Seasonal Effects on Bioactive Compounds and Antioxidant Capacity of Six Economically Important Brassica Vegetables

Aires, Alfredo; Fernandes, Conceição; Carvalho, Rosa; Bennett, Richard N.; Saavedra, María José; Rosa, Eduardo

doi:10.3390/molecules16086816

Cited by 100 publications

(84 citation statements)

References 45 publications

(49 reference statements)

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“…A similar increase in glucosinolates, total phenol, and total flavonoid in the spring has been reported (Aires et al, 2011;Bhandari and Kwak, 2014). Among the cultivars tested, 'AMaGi' showed the lowest contents of sugars in both the spring (151.6 mg･g -1 DW) and the fall (111.4 mg･g -1 DW), whereas 'Grandeur' showed the highest total contents of sugars in both the spring (228.8 mg･g -1 DW) and the fall (220.7 mg･g -1 DW).…”

Section: Resultssupporting

confidence: 55%

Seasonal Variation in Contents of Sugars in Different Parts of Broccoli

Bhandari¹,

Kwak²

2015

HST

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Seasonal variation in the contents of sugars (fructose, glucose, and sucrose) in the floret, leaf, and stem of broccoli were studied in ten commercial broccoli cultivars. Plants were grown in the spring and fall seasons in 2011. In both seasons, glucose was the major constituent, comprising about 50% of the total sugar content in the floret and leaf tissue of most cultivars, whereas the broccoli stem showed an unusual pattern of accumulation. Sucrose exhibited greater cultivar dependency as well as seasonal variation compared to fructose and glucose in floret and leaf tissues. The floret tissue had a higher total content of sugar in the spring compared to the fall due to an increase in glucose and fructose. However, most of the leaf and stem tissues of broccoli had a higher total sugar content in the fall compared to the spring. Furthermore, stem and leaf tissues possessed a relatively higher total sugar content compared to floret tissue in both seasons. 'Grandeur' broccoli contained a significantly greater amount of total sugar in both floret and leaf tissues in both seasons, whereas 'YuDoRi No.1' broccoli exhibited the highest total content of sugar in stem tissue. At overall, the results showed significant influences of genotype, plant part and growing season on sugar content in broccoli.

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Section: Resultssupporting

confidence: 55%

Seasonal Variation in Contents of Sugars in Different Parts of Broccoli

Bhandari¹,

Kwak²

2015

HST

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“…As in total phenolics, harvest date affected TEAC levels in a similar way to that found by Aires and co-workers [40]. In spring of 2010, TEAC was higher than that of florets from autumn harvests (4.3 vs 3.4 mmol kg -1 ) but no effect of irrigated treatment was observed.…”

Section: Teacsupporting

confidence: 61%

“…In both years the highest values were measured in the spring treatments (Table 2), which is explicable by near abiotic stress proof environment [44]. Antioxidant activities are highly correlated with phenolic compounds [40] and glucosinolates [45] and the climatic factors are very important because they can interfere in the chemical biosynthesis and therefore affect the final concentration of bioactive compounds [11,40,46].…”

Section: Teacmentioning

confidence: 96%

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Effect of environmental conditions and water status on the bioactive compounds of broccoli

et al. 2013

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Four experiments were carried out in 2010 and 2011 to determine how cultivation period (spring or autumn), harvest season (summer or autumn), and plant water status (irrigated or rainfed) influenced content and composition of broccoli cultivar Parthenon F1 with respect to sulforaphane and phenolics under field conditions in Gödöllő, Hungary. Sulforaphane content was significantly higher in the autumn harvests, regardless of irrigation treatments. Harvest season also influenced total phenolics content, with the highest values occurring in the spring season. Harvest season also affected trolox equivalent antioxidant capacity (TEAC) and this capacity was also the greatest in spring. Caffeic acid glucoside was a major phenolics component in both spring and autumn season harvests. The season and irrigation related changes in other phenolic component contents were also characterised in this study.

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“…These differences may be related to many parameters, including the local environment and the collection periods, which contribute to the variation of the chemical components of the plant as shown in a previous study on seasonal effects on bioactive compounds (Aires et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Antiplasmodial activity of Vernonia cinerea Less (Asteraceae), a plant used in traditional medicine in Burkina Faso to treat malaria

Soma¹,

Sanon²,

GansanÃ³

et al. 2017

Afr. J. Pharm. Pharmacol.

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Research and development of new antiplasmodial molecules in plant is a very important way for the development of new anti-malarial drugs. In this study, Vernonia cinerea Less (Asteraceae) was selected for its promising antiplasmodial activity because it is traditionally used in Burkina Faso to treat malaria. The aim of this study was to investigate the antiplasmodial activity of this whole plant. Five crude extracts of V. cinerea Less were prepared from the solvents of increasing polarity (CH 2 Cl 2 , CH 3 OH, CH 3 OH/H 2 O (1/1), H 2 O and alkaloids extracts). The method of Ciulei (1982) and thin layer chromatography were used for chemical characterization. The p-LDH technique was used in vitro. Extracts were evaluated in vitro for efficacy against the Plasmodium falciparum strain K1, which is resistant to chloroquine, and 3D7, which is sensitive to chloroquine. The crude extracts of alkaloids showed the IC 50 =4.25 μg/ml with the strains 3D7 and IC 50 =2.56 µg/ml with the K1 strains. The CH 2 Cl 2 extracts showed the IC 50 = 8.42 µg/ml and IC 50 =5.85 µg/ml on strains 3D7 and K1, respectively. The CH 3 OH extracts showed the IC 50 =21.08 µg/ml, CH 3 OH/H 2 O extracts gave 41.56 µg/ml and H 2 O extracts gave 37.17 µg/ml on strains of P. falciparum K1. The present study highlighted the very promising antiplasmodial activity of V. cinerea Less. The most antiplasmodial activity of this plant extracts merit further study about its in vivo antiplasmodial activity in Plasmodium berghei infected mice.

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Seasonal Effects on Bioactive Compounds and Antioxidant Capacity of Six Economically Important Brassica Vegetables

Cited by 100 publications

References 45 publications

Seasonal Variation in Contents of Sugars in Different Parts of Broccoli

Seasonal Variation in Contents of Sugars in Different Parts of Broccoli

Effect of environmental conditions and water status on the bioactive compounds of broccoli

Antiplasmodial activity of Vernonia cinerea Less (Asteraceae), a plant used in traditional medicine in Burkina Faso to treat malaria

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