• Journal of Biosystems Engineering
• /
• 제36권5호
• /
• pp.361-368
• /
• 2011

The amount of export of paprika has been increased rapidly in recent years. Therefore, its cultivation area has greatly increased in Korea according to current consumer's attraction. Moreover, it becomes one of the major exporting products while it recorded 53 million dollars, in 2009 resulting in 40% of the total vegetables export. Most of the products are exported to Japan, but it is necessary to prolong the quality preservation periods to export paprika to nations like U.S.A. or EU. However, to encourage an export to many countries, washing and disinfection became more important to deal with longer transportation and medical inspection. The non-chemical use is very important due to stronger regulation of safety to agricultural production. Accordingly, this study was performed to determine the optimum conditions and develop a prototype washing machine, hot water washing of paprika. The results were as follows : The working performance of the prototype was 938 kg/hr, and which was 1.5 times higher than the conventional air gun type washing machine. The operation cost of prototype was 30 won/kg, and 56% of the cost was reduced when compared with air gun type washing machine.

• 한국유기농업학회지
• /
• 제23권1호
• /
• pp.133-148
• /
• 2015

Although several adverse effects have been increased in recent years, synthetic agro-chemicals have been widely used to control diseases on paprika. This research was conducted to isolate and to characterize the antagonistic microorganism to control major paprika diseases, gray mold rot, fruit and stem rot, phytophthora blight, sclerotium rot, and wilt disease. Analysis of the fatty acid and analysis of the 16S rDNA gene sequence revealed that YKJ2 isolated in this research belongs to a group of Burkholderia cepacia. Specially, 16S rDNA gene sequence of YKJ2 showed 99% of sequence similarity with B. cepacia. Observation through the optical microscope revealed that YKJ2 was effective on suppression of the spore germination and the hyphal growth of pathogens. YKJ2 treatment on pathogens induced marked morphological changes like hyphal swelling and degradation of cell wall. In the case of phytophthora blight, the zoosporangium formation was restrained. On the basis of the results of this study, we propose that an antagonistic microorganism, B. cepacia, found in this study naming as "B. cepacia strain YKJ2" and has great potential as one of biological control agents against major diseases of paprika.

• 원예과학기술지
• /
• 제33권5호
• /
• pp.633-637
• /
• 2015

Cucumber and paprika transplants were stored at 9, 12, 15, and $18^{\circ}C$ under dark conditions for 15 days and then grown in a greenhouse for 14 days after transplanting. To determine the effects of low storage temperature and long-term continuous darkness on the quality and vigour of transplants, we investigated the quality of transplants during storage and the growth of stored transplants after transplanting. In cucumber transplants, decreasing storage temperature reduced stem elongation and decrease in SPAD value. The quality of cucumber transplants stored at $9^{\circ}C$ was well preserved during storage, but they did not survive after transplanting due to chilling damage. Growth and development after transplanting were significantly greater when cucumber transplants were stored at $12^{\circ}C$. In paprika transplants, the quality of transplants did not significantly differ before and after storage. After transplanting, there was no significant difference in the survival rate and growth, but the number of flower buds was greater in the paprika transplants stored at lower temperatures (9 and $12^{\circ}C$). These results indicate that the responses of transplants to the conditions of low temperature and darkness differed between cucumber and paprika, and storage temperature in darkness must be controlled carefully considering species-specific responses to reduce quality deterioration during storage and improve the recovery of transplants after transplanting.

• 방사선산업학회지
• /
• 제5권4호
• /
• pp.383-391
• /
• 2011

This study was conducted to investigate the applicability of gamma irradiation for improving the quality of paprika and Japanese apricot extract-treated nitrite free pork jerky. Pork jerky was gamma-irradiated at 0, 3, 5, 7 and 10 kGy and physiochemical properties such as proximate composition, 2-thiobarbituric acid (TBARS) values, color stability, texture, and sensory property were then evaluated. The results showed that the treatment of paprika and Japanese apricot extract to the pork jerky increased Hunter color value and texture property and at the same time decreased TBARS values. When gamma irradiated, natural pigment extract-treated pork jerky did not produce any change in its proximate composition (moisture, crude protein, crude lipid contents), and TBARS values. However, the redness (a-value) of pork jerky increased as the irradiation dose increased, whereas shear force of pork jerky was decreased. Sensory result showed that gamma irradiation induced to decrease the sensory scores. Therefore, these results suggest that gamma irradiation and the addition of paprika and Japanese apricot extracts could be an effective mean to improve color and texture of restructured pork jerky without use of nitrite.

