scholarly journals Effect of Chitosan Coating on Physiological Responses and Nutritional Qualities of Tomato Fruits during Postharvest Storage

2019 ◽  
pp. 1-11
Author(s):  
Naznin Sultana ◽  
H. M. Zakir ◽  
M. A. Parvin ◽  
S. Sharmin ◽  
H. P. Seal
Keyword(s):  
Weight Loss ◽  
Shelf Life ◽  
Room Temperature ◽  
Physiological Responses ◽  
Postharvest Storage ◽  
Tomato Fruits ◽  
Chitosan Coating ◽  
Study Results ◽  
Fruit Samples ◽  
Nutritional Qualities

This experiment was conducted to evaluate the effect of chitosan coating on physiological responses and nutritional qualities of tomato fruits at postharvest storage. There were four treatments of chitosan viz. T0 (control), T1 (0.10%), T2 (0.20%) and T3 (0.30%), and two storage conditions viz. in refrigerator (4°C) and room temperature (≈23-25°C). The matured light yellow tomato fruit samples were collected at 10, 20, 30 and 50 days after postharvest storage to assess physiological parameters viz. shelf life and weight loss as well as to determine lycopene and mineral constituents viz. Ca, Mg, P, S, Na and K. The mean weight loss of tomato fruits were 0.64, 1.28, 1.59 and 2.28% at 4°C, while it was 0.88, 1.84, 2.60 and 4.80% at room temperature at 10, 20, 30 and 50 days after postharvest storage, respectively. The shelf life of tomato fruits ranged between 58.3-100.0, 50.0-100.0, 33.3-75.0 and 16.7-66.8% at 4°C, while the ranges were 66.8-100.0, 50.0-100.0, 33.3-75.0 and 0.0-41.8% at room temperature at 10, 20, 30 and 50 days after postharvest storage, respectively. As regards to weight loss and shelf life, the study results inferred that chitosan coating with 0.2% solution is useful at postharvest storage of fruits. The study results revealed that storage temperatures (4°C and ≈23-25°C) had no effect on the total contents of different mineral element of tomato fruits but lycopene content reduced almost twice at refrigerated condition. On the other hand, the effect of chitosan coating on Ca, Mg, P, S, Na and K contents of tomato fruits at different days after postharvest storage were highly significant at both conditions. Finally, the study results concluded that 0.2% chitosan based coatings in tomato fruits proved to extend the shelf life by decreasing the decay incidence and weight loss, and refrigerated condition is better than that of room temperature.

scholarly journals Effective ?-radiation Dose on Chitosan for Preservation of Mangoes (Mangifera indica)

2013 ◽  
Vol 2 ◽  
pp. 35-40 ◽  
Author(s):  
Ashna Islam ◽  
Mahfuza Sharifa Sultana ◽  
Fahmida Parvin ◽  
Mubarak A Khan
Keyword(s):  
Weight Loss ◽  
Radiation Dose ◽  
Shelf Life ◽  
Effective Dose ◽  
Room Temperature ◽  
Color Change ◽  
Mangifera Indica ◽  
Chitosan Solution ◽  
Effective Radiation Dose ◽  
Effective Radiation

The effective dose of ? radiation on chitosan for mango preservation was studies in this work. The 2% chitosan solution was irradiated with at various total doses (50-200 kGy). The mature green mangoes were soaked in un-irradiated and irradiated chitosan solutions and then they were stored at normal room temperature. The percentage of weight loss, color change and percentage of spoilage were observed for 15 days in control, un-irradiated and irradiated chitosan coated mangoes. The overall results showed the superiority of 50 kGy and 100 kGy irradiated chitosan in extending shelf life of mango as comared to control, un-irradiated and 120 kGy to 200 kGy irradiated chitosan. Jahangirnagar University Environmental Bulletin, Vol.2, 35-40, 2013 DOI: http://dx.doi.org/10.3329/jueb.v2i0.16328

Post harvest behavior of tomato as influenced by nitrogen and potassium levels

2019 ◽  
Vol 4 (02) ◽  
pp. 140-147
Author(s):  
S. Paudel ◽  
P. Pantha
Keyword(s):  
Weight Loss ◽  
Lycopersicon Esculentum ◽  
Vitamin C ◽  
Shelf Life ◽  
Block Design ◽  
Ambient Condition ◽  
Tomato Fruits ◽  
Color Development ◽  
Randomized Complete Block Design ◽  
Four Levels

