Variation in bioactive content in broccoli (<i>Brassica oleracea</i>var.<i>italica</i>) grown under conventional and organic production systems

Valverde, Juan Miguel; Reilly, Kim; Villacreces, Salvador; Gaffney, Michael; Grant, James; Brunton, Nigel P.

doi:10.1002/jsfa.6804

Cited by 30 publications

(23 citation statements)

References 33 publications

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“…Only one cauliflower genotype out of 2 and one organic cultivation out of 3 exhibited a higher polyphenols content with respect to conventional management [88]. Flavonoids and polyphenols broccoli content was unaffected by production practices [89], and no differences were found between biodynamic and conventional farming systems in the case of chicory [90]. Oat [91] and rice [92] grains exhibited no differences in the polyphenols content between organic and conventional farming.…”

Section: Effect Of Managementmentioning

confidence: 87%

Plant polyphenol content, soil fertilization and agricultural management: a review

Heimler

Romani

Ieri

2017

Eur Food Res Technol

132

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relevance of scientific studies on this subject. Taking into account the reviews published since 2008, a general overlook on the research topics can emphasize the main current fields in which the research is presently developed. The different subjects which may be inferred are: problems in the analytical assays of polyphenols [1][2][3][4][5], polyphenols composition of fruits and vegetables [6][7][8][9][10], the fate of polyphenols in postharvest technology [11, 12], chemistry and biochemistry [13][14][15][16], polyphenols and food [17][18][19][20][21], polyphenols and health [22][23][24][25][26][27][28]. From this short survey which takes into account only partly the last years, the great number and variety of researches on these plants metabolites can be pointed out. There is a lack of reviews on the relations between polyphenols content, fertilization and agriculture practice, with the exception of a recent review on the possibility of differentiating organic practice by means of secondary plant metabolites in carrots [29], and the review of Stefanelli et al. [18] focused on horticulture quality under minimal nitrogen and water supply.The aim of this review is concerned with the relationships between polyphenols content, fertilization and agricultural practice correlated to soil management. Effect of nitrogen and/or potassium fertilizationAs summed up by Nguyen and Niemeyer [30], the carbon/nitrogen balance (CNB) pathways can be taken into account when studying the effect of nitrogen fertilization on phenolic content. Phenylalanine is the rate-limiting precursor for phenylpropanoid synthesis (e.g., lignin, flavonoids and condensed tannins), and at the same time, it is an essential amino acid for protein synthesis. Plant growth is heavily dependent on protein synthesis for the manufacture of photosynthetic, biosynthetic and regulatory enzymes, as well as for structural protein, and phenolic synthesis Abstract The review deals with polyphenol content of vegetables and fruits under different experimental conditions. The effect of fertilizers, mainly nitrogen containing fertilizers, on qualitative and especially quantitative content of the polyphenols mixture, was reviewed. Soil nitrogen affects both anthocyanins and flavonoids content, and generally, a higher polyphenolic content is observed when less nitrogen fertilizer is added to the soil. Also the effect of different agricultural management (conventional, organic, biodynamic, integrate) is reviewed with respect to polyphenols. In this case, a major effect has pointed out in the case of vegetables, while agricultural practice affects in a minimal way fruits polyphenols content. The effect of different management is, however, hardly pointed out, since many environmental factors are involved and affect polyphenols biosynthetic pathway.

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Section: Effect Of Managementmentioning

confidence: 87%

Plant polyphenol content, soil fertilization and agricultural management: a review

Heimler

Romani

Ieri

2017

Eur Food Res Technol

132

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“…Valverde et al, 2015 [122] Total phenolic and flavonoid contents in broccoli were similar between organic and conventional systems.…”

Section: Citation Major Conclusionmentioning

confidence: 91%

Organic versus Conventional Cropping Sustainability: A Comparative System Analysis

