scholarly journals Post-Harvest Conservation of Baby Corn Under Controlled Atmosphere and Refrigeration

2019 ◽  
Vol 11 (15) ◽  
pp. 78
Author(s):  
Polyana Danyelle S. Silva ◽  
Caik M. Batista ◽  
Marcela C. Soares ◽  
Wagner F. Mota ◽  
Samy Pimenta
Keyword(s):  
Storage Time ◽  
Storage Condition ◽  
Physicochemical Characteristics ◽  
Quality Characteristics ◽  
Controlled Atmosphere ◽  
Production Chain ◽  
Post Harvest ◽  
Different Temperatures ◽  
Temperature Controlled ◽  
Storage Temperatures

The baby corn has been gaining ground in the market and arousing interest of producers. However, there is a barrier in its production chain due to the lack of scientific knowledge in the harvest and post-harvest strategies. Therefore, the objective of this study was to evaluate the changes in the physicochemical characteristics of the baby corn stored at different temperatures and under controlled atmosphere. The studies were performed at UNIMONTES with the ‘AG 1051’ baby corn spikletes. Two tests were performed, one considering the spikelets in the straw and the other with the husked spikelets. The tests were carried out under CRD, in a 2 × 2 × 6 factorial scheme, that is two storage temperatures (16 and 25 °C), two controlled atmosphere conditions (with and without PVC plastic wrap) and six evaluation periods (0, 3, 6, 9, 12 and 15 days after harvest) with four replications. The quality characteristics of the spikelets were analyzed in the post-harvest. the post-harvest quality preservation of baby corn in the straw and the husked ones was affected by temperature, controlled atmosphere and evaluation period. The best storage condition to maintain the main quality characteristics of the spikelets at post-harvest was observed at the temperature of 16 ºC with controlled atmosphere use. For the spikelets preserved with the presence of straw, the maximum storage time for maintenance of post-harvest characteristics was four days, and for spikelets stored without straw, the maximum storage time was two days and 12 hours, both at refrigerated temperature (16 °C) and under controlled atmosphere.

scholarly journals Changes in Biochemical Characteristics and Activities of Ripening Associated Enzymes in Mango Fruit during the Storage at Different Temperatures

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Md. Anowar Hossain ◽  
Md. Masud Rana ◽  
Yoshinobu Kimura ◽  
Hairul Azman Roslan
Keyword(s):  
Shelf Life ◽  
Biochemical Parameters ◽  
Storage Time ◽  
Storage Temperature ◽  
Starch Content ◽  
Titratable Acidity ◽  
Different Temperatures ◽  
Soluble Solid ◽  
Storage Temperatures ◽  
Carbohydrate Contents

As a part of the study to explore the possible strategy for enhancing the shelf life of mango fruits, we investigated the changes in biochemical parameters and activities of ripening associated enzymes of Ashwina hybrid mangoes at 4-day regular intervals during storage at −10°C, 4°C, and30±1°C. Titratable acidity, vitamin C, starch content, and reducing sugar were higher at unripe state and gradually decreased with the increasing of storage time at all storage temperatures while phenol content, total soluble solid, total sugar, and nonreducing sugar contents gradually increased. The activities of amylase,α-mannosidase,α-glucosidase, and invertase increased sharply within first few days and decreased significantly in the later stage of ripening at30±1°C. Meanwhile polyphenol oxidase,β-galactosidase, andβ-hexosaminidase predominantly increased significantly with the increasing days of storage till later stage of ripening. At −10°C and 4°C, the enzymes as well as carbohydrate contents of storage mango changed slightly up to 4 days and thereafter the enzyme became fully dormant. The results indicated that increase in storage temperature and time correlated with changes in biochemical parameters and activities of glycosidases suggested the suppression ofβ-galactosidase andβ-hexosaminidase might enhance the shelf life of mango fruits.

scholarly journals Effect of postharvest storage temperatures on the quality parameters of pistachio nuts

