Multi‐method comparison of carrot quality from a conventional and three organic cropping systems with increasing levels of nutrient recycling

Paoletti, F.; Raffo, Antonio; Kristensen, Hanne Lakkenborg; Thorup‐Kristensen, Kristian; Seljåsen, Randi; Torp, Torfinn; Busscher, Nicolaas; Ploeger, A.; Kahl, Johannes

doi:10.1002/jsfa.5819

Cited by 19 publications

(27 citation statements)

References 35 publications

(46 reference statements)

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“…-1 of fresh raw material while in vegetable products for children up to 3 years maximally to 250 mg·kg -1 . The highest nitrite content was determined in carrot roots from traditional cultivation, which confirms literature data (Woese et al, 1997;Rembiałkowska, 2007;Paoletti et al, 2012). The nitrite content is strongly correlated with nitrogen fertilization, which in organic farms is limited only to organic fertilization (e.g.…”

Section: Research Results and Discussionsupporting

confidence: 87%

“…Investigation of the juice colour with the use of suitable devices is often replaced by organoleptic assessment which is better for assessment of suitability of vegetables for sale and processing since it includes consumers' preferences. Paoletti et al, (2012) comparing changes of colour in the CIE Lab system only emphasised the humidity and thermal conditions and not the cultivation system. During analysis of the obtained results of research, one should remember that majority of scientific information that compare products from various cultivation systems assesses them shortly after harvesting or storing in similar conditions and this paper aims at assessment of quality properties of carrot easily available in traditional or organic food shops.…”

Section: Research Results and Discussionmentioning

confidence: 99%

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Assessment of Particular Qualities of Carrot Availalbe in Selected Retailers in Krakow

Wrona

Pogoń

Dróżdż³

2017

Agricultural Engineering

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The objective of the paper was assessment of the selected qualities of carrot from retailer's shops, organic and traditional food shops in Krakow. The following quality parameters of the fruit pulp were investigated: content of extract, sugars, polyphenols, nitrite, flavonoids, beta-carotene, colour, and antioxidant activity. The investigation shows that the content of nitrogen (V) in the samples of carrot from traditional cultivations was higher than in case of carrot from organic crops, and in case of a sample from traditional cultivation it exceeds the admissible norms. However, the research which was carried out provides no justification for the statement that the content of nitrate (III) depends on the production system of carrot. The research on the content of polyphenols, flavonoids and antioxidant activity of juice proved the increased antioxidant ability of carrot that was traditionally cultivated with reference to carrot cultivated organically. However, the differences were not statistically confirmed. Betacarotene content in all samples was comparable regardless the cultivation system. Content of extracts, total carbohydrates and sucrose was significantly higher for carrot from traditional crops than for ecocarrot.

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Section: Research Results and Discussionsupporting

confidence: 87%

Section: Research Results and Discussionmentioning

confidence: 99%

Assessment of Particular Qualities of Carrot Availalbe in Selected Retailers in Krakow

Wrona

Pogoń

Dróżdż³

2017

Agricultural Engineering

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“…2,20,29 There was no effect of cropping system on the contents of DM and sugars (Figure 2), despite that the nitrogen supply differed between the systems (Table 1). Neither Paoletti et al 7 nor Jensen et al 36 found any effect of cropping system on the DM content of carrots grown in 2007 and 2008.…”

Section: 22mentioning

confidence: 90%

“…In 2007 and 2008, subsamples of carrots were taken from the same fields and sent for analyses at two other research laboratories in Europe. In one laboratory, the DM content of peeled carrots was significantly higher in 2008 (11.3 g/100 g FW) than in 2007 (9.2 g/100 g FW), 7 while there were no significant differences between years in DM content of unpeeled carrots (9.5 g/100 g FW both years) in the other laboratory. 36 We found no significant differences (P > 0.05) between DM contents of carrots grown in 2007 and 2008 (Table 4).…”

Section: 22mentioning

confidence: 91%

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Eating Quality of Carrots (Daucus carota L.) Grown in One Conventional and Three Organic Cropping Systems over Three Years

