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  1. AU="Koljonen, Krista"
  2. AU="Braus, Gerhard"
  3. AU=Singer F R
  4. AU="Miller, Geoff"
  5. AU="Aabed, Kawther"
  6. AU="Dr Lucy Telfar Barnard"
  7. AU="Sorial, D"
  8. AU="Pilat, Elzbieta"
  9. AU=del Carmen Marcela G
  10. AU="Bennys, Karim"
  11. AU="Víctor Villaroel Saavedra"
  12. AU="Barois, Isabelle"
  13. AU="Beasley, David M"
  14. AU="Matsuzawa, Yohsuke"
  15. AU="William J Sutherland"
  16. AU="Storey, Claire M"
  17. AU="Schwartzenburg, Joshua"
  18. AU=Charoenlap Suvanee
  19. AU="Gomez Cifuentes, Juan D" AU="Gomez Cifuentes, Juan D"
  20. AU="Marozas, J A"
  21. AU="Casimiro De Luca"
  22. AU="Julie Clarke"
  23. AU=Wybraniec Maciej T.
  24. AU="Meuwese, Christiaan L"
  25. AU="Al-Hattab, Eyad S"
  26. AU="Eduardo Díaz Cano"
  27. AU=Nrxe Dorte Schou AU=Nrxe Dorte Schou
  28. AU="Kende, Anna"
  29. AU="Nattmann, Phillip"
  30. AU="Assefa, Samuel"
  31. AU="McMahon, Teagan"
  32. AU="Radojičić Zoran"
  33. AU="Muwu Xu"
  34. AU="Sacchi, Diana"
  35. AU="Romain Berraud-Pache"
  36. AU=Johnson Paul D R
  37. AU="Sarigül-Yildirim, Figen"
  38. AU=Chang Yu-Ting
  39. AU="Xu, Ivana"
  40. AU="Linde, Lauren"
  41. AU="Brewer, Katlyn K"
  42. AU="Prow, Natalie A"
  43. AU=Venkatesan Arun
  44. AU="Russcher, H."
  45. AU="Chambino, Beatriz"
  46. AU="L'Abbé, Ericka N."
  47. AU=Moore Stephen M.
  48. AU="Gabriel, Berteșteanu Șerban Vifor" AU="Gabriel, Berteșteanu Șerban Vifor"
  49. AU="Gallo, Eduado"
  50. AU="Yurchenko, Maria"
  51. AU="Fabiana Giber"
  52. AU="Rajakumar, Gopal Suseela" AU="Rajakumar, Gopal Suseela"
  53. AU="Gutierrez, M. N"
  54. AU=Zhuo Jia L.
  55. AU=Miller Mark A
  56. AU="Dąbrowski, Leszek"
  57. AU="Röltgen, Katharina"
  58. AU="Tumanov, Alexey"
  59. AU="Berns, Lauren"
  60. AU="Elena A. Deshevaya"
  61. AU=Zhang Ruijuan
  62. AU="Mueller, Luke"
  63. AU=Barzon Luisa
  64. AU="Karunakaran, Denuja"
  65. AU="Figueroa-Rivera, Ivonne M"
  66. AU="Blackburn, Fran"
  67. AU="Lee, Hee-Kyung"
  68. AU=Kinoshita J H
  69. AU="Hernesniemi, Juha"
  70. AU="Evans, Matthew L"
  71. AU=Payne Thomas
  72. AU="Brown, Dexter"

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  1. Artikel: Study on spinnability of arabinoxylan extracted from barley husks

    Butylina, Svetlana / Koljonen, Krista / Hiltunen, Salla / Laatikainen, Katri

    Cellulose. 2022 Oct., v. 29, no. 15

    2022  

    Abstract: Valorisation of bio-based materials derived from agricultural and industrial side-streams or waste-streams is a basis of circular economy. However, the success of it depends on the full understanding of materials and finding their optimal way of ... ...

