Untersuchungen über flüchtige Aromastoffe der Kartoffel. II. Der Einfluß differenzierter Nährstoffgaben auf das Spektrum der Aromastoffe in Kartoffeln

Fischer, Jörgen

doi:10.1007/bf02358038

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…While heptanal showed a higher increase after storage in K 2 SO 4 and KCl tubers compared to the control in Laura, the increase in Marabel was also high in the control. Fischer (1991) reported, some effect on hexanal and heptanal in freshly harvested tubers due to increasing K fertilisation, depending on the year. Moreover, the author presumed that volatile compounds were affected by increasing N application.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, the author presumed that volatile compounds were affected by increasing N application. However, in Fischer (1991) , the tubers were not subjected to any storage period, presuming stronger storage effects compared to the effects of fertilisation on volatile compounds.…”

Section: Discussionmentioning

confidence: 99%

“…To date, there have been few studies on the influence of fertilisation on potato aroma. It has been reported that individual volatiles are positively influenced by K fertilisation ( Khan et al, 1977 ; Fischer, 1991 ). However, it has not yet been investigated whether the fertilisation form of KCl and K 2 SO 4 have an influence on the volatile compounds.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the Effects of Potassium Sulphate and Potassium Chloride Fertilisation on Quality Parameters, Including Volatile Compounds, of Potato Tubers After Harvest and Storage

2022

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Potatoes are an important staple food with high yield potential and great nutritional value. Potassium (K) fertilisation can increase both tuber yield and quality, but its effects differ depending on the K fertilisation form. Potatoes are known to be chloride sensitive, since chloride ions can influence, for example, the starch content. Therefore, fertilisations shortly before planting using potassium sulphate (K2SO4) are often recommended instead of potassium chloride (KCl). However, the use of different fertilisation forms is contradictory, and the chloride sensitivity of potatoes remains unclear. To examine this issue in more detail, a 2-year field experiment using two cultivars, “Laura” and “Marabel,” was conducted. K fertilisation with 240 kg K2O as K2SO4 and KCl was applied, and the control remained unfertilised. Quality traits, including internal and external parameters, were analysed after harvest and after 5 months of storage at 6°C. The results revealed minor effects on yield, but the starch content and ascorbic acid concentration were reduced due to the KCl supply. Furthermore, the reducing sugar concentration in tubers increased during storage more after KCl compared to K2SO4 fertilisation. Moreover, volatile compounds were affected by the K fertilisation form, with higher levels of lipid-derived off-flavour compounds after KCl application. However, the effects of cultivation year, cultivar, and storage interacted with the influence of the fertilisation form. In summary, KCl fertilisation can disadvantageously influence several quality traits, but the use of potato cultivars should also be considered when recommending fertilisers.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparison of the Effects of Potassium Sulphate and Potassium Chloride Fertilisation on Quality Parameters, Including Volatile Compounds, of Potato Tubers After Harvest and Storage

2022

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“… i Table references: 1, Varns & Glynn (1979); 2, Waterer & Pritchard (1984); 3, Fischer (1991); 4, Josephson & Lindsay (1987); 5, Buttery et al . (1970); 6, Self et al .…”

Section: Resultsmentioning

confidence: 99%

Gas chromatography–mass spectrometry analyses of volatile organic compounds from potato tubers inoculated with Phytophthora infestans or Fusarium coeruleum

et al. 2001

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Volatile organic compounds (VOCs) collected from potato tubers inoculated with Phytophthora infestans (late blight), Fusarium coeruleum (dry rot) or sterilized distilled water (as a control) were analysed using gas chromatography±mass spectrometry (GC±MS) and gas chromatography±flame ionization detection (GC±FID). A total of 52 volatiles were identified by GC±MS in the headspaces above P. infestans-and F. coeruleum-inoculated tubers after incubation for 42 days in the dark at 108C. Of these VOCs, the six most abundant were common to both pathogens. These were benzothiazole (highest abundance), 2-ethyl-1-hexanol (second highest abundance), and at approximately equal third abundance, hexanal, 2-methylpropanoic acid-2,2-dimethyl-1-(2-hydroxy-1-methylethyl)-propyl ester, 2-methylpropanoic acid-3-hydroxy-2,4,4-trimethyl-pentyl ester and phenol. In addition, styrene also occurred at approximately equal third abundance in the headspace of F. coeruleum-inoculated tubers, but at lower abundance in the headspace of P. infestans-inoculated tubers. Some VOCs were specific to each pathogen. Butanal, 3-methylbutanal, undecane and verbenone were found at low levels only in the headspace of tubers inoculated with P. infestans, while 2-pentylfuran and copaene were found only in the headspace of tubers inoculated with F. coeruleum. Additionally GC±FID analysis identified ethanol and 2-propanol in the liquid exudate from both P. infestans-and F. coeruleum-inoculated tubers after incubation for 35 days, and in the headspace after incubation for 42 days. These data provide key information for developing a sensor-based early warning system for the detection of postharvest diseases in stored potato tubers.

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Solanum tuberosum

Lim¹

2016

Edible Medicinal and Non-Medicinal Plants

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Untersuchungen über flüchtige Aromastoffe der Kartoffel. II. Der Einfluß differenzierter Nährstoffgaben auf das Spektrum der Aromastoffe in Kartoffeln

Cited by 6 publications

References 14 publications

Comparison of the Effects of Potassium Sulphate and Potassium Chloride Fertilisation on Quality Parameters, Including Volatile Compounds, of Potato Tubers After Harvest and Storage

Comparison of the Effects of Potassium Sulphate and Potassium Chloride Fertilisation on Quality Parameters, Including Volatile Compounds, of Potato Tubers After Harvest and Storage

Gas chromatography–mass spectrometry analyses of volatile organic compounds from potato tubers inoculated with Phytophthora infestans or Fusarium coeruleum

Solanum tuberosum

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