Now showing items 1-9 of 9

    • Activity of Spent Coffee Ground Cinnamates against Wood-decaying Fungi in vitro 

      Barbero-Lopez, Aitor; Ochoa-Retamero, Antonio; Lopez-Gomez, Yeray; Vilppo, Teemu; Venäläinen, Martti; Lavola, Anu; Julkunen-Tiitto, Riitta; Haapala, Antti (2018)
      Fungi and microbes can remarkably degrade the appearance and durability of organic materials, such as wood. The inhibitory effects of natural phenolics may offer more sustainable alternatives to preserve wood than the toxic ...
    • Adsorption of bark derived polyphenols onto functionalized nanocellulose: Equilibrium modeling and kinetic 

      Asante, Bright; Sirviö, Juho; Li, Panpan; Lavola, Anu; Julkunen-Tiitto, Riitta; Haapala, Antti; Liimatainen, Henrikki (Wiley, 2020)
      This article describes the kinetics and capacity of adsorbing condensed conifer tannins onto cationic cellulose nanocrystals (CCNCs). Batch adsorption experiments were carried as a function of pH, contact time, and initial ...
    • Anti-oxidative and UV-absorbing biohybrid film of cellulose nanofibrils and tannin extract 

      Li, Panpan; Sirviö, Juho Antti; Haapala, Antti; Khakalo, Alexey; Liimatainen, Henrikki (Elsevier BV, 2019)
      Cellulose and tannin are both abundant and biodegradable natural polymers. This study proposes a strategy to construct biohybrid films combining the characteristics of cationic cellulose nanofibrils (CCNFs) and tannin ...
    • Automated image analysis tool to measure microbial growth on solid cultures 

      Ancin-Murguzur, Fransisco Javier; Barbero-López, Aitor; Kontunen-Soppela, Sari; Haapala, Antti (Elsevier BVAlankomaat, 2018)
      Microbial growth on culture media is a commonplace technique to estimate the growth rate and virulence of microbes, assess inhibitory effects of compounds and estimate potential damages of plant pathogens in agriculture. ...
    • Casein-magnesium composite as an intumescent fire retardant coating for wood 

      Uddin, Mezbah; Kiviranta, Kalle; Suvanto, Sari; Alvila, Leila; Leskinen, Jari; Lappalainen, Reijo; Haapala, Antti (Elsevier BVSveitsi, 2020)
      Fire hazard associated to wood and wood-based products is a clear shortcoming of natural building materials and hence the use of fire retardants is mandated by national building codes. In this study, we have synthesized a ...
    • Effect of Cellulose Nanofibrils on the Bond Strength of Polyvinyl Acetate and Starch Adhesives for Wood 

      Jiang, Wen; Tomppo, Laura; Pakarinen, Timo; Sirviö, Juho A; Liimatainen, Henrikki; Haapala, Antti (NC State University, 2018)
      Nanocellulose is a competitive reinforcement material for use in biocomposite structures and fibrous products. In this study, adhesive mixtures of dicarboxylic acid cellulose nanofibrils (CNF) were dispersed into commercial ...
    • Pyrolysis distillates from tree bark and fibre hemp inhibit the growth of wood-decaying fungi 

      Barbero-López, Aitor; Chibily, Soumaya; Tomppo, Laura; Salami, Ayobami; Ancin-Murguzur, Francisco Javier; Venäläinen, Martti; Lappalainen, Reijo; Haapala, Antti (Elsevier BVAlankomaat, 2019)
      The quest for cleaner wood preservatives is one of the major foci of contemporary wood science. Pyrolysis distillates are potential intermediates to extract large volumes of bioactive chemicals. The aim of this study was ...
    • Shaping the concept of bioeconomy in participatory projects - An example from the post-graduate education in Finland 

      Takala, Tuomo; Tikkanen, Jukka; Haapala, Antti; Pitkänen, Sari; Torssonen, Piritta; Valkeavirta, Rosa; Pöykkö, Tapani (Elsevier BV, 2019)
      Evolving complex concepts, such as bioeconomy, cannot be applied without selecting (consciously or unconsciously) some definitions and excluding others. This process of selection may have a considerable impact on how ...
    • Tree provenance affects the growth and bioenergy potential of juvenile silver birch 

      Haapala, Antti; Kontunen-Soppela, Sari; Oksanen, Elina; Rousi, Matti; Mola Yudego, Blas (Natural Resources Institute Finland, 2017)
      The ever-growing need for renewable resources for energy production makes us look more closely at biomass reserves so far unused and considered insufficient in terms of energy content, availability or cost. In this study ...