• 방사선산업학회지
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• 제5권4호
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• pp.383-391
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• 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.

• 한국식품저장유통학회지
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• 제2권1호
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• pp.131-138
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• 1995

In order to obtain basic data for the development of Gat-Kimchi, a salted and fermented lear mustard, changes in mineral, pigment, texture, sensory score and microflora during fermentation at 5$\pm$2$^{\circ}C$ were investigated. Changes in mineral, including iron, calcium and potassium were obviously shown and their contents were markedly decreased after 14 days of fermentation. Contents of total chlorophyll and carotenoid were slowly decreased after 6 and 10 days of fermentation, respectively and ratios of chlorophyll a/b were not changed and similar to those of other cruciferous vegetable Kimchi during fermentation. Shear force of Gat-Kimchi in rheometer during fermentation was increased. The sourness and hardness(p<0.05) of Gat-Kimchi after 24 days of fermentation were significant different in sensory evaluation with no significant difference in off-flavor, color and hotness. Compared with other Kimchi, taste of Gat-Kimchi was desirably kept for 54 days of fermentation. Total viable count and lactic acid bcateria(Genus Lactobacillus) observed to be Increased in the range of 18 to 24 days and yeasts to be gradually increased during overall period of fermentation.

• 한국식품영양과학회지
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• 제41권2호
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• pp.182-191
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• 2012

본 연구에서는 흑미 미강 분말을 첨가(0, 1, 3, 5, 7, 9%)한 쿠키를 제조하여 쿠키의 항산화 활성을 입증하고 품질특성을 측정하였다. 흑미 미강 분말의 총 페놀화합물 함량은 $11.81{\pm}0.03$ mg GAE/g이며, 이를 쿠키에 첨가한 경우 시료의 첨가량에 비례하여 증가하였다. 제조된 쿠키의 DPPH radical 소거능을 측정한 결과 흑미 미강 분말의 첨가량에 따라 항산화 활성도 유의적으로 증가하는 결과를 나타내었다. 항산화 활성의 기능성과 함께 제품의 적합성 판단을 위해 흑미 미강 분말과 쿠키의 품질평가를 실시하였다. 일반성분 분석의 결과 흑미 미강에는 섬유소와 지방의 성분이 많은 부분을 차지하고 있음을 알 수 있었다. 지방산의 분석에서 흑미 미강은 약 80%의 불포화지방산을 함유하고 있었으며 그 성분은 주로 oleic acid와 linoleic acid로 나타났다. 또한 아미노산의 분석에서 대조군에 비해 7% 첨가 쿠키가 높은 아미노산 함량을 나타내었다. 반죽의 밀도는 흑미 미강 첨가량이 증가할수록 높게 나타났고 pH는 감소하였다. 쿠키의 수분함량에는 유의적 차이가 나지 않았으며, 퍼짐성 지수는 흑미 미강 분말의 첨가량이 많아질수록 증가하였고, 손실율과 팽창률은 감소하였다. 쿠키의 색도는 흑미 미강 분말의 첨가량이 증가할수록 L값과 b값이 낮아지고, a값이 높아졌으며, 경도는 감소하는 경향을 나타내었다. 쿠키의 기호도 검사(전반적인 기호도, 외관, 향, 맛, 조직감)에서 5%와 7% 흑미 미강 쿠키가 유의적으로 높게 나타났다. 특성 강도 검사(흑미 미강 향, 고소한 맛, 부드러운 정도, 삼킨 후의 느낌)에서는 흑미 미강을 첨가한 쿠키에서 유의적으로 높은 강도를 보였으며, 느끼한 향은 대조군이 유의적으로 가장 강하다는 결과를 얻었다. 이러한 결과로 보아 쿠키에 흑미 미강분말을 첨가하는 것은 쿠키의 기호도를 증가시켜주고 동시에 총 페놀함량과 DPPH 라디칼 소거능을 높여주어 쿠키의 가치를 높일 수 있어 바람직할 것으로 사료되며, 쿠키 제조시 기호도가 가장 높고 항산화능이 좋았던 7% 흑미 미강 분말을 첨가하는 것이 적합할 것으로 생각된다.

• 한국식품조리과학회지
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• 제28권4호
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• pp.407-412
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• 2012

The objective of this research was to study the effect of pre-treatments before deep frying on the reduction in acrylamide formation, crispness and sensory properties of French fries. The acrylamide concentration was lower in pre-treated French fries before frying with citrus acid, ascorbic acid and salt solution than that in untreated French fries. Crispness, moisture and fat contents, color, texture and overall acceptability of pre-treated French fries were not significantly different compared to those in control. Therefore, French fries pre-treated with citrus acid, ascorbic acid and salt solution before frying had good sensory properties, and reduced acrylamide formation.

