ISSN:
1871-4528
Keywords:
Kartoffelaroma
;
Düngung
;
Solanum Tuberosum
;
Stickstoff
;
Kalium
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Description / Table of Contents:
Summary The effect of different nitrogen and potassium fertiliser regimes on the composition of the aroma of native potato was studied over two years in pot experiments. Analysis was done on test material with various amounts of organically fixed nitrogen and potassium (Table 1). There were clear quantitative differences in the aromatic spectrum over a wide range of nitrogen and potassium inputs. Individual components altered within the spectrum especially after high nitrogen inputs. Statistical analysis showed that only a few components could be compared in the experimental structure (Table 2), namely n-pentanol, n-hexanol, (E)-2-hexenal, n-heptanal and isomers of 2,4-decadienal (Figures 2, 3 and 4). It can be postulated that changes in the aroma of potato after increased fertiliser inputs are due to saturated and unsaturated aldehydes with their low sensory threshold values and their odour qualities. Quantitative changes of aromatics are discussed in relation to their precursors, unsaturated fatty acids from the lipid fraction of the tubers. How such changes in the raw material are reflected in potato products will require further experimentation.
Notes:
Zusammenfassung Unter dem Einfluss differenzierter Stickstoff- und Kaligaben reagieren einzelne Aromastoffe der Kartoffel mit einem Konzentrationsanstieg. Es handelt sich dabei um die Komponenten n-Pentanol, n-Hexanol, n-Heptanal, (E)-2-Hexenal und die beiden Isomere des 2,4-Decadienals. Der Einfluss hoher und später Stickstoffgaben auf das Aromaspektrum ist deutlicher ausgeprägt, als der einer Kalidüngung. Im Hinblick auf die sensorische Qualität des Rohstoffes Kartoffel kommt dabei einzelnen Verbindungen der Charakter von ‘Leitsubstanzen’ zu.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02358038
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