• 한국작물학회지
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• 제57권4호
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• pp.359-364
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• 2012

본 연구는 도정도 5.5%(현백율 94.5%, 7분도)~13.5%(현백율 86.5%, 17분도)별 식미 및 이화학특성 변화를 분석하여 식미 증진을 위한 최적 도정도를 구명하고자 하였다. 이화학특성은 도정을 많이 할수록 백도와 아밀로스함량, 강하점도, 밥의 부착성은 증가하였으나, 반면 단백질함량, Mg/K 당량비, 지방함량, 취반점도, 밥의 경도는 유의하게 감소하였다. 식미관능평가에 의한 식미총평은 도정도 9.5%와 11.5%에서 통계적으로 유의하게 높았다. 그러나 현미를 도정하여 남는 쌀의 수율을 고려 할 때 식미총평이 좋은 최적 도정도는 9.5% 수준인 것으로 판단된다. 이는 이론적인 도정도 8%나 시중에서 유통되고 있는 쌀의 도정도 9% 보다 더 많이 도정한 것이다. 식미와 이화학특성과의 관계는 단백질함량, 아밀로스함량, 취반점도 및 밥의 경도는 부의 상관이, Mg/K 당량비, 강하점도, 밥의 부착성은 정의 상관이 있는 것으로 알려져 있다. 도정을 많이 할수록 식미와 부의 상관이 있는 단백질 함량은 감소하는 반면, 아밀로스함량은 증가 하는 등 이화학특성들 간에 상호작용이 있는 것으로 나타났다. 따라서 도정도 9.5%~11.5%에서 식미총평이 가장 좋았던 것은 이들 이화학특성들 간에 적정수준의 균형을 이루었기 때문으로 고찰된다.

• 한국식품과학회지
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• 제38권5호
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• pp.628-634
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• 2006

단체급식 및 대형 할인점에서 사용 및 판매되는 전처리 농산물중 급식에서 사용빈도가 높은 감자, 당근, 양배추에 대한 품질 평가를 실시하였다. 품질평가를 위해 관능 품질검사와 이화학적 분석이 이루어졌다. 전반적으로 대기업 급식업체에서 생산하는 전처리 농산물과 중소규모의 급식 납품업체에서 공급하는 제품 간의 큰 차이를 보이지 않았다. 또한 학교급식에 납품하는 업체의 전처리 농산물이 관능 품질검사에서 높은 점수를 나타내어 학교급식에서 사용되는 전처리 농산물의 품질이 높은 것으로 나타났다. 반면 대형할인점에서 판매하는 양배추, 당근, 감자의 품질은 개선의 여지가 보였다. 관능 품질 검사와 이화학적 분석 결과의 상관관계 분석에서는 "pH", "환원당"과 "산도"가 전처리된 양배추, 감자, 당근에서 관능 품질 검사 항목과 높은 상관관계를 나타냈고 이는 PLSR 분석을 통해서도 확인할 수 있었다. 향후 이들 농산물의 품질 검사에서 주요 분석항목으로 사용이 가능하리라 여겨진다. 전반적으로 단체급식에서 사용하는 전처리 농산물의 품질은 적정한 수준으로 여겨지나 가장 우려되는 부분이 식품의 안전성임을 고려할 때 다량 급식되는 식재료의 입고에서 조리-배식단계까지 주의가 확보되어야 할 것으로 여겨지고 실제 입고 후 조리 및 배식 전 과정에서의 분석이 향후 필요할 것으로 여겨진다.

• 한국축산식품학회지
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• 제38권3호
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• pp.544-553
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• 2018

This study was conducted to determine the effects of breed and sex on meat quality and sensory properties of the loin in three-way crossbred pigs: $Landrace{\times}Yorkshire{\times}Duroc$ (LYD) and $Landrace{\times}Yorkshire{\times}Woori$ (LYW) black pig synthesized by Korean native breed. Carcass traits did not differ by breed. Carcass weight and backfat thickness were higher in castrates than in gilts (p<0.01). LYW showed significant high values in fat content, cooking loss, and water-holding capacity (WHC) than LYD (p<0.05). Redness and yellowness of the meat were higher in LYW than in LYD (p<0.01). Further, LYW had lower pH and shear force than LYD (p<0.001). Significant high scores in color and flavor were obtained in LYW or gilts compared to LYD or castrates by sensory panel, respectively (p<0.05). However, other sensory traits did not differ by breed or sex. Capric acid (C10:0) was higher in LYD than LYW (p<0.001). However, stearic acid (C18:0) and saturated fatty acid (SFA) contents were higher in LYW than LYD (p<0.05). Eicosenoic acid (C20:2) and the n6/n3 ratio were higher in gilts than in castrates, whereas SFA content was higher in castrates than in gilts. These results suggest that certain physicochemical qualities of meat and sensory properties are improved in LYW compared to LYD. This study could provide basic data on meat quality of crossbred pigs with Woori black pig as a terminal sire.

