Pre-harvest sprays of hexanal formulation for extending retention and shelf-life of mango ( Mangifera indica L.) fruits

Anusuya, P.; Nagaraj, R.; Janavi, Gnanaguru Janaki; Subramanian, K. S.; Paliyath, Gopinadhan; Subramanian, Jayasankar

doi:10.1016/j.scienta.2016.08.020

Cited by 49 publications

(47 citation statements)

References 22 publications

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“…Physiologically, an increase in respiration rate leads to a quick utilization of substrates, such as free sugars that contributes to post-harvest losses as previously reported by [16]. Similar findings of extended shelf-life have been reported in other banana varieties such as 'Grand naine' [6,7] and in other fruits including mangoes [17], papaya [18], Lime [19] and tomatoes [20]. The observed reduced rate of ethylene evolution in the treated fruits may be as a result of hexanal being a weak inhibitor of ethylene as previously reported by Tiwari and Paliyath,[21].…”

Section: Discussionsupporting

confidence: 78%

Effect of Hexanal as a Post-harvest Treatment to Extend the Shelf-life of Banana Fruits (Musa acuminata var. Sweet Banana) in Kenya

Yumbya

Hutchinson

Ambuko

et al. 2019

IJPSS

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The short shelf-life of fruits in the tropics continues to be a pressing problem for farmers and other value chain actors. Hexanal is a naturally occurring compound that has received attention as a novel postharvest compound preservative. This study was conducted to determine the effect of hexanal on enhancing the postharvest shelf-life and quality of ‘sweet banana’ fruits. Two hexanal concentrations (2% and 3%) were applied as either a pre-harvest spray or a post-harvest dip. Fruits were obtained from two different agro ecological zones of Kenya (AEZs II and IV). The treated fruits were kept under ambient room conditions of 25 ± 1°C and RH 60 ± 5% to ripen. Hexanal treatment maintained the fruits quality and prolonged the shelf-life by 6 days in the dipped fruits, 6 and 3 days in the sprayed fruits from the drier AEZ IV and colder AEZ II respectively compared to the untreated controls. Hexanal treatments significantly (P = .05) delayed or reduced the rate of most of the physicochemical parameters analysed irrespective of the concentration and mode of application used. Fruit firmness was significantly (P = .05) maintained up to day 6 and 9 of storage in the treated fruits compared to the controls which softened drastically as from day 3 and 6 in the sprayed and dipped fruits respectively. Hexanal treatment delayed ethylene and respiratory peaks by 3 days in both modes of application and significantly delayed progression of other ripening related changes such as 0Brix, titratable acidity, simple sugars and vitamin C. Sensory evaluation showed no significant differences in the various quality attributes analysed between the hexanal treated and control fruits. The results of this study indicate that, use of hexanal is a potential technology that could be adopted by banana farmers to enhance post-harvest shelf-life without compromising on quality.

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Section: Discussionsupporting

confidence: 78%

Effect of Hexanal as a Post-harvest Treatment to Extend the Shelf-life of Banana Fruits (Musa acuminata var. Sweet Banana) in Kenya

Yumbya

Hutchinson

Ambuko

et al. 2019

IJPSS

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“…The ability of hexanal-based formulations to inhibit PLD activity, reduce membrane degradation, and enhance postharvest shelf life has been demonstrated for both climacteric and non-climacteric fruit (Paliyath et al 2003;Paliyath and Subramanian 2008). Hexanal-based formulations have been used successfully as preharvest sprays to increase postharvest quality of sweet cherry (Sharma et al 2010), strawberry (El Kayal et al 2017b), nectarine (Kumar et al 2018), tomato (Cheema et al 2014), guava (Gill et al 2016), and mango (Anusuya et al 2016). These studies were in a wide range of geographic locations, examined a variety of fruit species, and demonstrate the potential of hexanal to enhance postharvest quality and shelf life for many economically important fruit species.…”

Section: Effect Of Hexanal On Shelf Lifementioning

confidence: 99%

“…Both EFF-and control-treated haskap plants dropped fruit at similar rates. In mango, a preharvest spray of EFF significantly enhanced the retention of fruit due to inhibition of RNA and protein synthesis in the abscission zone, thereby delaying the onset of abscission and extending the retention of fruit in trees (Anusuya et al 2016). An EFF treatment was also shown to enhance fruit retention of raspberry by strengthening the attachment of the berry to the receptacle through the increased presence of rigid epidermal hairs (El Kayal et al 2017a).…”