Bach

Kidmose

Kristensen

et al. 2015

J. Agric. Food Chem.

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The eating quality of carrots (Daucus carota L.) was investigated to evaluate the impact of cropping systems (one conventional and three organic systems) and growing years (2007, 2008, and 2009) on root size, chemical composition, and sensory quality. The content of dry matter, sugars, polyacetylenes, and terpenes as well as the sensory quality and root size were related to the climate during the three growing years. A higher global radiation and a higher temperature sum in 2009 as compared to 2007 and 2008 resulted in larger roots, higher contents of dry matter, sucrose, total sugars, and total polyacetylenes, and lower contents of terpenes, fructose, and glucose. No differences were found between conventional and organic carrots with regard to the investigated parameters. This result shows that organically grown carrots have the same eating quality as conventionally grown carrots, while being produced in a more sustainable way. KEYWORDS: Daucus carota L., organic, conventional, polyacetylenes, terpenes, sugar, dry matter, sensory descriptive analysis, climateCarrot (Daucus carota L.) is an important food crop with a low sensitivity to cropping system, 1 which makes it well-suited for organic production. Carrots are consumed both raw and cooked or processed into frozen products or juice. The eating quality of carrots is determined by cultivar, fertilization, geographical location, and climate.2−5 The cultivar and the year-to-year variation in climate has a bigger influence on the quality of carrots than the cropping system. 6 Paoletti et al. 7 also reported that year had a greater effect on carrot quality than conventional and organic cropping, but they did not take variation in climate into consideration.Consumers expect organic foods to be healthier and safer than conventional foods and to taste better, but the scientific literature is contradictionary and it has been shown that there is no difference in eating quality between organic and conventional foods. 6,8,9 A recent meta-analysis, however, showed that organic foods have higher contents of antioxidants and lower contents of cadmium, nitrate, nitrite, and pesticide residues than the similar conventional food.10 Only a few studies have compared the sensory quality of conventionally and organically grown carrots under comparable conditions. 7,11 Haglund et al. 12 found that organically grown carrots were more bitter and had less carrot flavor than conventional carrots, but the results were presented as averages across several cultivars and growing sites. Studies comparing chemical composition of conventionally and organically grown vegetables have mainly focused on nutrients, 8,9,13 and selected secondary metabolites such as carotenoids, polyacetylenes, and phenolic acids. 6,14,15 However, studies are lacking which compare the eating quality of conventionally and organically grown vegetables under comparable field conditions. 11In organic vegetable production, synthetic pesticides are banned and the type and intensity of fertilization is restrict...

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Impacts of nitrogen practices on yield, grain quality, and nitrogen‐use efficiency of crops and soil fertility in three paddy‐upland cropping systems

LIU

Chen

et al. 2020

J Sci Food Agric

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BACKGROUND Global food security faces a number of challenges due to increasing population, climate change, and urbanization, while excessive use of nitrogen fertilizers has become a major challenge for sustainable, intensive agriculture. Assessing the impact of agronomic management practices on seed yield, grain quality, and soil fertility is a critical step in understanding nutrientuse efficiency. RESULT The comprehensive evaluation index had good fitness to that of single attribute (i.e. seed yield, crop quality and soil fertility), indicating that the comprehensive evaluation index was reliable. Applying controlled‐release urea (rice in wheat and oilseed rape field: 150 kg N ha−1, other crops: 120 kg N ha−1) plus common urea (30 kg N ha−1) incorporating straw from the previous season across the growing season for cereal and oilseed crops showed a slight improvement in seed productivity and Nuse efficiency among three cropping systems in the traditional evaluation method. Compared with local farm practice (applying common urea of 150 kg N ha−1), applying these practices in combination based on the outcome of the comprehensive evaluation index method decreased the seed yield by −1.27 ~ 29.8% but improved quality and soil fertility for the paddy‐upland cropping system, respectively. CONCLUSION Properly managing N application by applying partial and fully controlled release of urea with or without straw incorporation for a specific crop system has the potential to provide a better compromise among yield, grain quality, and soil fertility in southern China. © 2020 Society of Chemical Industry

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Multi‐method comparison of carrot quality from a conventional and three organic cropping systems with increasing levels of nutrient recycling

Abstract: The results indicated that it was not possible to discriminate over the years between carrots from conventional and different organic cropping systems even though controlled conditions and a multi-method approach of analysis were adopted.

Cited by 19 publications

References 35 publications

Assessment of Particular Qualities of Carrot Availalbe in Selected Retailers in Krakow

Assessment of Particular Qualities of Carrot Availalbe in Selected Retailers in Krakow

Eating Quality of Carrots (Daucus carota L.) Grown in One Conventional and Three Organic Cropping Systems over Three Years

Impacts of nitrogen practices on yield, grain quality, and nitrogen‐use efficiency of crops and soil fertility in three paddy‐upland cropping systems

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