Preharvest melatonin application alleviates red drupelet reversion, improves antioxidant potential and maintains postharvest quality of ‘Elvira’ blackberry

Shah, Hafiz Muhammad Shoaib; Singh, Zora; Hasan, Mahmood Ul; Afrifa-Yamoah, Ebenezer; Woodward, Andrew

doi:10.1016/j.postharvbio.2023.112418

Cited by 17 publications

(9 citation statements)

References 39 publications

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“…The positive effect of elicitor treatments on the accumulation of nutraceutical antioxidant compounds did not lead to significantly different IC50 values only in the case of ‘Cosmopolitan’ in 2021, although the trend is similar to the other responses to treatment. Moreover, similar beneficial effects on phenolic content and antioxidant activity were obtained with melatonin preharvest application on Merlot grape [ 45 ], sweet cherry [ 72 ] and Elvira blackberry [ 73 ]. The stimulation of phenol and anthocyanin accumulation and an increase in antioxidant activity after preharvest treatment with chitosan was also reported by He et al on strawberry [ 74 ], by Lo Piccolo (2023) on raspberries [ 75 ] and by Griñán et al on pomegranate [ 76 ].…”

Section: Discussionmentioning

confidence: 86%

Effect of Elicitor Treatments on Quality Attributes in Blueberry: Implications of Cultivar and Environmental Conditions

Cola,

Cavenago,

Gardana

et al. 2024

Plants

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Elicitors of plant defence responses can trigger defence mechanisms that are able to protect plant tissues from biotic or abiotic stresses. Since one defence response involves the activation of secondary metabolites’ biosynthesis, the purpose of this study was to evaluate the effect of chitosan and melatonin pre-harvest treatments on the quality and the nutritional parameters of the fruits of blueberry (Vaccinium corymbosum L.). Across the two years of experiment, three different cultivars (cv.s. ‘Cosmopolitan’, ‘Hortblue Poppins’ and ‘Legacy’) were treated with 1% chitosan or 100 µM melatonin every two weeks during the ripening season and ripe fruits were progressively harvested and analysed. The treatment with both elicitors had only slight effects on dry matter, soluble solids content, titratable acidity and pH, with a cultivar-dependent response. On the other hand, elicitors significantly affected the levels of phenylpropanoid and antioxidant compounds in all cvs. in both years, with a higher accumulation of total anthocyanins and phenolics and the enhancement of the antioxidant capacity, with positive effects on the nutraceutical quality of fruits. The anthocyanin profile in terms of both absolute concentrations and the relative proportion of single anthocyanins was affected by both harvest year and cv., highlighting the role of the genetic background in the plant response to environmental conditions (with particular reference to summer heat stress) and to elicitor treatments.

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Section: Discussionmentioning

confidence: 86%

Effect of Elicitor Treatments on Quality Attributes in Blueberry: Implications of Cultivar and Environmental Conditions

Cola,

Cavenago,

Gardana

et al. 2024

Plants

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“…Blackberry fruit is more prone to color modifications from black to red or pinkish pigmentation, which could be due to the oxidation of anthocyanins and phenolics in fruit. These variations may revert the color of whole fruit or individual dru-pelets, making fruit unmarketable (Shah et al, 2023). Low temperature (< 4 • C) exposure downregulates these physical quality constraints along with an extension of shelf life up to 7 days (Lawrence & Melgar, 2018).…”

