Cold Storage Influences Postharvest Chilling Injury and Quality of Peach Fruits

Author(s):  
Ahmad Sattar Khan ◽  
Kamal Hussain ◽  
Hafiz Muhammad Shoaib Shah ◽  
Aman Ullah Malik ◽  
Raheel Anwar ◽  
...  

Peach (Prunus persica L.) fruits exhibit limited postharvest shelf and storage life due to rapid softening. Therefore, in the present study effect of cold storage was investigated on postharvest chilling injury (CI) and fruit quality during ripening following cold storage on five peach cultivars including ‘Peach Select No. 3’ (PS-3), ‘Florida Gold’ (FG) and ‘Florida King’ (FK) as early season maturing, and ‘Indian Blood’ (IB) and ‘Maria Delezia’ (MD) as late season maturing cultivars. Peach fruits harvested at commercial maturity were ripened at ambient conditions following cold storage for 0, 10 and 20 days at 0±1 °C with 80±5% RH. Data regarding peach fruit quality parameters and incidence of CI were recorded at fully ripe eating soft stage. Results indicated that apart from the cultivars, fruit weight loss, levels of soluble solid content (SSC) and sugars increased as the storage period was progressed. However, fruit firmness, titratable acidity (TA), and ascorbic acid content significantly reduced during cold storage. Among early season maturing peach cultivars, fruits of ‘FG’ and among late season maturing peach cultivars, fruits of ‘MD’ showed better postharvest shelf life and fruit quality during ripening following cold storage. The highest SSC and SSC: TA ratio were observed in ‘FG’ peach fruits; however, these fruits exhibited 50% and 75% CI after 10 and 20 days of cold storage, respectively. During first 10 days of cold storage, ‘PS-3’ peach fruits showed better taste with higher fruit firmness and ascorbic acid content, however, later on the highest level of CI was observed in these fruits. Among all the tested peach cultivars, the ‘IB’ peach fruits showed higher fruit firmness, lower weight loss, as well as acceptable biochemical fruit quality (SSC, SSC; TA, ascorbic acid content, total sugars) during 20 days of cold storage without showing any symptoms of CI.

Author(s):  
Mahmood Ul Hasan ◽  
Rana Naveed Ur Rehman ◽  
Aman Ullah Malik ◽  
Muhammad Wasim Haider ◽  
Zeeshan Ahmed ◽  
...  

Chilling injury in cucumber is the major issue under low temperature storage, which substantially affects cosmetic quality and market value of fruits. Present study was aimed to assess the effect of L-arginine to alleviate surface pitting caused due to chilling injury and response of various quality attributes during cold storage (5 ± 1 °C; RH 90 ± 5%). Cucumber cv. ‘7003’ fruits were treated with different concentrations of L-arginine (0.0, 0.5, 1.0 and 1.5 mM) and stored for 16 days. Fruits were removed at 4 days storage interval followed by 1 day of conditioning (22 ± 2 °C) before quality analysis. Visual quality, fruit colour, decay, fruit weight loss, firmness, chilling injury (CI), electrolyte leakage, taste, texture, flavour, aroma, soluble solids content (SSC), titratable acidity (TA), sugar: acid ratio (SSC/TA ratio) and ascorbic acid content were measured for cucumber fruits. Overall, it was noted that L-arginine treated fruits showed lower fruit weight loss and electrolyte leakage, and maintained taste, texture, aroma, SSC, and sugar: acid ratio during storage. Fruits treated with 0.5 mM L-arginine had significantly reduced chilling injury and decay, maintained fruit colour, firmness and flavour, and displayed higher ascorbic acid content compared with control. Conclusively, pre-storage application of L-arginine (0.5 mM) can be employed as promising technique to alleviate postharvest chilling injury and maintain fruit quality of cucumber under cold storage.


Author(s):  
Waseem Siddique ◽  
Mahmood Ul Hasan ◽  
Muhammad Suliman Shah ◽  
Muhammad Moaaz Ali ◽  
Faisal Hayat ◽  
...  