    Abstract Valorisation of bio-based materials derived from agricultural and industrial side-streams or waste-streams is a basis of circular economy. However, the success of it depends on the full understanding of materials and finding their optimal way of processing. Barley husk is a side-stream waste material derived from the starch and ethanol production. This study is focused on the processability of the arabinoxylan extracted from barley husk using the electrospinning technique to produce thin xylan-poly(vinyl alcohol) fibres. As a comparison, lignin-free xylan of beech wood was used. The properties of spinning solutions and resulting nanofibrous mats were assessed by using rheological measurements, FTIR spectroscopy, scanning electron microscopy and contact angle measurements. It was found that solubility plays a crucial role in the spinnability of xylan extracts. Decrease in viscosity of arabinoxylan achieved by decreasing its concentration was found to improve the jet stability but at the same time, to reduce the diameter of spun fibre. Hydrophilicity of nanofibrous mats were strongly affected by the type of xylan and solvent used. The xylan-based nanofibres have specific properties that could be used for developing value-added applications, such as material for scaffolds for tissue engineering, drug delivery, medical implants, biosensors, wound dressing, water filtration and packaging or further process into carbon nanofibres.
    Schlagwörter Fagus ; Fourier transform infrared spectroscopy ; arabinoxylan ; barley ; biosensors ; carbon nanofibers ; cellulose ; circular economy ; contact angle ; drugs ; electron microscopy ; ethanol production ; filtration ; hulls ; hydrophilicity ; solubility ; solvents ; starch ; value added ; viscosity ; wood ; xylan
    Sprache Englisch
    Erscheinungsverlauf 2022-10
    Umfang p. 8409-8425.
    Erscheinungsort Springer Netherlands
    Dokumenttyp Artikel
    ZDB-ID 1496831-9
    ISSN 1572-882X ; 0969-0239
    ISSN (online) 1572-882X
    ISSN 0969-0239
    DOI 10.1007/s10570-022-04761-w
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  2. Artikel ; Online: Holistically sustainable continence care: A working definition, the case of single-used absorbent hygiene products (AHPs) and the need for ecosystems thinking.

    Vaittinen, Tiina / Koljonen, Krista / Tella, Susanna / Asikainen, Eveliina / Laatikainen, Katri

    Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine

    2023  , Seite(n) 9544119231188860

    Abstract: Incontinence is a common health issue that affects hundreds of millions of people across the world. The solution is often to manage the condition with different kinds of single-use continence technologies, such as incontinence pads and other absorbent ... ...

    Abstract Incontinence is a common health issue that affects hundreds of millions of people across the world. The solution is often to manage the condition with different kinds of single-use continence technologies, such as incontinence pads and other absorbent hygiene products (AHPs). Throughout their life cycle, these fossil-based products form a remarkable yet inadequately addressed ecological burden in society, contributing to global warming and other environmental degradation. The products are a necessity for their users' wellbeing. When looking for sustainability transitions in this field, focus on individual consumer-choice is thus inadequate - and unfair to the users. The industry is already seeking to decrease its carbon footprint. Yet, to tackle the environmental impact of single-use continence products, also societies and health systems at large must start taking continence seriously. Arguing that continence-aware societies are more sustainable societies, we devise in this article a society-wide working definition for holistically sustainable continence care. Involving dimensions of social, ecological and economic sustainability, the concept draws attention to the wide range of technologies, infrastructures and care practices that emerge around populations' continence needs. Holistically sustainable continence care is thus not only about AHPs. However, in this article, we examine holistically sustainable continence care through the case of AHPs. We review what is known about the environmental impact AHPs, discuss the impact of care practices on aggregate material usage, the future of biobased and degradable incontinence pads, as well as questions of waste management and circular economy. The case of AHPs shows how holistically sustainable continence care is a wider question than technological product development. In the end of the article, we envision an ecosystem where technologies, infrastructures and practices of holistically sustainable continence care can flourish, beyond the focus on singular technologies.
    Sprache Englisch
    Erscheinungsdatum 2023-09-01
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1065942-0
    ISSN 2041-3033 ; 0046-2039 ; 0954-4119
    ISSN (online) 2041-3033
    ISSN 0046-2039 ; 0954-4119
    DOI 10.1177/09544119231188860
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel: Hydrothermally induced changes in the properties of MFC and characterization of the low molar mass degradation products

    Hiltunen, Salla / Koljonen, Krista / Niemelä, Klaus / Heiskanen, Isto / Johansson, Leena-Sisko / Backfolk, Kaj

    Cellulose. 2019 Nov., v. 26, no. 16

    2019  

    Abstract: The aim of this study was to determine hydrothermally induced changes in the physico-chemical properties of a fine microfibrillated cellulose (MFC). The MFC was prepared from a monocomponent endoglucanase-treated never-dried birch kraft pulp which had ... ...

