Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Andries J. Koops"'
Autor:
Nathalie G.E. Smits, Emiliano De Dominicis, Andries J. Koops, Rian Kraan, Samim Saner, H.J. Van Der Fels-Klerx, Elise Hoek-van den Hil
Publikováno v:
Heliyon, Vol 9, Iss 10, Pp e19687- (2023)
Consumption of low levels of egg already can evoke harmful physiological responses in humans in those allergic to eggs. By detection of egg in food products, using Egg ELISA kits to determine its unintended presence, food producers can respond to avo
Externí odkaz:
https://doaj.org/article/6cc4a950ddc14a269f4fe9361df531f9
Autor:
Harry H. Jonker, Andries J. Koops
Publikováno v:
Journal of Experimental Botany. 45:1623-1631
Fructan: fructan fructosyl transferase (FFT), one of the enzymes involved in the synthesis of β-2,1 linked fructose polymers has been purified 205-fold from tubers of Helianthus tuberosus harvested in the accumulation phase. The molecular weight of
Autor:
Henri W. Groeneveld, Andries J. Koops
Publikováno v:
Annals of Botany. 70:537-542
[1- 14 C]-ethanol supplied to the cotyledons of 9-d-old Euphorbia lathyris seedlings was rapidly incorporated into unsaponifiable lipids, particularly into sterols, latex triterpenols and into the triterpene ketones of the epicuticular wax. The [ 14
Publikováno v:
Potato Research. 35:451-455
Methods were developed for clean-up of potato tuber extracts on solid phase extraction CN-cartridges and for analysis of steroidal glycoalkaloids by reversed phase HPLC. The alkaloids α-solanine, α-chaconine, α-solasonine and α-solamargine could
Autor:
Andries J. Koops, Henri W. Groeneveld
Publikováno v:
Annals of Botany. 68:455-461
The cotyledons of Euphorbia lathyris L. take up sucrose and amino acids from the endosperm. The interaction between the uptake of sucrose and that of amino acids by cotyledons of intact seedlings was investigated. Sucrose (100 mol m -3 ) reduced vali
Autor:
Andries J. Koops, Henri W. Groeneveld
Publikováno v:
Journal of Plant Physiology. 138:142-149
Summary Intact seedlings of Euphorbia lathyris were used to measure the daily production of sterols, latex triter-penols and wax triterpene ketones, and to estimate the participation of sucrose and threonine in the synthesis of these lipids. In the e
Publikováno v:
Plant Science. 74:193-201
The triterpenoid biosynthesis from sucrose and several amino acids was investigated with 9-day-old Euphorbia lathyris seedlings. Tracer experiments with [U-14C]sucrose demonstrated that sucrose was mainly incorporated into latex triterpenols. Several
Publikováno v:
Plant Science. 74:185-191
In the etiolated seedling of Euphorbia lathyris L., three groups of triterpenoids were found, located at different sites. The extracted triterpenoids were purified by TLC and HPLC and identified by GC/MS. Latex consisted mainly of triterpene alcohols
Autor:
Henri W. Groeneveld, Andries J. Koops
Publikováno v:
Journal of Experimental Botany. 41:1279-1285
Upon germination, the endosperm triacylglycerols and proteins were converted to sucrose and amino acids. During early postgerminative growth, the rate of sucrose and amino acid production exceeded the rate of uptake by the cotyledons. As a result, th
Publikováno v:
Physiologia Plantarum. 67:227-234
In contrast to the light-promoted uptake by mesophyll cells, light slightly inhibited sucrose uptake by stripped leaf disks of Commelina benghalensis L. This phenomenon appeared to result from a light-promoted vein-associated release, as light stimul