2013 ◽  
Vol 31 (No. 5) ◽  
pp. 467-473 ◽  
Author(s):  
E. Arena ◽  
G. Ballistreri ◽  
B. Fallico
Keyword(s):  
Fatty Acids ◽  
Peroxide Value ◽  
Storage Time ◽  
Saturated Fatty Acids ◽  
Quality Parameters ◽  
Peroxide Values ◽  
Pistachio Nuts ◽  
Different Temperatures ◽  
Pistachio Oil ◽  
Storage Temperatures

Pistachios from Italy and Turkey were stored at different temperatures (10, 20, and 30°C) and the moisture of the pistachios, the free fatty acids (FFA) content, the peroxide value, and triacylglycerols (TGs) composition of the extracted oils were evaluated. The content of FFA decreased during storage at 10°C and increased at 20 and 30°C. No differences between the peroxide values were found during storage at 10°C. A significant increase in the peroxide values was observed after 20 days at 20°C and 5 days at 30°C in both the Italian and Turkish samples. The main TGs found in the pistachio oil of both origins were OLO, OLL, OLP, LLL, LLP, OOP, OLLn, and OOO; these accounted for approximately 85% of the total TGs content. A decrease was observed in the amounts of TGs esterified with polyunsaturated fatty acids, such as LLP, OLP, LLL and OLL, and an increase of the relative amounts of TGs with monounsaturated and saturated fatty acids, such as OOO and OOP, with the increasing storage time and temperatures in both samples.

scholarly journals Effect of Ascophyllum nodosum seaweed extract on post-harvest 'Tommy Atkins’ mangoes

2018 ◽  
Vol 40 (3) ◽  
Author(s):  
Thiago Anchieta de Melo ◽  
Ilka Márcia Ribeiro de Souza Serra ◽  
Adryelle Anchieta Sousa ◽  
Thamires Yslanny Oliveira Sousa ◽  
Sérgio Florentino Pascholati
Keyword(s):  
Storage Time ◽  
Reducing Sugars ◽  
Titratable Acidity ◽  
Physicochemical Characteristics ◽  
Ascophyllum Nodosum ◽  
Soluble Solids ◽  
Post Harvest ◽  
Consequent Reduction ◽  
Pulp Sample ◽  
Different Doses

Abstract The aim of this study was to determine the effect of Ascophyllum nodosum extract (AN), applied in different doses on the physicochemical characteristics of post-harvest ‘Tommy Atkins’ mangoes. The selected mango fruits were treated with different extract concentrations (0%, 0.1%, 0.3%, 0.5% and 1.0%) and stored for 12 days at 25±2 °C and 75±5% RH. Every 3 days, fruit mass loss (PM), color angle (Hue) (AH), firmness, pH, titratable acidity (AT), content of total soluble solids in pulp (°Brix) and content of carbohydrates in shell were assessed. The experiments were carried out in CRD in a 5 x 5 factorial arrangement (concentrations x days of storage) with four replications. AN was effective in preventing PM, with a reduction of up to 40.2%, as observed at concentration 0.1% compared to control. There were no differences among concentrations on AH, however, all of them differed significantly from control with higher AH, especially on the 12nd day. Fruit firmness was lower in control, the pH increased with the storage time and AT decreased. For all these parameters, mangoes treated with the extract differed from control. The pulp sample °Brix increased with the storage time as well as the content of reducing sugars, with consequent reduction of non-reducing sugars in fruit shell. These tests indicate the possibility of using AN as an alternative management in preserving mangoes in the post-harvest stage.

scholarly journals 109 Evaluation of Postharvest Quality Parameters in Lulo (Naranjilla) Stored at Different Temperatures