    Abstract The aim of this study was to determine hydrothermally induced changes in the physico-chemical properties of a fine microfibrillated cellulose (MFC). The MFC was prepared from a monocomponent endoglucanase-treated never-dried birch kraft pulp which had been run several times through a microfluidizer in order to obtain a sample substantially free from fibers or fiber fragments. The fine MFC was subjected to hydrothermal treatment at [Formula: see text] for 0.5, 2.5, 4.5, 8.5 and 20.5 h, after which the viscosity, water-retention capacity, surface charge, discoloration and formation of hydrolysis products were determined. The viscosity, surface charge and water-retention capacity of MFC decreased as a result of the treatment but in oscillatory measurements the storage and loss moduli increased. Hydrothermal treatment also caused discoloration of the sample which could not be fully washed away with water. Surface analysis with XPS revealed no significant changes in the surface structure of the dried MFC cakes but the filtrates after the hydrothermal treatment were complex mixtures of sugars, organic acids and furans. The main degradation products detected were xylose and xylobiose, but isomerization products of sugars (xylulose, fructose) were also found in the filtrates. In addition numerous organic acids, including formic, glycolic, lactic and xylonic acid, were identified in the filtrates, showing that both acid and alkaline catalyzed reactions occur due to dissociation of water into [Formula: see text] and [Formula: see text].
    Schlagwörter Betula ; X-ray photoelectron spectroscopy ; catalytic activity ; cellulose ; cellulose microfibrils ; discoloration ; dissociation ; filtrates ; fructose ; furans ; hot water treatment ; hydrolysis ; isomerization ; kraft pulp ; loss modulus ; molecular weight ; organic acids and salts ; water holding capacity ; xylose ; xylulose
    Sprache Englisch
    Erscheinungsverlauf 2019-11
    Umfang p. 8589-8605.
    Erscheinungsort Springer Netherlands
    Dokumenttyp Artikel
    ZDB-ID 1496831-9
    ISSN 1572-882X ; 0969-0239
    ISSN (online) 1572-882X
    ISSN 0969-0239
    DOI 10.1007/s10570-019-02603-w
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  4. Artikel: Correction to: Hydrothermally induced changes in the properties of MFC and characterization of the low molar mass degradation products

    Hiltunen, Salla / Koljonen, Krista / Niemelä, Klaus / Heiskanen, Isto / Johansson, Leena-Sisko / Backfolk, Kaj

    Cellulose. 2019 Nov., v. 26, no. 16

    2019  

    Abstract: In the original publication, the less than symbol ( ... ) in Tables 2 and 4. ...

    Abstract In the original publication, the less than symbol (<) was mistakenly processed as greater than symbol (>) in Tables 2 and 4.
    Schlagwörter cellulose ; hot water treatment ; molecular weight
    Sprache Englisch
    Erscheinungsverlauf 2019-11
    Umfang p. 8607-8609.
    Erscheinungsort Springer Netherlands
    Dokumenttyp Artikel
    Anmerkung Published Erratum
    ZDB-ID 1496831-9
    ISSN 1572-882X ; 0969-0239
    ISSN (online) 1572-882X
    ISSN 0969-0239
    DOI 10.1007/s10570-019-02682-9
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  5. Artikel ; Online: Healthcare Workers' Experiences and Views of Using Surgical Masks and Respirators, and Their Attitudes on the Sustainability: A Semi-Structured Survey Study during COVID-19.

    Venesoja, Anu / Grönman, Kaisa / Tella, Susanna / Hiltunen, Salla / Koljonen, Krista / Butylina, Svetlana / Rotinen, Laura / Torkki, Paulus / Laatikainen, Katri

    Nursing reports (Pavia, Italy)

    2021  Band 11, Heft 3, Seite(n) 615–628

    Abstract: A universal mask use was instituted in healthcare during COVID-19 pandemic in 2020. The extensive growth in the consumption of surgical masks and respirators brought new challenges. Healthcare workers had to get accustomed to wearing the facemasks ... ...

    Abstract A universal mask use was instituted in healthcare during COVID-19 pandemic in 2020. The extensive growth in the consumption of surgical masks and respirators brought new challenges. Healthcare workers had to get accustomed to wearing the facemasks continuously, raising concerns on the patient, occupational, and environmental safety. The aim of this study is to describe frontline healthcare workers and other authorities' views and experiences on continuous use of surgical masks and respirators (facemasks) and their attitudes towards environmental and sustainability issues. A cross-sectional web-based survey was conducted in Finland during the COVID-19 pandemic in autumn 2020. The respondents(N = 120) were recruited via social media, and the data were collected using a purpose-designed questionnaire. Descriptive statistics and inductive content analysis were used to analyze the quantitative data and qualitative data, respectively. The healthcare workers perceived their own and patient safety, and comfortability of facemasks as important, but according to their experiences, these properties were not evident with the current facemasks. They considered protection properties more important than environmental values. However, biodegradability and biobased material were seen as desired properties in facemasks. Based on the results, the current facemasks do not meet users' expectations well enough. Especially the design, breathability, and sustainability issues should be taken more into account.
    Sprache Englisch
    Erscheinungsdatum 2021-08-07
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ISSN 2039-4403
    ISSN (online) 2039-4403
    DOI 10.3390/nursrep11030059
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  6. Artikel: Determination of monosaccharide composition in plant fiber materials by capillary zone electrophoresis

    Rovio, Stella / Simolin, Helena / Koljonen, Krista / Sirén, Heli

    Journal of chromatography. A. 2008 Mar. 21, v. 1185, no. 1

    2008  

    Abstract: The neutral sugar composition of acid hydrolyzed extracts of cellulose fiber samples, i.e. oat spelt, wheat straw, thermomechanica pulp (TMP) made of spruce, aspen stemwood, and bleached birch kraft pulp, was determined by a new capillary zone ... ...

