• Korean Journal of Medicinal Crop Science
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• v.26 no.4
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• pp.291-295
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• 2018

Background: The use of Rehmannia glutinosa of the family Scrophulariaceae, in traditional medicine is well known. This study was conducted to elucidate the effect of air curing of the seed rhizome of R. glutinosa on its storability and yield. Methods and Results: The root of the R. glutinosa cultivar (Dagang) was harvested in at the end of November. The seed rhizomes were air cured for one to seven days. They were subsequently wrapped with newspaper and further stored in a plastic container at $1^{\circ}C$. It was observed that the weight loss and decay rates were significantly lower in the air cured seeds than in the untreated ones. Moreover, the decay rate of the control was approximately 50%, 120 days after storage. However. the decay rate of all the air cured treatment groups was less than 1%. Additionally, air curing led to an increase in the germination rate of the seeds and the root yield when compared with the untreated groups. Taken together, the ideal treatment period for air curing was found to be 3 days. Under these conditions, the germination rate and yield were 88.7% and 2,185 ㎏/10a, respectively. Conclusions: This study successfully demonstrated that the air curing of seed rhizomes can lead to a considerable increase in the storability and yield of R. glutinosa.

• Food Science and Preservation
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• v.31 no.1
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• pp.15-23
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• 2024

Storage temperature profoundly influences the storability of paprika (Capsicum annuum L.). However, the impact of storage temperature on storability and its association with the antioxidant activity of paprika are poorly understood. In this study, we evaluated the storage attributes, activity, and gene expression levels of antioxidant enzymes in paprika stored at 4, 10, and 20℃ for 14 d and then at 20℃ for an additional 5 d (14+5 d; retail conditions). Storage at 10℃ effectively mitigated pitting, stalk browning, shriveling, and decay while significantly enhancing the marketability of paprika. The fruits stored at 4℃ were prone to pitting, whereas those stored at 20℃ were sensitive to stalk browning and decay. Moreover, paprika stored at 10℃ exhibited higher 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) activity and total phenolic content than those stored at 4 and 20℃, indicating improved antioxidant activity. Additionally, storage at 10℃ upregulated the expression levels of the antioxidant genes, catalase and peroxidase, suggesting the mechanism underlying the quality enhancement of paprika. Our findings suggest that paprika storage at 10℃ alleviates chilling injuries, preserves the quality and marketability, and enhances the antioxidant potential of paprika. These findings provide insights into how temperature influences the quality and minimizes post-harvest losses during the storage and distribution of paprika.

• Journal of Bio-Environment Control
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• v.18 no.1
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• pp.51-59
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• 2009

Bulb onion cultivation area has been restricted in southern part of Korea to avoid blotting and bulb division. The traditional culture method is transplanting bare-rooted plantlet into the field at the end of summer and harvesting at the beginning of next summer. The hot weather and weak plantlets occasionally causes unstable supply of onions in autumn. In order to enlarge cultivation area and to reduce culture period, long nursery system using plug tray and spring transplanting was tried. Forty cultivars collected from Korea and Japan were nursed using 200-plug tray and transplanted to the field in spring. Marketable yield was not related to the seedling size but lodging time. Cultivar of 'Hamasodachi' was lodged early and resulted low marketable yield. Cultivar of 'Cheonjudaego' was not lodged and yielded high but not in accordance with storability. Generally early lodged cultivars showed low storability. In order to avoid rainy harvesting season, cultivars requires excessive long time for lodging is not recommended for spring culture. Using plug nursery and spring transplanting, we successfully produced marketable onions in 3 months. But immediate using of the harvested onion is recommended. The storability of produced onions showed different result among cultivars, storage of spring onion was not recommended.

• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.4
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• pp.761-768
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• 2019

In this paper, the aim is to develop plasma heater products combining the sterilization and purification functions of low-temperature plasma lamp method with the function of vertical heating system using wavelengths of vacuum magnetic (VU). Through this process, the government aims to improve the cultivation environment of crops in greenhouses or facility houses and to increase their storage capacity by increasing the freshness of stored crops such as free-temperature storage. In addition, real-time monitoring technologies will be incorporated that will enable users to identify and respond to changes within greenhouses in real time by utilizing ICT technologies.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.28 no.1
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• pp.39-46
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• 2022

This study compared the effects of cocopeat and perlite growth media on the storability and quality of sweet pepper fruit stored using modified atmosphere packages (MAP) and carton boxes. The fruits were stored at 8℃ for 35 and 30 days, respectively. Perlite-grown fruits had a significantly lower size at harvest due to the medium's inability to hold plenty of water during the growing stage. Contrary to what is expected for small fruits, the result shows box-stored perlite-grown fruits to have lower weight loss and a longer shelf life than cocopeat-grown fruits, while MAP fruits have indifference. Perlite fruits also had a higher quality in terms of dry matter, soluble solids, and vitamin C, while box-stored fruits had a better visual quality. As expected, respiration and ethylene production rates were high, and fruits had similar after-storage firmness values. Based on the findings, perlite-grown sweet pepper fruits may have a better quality and give preference in a box storage condition.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.8
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• pp.392-402
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• 2018

Citrus fruits can be classified as field citrus, greenhouse citrus, citrus produced by rain proof cultivation and late-harvested citrus such as Hallabong, Chunhaehyang, and Jinjihyang according to cultivation method or variety in Jeju province of Korea. The consumption of late-harvested citrus has been increasing steadily since 1990 because the sugar content of the fruits is ordinary higher than field citrus. The cultivation land of citrus produced by rain proof cultivation has been also enlarged continuously aided by Korean government support program and quality increasing effect of this cultivation method. However, the cultivation land of field citrus has been decreasing since 2010. In spite of such a decrease of cultivation land, recently the price of field citrus rather declined according to increasing of yield per 10a. For the estimation and forecast of the long-term supply-demand model in the field citrus, we constructed a partial balance model for the individual field citrus and estimated individual equation in each item's model by using the econometric method. As a result of the production storage scenario analysis, the cultivation area is expected to store 5%(14.49ha), 10%(14.97ha). 15%(15.50ha) of citrus production in 2027. This study reviews the structure of storage, and storability in Jeju field citrus and suggest several policy implications.