Fess

Benedito

2018

Sustainability

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Abstract:We are at a pivotal time in human history, as the agricultural sector undergoes consolidation coupled with increasing energy costs in the context of declining resource availability. Although organic systems are often thought of as more sustainable than conventional operations, the lack of concise and widely accepted means to measure sustainability makes coming to an agreement on this issue quite challenging. However, an accurate assessment of sustainability can be reached by dissecting the scientific underpinnings of opposing production practices and crop output between cropping systems. The purpose of this review is to provide an in-depth and comprehensive evaluation of modern global production practices and economics of organic cropping systems, as well as assess the sustainability of organic production practices through the clarification of information and analysis of recent research. Additionally, this review addresses areas where improvements can be made to help meet the needs of future organic producers, including organic-focused breeding programs and necessity of coming to a unified global stance on plant breeding technologies. By identifying management strategies that utilize practices with long-term environmental and resource efficiencies, a concerted global effort could guide the adoption of organic agriculture as a sustainable food production system.

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“…In the second year, it was, on average, more than 3 times higher than in the first year. Valverde et al (2015), too, had noted that the differences in total phenolic content between successive years of study were almost fourfold. According to Vallejo et al (2003) and Gliszczyńska-Świgło et al (2007), the phenolic content depends on the weather conditions during the vegetation period.…”

Section: Resultsmentioning

confidence: 99%

“…In the research by Starzyńska et al (2003), when broccoli heads were stored at 5°C there was a significant increase in the concentration of phenolic compounds after 7 and 10 days, both in the heads packed in commercial polymeric film and in non-packed heads. The factors considerably affecting both the phenolic and flavonoid contents were: controlled atmosphere of storage (1-2°C, 85-90% RH, 10% O 2 and 5% CO 2 ) (FernandezLeón et al 2013), cultivation conditions -organic or conventional (Valverde et al 2015), and fertilization (Vallejo et al 2003). According to some authors, application of biostimulants leads to an increase in the levels of phenolic compounds in the edible plant parts (Lola-Luz et al 2013, Ertani et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Influence of biostimulants on phenolic content in broccoli heads directly after harvest and after storage

Kałużewicz

Gąsecka

Spiżewski

2017

Folia Horticulturae

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Biostimulants are commonly used in horticulture, primarily to increase yield quantity and quality, as well as plant tolerance to stress. The purpose of the study was to determine the effect of amino acid-based biostimulants and amino acids in combination with Ascophyllum nodosum filtrate, applied during the growing season on the phenolic content in broccoli heads both after harvest and after long storage in a cold store. The seedlings were planted in mid-July, and heads were harvested from September to October in each year of the study. Ascophyllum nodosum filtrate at a concentration of 1% was used during seedling production. The plants were watered with biostimulants twice, in the fourth and fifth week after sowing. They were also sprayed with amino acid-based biostimulants (1.5 dm 3 ha -1) three times, i.e. after the second, fourth and sixth week after planting. The biostimulants were not used in the control treatment. After harvest, the heads were stored for three weeks in a cold store at 1-2°C and 95% RH. Chemical analyses of total phenolic, caffeic, ferulic and sinapic acids, and of quercetin and kaempferol were carried out on samples of fresh broccoli and after the first, second and third week of storage. It was found that the application of biostimulants resulted in a significant increase in the total phenolic content, sinapic acid content, as well as quercetin content. Both in the control treatment and in the plants treated with the biostimulants, the concentration of all the tested phenolic compounds increased with the duration of storage.Ke y wor d s: amino acids, Ascophyllum nodosum filtrate, Brassica oleracea var. italica, kaempferol, phenolic acids, quercetin

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Variation in bioactive content in broccoli (Brassica oleraceavar.italica) grown under conventional and organic production systems

Abstract: Organic cultivation practices resulted in significantly higher levels of glucobrassicin and neoglucobrassicin in broccoli florets; however, other investigated compounds were unaffected by production practices.

Cited by 30 publications

References 33 publications

Plant polyphenol content, soil fertilization and agricultural management: a review

Plant polyphenol content, soil fertilization and agricultural management: a review

Organic versus Conventional Cropping Sustainability: A Comparative System Analysis

Influence of biostimulants on phenolic content in broccoli heads directly after harvest and after storage

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