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Ugotavljanje škroba v krompirju z različnimi metodami = The starch determination in potato by different methodsStekar, Jasna ...Škrob je v suhi snovi krompirja prevladujoča spojina in odločilna za energijsko vrednost gomolja. Vsebnost škroba razen od kultivarja zavisi predvsem od tipa tal, gnojenja, bolezni in pogojev ... skladiščenja. Zato je marsikdaj dobrodošlo hitro ugotavljanje škroba. Uporabljali smo gravimetrično metodo s tehtnico po Parowu oz. Heck-Braun 80 DBP, katere osnova je tehtanje krompirja pod vodo, določitev škroba na osnovi gostote gomoljev in z enačbami ter polarimetrično metodo po Ewersu. Ta temelji na optični aktivnosti optično aktivnih spojin, in sicer smo uporabili postopek, ki ga priporoča evropsko združenje za raziskave krompirja (EAPR) in uradno predpisan postopek iz Metodenbucha. Za analizo smo uporabili gomolje treh kultivarjev: jaka, igor in desiree. Gomolje smo glede na njih maso razdelili v tri razrede, igor in desiree v tri, jaka v štiri. Gomolje vsakega razreda smo analizirali v štirih ponovitvah. Ugotovili smo, da da je tehtnica po Parowu značilno večje rezultate(P<0,05) od tehtnice Heck-Braun. Med postopkoma pri polarimetrični metodi ni bilo statistično značilnih razlik. Iz rezultatov lahko sklepamo, da na rezultate gravimetrične in polarimetrične metode vplivata tako kultivar kot masa gomolja.Source: Tehnologija, hrana, zdravje. Knjiga del = Technology, food, nutrition. Proceedings (Str. 899-904)Type of material - conference contributionPublish date - 1997Language - slovenianCOBISS.SI-ID - 450184
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source: Tehnologija, hrana, zdravje. Knjiga del = Technology, food, nutrition. Proceedings (Str. 899-904)
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Database name | Field | Year |
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Stekar, Jasna | 00397 |
Stibilj, Vekoslava | 01873 |
Koman Rajšp, Mojca | 05624 |
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