• Journal of Bio-Environment Control
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• v.4 no.1
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• pp.74-79
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• 1995

This study was made to investigate the effects of soil moisture content according to irrigation methods on the storability and quality of cucumber. The fresh weight loss of cucumber fruit harvested in drip irrigation plot was more than that in conventional irrigation plot at both 13$^{\circ}C$ and 24$^{\circ}C$ storage temperature. Dry weight ratio decreased during storage, and was higher in conventional irrigation plot than drip irrigation plot both 13$^{\circ}C$ and 241 storage. The decrease of dry weight ratio was higher at 24$^{\circ}C$ than 13$^{\circ}C$. Vitamin C was not influenced by soil moisture content, but decreased during storage at 13$^{\circ}C$ and 24$^{\circ}C$ The decrease of vitamin C at 24$^{\circ}C$ in 8 days after storage was twice as much at 13$^{\circ}C$. Firmness was measured differently in two parts of cucumber ; fruit stalk and blossom part. The firmness of fruit stalk part was higher than that of blossom part. This phenomena was observed continuously at until final day at 13$^{\circ}C$ and 24$^{\circ}C$ storage. But the difference of firmness was not showed in soil moisture content. Vitamin C, firmness and other quality characteristics were not influenced by soil moisture content during cultivation. The different soil moisture content according to irrigation methods did not affect the storability and quality of cucumber.

• Journal of Bio-Environment Control
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• v.9 no.1
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• pp.40-46
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• 2000

This study was conducted to investigate the comparison of storability on film sources and storage temperature and determine the proper condition for fresh Japanese mint in U storage. The fresh weight in storage was maintained well more than 40$\mu$m ceramic film(CE 40) thickness. The carbon dioxide, ethylene, and acetaldehyde contents in 80$\mu$m ceramic film(CE 80) was higher than those in CE 40. Those were not different among the storage temperatures, rather, those in 3$^{\circ}C$ and 1$^{\circ}C$ storage were higher than those in 1$0^{\circ}C$. The chlorophyll contents loss was promoted by above 5％ water loss and 0.5ppm ethylene contents, but mote than 4％ carbon dioxide contents restrained from degrading chiorophyll. The storage period in 3$^{\circ}C$ was 30 days that was twice longer than those in other storage temperatures. The visual quality was higher in CE 40 at 3$^{\circ}C$, and this plot was lowest in ion leakage that was shown the degree of chilling injury. It was concluded that storage temperature of at 3$^{\circ}C$ and packaged ceramic 40$\mu$m film to increase storability of Japanese mint would be favorable.

• Journal of Bio-Environment Control
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• v.16 no.4
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• pp.420-425
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• 2007

This study was conducted to find out the effect of vitamin C treatments on the storability of several baby vegetables; endive, green romaine lettuce, pak-choi, red romaine, lollo rosa, and ssamchoo. The vitamin C was treated by the foliar spray which was carried out 3 times before harvest or dipping in vitamin C solution for 5 minutes after harvest. The vitamin C contents of 6 different baby vegetables were higher in vitamin C treatments than control, whereas the difference of vitamin C content between treatments was disappeared after storage. The fresh weight of ssamchoo and lollo rosa lettuce treated by vitamin C was maintained higher than that of control. There was not significant difference in visual quality among treatments, though some of baby vegetables treated by washing with vitamin C showed better visual quality than the others. The contents of carbon dioxide, oxygen and ethylene in MAP with baby vegetables did not show any difference among treatments. As the result, high concentrated vitamin C treatment, such as the foliar spray and washing (dipping) had a role of increasing functionality, but the enhanced functionality, high vitamin C, did not affect storability in baby vegetables.

• Journal of Bio-Environment Control
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• v.17 no.4
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• pp.319-324
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• 2008

The sweet pepper (paprika) is one of the most important exported vegetable crops in Korea. This study evaluated the storability of sweet pepper fruits between 2 cultivars with different maturities under different storage conditions. The sweet peppers ('Special' and 'Fiesta') were grown in a rockwool hydroponic system, and harvested two different maturities: half-maturity and full-maturity levels. The sweet pepper fruits were stored in MA(non-ventilated) and non-MA(ventilated) conditions at 4 and $9^{\circ}C$ for 20 days. The storability of sweet pepper fruit was the highest in $4^{\circ}C$ MA conditions that remained 5% carbon dioxide and 10% oxygen during the storage. The ethylene concentration in MA condition showed $2{\sim}8{\mu}l/l$ regardless of storage temperatures, cultivars and maturities. The fruits packaged with non-ventilated film, showed lower weight loss, and higher firmness, and there was no different about decay ratio compared to the fruits packed ventilated film. The coloration of semi-matured fruit that colored 50% before storage progressed faster in non-ventilated packaging condition at $9^{\circ}C$, but their color did not changed as same as level of full-matured fruit. The electrolyte leakages and respiratory rate that estimated degree of chilling injury was highest in non-MA(ventilated) conditions of 'Special' full matured fruit placed at room temperature for 3 days following storage at $4^{\circ}C$ for 20 days. It may be suggested that sweet pepper fruit packed sealed (non-ventilated) film and stored at non-chilling temperature can be maintained better quality for long term storage.