimental field study. Stem flux conditions were explained by axial advective soil xylem sap flow radial diffusion through conditions. Diffusion...

10.1111/pce.14718 article EN cc-by Plant Cell & Environment 2023-09-15

The objective of this study was to assess consumer behaviour towards tilapia and products provide information linking production with consumption patterns preferences as well predict factors that influence preference, purchase behaviour, willingness patronize fillets using classification regression trees. A total 960 responses were obtained convenient sampling. findings survey indicate is eaten mainly because its taste. Regarding the various cooked options available in Ghana, 58.5% preferred...

10.1016/j.heliyon.2024.e30247 article EN cc-by-nc-nd Heliyon 2024-04-25

10.1016/j.colsurfa.2007.11.043 article EN Colloids and Surfaces A Physicochemical and Engineering Aspects 2007-12-04

Abstract Aquaculture is a key component of Ghana's food system strategies, promoting sustainable animal protein production. complements traditional marine capture fisheries to close the gap between demand and supply. However, about one third fish produced globally have been reported go waste yearly. Among various cultured fish, Nile tilapia Oreochromis niloticus predominant species. This study aimed estimate extent wastage by consumers in Ghana. A web‐based cross‐sectional consumer survey...

10.1002/aff2.188 article EN cc-by Aquaculture Fish and Fisheries 2024-06-01

Suberin fatty acids were extracted from outer bark of Silver birch (Betula pendula Roth.) using an isopropanolic sodium hydroxide solution. Laboratory sheets composed lignocellulosic fiber networks prepared unbleached and unrefined softwood kraft pulp further impregnated with suberin acid monomers cured maleic anhydride in ethanol The treatment resulted hydrophobic surfaces, which the contact angles remained over 120 degrees during entire measurement. network also retained its water vapor...

10.3390/molecules24234391 article EN cc-by Molecules 2019-12-01

Abstract Protein films can be applied to improve food quality and reduce packaging waste. To overcome their poor water barrier properties, lipids are often incorporated. The function of incorporated lipid depends on the interface between filler matrix. This study aimed tailor properties a protein–lipid film by designing oil/water see if concept inactive/active is valid. Therefore, we varied emulsifier stabilizing solid nanoparticles (SLN) promote (via β‐lactoglobulin) or minimize Tween 20)...

10.1111/1750-3841.14950 article EN Journal of Food Science 2019-11-27

Abstract Without food packaging, the global supply chain could not function. Packaged products are protected in transportation and retail, reducing waste. Packaging is also a visible feature of environmental debates, as concerns over solid waste have become part public discussion. Responding to both challenges requires packaging sector develop adopt sustainable innovations. This study seeks understand role sustainability innovation through expert interviews. The results this aid clarifying...

10.1007/s43615-022-00217-2 article EN cc-by Circular Economy and Sustainability 2022-10-18
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