Tomato (Lycopersicon esculentum) is highly perishable and has potential for processing industries in bumper producing seasons in Nepal. The study on judicious use of nitrogen and potassium levels was aimed to explore the quality attributes along with the shelf life of tomato fruits. Three levels of nitrogen comprising 0 kg/ha (N0), 100 kg/ha (N100), 200 kg/ha (N200) and four levels of potassium 0 K2O kg/ha (K0), 80 K2O kg/ha (K80), 160 K2O kg/ha (K160), 240 K2O kg /ha (K240) were used as treatments in randomized complete block design with three replications at Chitwan (Inner Terai) Nepal. Tomatoes at breaker stage were harvested from the field and 10 fruits from each treatment per replication were kept for physiological weight loss, color rating and shelf life in ambient condition (17.5±3 0C and 80.5±6.5 % RH). Fruit quality with respect to physicochemical properties like firmness, TSS, TA, pH and Vitamin C was assessed at the end of shelf life. Higher potassium levels hasten color development and increased TSS, firmness and vitamin C content. Physiological weight loss was greatly reduced and extended shelf life was achieved with 100 kg N/ha and 240 kg K2O/ha.

scholarly journals Effect of Shrimp Chitosan Coating on Physico-chemical Properties and Shelf Life Extension of Banana

2019 ◽  
Vol 6 (1) ◽  
pp. 41-54
Author(s):  
Md. Belal Hossain Sikder ◽  
M Muksitu Islam
Keyword(s):  
Weight Loss ◽  
Shelf Life ◽  
Disease Severity ◽  
Storage Period ◽  
Ash Content ◽  
Soluble Solids ◽  
Life Extension ◽  
Post Harvest ◽  
Chitosan Coating ◽  
Post Harvest Loss

Banana is highly perishable fruit and shelf life is short, which leads resulting post-harvest loss consistently in Bangladesh. To lessen the post-harvest loss and draw out the time span of the usability of banana, green mature bananas were treated with 0.5%, 0.75%, and 1% chitosan, individually. For the subsequent treatments, bananas were stored at room temperature. The viability of the coating in extending fruit’s shelf-life was assessed by evaluated total weight loss, ash content, total soluble solids (TSS), pH, titratable acidity (TA), disease severity and shelf life during the storage period. Chitosan coating reduced respiration activity, thus delaying ripening and the rate of decay due to senescence. The chitosan-coated banana samples had a better outcome on weight loss, ash content, pH, TSS, TA and disease severity values as compared to control samples. Banana coated with 1% chitosan showed less weight reduction and lessened obscuring than different treatments and control. Disease severity was astoundingly lessened by chitosan covering application. Chitosan coating extended banana up to the shelf life of more 2 to 4 days. From this investigation, it demonstrated that 1% chitosan was more appropriate in extending the shelf-life and better quality of banana during ripening and storage at ambient temperature.

scholarly journals THE EFFECT OF CHITOSAN COATING ON THE SHELF-LIFE OF GREEN PEPPERS AND CUCUMBERS.

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1133c-1133
Author(s):  
Ahmed El Ghaouth ◽  
Joseph Arul ◽  
Rathy Ponnampalam ◽  
Francois Castaigne
Keyword(s):  
Weight Loss ◽  
Water Stress ◽  
Shelf Life ◽  
Chitosan Coating

The effect of chitosan coating on green peppers and cucumbers stored at 13°C and 85% R.H. on weight loss, quality and respiration was assessed. Chitosan coating markedly reduced the weight loss of both green peppers and cucumbers, with greater effect at higher concentration. In addition, color loss, wilting, decay and respiration was significantly lower in coated fruits than in the control.The results of this study indicate that the mechanism by which chitosan coating delay senescence in green peppers and cucumbers is more likely due to its ability to alleviate water stress than to modify the internal microatmosphere.

