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Title:Vsebnost sladkorjev in organskih kislin v plodovih različnih genotipov malinjaka (Rubus idaeus l.)
Authors:Špes, Maša (Author)
Kristl, Janja (Mentor) More about this mentor... New window
Kraner Šumenjak, Tadeja (Co-mentor)
Files:.pdf UN_Spes_Masa_2018.pdf (228,45 KB)
MD5: 30FB708D490A47486DDCB5379C205088
 
Language:Slovenian
Work type:Bachelor thesis/paper (mb11)
Organization:FKBV - Faculty of Agriculture and Life Sciences
Abstract:Namen raziskave je bil določiti vsebnosti sladkorjev in organskih kislin v plodovih različnih genotipov malinjaka in ugotoviti kakšen je vpliv genotipa malinjaka (Rubus idaeus L.), toplotne obdelave plodov pri pripravi nektarja in sušenja z zamrzovanjem na vsebnost sladkorjev in organskih kislin. Koncentracije sladkorjev in organskih kislin smo določili s tekočinsko kromatografijo. Analizirali smo 21 različnih genotipov malinjaka. V plodovih malinjaka je prevladovala citronska kislina, najvišja vsebnost je bila v ekstraktih zamrznjenih malin s povprečno vrednostjo 91,0 mg/g suhe snovi. Po vsebnosti so sledile jabolčna, šikimska in fumarna kislina. V ekstraktih plodov, ki so bili sušeni z zamrzovanjem je bila vrednost citronske kisline v povprečju 87,2 mg/g suhe snovi, kar je značilno več kot v ekstraktih nektarja, kjer je bila vsebnost citronske kisline v povprečju 75,9 mg/g suhe snovi. Prevladujoč sladkor v ekstraktih zamrznjenih malin in plodov sušenih z zamrzovanjem je fruktoza s povprečno vrednostjo 104,2 mg/g suhe snovi in 102,8 mg/g suhe snovi.
Keywords:maline, Rubus idaeus L., sladkorji, organske kisline, nektar, zamrznjeni plodovi, plodovi sušeni z zamrzovanjem
Year of publishing:2018
Source:Maribor
NUK URN:URN:SI:UM:DK:WNFWNQDQ
Views:600
Downloads:125
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:FKBV
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:17.08.2018

Secondary language

Language:English
Title:Sugar and Organic Acid Contents in Fruits of Different Raspberry Genotypes (Rubus idaeus L.)
Abstract:The purpose of this research was to determine the content of sugars and organic acids in fruits of different raspberry (Rubus idaeus L.) genotypes and to evaluate the effects of genetic structure, thermal treatment, and freeze-drying on the content of sugars and organic acids. The concentrations of sugars and organic acids were determined using liquid chromatography. 21 different raspberry genotypes were investigated. The dominant acid in raspberry fruit was citric acid. The highest content of citric acid was determined in the extract of frozen fruits with an average value of 91.0 mg/g dry weight, followed by malic, shikimic and fumaric acid. The average citric acid content in extracts of freeze-dried fruits was 87.2 mg/g dry weight which was higher than the average content in extracts of nectar (75.9 mg/g dry weight). The most abundant sugar in frozen raspberry extracts and extracts of freeze-dried fruits was fructose with an average content of 104.2 mg/g and 102.8 mg/g (dry weight).
Keywords:raspberry, Rubus idaeus L., sugars, organic acids, nectar, frozen fruit, freeze dried fruit


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