Effects of harvest time, fruit size and cultivar on the bulk optical properties of Satsuma mandarin

Sun, Chanjuan; Aernouts, Ben; Saeys, Wouter

doi:10.1016/j.postharvbio.2020.111412

Cited by 16 publications

(5 citation statements)

References 61 publications

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“…This confirms previous studies where 'Kinnow' mandarins harvested in India during the last week of December had higher ascorbic acid and total carotenoid content in the peel and juice than fruit harvested two weeks later (Thakre et al, 2015). Similarly, early maturing cultivars of satsumas ('Iwasaki', 'Okitsu', and 'Goku Wase') had higher absorption of carotenoids in the juice vesicles and advanced colour changes in the flavedo than latematuring (Sun et al, 2021).…”

Section: The Effect Of Harvest Time and Canopy Position On The Postha...supporting

confidence: 88%

“…The quality profile of citrus fruit is highly dependent on the horticultural maturity at harvest (Lado et al, 2018;Liu et al, 2021;Sun et al, 2021), and factors like fruit canopy position have been shown to affect the postharvest quality of citrus. Previous research has demonstrated the effect of these factors on the pre-and postharvest quality of different citrus cultivars like 'Kinnow' mandarins (Thakre et al, 2015), 'Nules' clementines (Cronje et al, 2011a(Cronje et al, , 2011bMagwaza et al, 2013;Ncama et al, 2018a, b), and 'Iwasaki', 'Okitsu', 'Goku Wase' satsumas (Sun et al, 2021) as well as 'Navel' and 'Valencia' oranges (Zacarıás-Garcıá et al, 2022). However, to the best of our knowledge, this is the first time that the effect of fruit canopy position on consumer acceptance of 'Nadorcott' clementines has been studied.…”

Section: The Effect Of Harvest Time and Canopy Position On The Postha...mentioning

confidence: 99%

“…However, the horticultural maturity at which citrus is harvested can vary, depending on intended use and targeted markets. Hence, fruit harvested at different times during the season will exhibit varying quality categories (Thakre et al, 2015;Rokaya et al, 2016;Sun et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Unveiling biomarkers for postharvest resilience: the role of canopy position on quality and abscisic acid dynamics of ‘Nadorcott’ clementine mandarins

Navarro-Calderón,

Magwaza,

Terry

et al. 2024

Front. Hortic.

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IntroductionClementine mandarins are categorised as non-climacteric fruit because they do not exhibit an increase in respiration rate and ethylene production during ripening. Recent studies have suggested that abscisic acid (ABA), a distinct ripening hormone, plays a pivotal role in the postharvest behaviour of this fruit. The present study aimed to identify biomarkers for enhancing the postharvest durability and flavour retention of imported ‘Nadorcott’ clementines (Citrus reticulata Blanco). To achieve this goal, an experiment was designed to investigate pre- and post-harvest factors influencing quality of clementine fruit, encompassing both physiological and biochemical aspects. Furthermore, the study investigated the role of ABA and ABA catabolites in the fruit senescence process.MethodsClementines from four different canopy positions, i.e. upper outside, upper inside, lower outside, and lower inside, were manually harvested at different horticultural maturity. The study was conducted over two harvest times, specifically in March (mid-season) and April (end of season). Harvested fruit samples were stored for six weeks in a cold room with temperature and relative humidity set at 8.5±0.5 °C and 85±2%, respectively. Various physiological (i.e. respiration rate), organoleptic (i.e. rind colour, total soluble solids, and titratable acidity) and biochemical (i.e. individual sugars and organic acids, abscisic acid and its catabolites) variables were measured bi-weekly. Sensory evaluation and consumer survey were conducted during the fourth week of storage.Results and discussionAt the end of storage, fruit located on the inside of the canopy had a significantly higher respiration rate and lower concentration of sugars than outside fruit, resulting in a shorter shelf-life. At the same time, inside fruit showed a higher concentration of ABA and ABA catabolites than outside fruit, coinciding with a lower consumer acceptance score for external appearance, aroma, and flavour. For the first time, the key biomarkers affecting resilience and flavour retention, notably the higher ABA concentration and lower sugar levels in inner canopy fruit, resulting in a shorter shelf-life and reduced consumer acceptance were unveiled. This research not only provides valuable insights for the citrus industry but also unveils the intricate relationship between fruit quality, ABA, and ABA catabolites during senescence and consumer acceptance.

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Section: The Effect Of Harvest Time and Canopy Position On The Postha...supporting

confidence: 88%

Section: The Effect Of Harvest Time and Canopy Position On The Postha...mentioning

confidence: 99%

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Unveiling biomarkers for postharvest resilience: the role of canopy position on quality and abscisic acid dynamics of ‘Nadorcott’ clementine mandarins

Navarro-Calderón,

Magwaza,

Terry

et al. 2024

Front. Hortic.

