scholarly journals Aloe-Based Edible Coating to Maintain Quality of Fresh-Cut Italian Pears (Pyrus communis L.) during Cold Storage

Horticulturae ◽  
2021 ◽  
Vol 7 (12) ◽  
pp. 581
Author(s):  
Roberta Passafiume ◽  
Giovanni Gugliuzza ◽  
Raimondo Gaglio ◽  
Gabriele Busetta ◽  
Ilenia Tinebra ◽  
...  
Keyword(s):  
Hydroxypropyl Methylcellulose ◽  
Solid Content ◽  
Edible Coating ◽  
Postharvest Quality ◽  
Soluble Solid Content ◽  
Pyrus Communis L ◽  
Nutritional Characteristics ◽  
Soluble Solid ◽  
Fresh Cut ◽  
Pomegranate Seeds

Pear fruits are known for their antioxidant and nutritional characteristics. However, they are very susceptible to rapid decay. Edible coating (EC) represents a good strategy to maintain postharvest quality. The effects of two EC in slowing down the senescence processes in fresh-cut ‘Coscia’ pears were investigated: EC1 (A. vera gel, hydroxypropyl-methylcellulose and pomegranate seeds oil (PSO), EC2 (A. vera gel and hydroxypropyl-methylcellulose). Weight loss, firmness and colour decrease more slowly in both EC-treated than in untreated (CTR) slices; soluble solid content increases faster in CTR, indicating a faster ripening process. The specific investigation of undesired microorganisms did not generate any colony in all analysed samples. Sensory analysis confirmed that the tasters preferred the EC2-treated samples, as they were the only ones that did not show undesirable flavours until the last day of storage.

scholarly journals Effect of Cross-Linked Alginate/Oil Nanoemulsion Coating on Cracking and Quality Parameters of Sweet Cherries

Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 449
Author(s):  
Camilo Gutiérrez-Jara ◽  
Cristina Bilbao-Sainz ◽  
Tara McHugh ◽  
Bor-Sen Chiou ◽  
Tina Williams ◽  
...  
Keyword(s):  
Titratable Acidity ◽  
Quality Parameters ◽  
Solid Content ◽  
Postharvest Quality ◽  
Soluble Solid Content ◽  
Nutritional Values ◽  
Quality Properties ◽  
Vapor Transfer ◽  
Sweet Cherries ◽  
Soluble Solid

The cracking of sweet cherries causes significant crop losses. Sweet cherries (cv. Bing) were coated by electro-spraying with an edible nanoemulsion (NE) of alginate and soybean oil with or without a CaCl2 cross-linker to reduce cracking. Coated sweet cherries were stored at 4 °C for 28 d. The barrier and fruit quality properties and nutritional values of the coated cherries were evaluated and compared with those of uncoated sweet cherries. Sweet cherries coated with NE + CaCl2 increased cracking tolerance by 53% and increased firmness. However, coated sweet cherries exhibited a 10% increase in water loss after 28 d due to decreased resistance to water vapor transfer. Coated sweet cherries showed a higher soluble solid content, titratable acidity, antioxidant capacity, and total soluble phenolic content compared with uncoated sweet cherries. Therefore, the use of the NE + CaCl2 coating on sweet cherries can help reduce cracking and maintain their postharvest quality.

scholarly journals Postharvest quality of hydroponic strawberry coated with chitosan-calcium gluconate

2020 ◽  
Author(s):  
Mai Sao Dam ◽  
Xuan Thi To ◽  
Quoc Tan Pham Le ◽  
Lien Le Phuong Nguyen ◽  
László Friedrich ◽  
...  
Keyword(s):  
Weight Loss ◽  
Calcium Gluconate ◽  
Control Sample ◽  
Fungal Growth ◽  
Storage Period ◽  
Solid Content ◽  
Postharvest Quality ◽  
Control Group ◽  
Soluble Solid Content ◽  
Soluble Solid

