Effect of Meadowsweet Flower Extract-Pullulan Coatings on Rhizopus Rot Development and Postharvest Quality of Cold-Stored Red Peppers
Abstract
:1. Introduction
2. Results and Discussion
2.1. The Effect of Coatings on the Inhibition on Disease Development
2.2. The Effect of Coatings on Pepper Quality
2.2.1. General Appearance and Evaluation of the Microstructures of Coated Peppers
2.2.2. Changes in the Color, Total Soluble Solids (TSS) and Weight Losses of the Peppers
Color Parameter | Control | P | P + weEMF | P + eEMF |
---|---|---|---|---|
L * | 33.3 ± 2.4 yz | 33.6 ± 1.2 yz | 33.1 ± 1.6 yz | 30.9 ± 2.2 y |
a * | 22.2 ± 3.7 y | 22.0 ± 2.5 y | 19.0 ± 2.4 z | 18.6 ± 1.8 zv |
b * | 12.4 ± 2.8 y | 11.9 ± 1.0 yz | 10.0 ± 1.3 v | 9.6 ± 1.3 v |
Storage Day | Control | P | P + weEMF | P + eEMF |
---|---|---|---|---|
2 | 3.2 ± 0.2 a | 2.62 ± 0.16 b | 1.81 ± 0.14 c | 1.51 ± 0.20 c |
4 | 3.9 ± 0.1 a | 3.50 ± 0.18 b | 3.31 ± 0.22 b | 3.3 ± 0.20 b |
6 | 5.13 ± 0.12 a | 4.4 ± 0.12 b | 4.37 ± 0.20 b | 4.45 ± 0.23 b |
8 | 5.42 ± 0.20 a | 4.60 ± 0.17 c | 4.90 ± 0.17 b | 4.82 ± 0.21 b |
10 | 6.50 ± 0.10 a | 5.81 ± 0.31 b | 5.93 ± 0.30 b | 6.01 ± 0.12 b |
12 | 6.91 ± 0.09a | 6.17 ± 0.20 b | 6.61 ± 0.21 b | 6.51 ± 0.17 b |
14 | 7.94 ± 0.10 a | 7.22 ± 0.12 b | 7.37 ± 0.17 b | 7.50 ± 0.21 b |
16 | 8.50 ± 0.30 a | 7.63 ± 0.10 c | 8.05 ± 0.15 b | 8.03 ± 0.20 b |
18 | 8.90 ± 0.10 a | 8.39 ± 0.13 b | 8.50 ± 0.21 b | 8.51 ± 0.24 b |
20 | 9.91 ± 0.11 a | 9.31 ± 0.15 b | 9.41 ± 0.20 b | 9.60 ± 0.22 b |
22 | 10.78 ± 0.15 a | 10.22 ± 0.20 b | 10.22 ± 0.25 b | 10.42 ± 0.19 b |
24 | 11.63 ± 0.12 a | 11.34 ± 0.20 b | 10.90 ± 0.12 c | 10.62 ± 0.11 d |
26 | 12.79 ± 0.22 a | 12.07 ± 0.15 b | 11.62 ± 0.15 c | 11.55 ± 0.20 c |
28 | 13.12 ± 0.20 a | 12.20 ± 0.12 b | 12.25 ± 0.10 b | 12.63 ± 0.11 c |
30 | 13.55 ± 0.13 a | 12.61 ± 0.16 b | 12.80 ± 0.13 b | 12.70 ± 0.12 b |
Coating Type | Regress Equation y = ax + b | Storage Time (days) | ||
---|---|---|---|---|
R2 | a | b | ||
Control | 0.973 | 0.402 | 1.952 | 6.3 |
P | 0.980 | 0.392 | 1.477 | 7.7 |
P + weEMF | 0.982 | 0.396 | 1.413 | 7.8 |
P + eEMF | 0.978 | 0.400 | 1.363 | 7.8 |
2.3. Discussion
3. Experimental Section
3.1. Materials
3.2. Coat-Forming Solutions
3.3. Fungal Inoculum
3.4. Fruit Inoculation and Coating Application
3.5. Evaluation of Quality Parameters
3.5.1. Pepper Coating and Storage
3.5.2. Microstructure Observations
3.5.3. Color Determination
3.5.4. Pepper Weight Loss and Total Soluble Solids Evaluations
3.5.5. Determine the Prolongation of Postharvest Life of Pepper
3.6. Statistical Analysis of the Results
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Synowiec, A.; Gniewosz, M.; Kraśniewska, K.; Chlebowska-Śmigiel, A.; Przybył, J.L.; Bączek, K.; Węglarz, Z. Effect of Meadowsweet Flower Extract-Pullulan Coatings on Rhizopus Rot Development and Postharvest Quality of Cold-Stored Red Peppers. Molecules 2014, 19, 12925-12939. https://doi.org/10.3390/molecules190912925
Synowiec A, Gniewosz M, Kraśniewska K, Chlebowska-Śmigiel A, Przybył JL, Bączek K, Węglarz Z. Effect of Meadowsweet Flower Extract-Pullulan Coatings on Rhizopus Rot Development and Postharvest Quality of Cold-Stored Red Peppers. Molecules. 2014; 19(9):12925-12939. https://doi.org/10.3390/molecules190912925
Chicago/Turabian StyleSynowiec, Alicja, Małgorzata Gniewosz, Karolina Kraśniewska, Anna Chlebowska-Śmigiel, Jarosław L. Przybył, Katarzyna Bączek, and Zenon Węglarz. 2014. "Effect of Meadowsweet Flower Extract-Pullulan Coatings on Rhizopus Rot Development and Postharvest Quality of Cold-Stored Red Peppers" Molecules 19, no. 9: 12925-12939. https://doi.org/10.3390/molecules190912925