Development of an Objective and Non-Destructive Harvest Maturity Index for Peaches and Nectarines

Luchsinger, L.; Walsh, C.S.

doi:10.17660/actahortic.1998.465.85

Cited by 12 publications

(10 citation statements)

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“…This indicates that in apricot the cover colour extension percentage is highly correlated to fruit ripening stages. Up to now, studies have regarded the possibility of using the skin ground colour as harvesting index for stone fruits (Delwiche and Baumgardner, 1985;Basile et al, 2005;Luchsinger et al, 1998), but there are not evidences for the use of the cover colour as an index for apricots. Therefore, to the best of our knowledge, this is the first evidence which indicates the possibility of using the skin cover colour, which is very easy to estimate also visually, as a main ripening index for apricot varieties that have a progressive appearance of red cover colour on fruits during ripening, such as the traditional apricot cultivars.…”

Section: Figmentioning

confidence: 99%

Bioactive compounds and fruit quality traits of Vesuvian apricot cultivars (Prunus armeniaca L.) and use of skin cover colour as a harvesting index

Vaio¹,

Cirillo²,

Pannico³

et al. 2019

Aust J Crop Sci

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The qualitative/nutritional characteristics of apricots mainly depend on cultivar, cultivation area and ripening stage. Thus, it is important to characterise different cultivars and harvest fruits at the optimum time. There is no conclusive evidence about harvesting indexes in apricot for decision making about the best harvesting time. Moreover, little is known about fruit qualitative/nutritional characteristics of autochthonous cultivars of the Campania region (Italy), mainly grown in the area of Vesuvius volcano. Therefore, fruit attributes of the Vesuvian cultivars Ceccona, Vitillo, and Pellecchiella were evaluated during ripening with the aim of characterizing the qualitative/nutritional value of the fruit and specifying a reliable harvesting index. Cultivar, picking time and skin cover colour affected all the fruit qualitative/nutritional attributes considered. For the first time, a number of minor phenolic compounds were quantified in apricot. Ceccona was the richest in phenolic compounds, while Pellecchiella had the highest trolox equivalent antioxidant capacity (TEAC). During ripening, the TEAC decreased on a per-gram basis and increased on a per-fruit-basis. Cultivar, picking time and skin cover colour had a great influence in determining the qualitative/nutritional value of the apricots, and overall Pellecchiella showed the best characteristics. The skin cover colour percentage may be a suitable harvesting index for the traditional Vesuvian apricot cultivars. A comprehensive description of the phenolic compounds and a dilution effect on apricot fruit TEAC is reported for the first time.

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Section: Figmentioning

confidence: 99%

Bioactive compounds and fruit quality traits of Vesuvian apricot cultivars (Prunus armeniaca L.) and use of skin cover colour as a harvesting index

Vaio¹,

Cirillo²,

Pannico³

et al. 2019

Aust J Crop Sci

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“…In many fruits, colour change during ripening occurs due to chlorophyll degradation and the increase in the concentration of pigments such as carotenoids or polyphenols [ 95 ]. Several fruits have been studied for the relationship between maturity and colour including tomatoes [ 96 ], oranges [ 95 ], guavas [ 97 ], peaches [ 98 ], nectarines [ 44 ], mangos [ 46 , 99 ], blueberries [ 100 ], cherries [ 100 ] and pineapples [ 89 ]. To measure the changes in fruit colour, the two major methods are the use of colorimeters, and image capture and analysis.…”

Section: Colour Measurementmentioning

confidence: 99%

Advances in Non-Destructive Early Assessment of Fruit Ripeness towards Defining Optimal Time of Harvest and Yield Prediction—A Review

Lecourt

Bishop

2018

Plants

139

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Global food security for the increasing world population not only requires increased sustainable production of food but a significant reduction in pre- and post-harvest waste. The timing of when a fruit is harvested is critical for reducing waste along the supply chain and increasing fruit quality for consumers. The early in-field assessment of fruit ripeness and prediction of the harvest date and yield by non-destructive technologies have the potential to revolutionize farming practices and enable the consumer to eat the tastiest and freshest fruit possible. A variety of non-destructive techniques have been applied to estimate the ripeness or maturity but not all of them are applicable for in situ (field or glasshouse) assessment. This review focuses on the non-destructive methods which are promising for, or have already been applied to, the pre-harvest in-field measurements including colorimetry, visible imaging, spectroscopy and spectroscopic imaging. Machine learning and regression models used in assessing ripeness are also discussed.

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“…Byrne et al [11], Luchsinger and Walsh [12] and Nunes [5] observed that the value of a* of the skin background colour is related to maturity in Prunus persica L. Batsch (i.e., nectarine and peach). Robertson et al [13] and Ferrer et al [14] highlighted relationships between skin h • and maturity in 'Cresthaven' and 'Calanda' peach cultivars, respectively.…”

Section: Introductionmentioning

confidence: 99%

Reliability of a Handheld Bluetooth Colourimeter and Its Application to Measuring the Effects of Time from Harvest, Row Orientation and Training System on Nectarine Skin Colour

et al. 2021

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This work aimed to (i) determine the reliability of a portable Bluetooth colourimeter for fruit colour measurements; (ii) characterise the changes in quantitative skin colour attributes in a nectarine cultivar in response to time from harvest; and (iii) determine the influence of row orientation and training system on nectarine skin colour. The skin colour attributes measured with the colourimeter, namely L*, a* and b*, were calibrated and validated against a reference spectrophotometer. C* and h° were obtained from a* and b*. Skin colour was measured in situ from 42 days before to 6 days after harvest on ‘Majestic Pearl’ nectarines subjected to different row orientations and training systems. Validation models showed high reliability of colour estimations. The trends of colour attributes over time were characterised by cubic regression models, with h° proving to be the best parameter to describe changes of colour over time, with a clear link to the maturation process. No significant effects of row orientation and training system on skin colour were observed at harvest. Overall, the device proved reliable for fruit colour detection. Results of this study highlight the potential of h° as a quantitative index to monitor ripening prior to harvest in ‘Majestic Pearl’ nectarines.

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Development of an Objective and Non-Destructive Harvest Maturity Index for Peaches and Nectarines

Cited by 12 publications

References 0 publications

Bioactive compounds and fruit quality traits of Vesuvian apricot cultivars (Prunus armeniaca L.) and use of skin cover colour as a harvesting index

Bioactive compounds and fruit quality traits of Vesuvian apricot cultivars (Prunus armeniaca L.) and use of skin cover colour as a harvesting index

Advances in Non-Destructive Early Assessment of Fruit Ripeness towards Defining Optimal Time of Harvest and Yield Prediction—A Review

Reliability of a Handheld Bluetooth Colourimeter and Its Application to Measuring the Effects of Time from Harvest, Row Orientation and Training System on Nectarine Skin Colour

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