• 동아시아식생활학회지
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• 제14권3호
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• pp.265-274
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• 2004

To investigate the effect of cereal powders on the quality and storage characteristics of sausage, Aw, pH, microbial count, TBA value, VBN value, textual and sensory characteristics were examined. Water activity tended to decrease as storage time prolonged and all the samples showed higher Aw's than that of the control. During the storage period, pH values of all the samples decreased. L, a and b values had a tendency to decrease during the storage period. During the four weeks storage at 4$^{\circ}C$, TBA and VBN values of all the sample showed increasing tendency and were lower than those of the control. Total plate counts of bacteria, the number of lactic acid bacteria and coliform bacteria counts increased as the storage time prolonged. Texture characteristics of all samples increased up to 1 week storage and decreased subsequently. The sensory scores of all the samples decreased as the storage time prolonged.

• 한국식품영양과학회지
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• 제23권4호
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• pp.618-624
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• 1994

The addition of mustard leaf to kimchi making for extanding the optimum edible period was studied. The quality and sensory characteristics of mustard leaf added kimchi were evaluated . The activity, lactic and acetic acid contents of mustard leaf added kimchi showed lower than that of control kimchi but reducing sugar and vitamin C contents was higher. The duration of optimum edible periods of mustard leaf added kimchi lasted one more weak. While the optimum pH of kimchi for eating lasted, the sensory pannel score for sour taste of mustard leaf added kimchi was lower than that of control but the scoreas for savory taste, carbonated taste and hardness were higher . Especially , the sour taste score between two groups were significantly different (p<0.05). Overall quality score for the mustard leaf added kimchi was higher. There was no differences in texture determined by Penetrometer between mustard leaf added kimchi and control kimchi until the fermentation reached the optimal condition for eating . After that period , the degree of degradation of texture was much delayed in mustard leaf added kimchi.

• 한국식품조리과학회지
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• 제24권6호
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• pp.829-836
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• 2008

This study was carried out to investigate the properties of mul-kimchi made with allium victorialis. Chemical and sensory characteristics were determined during fermentation at $4^{\circ}C$ for 4 weeks. The pH decreased with an increase in total acidity. Mul-kinchi showed salinity properties ranging within $1.0{\sim}1.5%$ during fermentation. Hunter's color L, a-values were gradually decreased, but b-value was increased. In the texture, hardness and strength decreased as the aging time increased. The numbers of total- and lactic bacteria cells rapidly increased up to the second week, and this slowly increased thereafter. Sensory evaluation of mul-kinchi was favored for appearance, flavor, taste, texture and overall acceptability during the second week. Sensory properties of well ripened odor and sour taste negatively correlated with physicochemical properties of pH and hardness. Sour odor and sour taste were positively correlated with acidity and total- and lactic acid bacteria.

• 한국표면공학회지
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• 제18권2호
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• pp.53-60
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• 1985

The microstructure of zine electrodeposits was investigated by using zinc sulfate solution in still bath. The cathode current efficiency decreased with increasing current density, and decreasing temperature. The preferred orientation of the zinc electrodeposits changed from (10.3) texture to(10.${\ell}$)-(00.1)(${\ell}$=1, 2, 3) texture through (10.2)-(10.3) preferred orientation with increasing cathode over potential. The surface morphology of zinc electrodeposits changed from the dendritic growth with granular crystallites to the blocks of hexagonal crystallites packed together with increasing current density. The microstructure of cross section of the above deposits are the rough granular structure and columnar structure respectively.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2003년도 학술발표논문집
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• pp.559-562
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• 2003

The results and discussions of surveyed case site at constructed steel pile in potential acid sulfate soil were as follows. Topography at surveyed site was local alluvial valley and that site soils was classified as BanGog and YuGye series as detailed soil surveyed results in RDA and soil texture was Clay/Clay Loam. Soils pH was neutral, which was average 7.5 but much decreased to average 4.2 after $H_2O_2$ treatment. Organic matter and sulfate ions contents were very rich. The corrosion was severe at ground water fluctuation depth. Deposits colored black were attached to steel pile surface, which because of violent reaction in treatment HCI solution, were guessed as corrosion products (FeS) reduced by sulfate reducing bacteria(SRB). Consequently, main cause was thought microbiologically induced corrosion at this site where there is ground water fluctuation occurring oxidation and reduction reactions in turn and the soil is potential acid sulfate soil.

• 대한가정학회지
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• 제27권3호
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• pp.71-78
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• 1989

As the level of life improves, the eating habit is changing from rice meal to bread meal and at the time, eat more strawberry jam than before. We tried to study to select the good cooking method and the proper strawberry variety for the jam through the sensory evaluation We made four kinds jam of Bogyo-Joseoung and Ai-berry by different cooking methods, the result6s of the sensory evaluation are as follow: The jam of Ai-berry is better than that of Bogyo-Joseoung by the paired comparison test but the difference between those, if we add some lemon to the jam of Bogyo-Joseoung and Ai-berry, is very little. The multiple comparison test proves the sourness, if added some lemon and citric acid, become better and the color and viscosity, if added pectin, became better. The overall preference about jam, if pectin and citric acid were added together, was best. In addition, we evaluated the quality of jammed bread by multiple comparison test. The result is like this: The jam with lemon is very good in color, flavor, sourness and texture, but the jam with pectin and citric acid was the best in overall preference.