Spinach is a widely consumed leafy green vegetable, but it exhibits short storage life due to quick loss in moisture contents during postharvest period. The present study was aimed to evaluate the effect of blanching treatment and different types of packaging on spinach quality under cold storage conditions. Fresh spinach after treatment [T0 = control, T1 = blanching, T2 = modified atmosphere packaging (MAP-1, Xtend®), T3 = MAP-2 (Bio-fresh®) and T4 = perforated polyethylene (PE)] application was stored at 4±1 °C and 90±5 % RH for 20 days. Samples were analyzed at the time of harvest (0 day) and then after 3 days interval during storage. MAP treatments performed well and had a positive effect on spinach by maintaining its freshness and quality. Decay, ion leakage and weight loss were observed lower in spinach packed in MAP-1(Xtend®) followed by MAP-2 (Bio-Fresh®) and perforated PE packaging. MA packaging maintained higher ascorbic acid content, chlorophyll, and total antioxidants of spinach during storage. Nevertheless, spinach packed in perforated PE also displayed better results in maintaining quality as compared to control and blanched samples. The maximum weight loss, poor quality, minimum ascorbic acid content with lower consumer acceptability was recorded in control samples. Overall, MAP-1(Xtend®) could be used as a promising technology to maintain the quality of spinach up to 20 days of cold storage.


2021 ◽  
pp. 1-8
Author(s):  
Márcia Masson Mendes dos Santos ◽  
Gilmara Pereira da Silva ◽  
Renato de Mello Prado ◽  
José Sidnaldo Pinsetta Junior ◽  
Ben-Hur Mattiuz ◽  
...  

Author(s):  
Nida Akram ◽  
Mahmood Ul Hasan ◽  
Rana Naveed Ur Rehman ◽  
Rana Muhammad Ateeq Ahmad ◽  
Zeeshan Ahmed ◽  
...  

Chilling injury is the critical issue in sweet pepper fruit under low temperature storage. Present work was aimed to evaluate the effect of different concentration of methyl salicylate (MS) and L-arginine (Arg) on chilling injury and overall quality of sweet pepper fruits cv. ‘Winner’. The treatments were T1 = Control, T2 = 0.01mM MS, T3 = 0.05 mM MS, T4 = 1mM Arg, T5 = 1.5mM Arg and T6 = 0.01mM MS+1.5mM Arg. After respective treatment (for 10 min) fruits were kept at 5 ± 1 ◦C with 85-90 % RH for 28+2 days of storage. Physical, biochemical, and phytochemical parameters were studied at 7 days interval followed by two days of reconditioning at ambient conditions (25 ± 2 °C). On last removal (28+2days), sweet pepper fruits treated with combined MS and Arg treatment (T6) showed highly significant results in lower fruit weight loss (8.3%), maintained fruit colour (0.3 score) and firmness (13.4N), and reduced wrinkling (2 score), disease incidence (0.4 score), ion leakage (45.4%), alleviated chilling injury (1.7 score), retained total antioxidants (49.1%) and total phenolic content (74.4 mg 100 g-1 GAE FW) as compared to control. In addition, the ascorbic acid content was observed higher in all treatments in comparison with untreated control fruits. In conclusion, MS and Arg combine treatment improved storage potential with reduced chilling injury by maintaining higher total phenolic concentrations, ascorbic acid content and total antioxidants in terms of DPPH radical scavenging activities, and markedly maintained overall quality of sweet pepper under cold storage condition at 5 °C for 28 days.


Author(s):  
Feyza Nur Dursun ◽  
Erdinc Bal

In this study, the effect of postharvest salicylic acid (2 mM), oxalic acid (5 mM), putrescine (2 mM) and calcium (4% CaCl2) applications on storage performance of Autumn Giant plum fruit were investigated. After applications, plum fruits were placed in modified atmosphere packaging (MAP) and stored for 40 days at 85-90% relative humidity conditions at 0.5±0.5°C. In order to determine the fruit quality characteristics after treatments, weight loss, soluble solids content, titratable acidity, fruit firmness, ascorbic acid, total flavonoids, total phenolics and total antioxidant content analysis were performed at 10 days’ intervals. According to the results, the effect of applications on weight loss was not significant. The maximum decrease in flesh firmness, titratable acid and ascorbic acid content during storage was determined in control fruits. Although fluctuations in the form of increase or decrease in biochemical compounds were generally observed, decreases occurred according to harvest value at the end of storage period. Considering all measurements and evaluations, it was determined that application of salicylic acid and putrescine had a more positive effect on preservation of fruit quality properties and biochemical content of Autumn Giant plum cultivar during storage than other applications.


