Effect of Pre-harvest Application of Hexanal and Growth Regulators in Enhancing Shelf Life and Regulation of Membrane Associated Genes in Strawberry

Kayal, Walid El; El‐Sharkawy, Islam; Dowling, C.; Paliyath, Gopinadhan; Sullivan, J. Alan; Subramanian, Jayasankar

doi:10.1139/cjps-2016-0351

Cited by 13 publications

(8 citation statements)

References 41 publications

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“…There has been increasing interest into extending the longevity of horticultural produce through the inhibition of PLD, an enzyme involved in fruit deterioration (Paliyath and Subramanian 2008;Sharma et al 2010;Cheema et al 2014;Gill et al 2016;El Kayal et al 2017a, 2017bKumar et al 2018). Phospholipase D activity is strongly inhibited by hexanal, a naturally occurring, volatile C 6 aldehyde (Paliyath et al 1999;Paliyath et al 2003; Tiwari and Paliyath 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Hexanal is the active ingredient of the "Enhanced Freshness Formulation" (EFF; Paliyath et al 2003;Paliyath and Murr 2007) that is used to inhibit the catabolic reactions that are controlled by PLD. Preharvest spray application of EFF can extend the shelf life of several commercially important fruit crops such as nectarine (Kumar et al 2018), tomato (Cheema et al 2014), guava (Gill et al 2016), sweet cherry (Sharma et al 2010), and strawberry (El Kayal et al 2017b) through the inhibition of PLD. In addition to enhancing shelf life, preharvest sprays of EFF were shown to increase fruit retention of mango (Anusuya et al 2016) and raspberry (El Kayal et al 2017a).…”

Section: Introductionmentioning

confidence: 99%

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Performance of five haskap (Lonicera caerulea L.) cultivars and the effect of hexanal on postharvest quality

et al. 2018

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Growers are challenged to provide premium, ripe haskap fruit to market while limiting the negative attributes associated with over-ripening. Hexanal is an inhibitor of phospholipase D, an enzyme involved in membrane degradation, and has shown promise in extending the longevity of fruit. This study investigated the performance of a hexanal-based preharvest spray for enhancing the quality and shelf life of haskap fruit, an emerging crop in Canada. At two locations in 2015, 2016, and 2017, five cultivars were sprayed with a control treatment or a 0.02% hexanal formulation at 2-3 wk before harvest. Fruit was stored at 4°C and assessed for quality at successive times. Although inconsistent, results suggest a hexanal spray may impart a small benefit to the postharvest quality of haskap fruit. Secondary objectives included describing important agronomic characteristics of haskap and assessing the potential of a hexanal preharvest spray for enhancing fruit retention. Hexanal did not reduce fruit drop and had no effect on quality at harvest. Fruit contained high levels of soluble solids and titratable acids, were very dark in colour, and did not degrade in quality as rapidly as softer fruit crops such as strawberry or raspberry.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance of five haskap (Lonicera caerulea L.) cultivars and the effect of hexanal on postharvest quality

et al. 2018

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“…Hexanal is categorized under generally recognized as safe and approved as a food additive by the U.S. food and drug administration, moreover, it is commercially available (Thavong et al, 2011). Hexanal formulations have been used as a preharvest spray (Anusuya et al, 2016;El-Kayal et al, 2017a;Kumar et al, 2018;Sharma et al, 2010), postharvest dip (El Kayal et al, 2017b;Jincy et al, 2017) and vapor (Sholberg and Randall, 2007) to extend shelf life of tropical and temperate fruits. Among the modes of delivery hexanal vapor treatment is a very simple, economically feasible and socially practicable method to extend the shelf life of fruits.…”

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confidence: 99%

Hexanal Vapor Induced Resistance against Major Postharvest Pathogens of Banana (Musa acuminata L.)

