Chemical Changes in the Industrial Extractive-Containing Sidestreams of Norway Spruce (Picea abies) During Storage
This dissertation focuses on the changes in the chemical composition of Norway
spruce (Picea abies) industrial sidestreams during outside storage, with a
particular focus on the behavior of hydrophilic and lipophilic extractive groups
as well as the selected individual extractives. Detailed chromatographic analyses
of extracted bark, needles, and stumps stored in several setups revealed the
degradation patterns of various extractive groups. Generally, hydrophilic
extractives showed more significant disruption and losses during storage than
more stable lipophilic extractives. Stilbenes, tannins, and lignans were
particularly interesting compound groups that could feasibly be used for added-value
purposes. By revealing how storage affects wood degradation, the data
gathered and presented aim to assist in the handling and processing of wood-derived
raw material to increase its potential. Industries focused on developing
wood extractive applications may particularly benefit from this information.
Keywords: Norway spruce (Picea abies), wood extractives, storage
...
Tämä väitöskirja käsittelee kuusen (Picea abies) teollisissa sivuvirroissa ulkovarastoinnin
aikana tapahtuvia kemiallisia muutoksia keskittyen erityisesti hydrofiilisten
ja lipofiilisten uuteaineryhmien (kuten stilbeenien, tanniinien ja lignaanien)
käyttäytymiseen, mutta myös yksittäisiin uuteaineisiin. Yksityiskohtaiset
kromatografiset analyysit kuoresta, neulasista ja kannoista uutetuista uuteaineista,
jotka varastoitiin erilaisissa varastointiolosuhteissa, osoittivat eri uuteaineryhmien
tyypillisiä hajoamismalleja. Työssä kootulla ja esitetyllä aineistolla on mahdollista
edistää puuperäisen uuteainerikkaan raaka-aineen kokonaisvaltaista
teollista hyödyntämistä. Osoittamalla, miten varastointi vaikuttaa puun hajoamiseen,
voidaan ennakolta arvioida ja suunnitella raaka-aineen käsittelyvaiheet
niin, että sen kemiallinen koostumus säilyy lopullista käyttökohdetta silmällä
pitäen mahdollisimman edullisena.
Avainsanat: kuusi (Picea abies), puun uuteaineet, varastointi
Publisher
Jyväskylän yliopistoISBN
978-951-39-9881-3ISSN Search the Publication Forum
2489-9003Contains publications
- Artikkeli I: Halmemies, E. S., Brännström, H. E., Nurmi, J., Läspä, O., & Alén, R. (2021). Effect of Seasonal Storage on Single-Stem Bark Extractives of Norway Spruce (Picea abies). Forests, 12(6), Article 736. DOI: 10.3390/f12060736
- Artikkeli II: Halmemies, E. S., Alén, R., Hellström, J., Läspä, O., Nurmi, J., Hujala, M., & Brännström, H. E. (2022). Behaviour of Extractives in Norway Spruce (Picea abies) Bark during Pile Storage. Molecules, 27(4), Article 1186. DOI: 10.3390/molecules27041186
- Artikkeli III: Halmemies, E. S., Brännström, H. E., Karjalainen, M., Nurmi, J., & Alén, R. (2023). Availability of extractives from various Norway spruce Picea abies stumps assortments. Journal of Wood Chemistry and Technology, 43(1), 13-27. DOI: 10.1080/02773813.2022.2152049
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Effect of Seasonal Storage on Single-Stem Bark Extractives of Norway Spruce (Picea abies)
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