• 생물환경조절학회지
• /
• 제21권3호
• /
• pp.220-227
• /
• 2012

폐쇄형 묘생산 시스템에서 청색LED, 적색LED, 백색형광등을 인공광원으로 이용한 가운데 파프리카의 육묘시 생장 특성과 정식 후 생장 및 초기 수량을 분석하고자 본 연구가 수행되었다. 폐쇄형 시스템에서 파프리카 육묘용 환경조건은 광주기 16/8h, 평균 PPF $204{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$, 기온 26/$20^{\circ}C$, 상대습도 70%이었다. 육묘 후 21일째에 백색형광등과 LED 하에서 생장된 파프리카 묘의 엽장, 엽폭, 엽면적 등 잎 관련지표뿐만 아니라 지상부 생체중과 건물중, 엽록소함량 등이 자연광 처리구에 비해서 크게 나타났다. 청색 LED, 적색LED 및 자연광 처리구에서의 엽면적은 대조구인 형광등 처리구와 비교할 때 각각 63%, 63%, 28%에 해당하였다. 또한 청색LED, 적색LED 및 자연광 처리구의 지상부 건물중은 각각 대조구의 64%, 50%, 22%로 나타났다. 정식 후 18일째에 엽수는 대조구에서 44매로 가장 크게 나타났다. 적색LED, 청색LED 및 자연광 처리구의 엽수는 대조구에 비해서 각각 86%, 81%, 48%로서 정식 시기와 비교할 때 엽수의 차이가 줄어들었다. 정식 후 114일째에 초장은 청색LED와 적색LED 처리구에서 상대적으로 작게 나타났다. 이러한 결과는 단색LED 하에서 육묘된 파프리카의 줄기 신장이 정식 후에 억제된 것으로 판단된다. 초기 4주 동안 수확된 파프리카는 청색LED 3.5개/plant, 적색LED 3.3개/plant, 자연광 1.0개/plant으로서 대조구 2.2개/plant에 비해서 각각 159%, 150%, 45%로 나타났다. 초기수량은 적색LED 453g/plant, 청색LED 403g/plant, 자연광 101g/plant으로서 대조구 273g/plant와 비교할 때 각각 166%, 148%, 37%로 나타났다. 한편 적색LED 처리구에서의 평균 중량은 136g으로서 다른 처리구와 비교할 때 상대적으로 큰 과실이 생산되었다. 한편 정식 후 온실에서의 재배기간이 길어짐에 따라 인공광 처리구와 자연광 처리구에서 수량 차이가 없었다. 이러한 결과를 종합하면 LED 또는 형광등을 인공광원으로 이용한 조건에서 육묘된 파프리카의 정식 후 초기 생육이 양호하였으며, 초기 수확이 자연광 처리구에 비해서 1주 정도 빠르게 이루어졌음을 알 수 있다. 따라서 LED 또는 형광등과 같은 인공광원이 파프리카 육묘에 이용될 경우 묘소질의 향상, 조기 수확 및 초기 수량의 증대가 기대된다.

• 한국포장학회지
• /
• 제28권2호
• /
• pp.115-125
• /
• 2022

파프리카의 다양한 온도 조건(5℃, 10℃, 20℃)에서 포장을 통한 선도 유지 효과를 검토하고자 하였다. 파프리카는 10℃정도에서 저장·유통이 적정한 것으로 알려져 있으나, 국내에서 유통은 상온에서 특별한 온도 관리 없이 이루어지고 있어 선도 유지를 위한 온도관리가 요구되고 있다. 파프라카 적색과인 '나가노알제트(Nagano RZ)' 등을 이용하여 온도에 따라 나이론 필름 포장 여부에 따른 생체중량 감소, 외관 변화 등의 품질 특성을 조사하였다. 포장을 통해서 각 온도 별로 외관에서는 포장을 한 것이 무포장보다 변화폭이 적어, 상품성 보존에 다소 효과적인 것으로 나타났으며, 온도에 따라서는 5℃와 10℃에서는 포장을 통해 선도 유지에 효과적으로 보였다. 20℃에서 필름 포장 여부에 관계없이 저장 중에 상품성이 빠르게 낮아지는 경향을 보였다. 생체중량 감소 정도는 필름 포장 여부에 따라 차이가 커서 무포장이 포장한 것보다 감소 정도가 컸으며, 온도에 따라서는 20℃가 변화폭이 컸으며, 5와 10℃순으로 나타났다. 가용성고형물과 색소, 경도 등은 저장 온도와 필름 포장 여부에 따라 복합적으로 영향을 받아 차이를 보이는 것으로 나타났다. 파프리카는 20℃보다 저장 온도가 낮은 5℃도나 10℃가 선도 유지에 효과적이었으며, 포장을 통해 무포장 보다 외관적 선도에 더욱더 품질을 유지할 수 있는 것으로 나타났다. 본 실험에서는 국내 유통환경에서 파프리카를 보다 상품성을 유지할 수 있는 선도를 보존하기 위해 포장이 필요하며, 효과적인 포장 방법에 대해서는 지속적인 탐색이 필요할 것으로 보인다.