• 한국식품저장유통학회지
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• 제17권3호
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• pp.358-364
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• 2010

분자압축 탈수공정에 의한 색도변화는 재사용 탈수액을 적용한 건조공정에서 원물과 유사한 색도를 나타내었다. 수분 및 수분활성도에서도 유의적 경향이 일치하였다. 탈수액의 농도와 첨가량에 의한 탈수율과 복원율의 변화에서는 탈수액의 농도 차이에 따라 탈수율은 달라졌으며 농도가 커질수록 탈수율이 증가하는 경향을 나타내었다. 복원율 역시 탈수액 농도가 낮을수록 완만한 복원율을 나타내었고 탈수액의 농도가 높을수록 복원율이 높았다. 탈수액의 첨가량에 의한 탈수율과 복원율에 변화에서는 첨가량이 다른 탈수제 차이에 따라 탈수율과 복원율이 달라졌으며 첨가량이 커질수록 탈수액 농도와 같이 뚜렷하게 탈수율이 증가하고 복원율이 높게 나타났다. 관능평가를 통하여 탈수액의 농도와 첨가량별 탈수액을 적용하여 분자압축 탈수건조한 생강시료를 비교 하였을 때 모든 항목에서 열풍건조가 가장 낮았고 외관의 경우에서는 동결건조한 시료가 우수하였지만 전체적인 평가에 있어서 탈수액을 이용하여 건조한 생강이 가장 우수하였다. 이 처럼 모든 품질평가 항목의 결과를 통하여 탈수액을 적용한 건조방법이 열풍건조와 동결건조보다 품질이 우수하고 시설과 가격에서 경쟁적으로 우수하며 활용가치와 기존의 건조방법의 단점을 보완해 주는 건조 방법으로 판단이 되어진다.

• 한국식품과학회지
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• 제23권4호
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• pp.490-497
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• 1991

수침온도와 시간, 가열시간 및 설탕과 간장의 양을 달리하여 제조한 콩자반의 품질특성을 조사한 결과는 다음과 같다. 가열 전 콩을 $20^{\circ}C$와 $60^{\circ}C$에서 수침 처리한 결과 침지온도에 관계없이 콩자반의 살색도, 염도 및 경도는 감소하였다. 설탕과 간장 첨가 후 가열시간이 길어질수록 콩자반의 갈색도, 염도 및 경도는 현저하게 증가하였으며 설탕과 간장의 첨가수준은 뚜렷한 차이를 가져오지는 않았으나 설탕 양이 증가할수록 경도는 약간 증가하였다. 관능검사 결과 가열시간이 길어짐에 따라 색깔, 경도 및 짠맛은 크게 증가하였고 설탕 양이 증가 할수록 색깔, 경도 및 단맛은 증가하였으며 간장 양은 짠맛 이외의 관능적 특성에는 영향을 주지 않았다.

• 한국식품조리과학회지
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• 제14권1호
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• pp.106-113
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• 1998

The purpose of this study is to investigate the antimicrobial effect of mugwort (Artemisia asiatica Nakai) on the rice cake and bread preservation, and to identify their antimicrobial compounds. The mugwort extracts showed complete inhibition on the growth of Bacillus subtilis and Staphylococcus aureus at 250 $\mu\textrm{g}$/ml level. Antimicrobial activi쇼 of mugwort extract were stronger than that of commercial antimicrobial agent. Five % of sodium propionate solution showed complete inhibition on the growth of B. subtilis, E. coli and S. aureus, but L. plantarum was inhibited 50.87% at the same concentration. When various amounts of freeze-dried mugwort powder were added in sulgis (steamed rice cake), 3% ssooksulgi (mugwort powder added sulgi) had quite lower level of total bacterial count (5.5$\times$$10^/5 CFU/g) compared with the control group (1.4$\times$$10^/7 CFU/g) at ambient temp. (30$\pm$1$^{\circ}C$) after 72 hr. Three % addition of mugwort showed 2 days extention of shelf-life of rice cake. The sensory qualities of ssooksulgi has no significant difference in moistness, consistency, cohesiveness, afterswallowing and overall quality compared with control group. Ssooksulgi with 3% of mugwort powder had the best overall quality in sensory test. The methanol extract of 500 $\mu\textrm{g}$/ml of mugwort could lead the successful retardation of the growth of putrefactive microorganism during the incubation of rice cake at 37$^{\circ}C$ for 24 hr. On the other hand, coumarin (Sigma) had 54% inhibitory effect at 500 $\mu\textrm{g}$/ml level, and (E,E)-2,4-decadienal completely inhibited the growth of putrefactive microorganism of whitesulgi at 100 $\mu\textrm{g}$/ml level during the incubation at 37$^{\circ}C$ for 48 hr.48 hr.