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 407E-407
Author(s):  
J.G. Diaz ◽  
J.E. Manzano-Méndez
Keyword(s):  
Storage Time ◽  
Color Index ◽  
Storage Temperature ◽  
Quality Parameters ◽  
Fruit Weight ◽  
Postharvest Quality ◽  
Physical Parameters ◽  
The Andes ◽  
Different Temperatures ◽  
Storage Temperatures

Lulo (Solanum quitoense L.) fruits grown at the Andes farms, T·chira State in Venezuela, were harvested at the mature green stage, selected, washed, and transported to the postharvest Lab. Fruits were stored in small commercial carton boxes in storage rooms at 5, 10, and 15 °C during 3 weeks. Chemical parameters such as solid soluble concentration (SSC), pH, tritatable acidity (TA), ratio SSC/TA, and physical parameters such as Color: L*, Hue, Chroma, color index (a+b)/L × 100, texture and fresh fruit weight loss (FFWL), in pulp extract and from the whole fruit were analyzed at the initial and at the end of each storage week. These characteristics ranged in the fellowing way: SSC: 749% ± 8.09% and its media of 8.02%, TA: 1.05%–1.18% for temperature and 1.01–1.27 for storage time with an average of 1.16% (expressed as citric acid), color index: 4.54–5.22 for storage time and 4.30–5.13 for storage temperatures with an average of 4.86, chroma: 6.21–6.63 for storage time and 6.00–6.55 for storage temperatures with an average of 6.36, FFWL: 1.30%–1.44% for storage temperature and 0.67%–2.11% for storage time .The SSC decreased with increasing the storage temperature. The TA, color index, and chroma decreased with the storage time and increased with storage time, the FFWL values increased with storage temperatures and with storage time.

Study of the quality and antioxidant properties of tomatoes (Solanum lycopersicum L.) under different postharvest and dehydration conditions

2020 ◽  
Vol 13 (9) ◽  
Author(s):  
María Lorena Luna-Guevara ◽  
Teresita González-Sánchez ◽  
Adriana Delgado-Alvarado ◽  
María Elena Ramos-Cassellis ◽  
José Guillermo Pérez-Luna ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Rural Communities ◽  
Antioxidant Properties ◽  
Titratable Acidity ◽  
Physicochemical Characteristics ◽  
Soluble Solids ◽  
Convective Drying ◽  
Tomato Fruits ◽  
Solanum Lycopersicum L ◽  
Storage Temperatures

Objective: To study the effect of storage temperatures and dehydration conditions (solar and convective drying; SD, CD), on the quality, physicochemical parameters and antioxidant properties of tomato fruits. Methodology: The physicochemical characteristics pH, titratable acidity, soluble solids (°Bx) and color parameters (L*, a* and b*), were evaluated. The lycopene, carotenoids and antioxidant activity percentages retention of tomatoes fruits stored at 7 and 22 ° C for 5 days and subjected to SD (Temperature (T) of 67 °C and luminescence of 685 lum/sqf) and CD (T 70 °C, flow rates 0.5, 1.0 and 1.5 m/s), were analyzed. Results: The fruits reached humidities of 17 and 15% for SD and CD. The parameters pH, °Bx, L*, a*, b* were highest with 22°C and CD (1.5 m/s). The value of the carotenoids was higher in fruits stored at 7 ° C and subjected to CD (1.0 and 1.5 m/s) and SD with values of 83.85, 85.98 and 99.43%, respectively. The CD (0.5 m/s) and SD improved lycopene (94.37 and 95.14%) and the antioxidant activity with values of 73.06 and 97.21%. Implications: The application of solar dehydration depends on luminescence condition; however, it is inexpensive and environmentally friendly alternative. Conclusions: The results derived in a viable alternative for the conservation and commercialization of tomato fruits in rural communities

Quality Characteristics of Broiler Chicken Meat on Salt at Different Temperatures