    Abstract The neutral sugar composition of acid hydrolyzed extracts of cellulose fiber samples, i.e. oat spelt, wheat straw, thermomechanica pulp (TMP) made of spruce, aspen stemwood, and bleached birch kraft pulp, was determined by a new capillary zone electrophoresis (CZE) method employing an alkaline background electrolyte. The method relies on in-capillary reaction and direct UV detection at wavelength 270nm. Neutral carbohydrates d-(+)-galactose, d-(+)-glucose, l-rhamnose, d-(+)-mannose, d-(-)-arabinose, and d-(+)-xylose were simultaneously separated. The calibration plots were linear over a range from 10 to 150mg/L for d-(+)-galactose, l-rhamnose, d-(+)-mannose, and d-(-)-arabinose and from 50 to 400mg/L for d-(+)-glucose and d-(+)-xylose. Relative standard deviations (RSDs) of peak areas during a 5-day analysis period varied from 3.3% for galactose to 11.8% for rhamnose. RSDs of migration times varied between 0.3 and 0.7%. The detection limit (at S/N 3) was 5mg/L for each monosaccharide. The results obtained by CZE agreed well with results obtained by high-performance anion-exchange chromatography. Glucose and xylose were the two predominant monosaccharides in the plants, except in the spruce TMP sample where glucose and mannose dominated.
    Schlagwörter wood ; wood pulp ; wheat straw ; kraft pulp ; thermomechanical pulping ; kraft pulping ; acid hydrolysis ; sugars ; monosaccharides ; carbohydrate composition ; capillary zone electrophoresis
    Sprache Englisch
    Erscheinungsverlauf 2008-0321
    Umfang p. 139-144.
    Erscheinungsort Amsterdam; New York: Elsevier
    Dokumenttyp Artikel
    ZDB-ID 218139-3
    ISSN 0021-9673 ; 0378-4355 ; 0376-737X
    ISSN 0021-9673 ; 0378-4355 ; 0376-737X
    DOI 10.1016/j.chroma.2008.01.031
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    Verfügbar in ZB MED Köln/Königswinter

    Zs.A 813: Hefte anzeigen Standort:
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  7. Artikel: Determination of monosaccharide composition in plant fiber materials by capillary zone electrophoresis.

    Rovio, Stella / Simolin, Helena / Koljonen, Krista / Sirén, Heli

    Journal of chromatography. A

    2008  Band 1185, Heft 1, Seite(n) 139–144

    Abstract: The neutral sugar composition of acid hydrolyzed extracts of cellulose fiber samples, i.e. oat spelt, wheat straw, thermomechanica pulp (TMP) made of spruce, aspen stemwood, and bleached birch kraft pulp, was determined by a new capillary zone ... ...

    Abstract The neutral sugar composition of acid hydrolyzed extracts of cellulose fiber samples, i.e. oat spelt, wheat straw, thermomechanica pulp (TMP) made of spruce, aspen stemwood, and bleached birch kraft pulp, was determined by a new capillary zone electrophoresis (CZE) method employing an alkaline background electrolyte. The method relies on in-capillary reaction and direct UV detection at wavelength 270 nm. Neutral carbohydrates D-(+)-galactose, D-(+)-glucose, L-rhamnose, D-(+)-mannose, D-(-)-arabinose, and D-(+)-xylose were simultaneously separated. The calibration plots were linear over a range from 10 to 150 mg/L for D-(+)-galactose, L-rhamnose, D-(+)-mannose, and D-(-)-arabinose and from 50 to 400mg/L for D-(+)-glucose and D-(+)-xylose. Relative standard deviations (RSDs) of peak areas during a 5-day analysis period varied from 3.3% for galactose to 11.8% for rhamnose. RSDs of migration times varied between 0.3 and 0.7%. The detection limit (at S/N 3) was 5mg/L for each monosaccharide. The results obtained by CZE agreed well with results obtained by high-performance anion-exchange chromatography. Glucose and xylose were the two predominant monosaccharides in the plants, except in the spruce TMP sample where glucose and mannose dominated.
    Mesh-Begriff(e) Avena/chemistry ; Carbohydrates/analysis ; Electrophoresis, Capillary/methods ; Hydrolysis ; Monosaccharides/analysis ; Picea/chemistry ; Plants/chemistry ; Triticum/chemistry
    Chemische Substanzen Carbohydrates ; Monosaccharides
    Sprache Englisch
    Erscheinungsdatum 2008-03-21
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 1171488-8
    ISSN 1873-3778 ; 0021-9673
    ISSN (online) 1873-3778
    ISSN 0021-9673
    DOI 10.1016/j.chroma.2008.01.031
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