Research on Preservation of Synsepalum Dulcificum by Coatings

2011 ◽  
Vol 239-242 ◽  
pp. 2158-2162 ◽  
Author(s):  
Cheng Lun Liu ◽  
Chun Lan He ◽  
Tai Ping Xie ◽  
Yu E Yang ◽  
Ting Xia Liang
Keyword(s):  
Weight Loss ◽  
Room Temperature ◽  
Sensory Quality ◽  
Tween 80 ◽  
Loss Ratio ◽  
Dpph Radical ◽  
Coating Films ◽  
Chitosan Coating ◽  
Optimum Formulation ◽  
Weight Loss Ratio

The preservation of Synsepalum dulcificum has been researched by using chitosan coating as the antistaling agent at room temperature. The physicochemical indexes, such as rot rate, weight loss ratio, scavenging capability of DPPH• radical, total acidity and sensory quality, were assayed during the process of storage. The optimum formulation of the fresh-keeping agent was as follows: 1.5% chitosan, 1% ascorbic acid, 0.1% Tween-80 and 1.0% glycerol. The results showed that the coating films could effectively decrease the loss of fruit nutrition and weight-loss ratio, inhibited the respiration and delayed the senescent course during storage.

scholarly journals Effect of Zinc and Boron Application on Lycopene and Nutritional Qualities of Tomato

2021 ◽  
pp. 27-36
Author(s):  
Supti Mallick ◽  
R. C. Das ◽  
H. M. Zakir ◽  
M. S. Alam
Keyword(s):  
Vitamin C ◽  
Total Acidity ◽  
Tomato Fruits ◽  
Nutrient Contents ◽  
Combined Application ◽  
Randomized Design ◽  
Study Results ◽  
Nutritional Qualities ◽  
Four Levels ◽  
Major Nutrients

A pot experiment was conducted in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh, to examine the effect of different levels of Zn and B on the major biochemical and nutritional quality of tomato fruits. The experiment was laid out in a completely randomized design (CRD) with 4 replications along with two treatment factors viz., (i) four levels of Zn- like control, Zn @ 4.0 kg ha-1, Zn @ 6.0 kg ha-1 and Zn @ 8.0 kg ha-1; and (ii) three levels of B- like control, B @ 2.0 kg ha-1 and B @ 3.0 kg ha-1. Among the biochemical parameters- lycopene, total acidity, and vitamin C contents in tomato fruits ranged from 3.24-3.76 mg 100 g-1, 0.26-0.36%, and 21.76-26.40 mg 100 g-1 samples, respectively. The study results revealed that the highest amounts of lycopene and vitamin C were recorded from B @ 2.0 kg ha-1. Combined Zn and B applications showed a highly significant effect on total acidity, lycopene, and vitamin C contents of tomato fruits. Similarly, the application of Zn and B alone or in combination significantly affected the major nutrient contents of tomato fruits. The highest amounts of Ca, Mg, Na, K, and P were obtained from the application of Zn @ 4.0 kg ha-1, while the maximum amounts of Fe and Zn were recorded from Zn @ 8.0 kg ha-1 treatment. However, the application of B alone significantly reduced the contents of Ca, P, S, Fe, and Zn in tomato fruits while the contents of Mg, K, and Na remained almost unchanged. Finally, the study results concluded that the combined application of Zn and B (@ 4.0 and 2.0 kg ha-1, respectively) had a significant effect on major nutrients and biochemical characters of tomato fruits.

scholarly journals Effect of Manihot esculenta Edible Coating Blended with African Basil (Ocimum gratissimum) Essential Oil on the Shelf-Life of Mango Fruits

2021 ◽  
pp. 17-30
Author(s):  
Decrah M. Nyangena ◽  
Phanice T. Wangila ◽  
Jackson K. Cherutoi
Keyword(s):  
Weight Loss ◽  
Essential Oil ◽  
Vitamin C ◽  
Shelf Life ◽  
Room Temperature ◽  
Edible Coating ◽  
Soluble Solids ◽  
Chemical Parameters ◽  
Ocimum Gratissimum ◽  
Physico Chemical

