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Encimska aktivnost jagod v stresnih pogojih : diplomska naloga = Enzymic activity of strawberries under stress conditions : graduation thesis
Mozetič, Branka
Jagode kultivarja Marmolada smo pred skladiščenjem v normalni atmosferi pri 1 °C kratkotrajno tretirali (24 ur) v atmosfero dušika, ogljikovega dioksida ter hlapih acetaldehida. Raziskovali smo vpliv ...dušika in ogljikovega dioksida na podaljšanje obstojnosti in kakovosti jagod ter vpliv dodanega acetaldehida na aromo jagod. Tretiranje z acetaldehidom je povzročilo akumulacijo acetaldehida, etilacetata in etanola. V plodovih tretiranih z dušikom se je akumuliralo več acetaldehida in etanola in enaka količina etilacetata kot pri jagodah, ki so bile tretirane z ogljikovim dioksidom. V plodovih se akumulira tudi metanol, neodvisno od tretiranja. Atmosfera dušika in ogljikovega dioksida vzpodbudi delovanje piruvat dekarboksilaze. Povečanje aktivnosti alkohol dehidrogenaze smo zasledili v plodovih tretiranih z dušikom in acetaldehidom. Atmosfera dušika zadrži spremembo barve in mehčanje plodov. Pri plodovih tretiranih s ogljikovim dioksidom je bila trdota večja kot pri plodovih tretiranih z dušikom. Dodan acetaldehid pospeši spremembo barve in mehčanje jagod. Na vsebost suhe snovi, sladkorjev in organskih kislin tretiranja nimajo vpliva.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [BF, Oddelek za živilstvo] : [B. Mozetič], 1998
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