Acetylenic compounds in stored packaged carrots

Lund, Eric D.; Bruemmer, Joseph H.

doi:10.1002/jsfa.2740540215

Cited by 15 publications

(16 citation statements)

References 7 publications

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“…www.jss-journal.com centration levels of polyacetylenes found in the present study were within the levels previously reported in peeled carrots [13,34]. The carrot peel contained over a ten-fold higher concentration of FaDOH than the corresponding peeled carrots (Table 4, Fig.…”

Section: Spatial Distribution Of Polyacetylenes In Carrotssupporting

confidence: 83%

“…By detecting the compounds at 205 nm, the UV sensitivity is improved approximately ten times and consequently the detection and quantification limits of the polyacetylenes. This is especially important as the concentration in carrots can be relatively low i. e. less than 5 mg/kg FW [13,14,34]. However, many other compounds also absorb UV light at 205 nm and this is particularly the case in carrot root extracts.…”

Section: Chromatographymentioning

confidence: 96%

“…Polyacetylenes are well-known antifungal compounds that may accumulate during post harvest storage or during growth in the field, and hence may explain large differences between carrot cultivars/genotypes in their total content of polyacetylenes as well as of individual polyacetylenes [13]. Other factors that have a significant impact on the polyacetylene content are water stress, storage time, location, root size and genotype [13,31,34]. The mean CV calculated as a mean for three replicates of each genotype clearly showed that there was a large variation in the content of polyacetylenes between the investigated genotypes (Table 4).…”

Section: Spatial Distribution Of Polyacetylenes In Carrotsmentioning

confidence: 98%

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Determination of polyacetylenes in carrot roots (Daucus carota L.) by high‐performance liquid chromatography coupled with diode array detection

Christensen¹,

Kreutzmann²

2007

J of Separation Science

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A new high-performance liquid chromatographic method with diode array detection was developed for the separation and simultaneous determination of the carrot polyacetylenes falcarindiol (FaDOH), falcarindiol 3-acetate (FaDOAc) and falcarinol (FaOH) in carrot root extracts. The optimal chromatographic conditions were achieved on a C18 column with a linear gradient elution of water and acetonitrile as mobile phases, at the flow rate of 1.0 mL/min. All calibration curves of the three carrot polyacetylenes showed good linear regression (R2 > 0.998) within the test ranges. The developed method showed good precision for quantification of all polyacetylenes with overall intraday and interday variation of less than 3.3% and with average recovery rates of 99.2, 96.8 and 99.7% for FaDOH, FaDOAc and FaOH, respectively. The LOD (S/N = 3) and LOQ (S/N = 10) were less than 0.19 and 0.42 microg/mL, respectively, for all analytes. The established method was successfully used to determine the spatial distribution of FaDOH, FaDOAc and FaOH in six carrot genotypes (Bolero, Independent, Line 1, Mello Yello, Purple Haze and Tornado) by analysing peeled carrots and the corresponding peels for these polyacetylenes.

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Section: Spatial Distribution Of Polyacetylenes In Carrotssupporting

confidence: 83%

Section: Chromatographymentioning

confidence: 96%

Section: Spatial Distribution Of Polyacetylenes In Carrotsmentioning

confidence: 98%

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Determination of polyacetylenes in carrot roots (Daucus carota L.) by high‐performance liquid chromatography coupled with diode array detection

Christensen¹,

Kreutzmann²

2007

J of Separation Science

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“…The total amount of polyacetylenes was highest in Line 2 (9.11 mg/100 g FW) and lowest in Nairobi (5.54 mg/100 g FW). The concentration levels of polyacetylenes were within the levels previously reported in peeled carrots (Lund & Bruemmer, 1991;Hansen et al, 2003;Czepa & Hofmann, 2004;Kidmose et al, 2004;. Many factors may have a significant impact on the polyacetylene content in carrots e.g.…”

Section: Polyacetylenesmentioning

confidence: 65%

Investigation of bitterness in carrots (Daucus carota L.) based on quantitative chemical and sensory analyses

Kreutzmann¹,

Christensen²,

Edelenbos³

2008

LWT - Food Science and Technology

101

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“…Moreover, abiotic factors, such as mechanical stress, is reported to increase the amounts of the key bitter tastants, members of the C17-polycetylenes, present in native carrots (Daucus carota L.) to efficiently high concentrations, causing a bitter off-flavor is perceived, occurring especially often during the production process for infant diet carrot products [79,80,[91][92][93][94][95][96][97][98]. In addition, a decrease in flavor quality accompanied by an increase in bitter taste has also been reported in raw hazelnuts (Corylus avellana L.) upon biotic stress challenges, such as upon infection by bugs, belonging to the hemipteran family, like Gonocerus acuteangulatus and Coreus marginatus [99].…”