Aims: To establish the shelf -life of mango fruits coated with unmodified and modified M. esculenta edible coating at low (4 ± 2°C) and room temperature (23 ± 2°C) conditions. Place and Duration of Study: The study was done at Moi University, School of Sciences and Aerospace studies, Department of Chemistry and Biochemistry between January 2021 and June 2021. Methodology: Ocimum gratissimum leaves essential oils was obtained by hydro-distillation method using Clevenger apparatus. Preparation and modification of the coating were homogenized at 70 ± 2 °C. Physico-chemical parameters including weight loss, titratable acidity (TA), Vitamin C concentration, total soluble solids (TSS), and pH were used to establish the fruits’ shelf-life. Results: The modified M. esculenta (cassava) starch coating (1.5%) treatment, their interactions and storage duration significantly affected the physico-chemical parameters of mango fruits. The modified coating-maintained TA 0.66%, 0.87%, reduced weight loss by 27.81%,14.62%, delayed the increase of TSS 7.50%, and pH 5.20, 4.93 while retaining the vitamins C 8.13 mg/100g, 15.09mg/100g concentration up to eighteen days and twenty-seven day of storage at 23 ± 2°C and 4 ± 2°C respectively. The distilled water treatment (control) reduced TA to 0.11%, 0.23%, increased weight loss to 47.12%, 24.21%, TSS 20.22%, 17.41%, and pH 8.21, 5.20 while retaining the vitamin C 3.74 mg/100 g, 8.13 mg/100 g concentration at 23 ± 2°C and 4 ± 2°C respectively. Conclusion: Results of the present study showed that M. esculenta edible coating incorporated with O. gratissimum essential oil extended the shelf life of mangoes up to eighteen and twenty-seven days of storage at room temperature (25 ± 2°C) and low temperature (4 ± 2°C), respectively. This treatment might be an effective farm-based post-harvest treatment in prolonging the shelf life of fresh produce while maintaining their physico-chemical parameters.

scholarly journals PREPARATION AND ANTIFUNGAL ACTIVITIES OF CHITOSAN FROM APPLE-SNAIL (Pila ampullacea) SHELLS AS PRESERVING AGENT FOR POSTHARVEST PODANG MANGO (Mangifera indica L.) cv Podang

2021 ◽  
Vol 2 (2) ◽  
pp. 66-78
Author(s):  
Riska Surya Ningrum ◽  
Aisyah Ramadani ◽  
Reny Rosalina ◽  
Desy Yustiyani ◽  
Rio Altha Reyzando
Keyword(s):  
Weight Loss ◽  
Vitamin C ◽  
Shelf Life ◽  
Water Content ◽  
Fruit Quality ◽  
Mangifera Indica ◽  
Negative Control ◽  
Aspergillus Ochraceus ◽  
Apple Snail ◽  
Chitosan Coating

Podang mango, an endemic mango from Kediri, has a short post-harvest shelf life that accelerates by physiological factors and pathogenic fungal contamination. Chitosan reported as an active compound for coating. The apple-snail was reported to contain chitosan in its shell. The purposes of this study are to synthesis chitosan from Pila ampullacea, examine anti-fungal activities to Fusarium oxysporum and Aspergillus ochraceus, and verify the effect of chitosan coating on shelf life and quality of Podang mango. The effect of chitosan coating on fruit quality was analyzed using three treatments which were negative control, chitosan, and chitosan-gelatin with 3 replications. The parameters measured were color, texture, aroma, water content, vitamin C, and weight loss. Results showed that chitosan synthesized from P. ampullacea had 53.56 degrees of deacetylation. Antifungal activity test of chitosan 2% had the highest inhibitory activity against F.oxysporum and A.ochraceus growth with 14.46 mm and 10.33 mm inhibition zone. Coating with chitosan statistically affected fruit quality for 14 days of storage (sig <0.05). Chitosan-gelatin coating is the best treatment in reducing weight loss (8.97%), maintain aroma (sweet fragrance), texture (soft), water content (84%), and vitamin C (0.182%), while the color (reddish yellow) was more influenced by Chitosan coating. Chitosan coated with gelatin is recommended for application on Podang mangoes.