Section: Fruit Retentionmentioning

confidence: 99%

“…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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“…However, plant volatiles are currently gaining global interest due to their volatility, safety, eco‐friendly and antimicrobial properties, and they have been classified on the GRAS (Generally Regarded as Safe) list as food additives by the USFDA (Abbaszadeh, Sharifzadeh, Shokri, Khosravi, & Abbaszadeh, ; Wuryatmo, Able, Ford, & Scott, ; Zhou, Tao, & Jia, ). Reports have established the efficiency of various plant volatiles in mangoes (Anusuya et al., ), guava (Gill, Dhaliwal, Mahajan, Paliyath, & Boora, ) and citrus (Fan, Tao, Jia, & He, ; Tao, Jia, & Zhou, ; Tao, OuYang, & Jia, ; Wuryatmo et al., ) for the reduction in postharvest incidences, prolonged shelf life and improvement of fruit quality. Therefore, this investigation involves three objectives, namely [i] to investigate the antifungal activities of the selected natural plant volatiles against L. theobromae in avocado cultivars in vitro primarily on the radial mycelial growth and spore germination, [ii] to observe the impact of selected promising volatile citral in artificially infected healthy fruit in vivo on the incidence of stem‐end rot at two retail shelf conditions of 6 days 20°C and 14 days at 10°C and [iii] to determine the eliciting effect of citral on the defence‐related enzymes in preventatively treated fruit.…”

Section: Introductionmentioning

confidence: 99%

Natural plant volatiles as an alternative approach to control stem‐end rot in avocado cultivars

Obianom

Sivakumar

2017

Journal of Phytopathology

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Stem-end rot is a postharvest disease associated with multiple important fungal pathogens including Lasiodiplodia theobromae. The incidence of stem-end rot in avocado during postharvest storage affects the shelf life, quality and marketability of the fruit.This study is aimed at the investigation of the antifungal activities of selected natural plant volatiles (vapour phase): citral, octanal, hexanal and thymol against L. theobromae (causal pathogen of stem-end rot) in vitro and in vivo in "Hass" and "Fuerte" avocados.Hexanal showed a lower inhibitory effect on the radial mycelial growth of L. theobromae in vitro. However, citral at a minimum concentration of 4 μl/L revealed fungicidal activity and completely inhibited the spore germination of L. theobromae. Artificially inoculated "Hass" and "Fuerte" avocados with L. theobromae were exposed to citral (768 μl) and commercial fungicide prochloraz and stored for 6 days at 20°C and 14 days at 10°C separately and thereafter held at 20°C for 3 days to simulate the retail shelf conditions. Although citral in a volatile phase effectively reduced the development of stem-end rot in both cultivars, its effect was significant in "Fuerte" with 75% reduction in the incidence of stem-end rot. The biochemical analysis demonstrated an increase in total phenol contents, phenylalanine ammonia-lyase, chitinase and β-1, 3 glucanase activity in fruit exposed to citral when compared to the reference treatment prochloraz and the untreated control for both cultivars. Furthermore, fruits exposed to citral retained the ready-to-eat firmness and therefore could be considered a potential alternative treatment to control stem-end rot at the postharvest stage. K E Y W O R D Schitinase, citral, Lasiodiplodia theobromae, phenols, phenylalanine ammonia-lyase | INTRODUCTIONAvocado (Persea americana Mill.) is predominantly recognized as a rich source of monounsaturated fatty acids and other important vitamins, which are beneficial to human health and nutrition (Donetti & Terry, 2014;Dreher & Davenport, 2013;Ferreyra et al., 2016). Avocado has been reported to possess a reasonable number of phenolic compounds that play an important role in the defence mechanisms of the fruit against potential pathogenic fungi. The phenolic content in avocado contributes to about 60 mg and 40 mg gallic acid equivalents for each 30 g and one-half fruit, respectively (Dreher & Davenport, 2013).Globally, the increase in postharvest losses is attributed to the fruit susceptibility to several fungal attacks, which impacts on the shelf life and commercial value of the fruit during the supply chain (Sivakumar & Bautista-Banos, 2014;Suvama, Hemalatha, Reddy, & Reddy, 2015). | MATERIAL AND METHODS | Isolation of the pathogenL. theobromae was isolated from symptomatic avocado ("Hass" and "Fuerte") fruits and maintained on a potato dextrose agar (PDA) at 30°C for 7 days. The spore suspension was obtained from a viable 7-day-old culture by adding sterile distilled water and adjusting the suspension with a haemocytomet...

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Pre-harvest sprays of hexanal formulation for extending retention and shelf-life of mango ( Mangifera indica L.) fruits

Cited by 49 publications

References 22 publications

Effect of Hexanal as a Post-harvest Treatment to Extend the Shelf-life of Banana Fruits (Musa acuminata var. Sweet Banana) in Kenya

Effect of Hexanal as a Post-harvest Treatment to Extend the Shelf-life of Banana Fruits (Musa acuminata var. Sweet Banana) in Kenya

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

Natural plant volatiles as an alternative approach to control stem‐end rot in avocado cultivars

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