Constant temperature during postharvest storage delays fruit ripening and enhances the antioxidant capacity of mature green tomato

2020 ◽  
Vol 44 (11) ◽  
Author(s):  
Lan Chen ◽  
Yanfang Pan ◽  
Haideng Li ◽  
Ziyun Liu ◽  
Xiaoyu Jia ◽  
...  
Planta ◽  
2021 ◽  
Vol 255 (1) ◽  
Author(s):  
Yunting Zhang ◽  
Yu Long ◽  
Yiting Liu ◽  
Min Yang ◽  
Liangxin Wang ◽  
...  

2013 ◽  
Vol 36 (3) ◽  
pp. 190-197 ◽  
Author(s):  
Zheng Zhao ◽  
Gangming Xu ◽  
Zhinan Han ◽  
Qingqing Li ◽  
Yilun Chen ◽  
...  

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 988C-988
Author(s):  
Wilhelmina Kalt ◽  
Agnes M. Rimando ◽  
Michele Elliot ◽  
Charles F. Forney

Recent interest in the human health-promoting properties of fruit phenolics, and especially fruit flavonoids, has stimulated research on how these secondary metabolites may be affected by pre- and postharvest horticultural factors. Resveratrol, although a minor phenolic in many fruit, possesses potent bioactivities, and is therefore of particular interest. To study the effects of postharvest storage and UV-C irradiation on selected phenolic components and antioxidant capacity of cranberry (Vaccinium macrocarpon), fruit of cv. Pilgrim, Stevens, and Bergman, were irradiated with UV-C at levels between 0 and 2.0 KJ·m-2, followed by storage at 9 °C for 7 and 17 d. Total phenolic content did not change during storage. However, resveratrol content was higher and antioxidant capacity (ORAC) was lower at 7 days of storage compared to 17 days. There was no main effect of UV-C on total phenolics, anthocyanins, resveratrol, or ORAC. However, there was an interaction between storage time and UV-C irradiation. Anthocyanin content was lower at 7 days, and higher at 17 days, at UV dosages of 1.0 or 2.0 KJ·m-2. Resveratrol content was higher in UV-C irradiated fruit at 7 days, while at 17 days there was no difference between UV-treated and untreated fruit.


HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1043A-1043 ◽  
Author(s):  
Artemio Z. Tulio ◽  
Ann M. Chanon ◽  
Nithya Janakiraman ◽  
Mustafa Ozgen ◽  
Gary D. Stoner ◽  
...  

This study was conducted to determine the effects of postharvest storage temperatures on the antioxidant capacity, anthocyanin compounds, phenolic constituents, and physico-chemical properties of black raspberries. Fresh `MacBlack' berries were stored at 4, 12, 20, and 28 °C for up to 11, 6, 4, and 3 days, respectively. Results showed that higher storage temperatures promoted tissue deterioration (cellular leakage), fungal growth, and moisture loss. The levels of the two major anthocyanins, cyanidin 3-rutinoside and cyanidin 3-xylosylrutinoside, increased by up to 2.7- and 1.9-fold, respectively, with increasing storage temperatures. The antioxidant capacity of berries, as measured by FRAP and ABTS assays, increased by up to 1.5- and 1.4-fold, respectively, which was accompanied by increases in soluble solids, total sugars, total phenolics, and total anthocyanin contents. Our findings indicate that postharvest storage at higher temperatures increases the level of bioactive compounds and antioxidant capacity in black raspberries, but this increase may be due in part to moisture loss and sugar metabolism. Storage at 4 °C maintained the level of bioactive compounds and antioxidant capacity present at harvest and prolonged the effective shelf life of the product. Further studies of black raspberry bioactive components as influenced by postharvest conditions and processing procedures (e.g., IQF, freeze-drying, air-drying) are warranted.


2021 ◽  
Vol 12 ◽  
Author(s):  
Xiaoyang Zhu ◽  
Yuxin Chen ◽  
Junyi Li ◽  
Xiaochun Ding ◽  
Shuangling Xiao ◽  
...  

Brassinosteroids act by delaying fruit ripening. The effects of different concentrations of 2,4-epibrassinolide (eBL) treatments on carambola fruit ripening were investigated. The results show that treatment of 2.8 mg L–1, eBL with 10 min effectively delays ripening and maintains the quality of carambola fruit. This is achieved by retarding color changes and firmness losses while maintaining high level of soluble protein content and vitamin C, and low organic acid content. eBL-delayed senescence may be due to the inhibition of respiration rate and enhanced antioxidant system. It is noteworthy that eBL treatment markedly reduces the content of fructose-6-phosphate (6-P-F) and enhances the activity of cytochrome oxidase (CCO), and the total activity of glucose-6-phosphate dehydrogenase (G-6-PDH) and 6-phosphate gluconate dehydrogenase (6-PGDH). eBL treatment induces the IAA and GA contents but reduces that of ABA. In general, senescence retardation and quality improvement by eBL treatment may be due to the enhanced antioxidant capacity and altered respiratory pathways.


Horticulturae ◽  
2018 ◽  
Vol 4 (3) ◽  
pp. 24 ◽  
Author(s):  
Yi-Wen Wang ◽  
Anish Malladi ◽  
John Doyle ◽  
Harald Scherm ◽  
Savithri Nambeesan

Ripening in blueberry fruit is irregular and occurs over an extended period requiring multiple harvests, thereby increasing the cost of production. Several phytohormones contribute to the regulation of fruit ripening. Certain plant growth regulators (PGRs) can alter the content, perception, or action of these phytohormones, potentially accelerating fruit ripening and concentrating the ripening period. The effects of three such PGRs—ethephon, abscisic acid, and methyl jasmonate—on fruit ripening were evaluated in the rabbiteye blueberry (Vaccinium virgatum) cultivars ‘Premier’ and ‘Powderblue’. Application of ethephon, an ethylene-releasing PGR, at 250 mg L−1 when 30–40% of fruit on the plant were ripe, accelerated ripening by increasing the proportion of blue (ripe) fruit by 1.5–1.8-fold within 4 to 7 days after treatment in both cultivars. Ethephon applications did not generally alter fruit quality characteristics at harvest or during postharvest storage, except for a slight decrease in juice pH at 1 day of postharvest storage and an increase in fruit firmness and titratable acidity after 15 days of postharvest storage in Powderblue. In Premier, ethephon applications decreased the proportion of defective fruit at 29 days of postharvest storage. Abscisic acid (600–1000 mg L−1) and methyl jasmonate (0.5–1 mM) applications did not alter the proportion of ripe fruit in either cultivar. These applications also had little effect on fruit quality characteristics at harvest and during postharvest storage. None of the above PGR applications affected the development of naturally occurring postharvest pathogens during storage. Together, data from this study indicated that ethephon has the potential to accelerate ripening in rabbiteye blueberry fruit, allowing for a potential decrease in the number of fruit harvests.


2017 ◽  
Vol 65 (18) ◽  
pp. 3737-3747 ◽  
Author(s):  
Carolina Rojas-Garbanzo ◽  
Maike Gleichenhagen ◽  
Annerose Heller ◽  
Patricia Esquivel ◽  
Nadine Schulze-Kaysers ◽  
...  

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