Section: Sensomics -A Phenotyping Tool To Characterize Crops Flavor Imentioning

confidence: 99%

Functional Metabolomics – a Useful Tool to Characterize Stress-Induced Metabolome Alterations Opening New Avenues Towards Tailoring Food Crop Quality

Dawid¹,

Hille²

2018

Preprint

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The breeding of stress-tolerant cultivated plants that would allow for a reduction in harvest losses and undesirable decrease in quality attributes requires a new quality of knowledge on molecular markers associated with relevant agronomic traits, on quantitative metabolic responses of plants on stress challenges, and on the mechanisms controlling the biosynthesis of these molecules. By combining metabolomics with genomics, transcriptomics and proteomics datasets a more comprehensive knowledge of the composition of crop plants used for food or animal feed is possible. In order to optimize crop trait developments, to enhance crop yields and quality, as well as to guarantee nutritional and health factors, that provides the possibility to create functional food or feedstuffs, the knowledge about the plants' metabolome is crucial. Next to classical metabolomics studies, this review focusses on several metabolomics based working techniques, such as sensomics, lipidomics, hormonomics and phytometabolomics, which were used to characterize metabolome alterations during abiotic and biotic stress, to find resistant food crops with a preferred quality or at least to produce functional food crops are highlighted.Keywords: Plant stress, abiotic stress, biotic stress, metabolomics, phytometabolomics, sensomics, phytohormonics, LC-MS/MS, NMR, targeted metabolomics, untargeted metabolomics, functional food. Importance of metabolomics for agricultural researchIn their environment plants are often exposed to an enormous number of biotic and abiotic stress factors, such as pathogen and insect infestation as well as extreme temperatures, drought, salinity, pollutants, heavy metals or nutritional deficiencies, that lead to harvest or quality losses, such as the formation of a pronounced bitter off-flavor, and sometimes causes toxicological problems as well as huge global economic losses [1]. The breeding of stress-tolerant cultivated plants that would allow for a reduction in harvest losses and undesirable decrease in quality attributes requires a new quality of knowledge on molecular markers associated with relevant agronomic traits, on quantitative metabolic responses of plants on stress challenges, and on the mechanisms controlling the biosynthesis of these molecules. Thereby, the knowledge of the biologically active metabolites, especially, secondary metabolites as well as metabolic networks of primary and secondary metabolites that were affected upon plant stress conditions are inalienable. For a long time, primary and also secondary metabolites were simply considered as one of the end-products of gene expression and protein activity. Nowadays, it is increasingly accepted that lowmolecular weight molecules modulate macromolecular processes through, e. g. feedback inhibitionand by signaling phytohormons [8]. Therefore, Dixon et al. [8] conclude that, metabolomic studies are "intended to provide an integrated view of the functional status of an organism".Although for a single plant like Arabidosis thaliana no more than ...

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Acetylenic compounds in stored packaged carrots

Cited by 15 publications

References 7 publications

Determination of polyacetylenes in carrot roots (Daucus carota L.) by high‐performance liquid chromatography coupled with diode array detection

Determination of polyacetylenes in carrot roots (Daucus carota L.) by high‐performance liquid chromatography coupled with diode array detection

Investigation of bitterness in carrots (Daucus carota L.) based on quantitative chemical and sensory analyses

Functional Metabolomics – a Useful Tool to Characterize Stress-Induced Metabolome Alterations Opening New Avenues Towards Tailoring Food Crop Quality

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Acetylenic compounds in stored packaged carrots

Cited by 15 publications

References 7 publications

Determination of polyacetylenes in carrot roots (Daucus carota L.) by high‐performance liquid chromatography coupled with diode array detection

Determination of polyacetylenes in carrot roots (Daucus carota L.) by high‐performance liquid chromatography coupled with diode array detection

Investigation of bitterness in carrots (Daucus carota L.) based on quantitative chemical and sensory analyses

Functional Metabolomics &ndash; a Useful Tool to Characterize Stress-Induced Metabolome Alterations Opening New Avenues Towards Tailoring Food Crop Quality

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About

Functional Metabolomics – a Useful Tool to Characterize Stress-Induced Metabolome Alterations Opening New Avenues Towards Tailoring Food Crop Quality