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“…Satsuma mandarin Agronomy 2023, 13, 881 2 of 11 (Citrus unshiu Marc.) is a very popular, fresh variety of citrus due to its easy peel, seedlessness, and high nutritional value [2]. The Wase Satsuma Oita 4 cultivar (C. unshiu cv.…”

Section: Introductionmentioning

confidence: 99%

Agronomic Practices Alter Regulated Effects of Easily Extractable Glomalin-Related Soil Protein on Fruit Quality and Soil Properties of Satsuma Mandarin

et al. 2023

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Easily extractable glomalin-related soil protein (EEG) released from arbuscular mycorrhizal fungi exhibits many roles in soil and plants, while it is not clear whether the biostimulator alone or in combination with agronomic practices can improve soil characteristics and fruit quality in citrus. The objective of this study was to analyze the effects of foliar sprays of EEG, singly or in combination with fruit bagging (FB), reflective film mulching (RF), and grass-proof cloth mulching (GPC) on root mycorrhizal colonization rate, fruit internal and external quality, and soil structure and fertility on an early-ripening Satsuma mandarin “Oita 4” (Citrus unshiu cv. Oita 4). Exogenous EEG application increased root mycorrhizal colonization, while agronomic practices dramatically inhibited root mycorrhizal colonization in EEG-treated trees. Foliar EEG application significantly improved the internal and external quality of fruits, but the combination of three agronomic practices with EEG did not further enlarge the improved effect on the external quality of fruit and even produced an inhibitory effect. Also, the addition of RF further amplified the improved effect of EEG on the contents of fruit vitamin C and soluble solids. EEG application also significantly elevated sucrose in the fruit pith and juice sac, fructose in the fruit peel, fruit pith, segment membrane, and juice sac, and glucose in the fruit pith, segment membrane, and juice sac. Additional RF treatment could increase sucrose in the fruit peel and juice sac as well as glucose in the fruit peel to varying degrees in EEG-treated trees. EEG application also significantly increased soil organic carbon, mean weight diameter, nitrate nitrogen, ammonium nitrogen, available phosphorus, and available potassium levels, with additional agronomic practices almost reducing the promoting effect of EEG on these soil variables. It has been summarized that a single EEG application had positive effects on fruit quality and soil fertility, while the additional agronomic practices resulted in little change or even suppressed the positive effects of EEG.

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“…Inside the samples, the chemical composition is related to its optical absorption properties, and the physical structure is related to its scattering properties. Changes in the texture and internal component contents lead to different optical responses, which would affect the performance of the model built in spectral detection [ 26 , 27 ]. In the above studies of quality detection, spectral detection models were mainly developed for samples cultivated in open fields.…”

Section: Introductionmentioning

confidence: 99%

Detection of Soluble Solids Content in Different Cultivated Fresh Jujubes Based on Variable Optimization and Model Update

Sun

Zhang

Ren

et al. 2022

Foods

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To solve the failure problem of the visible/near infrared (VIS/NIR) spectroscopy model, soluble solids content (SSC) detection for fresh jujubes cultivated in different modes was carried out based on the method of variable optimization and model update. Iteratively retained informative variables (IRIV) and successive projections algorithm (SPA) algorithms were used to extract characteristic wavelengths, and least square support vector machine (LS-SVM) was used to establish detection models. Compared with IRIV, IRIV-SPA achieved better performance. Combined with the offset properties of the wavelength, repeated wavelengths were removed, and wavelength recombination was carried out to create a new combination of variables. Using these fused wavelengths, the model was recalibrated based on the Euclidean distance between samples. The LS-SVM detection model of SSC was established using the update method of wavelength fusion-Euclidean distance. Good prediction results were achieved using the proposed model. The determination coefficient (R2), root mean square error (RMSE), and residual predictive deviation (RPD) of the test set on SSC of fresh jujubes cultivated in the open field were 0.82, 1.49%, and 2.18, respectively. The R2, RMSE, and RPD of the test set on SSC of fresh jujubes cultivated in the rain shelter were 0.81, 1.44%, and 2.17, respectively. This study realized the SSC detection of fresh jujubes with different cultivation and provided a method for the establishment of a robust VIS/NIR detection model for fruit quality, effectively addressing the industry need for identifying jujubes grown in the open field.

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Effects of harvest time, fruit size and cultivar on the bulk optical properties of Satsuma mandarin

Cited by 16 publications

References 61 publications

Unveiling biomarkers for postharvest resilience: the role of canopy position on quality and abscisic acid dynamics of ‘Nadorcott’ clementine mandarins

Unveiling biomarkers for postharvest resilience: the role of canopy position on quality and abscisic acid dynamics of ‘Nadorcott’ clementine mandarins

Agronomic Practices Alter Regulated Effects of Easily Extractable Glomalin-Related Soil Protein on Fruit Quality and Soil Properties of Satsuma Mandarin

Detection of Soluble Solids Content in Different Cultivated Fresh Jujubes Based on Variable Optimization and Model Update

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