HortScience ◽  
1996 ◽  
Vol 31 (1) ◽  
pp. 109-111 ◽  
Author(s):  
J. Prohens ◽  
J.J. Ruiz ◽  
F. Nuez

Tamarillo [Cyphomandra betacea (Cav.) Sendt., Solanaceae] dark-red-, red-, and yellow-type fruit were sorted into two maturity stages (green and turning); dipped in ethephon at 0, 250, 500, or 750 mg·liter–1; and kept at 18 or 28C. Seven days later, fruit dipped in ethephon at 500 or 750 mg·liter–1 and stored at 28C showed a color score, maturity index, and ascorbic acid content similar to those tree-ripened, thus making it possible for harvesting to be advanced 36 days. Under these conditions, weight loss was always lower than 8.5%, resulting in only slight symptoms of shriveling that did not affect commercial quality. Postharvest ripening reduces the risk of crop failure, increases earliness, and concentrates harvesting. Chemical name used: (2-chloroethyl)phosphonic acid (ethephon).


2016 ◽  
Vol 38 (4) ◽  
Author(s):  
MARIA LUIZA LYE JOMORI ◽  
NATALIA DALLOCCA BERNO ◽  
RICARDO ALFREDO KLUGE

ABSTRACT Degreening is a postharvest technique that consists of applying ethylene to oranges fresh fruits to improve skin color. In Brazil, this technique is still not widely applied due to a lack of specific research, resulting in poor fruit coloration, which limits the oranges’ exportation. The objective of this study was to investigate the de-greening effect of ethylene application after cold storage in ‘Valencia’ oranges. The ethylene treatments (0; 5 and 10 µL L-1 for 96 h at 22°C) were applied after storage for 30 days at 5°C. After ethylene application, the fruit were stored for three days at 22°C to simulate a shelf life. The skin color rate enhanced after ethylene treatment due to increased chlorophyllase activity. The content of carotenoids did not change, nor did the soluble solids, titratable acidity, ratio, percentage of juice and ascorbic acid content. The levels of acetaldehyde and ethanol in the juice were also assessed, and unpleasant odors or flavors did not occur despite a small increase in the acetaldehyde content. Therefore, the ethylene application after cold storage is efficient to improve the skin color of ‘Valencia’ orange without changing the internal quality.


1953 ◽  
Vol 18 (1-6) ◽  
pp. 532-537 ◽  
Author(s):  
KATHRYN J. ORR ◽  
HELEN DENNING ◽  
CAREY D. MILLER

Author(s):  
Thejangulie Angami ◽  
Homeswar Kalita ◽  
Jitendra Kumar ◽  
D. Ramajayam ◽  
Raghuveer Singh ◽  
...  

A field experiment was executed during 2013-16 at ICAR Research Farm, Gori, ICAR (Research Complex) for NEH Region, Arunachal Pradesh Centre, Basar to find out the optimum planting time for yield and quality attributes of Grand Naine banana. The experiment was laid out in RBD having five treatments with four replications. The study divulged that the planting dates had a significant influence on growth, yield and fruit quality of banana. Fruits harvested from mid-may planting recorded the highest in yield based parameters viz. number of hands per bunch (13.17), number of fingers per bunch (162.63) and bunch weight (24.67 kg) respectively. However, fruits from mid-june planting exhibited the highest finger weight (148.67 g) which was statistically at par with mid-may planting (147.54 g). It was noted that plants of mid-june planting produced the maximum number of functional leaves at the shooting stage (15.38) which was found at par with mid-may planting (15.13).The fruit quality attributes like sugars, ascorbic acid, acidity were also influenced by planting times whereas it had no significant effect on TSS content of the fruits. Fruits from mid-may plant recorded the highest TSS (21.03°Brix), minimum acidity (0.23%) and highest ascorbic acid content (14.99 mg per 100 g) followed by mid-june planting with TSS, acidity and ascorbic acid content of (20.56°Brix), (0.24%) and (14.47 mg per 100 g) respectively. Starch content was found maximum in fruits from mid-august planting (2.08%) whereas, minimum starch content was recorded in fruits from mid-june planting (0.71%) inferring that mid-may is the optimum time for planting for Grand Naine variety of banana under subtropical mid-hill conditions of Arunachal Pradesh justifying future actions in the expansion of planting.


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