• 한국식품조리과학회지
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• 제16권2호
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• pp.99-111
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• 2000

The purpose of this study was to assess the qualities of cook/chilled soy sauce-glazed soybean curd with various packaging conditions as a trial to develop health-oriented convenience foods. The effects of three packaging methods, linear low density-polyethylene (LLD-PE), top sealing, and modified atmosphere packaging(MAP) on the shelf-life of HACCP-based cook/chilled soy sauce-glazed soybean curd were evaluated during 20 days of chilled storage in terms of time-temperature, microbiological (total aerobic plate count, psychrotrophic plate count, coliform, and fecal coliform count), chemical(pH and peroxide value(POV)), and sensory evaluation. The results of microbiological and chemical analyses were within the limits of the microbial and chemical standards for all phases after cooking. No significant differences were detected in microbial counts of the samples for all three packaging methods. However, sensory evaluation indicated that the top sealing and MAP methods showed a longer shelf-life than LLD-PE packaging. Recommended shelf-life of the product was 12 days for LLD-PE packaging, and 16 days for both top sealing and MAP. In conclusion, MAP was considered as the most effective packaging method for assuring microbial and sensory quality of this cook/chilled product.

• 한국식품조리과학회지
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• 제25권5호
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• pp.586-592
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• 2009

Sulgidduk samples containing 2, 4, and 8% red ginseng powder and a control[ED highlight - consider specifying what the control was, if 0%, then change to Sulgidduk samples containing 0(control), 2, 4 and 8%] were examined for moisture content, color, gelatinization properties, textural characteristics, and sensory qualities to determine the optimal ratio of red ginseng powder in the formulation. The moisture contents among the samples did not differ significantly. Specifically, they ranged from 39.64 to 40.69%, and increased as the red ginseng powder content increased. Additionally, the lightness decreased and the yellowness and redness increased as the red ginseng powder content increased. Evaluation of the gelatinization properties revealed that the, peak viscosity(P), hold viscosity(H), final viscosity(F), setback, and time to peak viscosity decreased with increasing red ginseng powder content, but the breakdown and temperature to peak viscosity did not differ significantly among samples[ED highlight - please ensure my changes are correct]. The hardness and adhesiveness decreased with increasing red ginseng powder content, as did the cohesiveness, gumminess, and chewiness; however, the springiness did not differ significantly among samples. Sulgidduk containing 4% red ginseng received the highest scores for flavor, taste, texture and overallquality. Based on the above results of the sensory and texture analyses, Sulgidduk containing 4% red ginseng had the highest quality[ED highlight - please ensure my changes are correct].

• 한국식품조리과학회지
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• 제24권6호
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• pp.856-860
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• 2008

We prepared Tofu-sulgi by adding tofu and then analyzed the final product in terms of its nutritional quality, rheological characteristics and sensory tests. While the calorie quantity of Sulgi with Tofu was relatively low compared to that of Baeksulgi, it contained the dietary fiber, calcium and iron that were not present in Baeksulgi. Since Baeksulgi holds a large amount of carbohydrates, it shows a higher weight due to its dense fiber. On the other hand, Sulgi with Tofu showed a relatively low level of tofu protein despite the increased amount of tofu protein. This demonstrated the soft characteristics of Sulgi with Tofu. Also, the results of the sensory test showed that Sulgi with Tofu exhibited a higher preference than Baeksulgi in terms of its taste, flavor and fiber content. The preparation method of Sulgi with Tofu in this study used the natural grinding of tofu without removing the moisture. Also the use of both non-glutinous and glutinous rice flour that can be obtained easily in the public market, are convenient due to their characteristics of easy storage and no property change. Therefore, the preparation method of Sulgi with Tofu is quite convenient as compared to that of traditional Dduk (Korean rice cake) including Baeksulgi. From the perspectives of nutritional content, rheological characteristics and taste preference, Sulgi with Tofu fared better than Baeksulgi. Considering the overall quality characteristics of Sulgi with Tofu, we believe that the addition of tofu could contribute positively toward the quality characteristics of Sulgi.

• 한국식품조리과학회지
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• 제30권2호
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• pp.129-138
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• 2014

This research aimed to develope squash sikhye containing retrograded rice flour using response surface methodology. For this, nonlinear regression equation was calculated with the setting of independent variables as retrograded rice flour containing resistant starch and squash, and dependent variables as viscosity, sugar content, pH, color, and sensory attributes. Under the experimental condition, the quality characteristics of squash sikhye were found as 6.20~6.25 for pH, $14.00{\sim}17.33^{\circ}Brix$ for sweetness, 2.64~4.45 cP for viscosity, 57.51~60.18 for lightness, 4.94~7.52 for redness, and 50.98~60.29 for yellowness. It also was revealed overall acceptability in sensory evaluation rated as 9.67~10.83 out of 15 point. These results showed statistically significant differences in quality attributes with the increase of retrograded rice flour and squash(p<0.05). Thus, optimal mixing quantity of squash and retrograded rice flour for squash sikhye was identified as 114 g and 65 g, respectively. Comparison of sensory qualities of four samples, namely squash sikhye with and without retrograded rice, and two commercial products, showed that squash sikhye including retrograded rice flour had the best quality in terms of color, taste, mouth feeling, flavor and overall acceptability (p<0.05). Thus the squash sikhye with retrograded rice flour can be the potential products as a health benefit beverage for the old adult and the young generation.