Extension of Shelf-Life of Tomato Using Irradiated Chitosan and its Physical and Biochemical Characteristics

2018 ◽  
Vol 67 ◽  
pp. 16-23
Author(s):  
Nehar Parvin ◽  
M.A. Kader ◽  
Roksana Huque ◽  
M.E. Molla ◽  
Mubarak A. Khan
Keyword(s):  
Shelf Life ◽  
Room Temperature ◽  
Storage Period ◽  
Chitosan Solution ◽  
Natural Preservative ◽  
Biochemical Characteristics ◽  
Post Harvest ◽  
Chitosan Coating ◽  
And Control ◽  
Total Bacteria

The effect of irradiated chitosan coating on post-harvest preservation of tomato was observed in this study. Irradiated chitosan (40 kGy) solution of various concentrations (500, 750, 1000, 1500 and 2000 ppm) were applied on post-harvest preservation of tomato. Both chitosan treated and untreated (control) tomato were stored at room temperature in open and zip bag conditions. The effect of coating of various chitosan solutions on tomato were observed during storage period. The percentage of weight loss and spoilage rate of the preserved and control tomato samples were investigated. Several parameters (such as total bacteria count, total mold count, moisture, ash, acidity, vitamin C, sugar, protein and fat) were analyzed for irradiated chitosan coated tomato in open condition after 3-weeks storage period. In addition, the same parameters were also analyzed for control tomato. Considering all parameters, the results revealed that 1500 ppm chitosan solution performed better in extending the shelf- life of tomato as compared to the control and other treated samples. Thus, this observation recommend that irradiated chitosan coating have the potential to be used as natural preservative to maintain quality and extending shelf-life of tomato.

scholarly journals Influence of ethephon on ripening and quality of winter tomato fruit harvested at different maturity stages

2016 ◽  
Vol 40 (4) ◽  
pp. 567-580 ◽  
Author(s):  
M Moniruzzaman ◽  
R Khatoon ◽  
MFB Hossain ◽  
MT Rahman ◽  
SN Alam
Keyword(s):  
Weight Loss ◽  
Vitamin C ◽  
Shelf Life ◽  
Agricultural Research ◽  
Tomato Fruit ◽  
The United States ◽  
Research Centre ◽  
Tomato Fruits ◽  
Maturity Stages ◽  
Green Stage

An experiment taking tomato fruits (cv. BARI Tomato-14) of three maturity stages (mature green stage, breaker stage and half ripen stage) and four ethephon levels [control (distilled water spray), 500, 750 and 1000 ppm] was carried out at the laboratory of plant physiology section of Horticulture research centre, Bangladesh Agricultural Research Institute) during February 14, 2013 to February 27, 2012 to find out the suitable stage of fruit maturity for post harvest application of ethephon (ethrel) for tomato ripening. The source of ethrel was Spectrum (ethephon 39%) manufactured in the United States of America. Treatment with 500 - 1000 ppm ethephon hastened ripening of tomato by 4 days in mature green stage but by 2 and 4 days in breaker stage tomatoes when compared with control fruits. The highest value of rotting was shown by half ripen tomatoes. The 1000 ppm ethrel gave the maximum rotting irrespective of maturity stages. However, the maximum weight loss and shelf life were found in green mature tomatoes. The shelf life of tomato fruits of green mature and breaker stage tomatoes treated with 500 and 750 ppm was also high. The percentage of rotting and weight loss was increased with gradual advancement of time. The highest value of weight loss and shelf life was recorded in green mature tomatoes without ethephon and with 500 and 750 ppm ethephon treatment. The highest value of vitamin-C, TSS and titrable acidity were shown by half ripen and pH by green mature tomatoes at different days of storage. The ethephon concentration of 750 ppm the gave maximum vitamin-C at 6 and 9 days of storage but 1000 ppm gave the maximum TSS% followed by 750 ppm ethephon. The ethephon @ 750 ppm produced the maximum TSS at 9 day of storage in mature green tomatoes but in breaker and half ripen stage tomatoes 750 ppm ethephon gave TSS identical to 1000 ppm at different days of storage. The residue level of ethrel in tomato fruits treated with all ethephon concentrations at 3 and 5 days of storage was below 2 mg/kg which is safe for human health. Therefore, treated tomatoes should be consumed after 3 days of ethephon application.Bangladesh J. Agril. Res. 40(4): 567-580, December 2015

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