• 한국식생활문화학회지
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• 제23권1호
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• pp.55-61
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• 2008

Non processed onion (Allium cepa L.) powder or onion powder processed with ${\beta}-cyclodextrin+1%$ calcium chloride+1% soluble starch solution was added to the diet of 16 week old Wistar and spontaneously hypertensive rats (SHR) for 5 weeks. 36 SHR and Wistar rats were randomly divided into 3 diet groups, each of six. They were named control, NPO (non processed onion), PO (processed onion). The rats of the control group were fed diet without onion powder. To NPO and PO groups were added 5% of non processed onion and processed onion, respectively. Body weight gain, food efficiency ratio (FER), blood pressure, angiotensin converting enzyme (ACE) activity and Na excretion of urine and feces were analyzed. The processed onion and non processed onion diet reduced body weight gain without affeting the total food intake in Wistar rats (p<0.05). The body weight gain was lowest in Wistar rats fed with a diet with processed onion powder. The rats fed with diet containing PO or NPO had lower blood systolic blood pressure in SHR (p<0.05). The effect of onion powder on decreasing the blood pressure was not significant in Wistar rats. The ACE activity in lung was lowered in the SHR fed with either PO or NPO (p<0.05) compared to those fed with control diet. The urinary Na excretion was significantly lower in SHR than Wistar rats. The effects of PO and NPO on increasing the urinary and fecal excretion of Na were significant (p<0.05). These results suggest that onion processed with ${\beta}-cyclodextrin+1%$+1% calcium chloride+1% soluble starch solution to reduce volatile flavor, browning and caking preserves an antihypertensive effect of non processed onion.

• Toxicological Research
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• 제13권1_2호
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• pp.161-165
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• 1997

This study was conducted to investigate the skin irritation by transdermal administration of the three dyes. These dyes were originated from onion by using extraction method. By the order of extraction from onion, A-dye was obtained from onion by using water at 90-100$\circ$C. B-dye was extracted from A-dye with ethylacetate. After ethylacetate extraction from A-dye, the lower layer named as C-dye. Twenty-four New Zealand white rabbits were divided into three groups. The each groups was consisted of two subgroups according to high dose (extracted dyes) and low dose (the 100-fold dilutions of A-, Band C-dye). In primary skin irritation test of male New Zealand White rabbits, body temperature and weights were not significantly changed and blood cells were positioned in normal blood cell ranges of health rabbits. Primary irritation index was "0" in the test and control sites of all animals used in this study. By the results obtained in the present test, all dyes were evaluated as a non-irritant on the basis of the criteria of Draize.of Draize.

• 한국식품저장유통학회지
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• 제5권2호
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• pp.123-126
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• 1998

This study was carried out investigate to optimum levels of nitrogen and phosphate fertilizer to get a higher yield and a quality of an onion(Allium Cepa L.) from 1993 to 1994. Three fertilizer levels were applied with 120, 240 and 360kg/ha of nitrogen and 100, 200 and 300kg/ha of P2O5 during the onion growing season. After harvesting the onion, it was storaged at given deposit. The growth and yield of the onion were better at the fertilizer levels of both 240 and 360kg/ha of nitrogen and of both 200 and 300kg/ha of P2O5 than at the level of 120kg/ha in nitrogen and 100kg/ha of P2O5. The content of total nitrogen and P2O5 in plant was decreased with reduced application levels of nitrogen and phosphate fertilizer. The rotting rate was higher at the levels of both 360kg/ha in nitrogen and 300kg/ha in P2O5 than the other treatment during the storage period. The sprouting rate tended to be high at 240kg/ha of nitrogen and 100kg/ha of P2O5.

• 한국식품영양학회지
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• 제14권4호
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• pp.346-354
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• 2001

Physicochemical properties of dough and bread supplemented with onion (Allium cepa L.) powder were investigated. Farinographic characteristics of dough showed that addition of onion by 2% and 4% increased water absorption, however, as the onion added more the water absorption decreased. Addition of 2% onion delayed time for development of dough a little, while more than 4% onion shortened the development time significant1y. A reduction in stability and an Increase in weakness of dough were observed by addition of onion. Addition of onion powder resulted in a reduction of extendibility and an increase in resistance to extension of dough as measured by extensograph. Amylographic analysis showed that addition of onion increased gelatinization temperature and decreased maximum viscosity. Moisture content, baking loss, height and volume of bread tended to decrease with the addition of onion powder. Lightness of bread crust and crumb decreased as the onion powder added more, while redness and yellowness increased. Bread tilth onion powder had mode free amino acid. especially, Arginine. aspartic acid, glutamic acid and alanine, than control. The addition of onion hardness of bread increased, but springiness decreased as the onion added more. Sensory evaluation of bread indicated that addition of 2% and 4% onion powder enhanced springiness, mouth feeling, appearance, hardness, moistness and overall acceptability.

