Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Raimonds Makars"'
Publikováno v:
Molecules, Vol 28, Iss 5, p 2227 (2023)
Suberin is a complex polyester biopolymer, and it is practically impossible to estimate the real content of suberin in suberised plant tissues. This indicates the importance of the development of instrumental analytical methods for the comprehensive
Externí odkaz:
https://doaj.org/article/d944e6f242ea40a49e35dca66906babf
Publikováno v:
Materials Science Forum. 1071:182-188
Birch outer bark is a byproduct accumulated from birch tree (Betula pendula Roth. and Betula pubescens Ehrh.) processing and contains up to 50 wt% suberin. Suberin is a biopolyester built mostly from α,ω-bifunctional fatty acids (suberinic acids) w
Autor:
Daniela Godina, Raimonds Makars, Arnis Abolins, Aigars Paze, Mikelis Kirpluks, Janis Rizhikovs
Publikováno v:
Materials Science Forum. 1071:166-173
Global sustainability challenges prompt the world to modify their strategies and shift from a fossil-fuel-based economy to a bio-resources-based one and to the production of renewable biomass-based chemicals. Different processes exist that allow the
Autor:
Aigars Paze, Sanita Vitolina, Rudolfs Berzins, Janis Rizhikovs, Raimonds Makars, Daniela Godina, Arturs Teresko
Publikováno v:
Key Engineering Materials. 933:139-146
The aim of the study was to investigate the effect of process parameters on the production of hydrogels with antisolvent precipitation using unpurified (UB) and purified (PB) birch outer bark betulin powder samples. Experimental activities are focuse
Autor:
Rudolfs Berzins, Aigars Paze, Sanita Vitolina, Janis Rizhikovs, Raimonds Makars, Daniela Godina, Arturs Teresko
Publikováno v:
Key Engineering Materials. 933:155-161
Application of the adapted methylene blue (MB) adsorption method in determining specific surface area was investigated on particles containing hydrogels obtained from purified (99 wt%) and unpurified (60 wt%) betulin samples. In order to study the ad
Autor:
Sanita Vitolina, Aigars Paze, Rudolfs Berzins, Janis Rizhikovs, Raimonds Makars, Daniela Godina, Arturs Teresko
Publikováno v:
Key Engineering Materials. 933:147-154
Dynamic light scattering (DLS) is a well-established technique to analyze particle size in a liquid medium and sample preparation is an essential step of the analysis to obtain reliable data. In this study, the pretreatment of an aqueous suspension c
Autor:
Raimonds Makars, Daniela Godiņa, Aigars Paze, Rudolfs Berzins, Ramunas Tupciauskas, Janis Rizhikovs
Publikováno v:
Key Engineering Materials. 903:235-240
Silver birch (Betula pendula) outer bark suberin can be used as a raw material to make an adhesive for particleboards (PBs). It is a promising formaldehyde-free alternative to traditional synthetic resins. However, the adhesive is acidic, which can c
Publikováno v:
Key Engineering Materials. 903:229-234
The apparent shift in climate has resulted in the pursuit of environmentally friendly bio-based products to reduce the carbon footprint. In the scientific literature, there are many attempts to make phenol-formaldehyde resins (PFR) more sustainable b
Publikováno v:
Key Engineering Materials. 903:223-228
Analytical method has been developed and validated to determine free or leachable furfural concentration in wood-based panels. Particleboards obtained from birch wood and suberinic acids binder were chosen as a reference material. Two methods and two
Autor:
Rudolfs Berzins, Raimonds Makars, Māris Lauberts, Kristaps Stankus, Daniela Godiņa, Janis Rizhikovs, Aigars Paze
Publikováno v:
Key Engineering Materials. 903:28-33
The goal of this study was to evaluate the influence of birch outer bark (BOB) extraction solvents on the antioxidant properties of the obtained dry extracts, which were added in cosmetic product emulsions. Extracts obtained in ethanol, 2-propanol, 1