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  • Physico-chemical changes included a significant decrease in firmness during post-harvest ripening, whereas the levels of total soluble solids were found to be very similar. Ethylene as a parameter of ripening contributed to the resolution of cultivars in the over-ripe phase. On the other hand, fruit softening was not a useful parameter for distinguishing cultivars. 59 of volatiles were determined by the static headspace SPME gas chromatography with mass spectrometry and included 18 alcohols, 12 aldehydes, 10 esters, 11 terpenes, 5 lactones and 3 miscellaneous. Actually, the production of alcohols at ripe stage had almost been completed, since at the over-ripe stage they increased only slightly. Terpene levels were highest for the medium-late cultivars (Orangered, Velkopavlovická, Pinco, Silvercot and Leskora); they were predominantly limonene, a-terpineol and b-Ionone. The decrease in the concentration of terpenes in over-ripe fruit was statistically significant. There are six compounds (2-methylbutan-1-ol, 2-methylbutanal, n-hexylbutanoate, 3-methyl- 3-methylbutyric acid, g-caprolactone and g-octalactone) which taken together can be used to distinguish the two different stages of maturity, ripe and over-ripe. The most abundant of these are g-caprolactone and g-octalactone, followed by 2-methylbutan-1-ol. If the volatiles from the cultivars used in this investigation are compared using cv. Bergeron as a standard, then only 10 are required to separate each variety at the over-ripe phase. Principal component analysis clearly separated the cvs Velkopavlovická and Bergeron from all the others, which probably reflects major differences in the production of volatiles and ethylene.
  • Physico-chemical changes included a significant decrease in firmness during post-harvest ripening, whereas the levels of total soluble solids were found to be very similar. Ethylene as a parameter of ripening contributed to the resolution of cultivars in the over-ripe phase. On the other hand, fruit softening was not a useful parameter for distinguishing cultivars. 59 of volatiles were determined by the static headspace SPME gas chromatography with mass spectrometry and included 18 alcohols, 12 aldehydes, 10 esters, 11 terpenes, 5 lactones and 3 miscellaneous. Actually, the production of alcohols at ripe stage had almost been completed, since at the over-ripe stage they increased only slightly. Terpene levels were highest for the medium-late cultivars (Orangered, Velkopavlovická, Pinco, Silvercot and Leskora); they were predominantly limonene, a-terpineol and b-Ionone. The decrease in the concentration of terpenes in over-ripe fruit was statistically significant. There are six compounds (2-methylbutan-1-ol, 2-methylbutanal, n-hexylbutanoate, 3-methyl- 3-methylbutyric acid, g-caprolactone and g-octalactone) which taken together can be used to distinguish the two different stages of maturity, ripe and over-ripe. The most abundant of these are g-caprolactone and g-octalactone, followed by 2-methylbutan-1-ol. If the volatiles from the cultivars used in this investigation are compared using cv. Bergeron as a standard, then only 10 are required to separate each variety at the over-ripe phase. Principal component analysis clearly separated the cvs Velkopavlovická and Bergeron from all the others, which probably reflects major differences in the production of volatiles and ethylene. (en)
Title
  • Physico-chemical changes and volatile constituents observed in 10 apricot cultivars during post-harvest ripening
  • Physico-chemical changes and volatile constituents observed in 10 apricot cultivars during post-harvest ripening (en)
skos:prefLabel
  • Physico-chemical changes and volatile constituents observed in 10 apricot cultivars during post-harvest ripening
  • Physico-chemical changes and volatile constituents observed in 10 apricot cultivars during post-harvest ripening (en)
skos:notation
  • RIV/62156489:43510/13:00205715!RIV14-MZE-43510___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(QI91A032)
http://linked.open...iv/cisloPeriodika
  • 3
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 96194
http://linked.open...ai/riv/idVysledku
  • RIV/62156489:43510/13:00205715
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  • ethylene; firmness; respiration rate; HP-SPME-GC-MS; volatile compounds (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • CZ - Česká republika
http://linked.open...ontrolniKodProRIV
  • [8B9155C8C3B6]
http://linked.open...i/riv/nazevZdroje
  • Horticultural Science
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 40
http://linked.open...iv/tvurceVysledku
  • Krška, Boris
  • Dokoupil, Libor
  • Goliáš, Jan
  • Létal, Jiří
http://linked.open...ain/vavai/riv/wos
  • 323700800002
issn
  • 0862-867X
number of pages
http://localhost/t...ganizacniJednotka
  • 43510
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