• 한국식품저장유통학회지
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• 제10권2호
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• pp.224-229
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• 2003

양파 근권미생물은 양파 뿌리를 균원시료로 하여 약 250여종의 근권미생물을 순수 분리하였고 이들 중에서 길항미생물은 무름병균인 Erwinia carotovora subsp. carotovora와 시들음병균인 Fuarium oxysporium에 각각 서로 대치 배양하여 두 병원균 모두에 가장 강한 길항 효과를 나타내는 YJ-4 균주를 최종 선발하였다. 선발균주 YJ-4는 Bergey's mannual of systematic bacteriology 방법에 따라 조사하여 Bacillus 속으로 판정하였고, 세포벽 지방산을 분석하여 동정하는 Sherlock system에 의해 Bacillus ehimensis와 0.778의 유의성을 확인하였으며, 165 rDNA의 부분 염기서열(609bp)로 Bacillus ehimensis와 98.36%의 높은 유사도를 보여 길항균 YJ-4는 Bacillus ehimensis로 동정하였다. B. ehimensis YJ-4로 명명한길항균은 세균인 무름병균 (Erwinia carotovora subsp. carotovora)과 세균썩음병균 (Pseudomonas sp.)에도 길항력을 나타내었고, 진균인 잘록병균 (Rhizoctonia solani), 잎마름병균 (Stemphylium botryosum), 검은무의병균 (Alternaria porri), 검은점잎마름병균 (Septoria sp.), 잿빛곰팡이병균 (Botrytis cinerea), 흑색썩음균핵병균 (Sclerotium cepivotum), 시들음병균 (Fusarium oxysporium), 푸른곰팡이병균 (Penicillium sp.)등에도 길항 효과를 나타내었다. 특히 시들음병균인 F. oxysporium에 생육억제환의 길이가 24.8mm로 가장 높은 길항력을 나타내었다.

• The Plant Pathology Journal
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• 제23권4호
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• pp.295-299
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• 2007

These experiments were carried out to examine efficacy of soil solarization for control of pink root disease by means of mulching with transparent polyethylene sheets in the hot season. The effects of soil solarization on incidence of pink-root disease caused by Pyrenochaeta terrestris and on onion growth and on populations of soil fungi were investigated. Solarization was dramatically effective in reducing pink root incidence in onion seedling and harvested onion bulb. A 30-day and 40-day solarization treatment significantly improved seedling survival and increased yield of 'Changnyeong-deago' onion while decreasing incidence of pink root. Populations of soil fungi from fields planted to onion were assayed on selective media. Solarization treatment was effective in reducing populations of P. terrestris, Pythium spp., and Rhizoctonia sp. in soil. Increase of yield of onion bulbs was associated with control of soil-borne pathogenic fungi. Soil solarization had beneficial effects on yield, bulb diameter, or incidence of pink root.

• Asian-Australasian Journal of Animal Sciences
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• 제30권2호
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• pp.229-235
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• 2017

Objective: This study was conducted to investigate the effect of dietary onion (Allium cepa) extract (OE) supplementation on growth performance, apparent total tract retention (ATTR), blood profile, carcass characteristics and meat quality in broilers. Methods: Four hundred male broiler chicks (Ross 308, 3-d old) were randomly allocated to four dietary treatments for 28 d feeding trial. Each treatment has five replications with 20 birds each. Four dietary treatments were designated according to the OE supplementation levels (0 as control, 5, 7.5, and 10 g of OE per kg of basal diet respectively). On d 28, a total of 20 birds from each treatment were subjected for ATTR, serum biochemical assay, carcass characteristic and organ weight measurement. Results: Overall weight gain of OE 7.5 g/kg group was higher (p = 0.04) than control group. The ATTRs of dietary energy (p<0.01) and ether extract (p = 0.04) linearly increased with increasing levels of dietary OE. However, no difference in ATTR of dry matter and crude protein was evident. Furthermore, serum IgG concentration increased linearly (p<0.01) and quadratically (p = 0.03) with increasing OE supplementation. No differences in carcass dressing weight and amount of abdominal fat by treatments were observed. Also, the weight of organ including immune organ was not different among the treatments. The TBARS values of 10 d stored breast meat decreased linearly (p<0.01) and quadratically (p<0.01) with increasing dietary OE levels. The meat color was also affected, with lower (p<0.01) redness score in meats from OE supplemented groups. This study showed that dietary OE improved broiler weight gain presumably by increasing feed intake and ATTR of both energy and ether extract. The dietary OE increased serum IgG level and meat anti-oxidation capacity. Conclusion: This study implies that the recommended level of dietary OE supplementation could be beneficial for improving broiler performance and meat quality.