et al. 2020

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Hexanal, a C-6 aldehyde has been implicated to have antimicrobial properties. Hence, this study was conducted to determine the antifungal activities of hexanal vapor against major postharvest pathogens of banana viz., Colletotrichum gloeosporioides and Lasiodiplodia theobromae. The pathogens were cultured in vitro and exposed to hexanal vapor at 600, 800, 1,000 and 1,200 ppm. Mycelial growth of both fungal pathogens were inhibited completely at 800 ppm and the incidence of anthracnose and stem-end rot diseases reduced by 75.2% and 80.2%, respectively. The activities of peroxidase, polyphenol oxidase, phenylalanine ammonia-lyase and glucanase had transiently increased in hexanal vapor treated banana by 5 to 7 days and declined thereafter. Postharvest treatment of banana with hexanal vapor resulted in phospholipase D inhibition and also resulted in cell wall thickening of the treated fruit, which impeded the penetration of the pathogenic spores. This was further confirmed by scanning electron micrographs. The defense-related protein intermediaries had increased in hexanal vapor treated banana fruit, which suggests induced resistance against C. gloeosporioides and L. theobromae, via., the phenylpropanoid pathway which plays a significant role in hindering the pathogen quiescence. Delayed ripening due to inhibition of phospholipase D enzyme, inhibition of mycelial growth and induced systemic resistance by defense enzymes collectively contributed to the postharvest disease reduction and extended shelf life of fruit.

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“…Retaining fruits would be valuable to farmers as it can help them to extend the season, thereby stabilizing the price. Earlier studies have demonstrated that hexanal reduced fruit drop in mango, strawberry, raspberry, and nectarines [29][30][31][32]. It is hypothesized that the increased retention of fruits on the orange trees due to hexanal is associated with the delay in abscission [29].…”

Section: Discussionmentioning

confidence: 99%

“…It is not clear how hexanal prevents abscission in mature fruits. El Kayal et al [31] reported that hexanal reduced the activities of phospholipase D (PLD) and abscisic acid (ABA) regulating genes in strawberry. Although we have not analysed these genes in oranges, it is quite possible that fruit retention in orange is also facilitated by the reduced levels of PLD and ABA, as reported previously [29,32].…”

Section: Discussionmentioning

confidence: 99%

Pre-harvest field application of enhanced freshness formulation reduces yield loss in orange

Samwel

Msogoya

Kudra

et al. 2020

Chem. Biol. Technol. Agric.

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Background Orange (Citrus sinensis L.) production in Tanzania is constrained by several pre-harvest factors that include pests. Hexanal, sprayed as Enhanced Freshness Formulation (EFF) is a relatively new technology that has been reported to reduce pre-harvest loss in fruits. However, the effects of hexanal on pre-harvest yield loss of orange are not known. We studied the effects of hexanal as EFF on yield losses of three sweet orange cultivars namely, Early Valencia, Jaffa, and Late Valencia. Factorial experiments tested the effects of EFF concentration, variety, and time of EFF application on number of dropped fruit, percentage of non-marketable fruit and incidence of pest damage. Results Results showed significant negative correlation (p < 0.001) between EFF and the percentage of dropped fruit, non-marketable yield, and incidence of pest damage. An increase in hexanal concentration by 1%, is expected to reduce number of dropped fruit by 50, percentage of non-marketable by 35.6, and incidences of pest damage by 36.5% keeping other factors constant. Results also show significant association (p < 0.001) between time of hexanal application and non-marketable yield. Percentage of dropped fruit is expected to increase by 1 for each day away from harvest, keeping other factors constant. Conclusion Pre-harvest application of hexanal as EFF can significantly reduce number of dropped fruits, percentage of non-marketable fruit and incidence of pest damage.

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Effect of Pre-harvest Application of Hexanal and Growth Regulators in Enhancing Shelf Life and Regulation of Membrane Associated Genes in Strawberry

Cited by 13 publications

References 41 publications

Performance of five haskap (Lonicera caerulea L.) cultivars and the effect of hexanal on postharvest quality

Performance of five haskap (Lonicera caerulea L.) cultivars and the effect of hexanal on postharvest quality

Hexanal Vapor Induced Resistance against Major Postharvest Pathogens of Banana (Musa acuminata L.)

Pre-harvest field application of enhanced freshness formulation reduces yield loss in orange

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