AbstractThe aim of this study was to evaluate the effect of edible coating on hydroponic strawberry during storage. Strawberries were coated with either 1% or 1.5% chitosan (CS) or with solution containing 1.5% chitosan and 0.5% calcium gluconate (CaGlu). After treatment, samples were stored at 10 °C, RH 90% for 10 days. The weight loss, soluble solid content, firmness, surface color, pH, and percentage of decay were evaluated each day during the experiment. It was observed that coating extended the postharvest life of hydroponic strawberry compared to control. Fungal growth occurred on control group at the 5th day and fruit treated with 1% CS at the 8th day of the storage period, whereas no visible sign was detected for other treatments. Soluble solid content and pH showed only minor change for all samples. Weight loss of coated fruit was below 6% after 10 days of storage, whereas the weight loss of control samples was around 10% at the end of measurement. Moreover, coating could maintain the firmness of strawberry compared to the control. The combination of chitosan and calcium gluconate showed the potential for prolonging the storage period of hydroponic strawberry till 10 days without decay, whereas the control sample had more than 60% of rotted fruit.

scholarly journals Postharvest Application of Aloe vera Gel-Based Edible Coating to Improve the Quality and Storage Stability of Fresh-Cut Papaya

2020 ◽  
Vol 2020 ◽  
pp. 1-10 ◽  
Author(s):  
Vittorio Farina ◽  
Roberta Passafiume ◽  
Ilenia Tinebra ◽  
Dario Scuderi ◽  
Filippo Saletta ◽  
...  
Keyword(s):  
Sodium Alginate ◽  
Antimicrobial Agents ◽  
Aloe Vera ◽  
Titratable Acidity ◽  
Solid Content ◽  
Soluble Solid Content ◽  
Aloe Vera Gel ◽  
Soluble Solid ◽  
Fresh Cut ◽  
Ripening Rate

Ready-to-eat products are damaged by various factors, including exposure to O2 and CO2, extreme temperatures, and rapid decay, due to trauma during processing. The use of natural antimicrobial agents and antioxidants might extend the shelf-life of the fruits. The aim of this work is to investigate the effects of four different antibrowning and gelling agents added into the Aloe vera gel-based edible coatings and applied to fresh-cut papaya. EC1 treatment consists of Aloe vera gel (30% v/v), EC2 contains CaCl2 (5% v/v), EC3 contains K carrageenan (0.5% v/v), and EC4 contains sodium alginate (1.5% v/v) and K carrageenan (0.5% v/v). The fruits treated with EC2 showed the best results while maintaining high values in terms of firmness (that differ from the control of 42.5%), soluble solid content (that differ from the control of 14.6%), and titratable acidity (that differ from the control of 49%). Hence, the addition of CaCl2 also reduces the ripening rate and loss of color without altering the product’s sensory qualities. EC3 and EC4 treatments have provided an oxygen barrier and reduced respiratory rate, increasing the firmness retention and keeping a high C∗ value thanks to K carrageenan and sodium alginate.

scholarly journals Effect of perforation packaging on quality of fresh-cut carrot during storage

2020 ◽  
Author(s):  
Mai Sao Dam ◽  
Lien Le Phuong Nguyen ◽  
Tamás Zsom ◽  
Géza Hitka ◽  
Ildikó Csilla Zeke ◽  
...  
Keyword(s):  
Weight Loss ◽  
Cold Storage ◽  
Solid Content ◽  
Soluble Solid Content ◽  
Surface Color ◽  
Headspace Oxygen ◽  
Soluble Solid ◽  
Polyethylene Bags ◽  
Fresh Cut

AbstractThe aim of this work was to evaluate the effect of packaging perforation on quality of carrot slices during cold storage at 5 °C. Polyethylene bags with different number of perforations (3, 4, and 6) were used in this experiment. Headspace oxygen concentration, respiration, weight loss, surface color, firmness, pH, and soluble solid content were examined throughout storage. It was observed, that all the investigated packaging were effective in maintaining the quality of carrot slices compared to the control. There was no symptom of decay until 12 days. In addition, pH, soluble solid content, and firmness showed nonsignificant change. Moreover, weight loss of packed carrot slices was below 2% after 12 days of storage. Packed carrot had better appearance at the end of experiment (12 days) than that of control.