• 생물환경조절학회지
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• 제12권2호
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• pp.101-105
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• 2003

양파 plug묘 육묘시 일장조절에 의한 우량묘 생산을 위해 자연일장을 대비로 하여 11.5시간, 12.5시간 및 13.5시간의 일장 하에서 월륜과 창녕대고 품종을 200공 plug tray에 육묘한 후에 직경 16cm pot에 이식하여 16시간의 일장 하에서 재배하였다. 엽수, 엽초경, 초장 및 엽초장은 시기가 경과할수록 증가하였으나 13.5시간 일장에서의 초장과 엽초경은 일장처리 20일 후에는 감소하였다. 일장에 따른 생육은 엽수 및 엽초경은 장일조건에서 생육이 좋았으나 초장 및 엽초장은 장일에서 억제되는 경향을 나타내었다. 장일조건에서 육묘한 것일수록 이식 후에 구가 크고 비대도 빨랐다. 이상의 결과로 볼 때 육묘기간 중의 장일처리로서 도장의 억제 및 우량묘 생산의 가능성을 보여주고 있다.

• 원예과학기술지
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• 제31권1호
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• pp.72-79
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• 2013

Inactivation of the gene coding for dihydroflavonol 4-reductase (DFR) is responsible for the color difference between red and yellow onions (Allium cepa L.). Two inactive DFR-A alleles, DFR-$A^{PS}$ and DFR-$A^{DEL}$, were identified in our previous study. A functional marker was developed on the basis of the premature stop codon that inactivated the DFR-$A^{PS}$ allele. A derived cleaved amplified polymorphic sequences (dCAPS) primer was designed to detect the single nucleotide polymorphism, an A/T transition, which produced the premature stop codon. Digested PCR products clearly distinguished the homozygous and heterozygous red $F_2$ individuals. Meanwhile, to develop a molecular marker for detection of the DFR-$A^{DEL}$ allele in which entire DFR-A gene was deleted, genome walking was performed and approximately 3 kb 5' and 3' flanking sequences of the DFR-$A^R$ coding region were obtained. PCR amplification using multiple primers binding to the extended flanking regions showed that more of the extended region of the DFR-A gene was deleted in the DFR-$A^{DEL}$ allele. A dominant simple PCR marker was developed to identify the DFR-$A^{DEL}$ allele using the dissimilar 3' flanking sequences of the DFR-A gene and homologous DFR-B pseudogene. Distribution of the DFR-$A^{PS}$ and DFR-$A^{DEL}$ alleles in yellow onion cultivars bred in Korea and Japan was surveyed using molecular makers developed in this study. Results showed predominant existence of the DFR-$A^{PS}$ allele in yellow onion cultivars.

• 한국육종학회지
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• 제43권2호
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• pp.126-132
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• 2011

The bulb storability of eight red and ten yellow onion (Allium cepa L.) cultivars grown primarily in Korea was evaluated. During storage, sprouting occurred earlier in red cultivars than in yellow cultivars. In addition, the ratio of sprouted to unsprouted bulbs increased more rapidly in red cultivars than in yellow cultivars. However, not all yellow cultivars had strong storabilities. Bulb storability of three yellow cultivars was as poor as that of red cultivars, suggesting only a slight possibility of a pleiotropic effect of color and bulb storability. Meanwhile, $F_3$ lines of a red cultivar selected based on stronger storabilities showed intermediate storabilities between those of the red and yellow cultivars, implying that strong storability could be obtained by successive selection. In contrast, $F_1$ hybrids from crosses between yellow and red breeding lines showed poor storability compared with the yellow cultivars, indicating that poor storability may be dominant over strong storability. The relationships between color and other traits that potentially affect storability, such as fresh and dry weight, water content, and firmness of bulbs, were evaluated. No significant differences in these traits were observed between the two colors, although the water content of yellow cultivars and the dry weight of red cultivars were slightly higher than their counterparts. Correlation analyses between bulb storability and other traits, including weight, water content, and firmness, also showed no significant correlations. In this study, no correlations were identified between bulb color, storability, and other traits. However, based on these results, red cultivars with stronger storabilities could be developed through successive selection of bulbs with stronger storabilities.