2009 ◽  
Vol 12 (3) ◽  
pp. 681-690 ◽  
Author(s):  
Ann S. Mothershaw ◽  
Taghreed Gaffer ◽  
Isam Kadim ◽  
Nejib Guizani ◽  
Issa Al-Amri ◽  
...  
Keyword(s):  
Broiler Chicken ◽  
Quality Characteristics ◽  
Chicken Meat ◽  
Different Temperatures

scholarly journals Quality Characteristics of Semi-Moist Apricot-Cornflakes: Effect of Different Composite Coating Application and Storage Time

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 516
Author(s):  
Roghieh Sakooei-Vayghan ◽  
Seyed Hadi Peighambardoust ◽  
Rubén Domínguez ◽  
Mirian Pateiro ◽  
José M. Lorenzo
Keyword(s):  
Storage Time ◽  
Composite Coatings ◽  
Protein Isolate ◽  
Quality Characteristics ◽  
Moisture Loss ◽  
Coating Application ◽  
Hot Air ◽  
And Storage ◽  
Β Carotene

The effect of different composite coatings on quality of semi-moist apricot cubes mixed with cornflakes was investigated during 180 days of storage. The apricot cubes were osmotically dehydrated (OD) and coated before hot-air drying (HAD) at 60 °C. Chitosan-bees wax (CBW) and whey protein isolate-bees wax-oleic acid (WPI-BW-OA) coatings were applied after HAD and the samples were added to cornflakes. Application of OD and pectin-ascorbic acid (Pec-AA) coating (prior to HAD) and WPI-BW-OA coating (after HAD) led to significant retention of total phenol compounds, β-carotene and antioxidant activity in apricot cubes compared to uncoated and CBW-coated samples. WPI-BW-OA-coated samples gave significantly higher L* values (lighter color) and b* values (more creamy or yellowish color) and lower a* values (less reddish color) and browning values than control followed by CBW-coated apricots at any time of storage (p < 0.05). The rate of apricot moisture loss and cornflakes moisture gain was higher in uncoated apricot cubes, followed by CBW- and WPI-BW-OA-coated samples. Application of WPI-BW-OA coating was effective in retaining the crispness measured by lower firmness (Fmax) values in cornflakes upon storage. Based on the obtained results, WPI-BW-OA coating allowed effectively preserving the quality characteristics of semi-moist apricot cubes and cornflakes components in the mixed state.

The volatile exudates from germinating pea seeds of different viability and vigor

1985 ◽  
Vol 63 (6) ◽  
pp. 1035-1039 ◽  
Author(s):  
R. J. Gorecki ◽  
G. E. Harman ◽  
L. R. Mattick
Keyword(s):  
Gas Chromatography ◽  
Relative Humidity ◽  
Trichoderma Harzianum ◽  
Storage Time ◽  
Enterobacter Cloacae ◽  
Storage Condition ◽  
Seed Vigor ◽  
Embryonic Axes ◽  
Pea Seeds ◽  
Germinating Seeds

Pea seeds var. Kriter were stored aseptically at 92% relative humidity and 30 °C. After 0, 4, 6, 8, or 10 weeks of storage, viability, vigor, and volatile exudates were determined on sublots of seeds. As storage time increased, vigor, as measured by dehydrogenase activity, growth of embryonic axes, and conductivity decreased. Later, viability also decreased. Imbibing and germinating pea seeds produced ethanol, acetaldehyde, and lesser amounts of methanol. No qualitative differences in volatile exudates were observed from germinating seeds regardless of age or storage condition. Nonaged seeds with highest vigor produced the smallest amounts of volatiles, but with increased aging the quantities of ethanol and acetaldehyde gradually increased. Dry seed produced small quantities of both volatiles. The amount of these compounds produced reached a maximum between 12 and 48 h of germination. Infestation of seed samples with Enterobacter cloacae or Trichoderma harzianum reduced the quantities of these compounds measured. These results indicate that determinations of acetaldehyde and ethanol in the space over germinating seeds by means of gas chromatography may be a useful seed vigor test.

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