Section: Physical Factorsmentioning

confidence: 99%

Trends in maintaining postharvest freshness and quality of Rubus berries

Shah,

Singh,

Kaur

et al. 2023

Comp Rev Food Sci Food Safe

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Blackberries and raspberries, commonly known as Rubus berries, are commercially grown worldwide across different climates. Rubus berries contain wide array of phytochemicals, vitamins, dietary fibers, minerals, and unsaturated fatty acids. Nevertheless, these berries have short storage life which is the major constraint in their supply chains leading to higher postharvest losses. Inappropriate harvest handling, physical bruising, insect pests, and postharvest diseases lower the acceptability of fruit among consumers and other supply chain stakeholders. Additionally, the susceptibility to microbial decay, fruit softening, higher ethylene production, respiratory activity, and increased oxidation of anthocyanins, phenolics, and flavonoids considerably affects the marketability of Rubus berries at domestic and international markets. To date, several postharvest strategies such as cold storage, precooling, modified and controlled atmospheres, anti‐ripening chemicals, edible coatings, biological agents, and nonchemical alternatives (heat treatment, ultrasound, irradiations, ozone) have been reported to prolong storage life, ensure food safety, and maintain the nutritional quality of Rubus berries. This review briefly encompasses multiple aspects including harvest maturity indices, regulation of fruit ripening, pre and postharvest factors affecting fruit quality, and an update on postharvest quality preservation by employing postharvest technologies to extend the storage life and maintaining the bioactive compounds in Rubus berries which are lacking in the literature. Accordingly, this review provides valuable information to the industry stakeholders and scientists offering relevant solutions, limitations in the application of certain technologies at commercial scale, highlighting research gaps, and paving the way forward for future investigations.

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“…Within single replication, all fruit were assessed for RDR according to the method described by Shah et al (2023b), where nal RDR (%) was calculated as;…”

Section: Determination Of Red Drupelet Reversion and Total Anthocyaninsmentioning

confidence: 99%

“…Meanwhile, anthocyanins are very unstable pigments that are susceptible to oxidation due to reactive oxygen species (ROS) and activities of oxidant enzymes (Kim et al 2019). ROS oxidises anthocyanins in blackberry fruit, which is believed to be the cause of red drupelet reversion (RDR), a condition where the black colour of an individual or group of drupelets or whole fruit modi es to pink or red, which not only affects cosmetic appearance but also causes deleterious modi cations to fruit rmness and textural properties (Edgley et al 2020;Shah et al 2023b).…”

Section: Introductionmentioning

confidence: 99%

“…The activity of polyphenol oxidase (PPO) increases at an exponential rate in RDR symptomatic blackberries, where hydrogen peroxide radicals (H 2 O 2 ) intensify anthocyanin degradation, resulting in quality deterioration and membrane disassembly due to intensi ed lipid peroxidation (Shah et al 2023c). Contrastingly, RDR and TAC degradation are negatively correlated with the activities of antioxidant enzymes and levels of non-enzymatic antioxidants during cold storage (Shah et al 2023b).…”

Section: Introductionmentioning

confidence: 99%

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Methyl jasmonate application downregulates red drupelet reversion by modulating the antioxidant potential and maintains fruit quality of ‘Elvira’ blackberries

Shah,

Singh,

Hasan

et al. 2023

Preprint

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Red drupelet reversion (RDR) shortens the marketing window for blackberries by reducing cosmetic appearance of the fruit. Blackberry plants were sprayed with methyl jasmonate (MJ 0, 1, 2 or 3 mM), two weeks before tentative harvest maturity, to evaluate effects on RDR, antioxidant capacity and fruit quality in cold stored blackberry fruit for up to 12 days. MJ significantly reduced RDR while maintaining higher anthocyanins, phenolics and flavonoids during cold storage for 12 days. Fruit treated with 1 mM MJ showed higher total antioxidants, ascorbic acid, and glutathione content. Additionally, MJ treated raspberries displayed higher activities of superoxide dismutase, catalase, ascorbate oxidase, monodehydroascorbate reductase, dehydroascorbate reductase and glutathione reductase enzymes, than controls for 12 days. In conclusion, the preharvest spray application of MJ (1 mM) has the potential to reduce RDR, improve antioxidant capacity and maintain fruit quality of cold stored blackberries.

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Preharvest melatonin application alleviates red drupelet reversion, improves antioxidant potential and maintains postharvest quality of ‘Elvira’ blackberry

Cited by 17 publications

References 39 publications

Effect of Elicitor Treatments on Quality Attributes in Blueberry: Implications of Cultivar and Environmental Conditions

Effect of Elicitor Treatments on Quality Attributes in Blueberry: Implications of Cultivar and Environmental Conditions

Trends in maintaining postharvest freshness and quality of Rubus berries

Methyl jasmonate application downregulates red drupelet reversion by modulating the antioxidant potential and maintains fruit quality of ‘Elvira’ blackberries

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