• 한국식품과학회지
• /
• 제52권4호
• /
• pp.377-384
• /
• 2020

Paprika is a popular vegetable with high visual appeal and desirable flavor, the health benefits of which are increasingly attracting interest. In this study, the physical qualities, antioxidant content, and activities of six mini paprika cultivars were investigated. Both the edible part (flesh) and the by-products were studied. The average total phenolics and total antioxidant activities were higher in the flesh than in the by-products. The total flavonoids of the flesh and the byproducts were 16.41 and 37.80 mg/100 g FW, respectively. "YW glory" and "Raon yellow" flesh had the highest (245.52 mg/100 g FW) and lowest (179.96 mg/100 g FW) total phenolics among the six cultivars, respectively. However, the "RD glory" cultivar showed the highest total phenolic content (232.70 mg/100 g FW) among the by-product samples. The total phenolics in the flesh and by-products were highly correlated to the ABTS radical scavenging activity, with R=0.961 and 0.984, respectively.

• Food Science and Biotechnology
• /
• 제17권6호
• /
• pp.1383-1386
• /
• 2008

This study was conducted to examine the quality characteristics of soybean curd containing red paprika juice (RPJ) and green paprika juice (GPJ). The proximate compositions of RPJ showed higher levels of ash, carbohydrate, and vitamin C than GPJ. The yield of soybean curd was not significantly different with the level of RPJ and GPJ. However there was a significant decrease in the pH and an increase in the acidity with the addition of RPJ and GPJ. The L, a, and b values of soybean curd containing RPJ and the L value of soybean curd containing GPJ were significantly different. The hardness and chewiness of soybean curd containing RPJ and GPJ increased significantly with the level of juice.

• International Journal of Industrial Entomology and Biomaterials
• /
• 제31권2호
• /
• pp.103-106
• /
• 2015

The oriental tobacco budworm, Helicoverpa assulta (Lepidoptera: Noctuidae), is classified as a quarantine pest that must be controlled for the exportation of Korean paprika to the USA. We performed a confirmatory test of gamma irradiation against the last-instar larvae and pupae of H. assulta in paprika. Previous, small-scale gamma irradiation at a dose of 100 Gy to the last-instar larvae allowed emergence of adults, though they were abnormal, but 200 Gy prevented adult emergence completely. For pupae, irradiation of 5- to 6-day-old pupae with 300 Gy prevented normal emergence completely. To gather confirmatory data applicable to phytosanitary quarantine regulations, larvae and pupae were placed inside paprika in a box and were irradiated with 200 Gy and 300 Gy, respectively. After irradiation with 200 Gy (measured doses 170-199 Gy) of 2,186 individuals of the last-instar larvae, 10.84% survived, but either formed abnormal pupae (7.57%) or died during the pupal stage (3.27%), resulting in no emergence of normal adults. For pupae, the dose of 300 Gy (measured doses 276-319 Gy) given to 1,200 pupae allowed 10.75% to survive and 9.17% to emerge with deformity. However, 1.58% of irradiated pupae emerged normally, requiring an increased dose for complete prevention of normal emergence. Subsequently, an increased dose of 400 Gy (measured doses 340-402 Gy) to 1,005 pupae allowed 88.35% to emerge, but all emerged with deformity. Thus, irradiation treatment with a minimum dose of 400 Gy will provide quarantine security for all premature H. assulta in exported paprika.

• 한국환경농학회지
• /
• 제25권4호
• /
• pp.359-364
• /
• 2006

Reversed-phase high-performance liquid chromatography (HPLC) techniques were developed to quantify abamectin (ABM) in paprika (Capsicum annum). Separation was achieved on a $C_{18}$ ODS column with a mobile phase of acetonitrile/water (96/4, v/v) mixture in an isocratic elution at the flow tate of 1.2 mL/min for avermectins (AVMs). The retention times were 8.0 and 9.7mins for AVM $B_{lb}$ and AVM $B_{1a}$, respectively. Residual AVMs (sum of AVM $B_{1a}$, AVM $B_{1b}$ and 8,9-Z-AVM $B_{1a}$) in the vegetable were extracted with acetonitrile, and the silica solid-phase extraction cartridges were used to purify the extract. AVMs were derivatized using trifluoroacetic acid and 1-methylimidazole, and the derivatives were determined with a fluorescence detector (excitation at 365 nm and emission at 470 nm). High and consistent recoveries, ranging from 93% to 115%, were obtained for AVM $B_{1a}$ and 8, 9-Z-AVM $B_{1a}$ at fortified levels of $20{\mu}g/kg\;and\;200{\mu}g/kg$ for paprika. The limit of quantitation (LOQ) was $2{\mu}g/kg$. The residual levels of AVMs in paprika in a field experiment from one day to seven days after the last application decreased from 18.40 to $7.59{\mu}g/kg$. The half-life $(T_{1/2})$ of AVMs in paprika was 1.47 days.