Bioactive compounds and antioxidant activities during fruit ripening of watermelon cultivars

Tlili, Imen; Hdider, Chafik; Lenucci, Marcello Salvatore; Ilahy, Riadh; Jebari, Hager; Dalessandro, Giuseppe

doi:10.1016/j.jfca.2011.03.016

Cited by 86 publications

(79 citation statements)

References 34 publications

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“…Trans -lycopene increased less than two-fold (50.540 μg g -1 fw) by the next (red-ripe) stage. These results confirm our earlier studies, in which lycopene content of the same cultivar ranged between 0 and 47.1 μg g -1 fw from the white to the red-ripe stages of ripening [40]. In addition, the amount of lycopene measured at the red-ripe stage concurs and falls within the range (35–112 μg g -1 fw) reported for ripe red-fleshed commercial cultivars by Perkins-Veazie et al [41,42].…”

Section: Resultssupporting

confidence: 92%

Comparative genomics reveals candidate carotenoid pathway regulators of ripening watermelon fruit

et al. 2013

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BackgroundMany fruits, including watermelon, are proficient in carotenoid accumulation during ripening. While most genes encoding steps in the carotenoid biosynthetic pathway have been cloned, few transcriptional regulators of these genes have been defined to date. Here we describe the identification of a set of putative carotenoid-related transcription factors resulting from fresh watermelon carotenoid and transcriptome analysis during fruit development and ripening. Our goal is to both clarify the expression profiles of carotenoid pathway genes and to identify candidate regulators and molecular targets for crop improvement.ResultsTotal carotenoids progressively increased during fruit ripening up to ~55 μg g-1 fw in red-ripe fruits. Trans-lycopene was the carotenoid that contributed most to this increase. Many of the genes related to carotenoid metabolism displayed changing expression levels during fruit ripening generating a metabolic flux toward carotenoid synthesis. Constitutive low expression of lycopene cyclase genes resulted in lycopene accumulation. RNA-seq expression profiling of watermelon fruit development yielded a set of transcription factors whose expression was correlated with ripening and carotenoid accumulation. Nineteen putative transcription factor genes from watermelon and homologous to tomato carotenoid-associated genes were identified. Among these, six were differentially expressed in the flesh of both species during fruit development and ripening.ConclusionsTaken together the data suggest that, while the regulation of a common set of metabolic genes likely influences carotenoid synthesis and accumulation in watermelon and tomato fruits during development and ripening, specific and limiting regulators may differ between climacteric and non-climacteric fruits, possibly related to their differential susceptibility to and use of ethylene during ripening.

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Section: Resultssupporting

confidence: 92%

Comparative genomics reveals candidate carotenoid pathway regulators of ripening watermelon fruit

et al. 2013

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“…3A). Similar genotype-dependent variability in total vitamin C content during ripening has been reported in tomato and watermelon (Ilahy, Hdider, Lenucci, Tlili, & Dalessandro, 2011; Tlili, Hdider, Lenucci, Ilahy, & Jebari, 2011). It has been postulated that these differences might exist due to either genetic variation or comparison of non-uniform or asynchronous stages of ripening (Alós et al, 2013).…”

Section: Resultssupporting

confidence: 78%

“…It has been postulated that these differences might exist due to either genetic variation or comparison of non-uniform or asynchronous stages of ripening (Alós et al, 2013). Similarly, other factors, such as environment, cultural practices and spontaneous mutations, also contribute to variability in vitamin C content at different stages of ripening (Ilahy et al, 2011; Tlili et al, 2011). …”

Section: Resultsmentioning

confidence: 99%

Vitamin C and reducing sugars in the world collection of Capsicum baccatum L. genotypes

et al. 2016

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This study aimed to analyze 123 genotypes of Capsicum baccatum L. originating from 22 countries, at two stages of fruit development, for vitamin C content and its relationship with reducing sugars in fruit pericarp. Among the parametric population, vitamin C and reducing sugar concentrations ranged between 2.54 to 50.44 and 41–700 mg g−1 DW of pericarp, respectively. Overall, 14 genotypes accumulated 50–500% of the RDA of vitamin C in each 2 g of fruit pericarp on a dry weight basis. Compared with ripened fruits, matured (unripened) fruits contained higher vitamin C and lower reducing sugars. About 44% variation in the vitamin C content could be ascribed to levels of reducing sugars. For the first time, this study provides comprehensive data on vitamin C in the world collection of C. baccatum genotypes that could serve as a key resource for food research in future.

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“…Strong correlation suggests that phenolic components of the chokeberry juices contributed signifi cantly to the antioxidant activity, in particular fl avonoids and nonfl avonoids (Table 4). Authors have studied the correlation between bioactive compounds and antioxidant capacity in various fruits [Tlili et al, 2011]. In data presented by other authors [Wu et al, 2004;Jakobek et al, 2007], TPC of various small fruits correlates better with the antioxidant activity than TA does.…”

Section: The Total Antioxidant Capacity and Reducing Powermentioning

confidence: 99%

Effects of Weather Conditions on Phenolic Content and Antioxidant Capacity in Juice of Chokeberries (Aronia melanocarpa L.)

Tolić

Krbavčić

Vujević

et al. 2017

Pol. J. Food Nutr. Sci.

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Chokeberries are a subject of numerous studies due to a high phenolic compound content, antioxidant properties and potential positive infl uence on the health. Effects of weather conditions on fruit quality attributes, phenolic compounds and antioxidant capacity of chokeberry (Aronia melanocarpa) juice over three consecutive years were investigated. Total phenolic content and total fl avonoids range were from 8834 to 11093 mg/L and from 6993 to 9710 mg/L, respectively. High variations and discrepancy during different growing seasons are due to the different air temperature, sunlight and rainfall rate. The highest concentrations of anthocyanins and phenolics were observed in fruits harvested in 2012, which is most likely due to the favorable weather conditions (temperature and bright sunshine hours). All chokeberry juices possess high antioxidant activity (12.9-14.6 mmol/L; 128-167 mmol/L). Strong correlation implies that fl avonoids and non-fl avonoids were the major contributors to the antioxidant capacity. This study indicates that although the examined properties vary considerably through the growing seasons (p0.05), chokeberry juices can serve as a good source of bioactive phytochemicals in a human diet.

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Bioactive compounds and antioxidant activities during fruit ripening of watermelon cultivars

Cited by 86 publications

References 34 publications

Comparative genomics reveals candidate carotenoid pathway regulators of ripening watermelon fruit

Comparative genomics reveals candidate carotenoid pathway regulators of ripening watermelon fruit

Vitamin C and reducing sugars in the world collection of Capsicum baccatum L. genotypes

Effects of Weather Conditions on Phenolic Content and Antioxidant Capacity in Juice of Chokeberries (Aronia melanocarpa L.)

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