Role of Phospholipase D Inhibitor in Regulating Expression of Senescencerelated Phospholipase D gene in Postharvest Longan Fruit

2019 ◽  
Vol 14 (7) ◽  
pp. 649-657 ◽  
Author(s):  
Li Li ◽  
Jiemin Li ◽  
Jian Sun ◽  
Ping Yi ◽  
Changbao Li ◽  
...  
Keyword(s):  
Phospholipase D ◽  
Ascorbic Acid Content ◽  
Titratable Acidity ◽  
Significant Inhibition ◽  
Solid Content ◽  
Total Soluble Solid ◽  
Total Phenolic ◽  
Soluble Solid Content ◽  
Soluble Solid ◽  
Pericarp Browning

Background: Phospholipase D (PLD)is closely related to browning and senescence of postharvest longan fruit. Objective: This study investigated the effects of 2-butanol (a PLD inhibitor) on the expression and regulation of PLD during storage of longan fruit at a low temperature. Methods: Senescence-related quality indices showed that the 2-butanol-treated fruit presented lower pericarp browning index, pulp breakdown index and total soluble solid value than the untreated fruit. Results: The fruit treated by 60 µL/L 2-butanol exhibited the strongest inhibition on senescence, which significantly delayed changes in weight, titratable acidity content, total soluble solid content and ascorbic acid content. This treatment maintained a high level of total phenolic content and caused significant inhibition on pericarp browning and pulp breakdown. Through ELISA method, 60 µL/L 2-butanol treatment also reduced PLD activity. Real-time RT-PCR (RT-qPCR) results showed that PLD mRNA expression level was inhibited by 60 µL/L 2-butanol within 15 days. Western-blotting results further confirmed the differential expression of PLD during storage, and a relatively higher expression for PLD protein was found in control compared to the 2-butanoltreated fruit during 15-d storage. Conclusion: These results provided a scientific basis and reference to further investigating postharvest longan quality maintenance by regulating the PLD gene expression.

scholarly journals The Mater-Bi® biodegradable film for strawberry (Fragaria x ananassa Duch.) mulching: effects on fruit yield and quality

2016 ◽  
Vol 11 (3) ◽  
pp. 203 ◽  
Author(s):  
Luigi Morra ◽  
Maurizio Bilotto ◽  
Domenico Cerrato ◽  
Raffaella Coppola ◽  
Vincenzo Leone ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Titratable Acidity ◽  
Solid Content ◽  
Soluble Solid Content ◽  
Chemical Parameters ◽  
Biodegradable Film ◽  
Yield And Quality ◽  
Physical Chemical ◽  
Soluble Solid

Two trials in different agricultural farms were carried out from October 2014 to June 2015 with the aim to assess the advantages linked to the substitution of the low density polyethylene (LDPE) films for soil mulching with the Mater-Bi<sup>®</sup> biodegradable films in the strawberry cultivation under tunnel in Campania. Lifetime of biodegradable mulch and influence of type of mulch on the yield and the quality of cvs Sabrina and Fortuna were evaluated. Plants were cultivated on mulched, raised beds, high 40 cm from bottom soil. Mater-Bi<sup>®</sup> film was 20 <span>µ</span>m thick while LDPE film was 50 mm thick. The physical-chemical parameters (firmness, pH, total soluble solid content, titratable acidity and skin colour) and some bioactive compounds (total polyphenols, flavonoids, anthocyanins, antioxidant activity) of fruits were determined by three samplings effected in consecutive months (from March to May 2015) of the harvest cycle. Biodegradable film guaranteed an effective mulch along the whole strawberry cycle (9-10 months including the time of drawing up of film). Yields of cv Sabrina on LDPE was 18% higher than those on Mater-Bi<sup>®</sup> while the opposite was detected in cv Fortuna (+10%). The physical-chemical parameters of fruits were not modified by the mulches. The content of the bioactive compounds, instead, resulted, in each time of sampling, significantly higher in fruits picked on Mater-Bi<sup>®</sup> based film.

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