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고추냉이즙을 첨가한 간장 양념 계육의 냉장 저장 중 품질 특성
서광명,정장호,Seo, Kwang-Myung,Chung, Chang-Ho 한국식품조리과학회 2012 한국식품조리과학회지 Vol.28 No.5
This study was tested the effects of the addition of blended wasabi juice on the quality characteristics of the soy sauce seasoned chicken meat at $4^{\circ}C$ for 12 days. The proximate analysis on the blended wasabi juice (w/w) showed 76.55% water, 4.15% crude protein, 0.58% crude fat, and 1.31% ash. There was no significant differences in the pH of the samples. The lightness ($L^*$) and yellowness ($b^*$) increased in proportion to the increased amount of the blended wasabi juice, but the redness ($a^*$) tended to decrease. The volatile basic nitrogen (VBN) was lower with the increased addition of the blended wasabi juice. The level tendencies in the salinity and water-soluble solids decreased with increasing amount of the blended wasabi juice added, but the difference was not significant. The total counts of viable cells and coliforms were lower in the juice-treated groups. In the preference test of the samples, the seasoned chicken breast with 2% blended wasabi juice was the most preferred in the overall acceptability, color, saltiness, sweetness, flavor, and texture.
신승호(Seung-Ho Shin),성기협(Ki-Hyub Sung),정장호(Chang-Ho Chung) 한국식품과학회 2013 한국식품과학회지 Vol.45 No.6
넙치육의 품질특성을 향상시키기 위해 얼음물 전처리 방법을 이용하였고, 얼음물 전처리 방법을 이용하여 넙치육의 품질 특성을 향상시키는 시점을 알아보기 위해 핵산성분 분석과 기계적 품질특성을 분석한 결과 사후경직도(rigor index)에서는 3oC와 15oC에서 저장한 대조군이 3시간에서 각각 4.17%, 1.23%로 측정되었고, 얼음물 전처리 방법을 이용한 넙치육은 3oC와 15oC에서 저장한 3시간 저장 했을 때 각각 6.06%, 1.59%를 나타내어 얼음물 전처리 방법이 사후경직도(rigor index)를 앞당기는 것으로 나타났으며, ATP 분해가 진행 될수록 생선회의 정미성분인 IMP의 축적량은 증가하였고 저장온도와 저장 시간, 그리고 전처리 방법에 따른 3oC에서 저장한 얼음물 전처리 방법을 이용한 넙치육이 12시간을 저장하였을 때 가장 많은 IMP축적량을 나타내었다. 넙치육의 신선도 지수 측정은 3oC에서 저장한 얼음물 전처리 넙치육이 0.05%를 나타내었고, 3oC에서 저장한 대조군은 0.39%로 얼음물 전처리 방법을 이용한 넙치육이 더욱 신선하다는 것을 알 수 있었으며, 얼음물 전처리 조건 유무에 따라서 K-value의 변화와 K-value에 대한 시간이 경과함에 따라 온도의 의존성을 나타내었다. 즉살한 넙치육을 얼음물 전처리 방법을 이용하였을 경우 신선도의 지표값인 K-value의 증가를 현저히 억제하는 경향으로 나타났다. 각 시료의 관능적 특성을 살펴보면 대조군과 얼음물 전처리 방법을 이용한 넙치육의 외관(appearance)과 향(odor)은 각 시료간의 저장온도와 전처리 방법, 저장 시간에 따른 유의적인 차이를 나타내지 않았고, 씹힘성(chewiness)과 감칠맛(umami), 그리고 전체적인 기호도는 3oC에서 6시간 저장한 얼음물 전처리 방법을 이용한 넙치육이 가장 높은 값을 나타내며 유의적(p<0.001)인 차이를 나타내었다. 대조군에 비해 얼음물 전처리 방법을 이용한 넙치육이 치사 후 12시간 동안 정미성분과 texture, 그리고 기호도 분석에서 대조군에 비해 높은 값을 나타내었으며 어육의 신선도 지표 값인 K-value가 낮게 측정되어 대조군에 비해 신선한 것으로 나타내어 활어회를 주로 먹는 우리나라에서 얼음물 전처리 방법을 이용한 넙치육이 신선함과 감칠맛을 향상시키며, 씹힘성을 높이는 넙치회 전처리 방법인 것으로 판단되었다. The purpose of this study was to monitor physicochemical changes of olive flounder (Paralichthys olivaceus) muscle by iced water pre-treatment. Moisture content, crude fat content, nucleotide content, texture (hardness and toughness), and rigor mortis were assessed. The sensory evaluation was performed with a nine-point hedonic test. Kvalues, a parameter of fish flesh freshness, were also calculated from the content of nucleotides and their corresponding decomposition products. Pre-treatment of flounder flesh with iced water was found to be fresher compared to the control, as determined by a difference in the K-values. Iced water pre-treatment hastened postmortem stiffness, as judged from the rigor index, and increased inosine monophosphate (IMP), which is known to be a savory taste compound, more quickly as adenosine triphosphate (ATP) degradation proceeded.
누에번데기 발효추출 동결건조분말과 전분으로 제조한 치즈대체품(Cheese Analogue)의 품질 특성
박혜승(Hye-Seung Bak),정장호(Chang-Ho Chung) 한국조리학회 2023 한국조리학회지 Vol.29 No.4
This study was to produce a cheese analogue using Bombyx mori pupa and different starch. Cheese analogues were prepared with a freeze-dried product in which Bombyx mori pupa, an edible insect food raw material, were fermented using Bacillus subtilis and a type of starches, namely tapioca, potato, corn, and wheat. Proximate composition, texture analysis, and color and consumer preference were conducted. The crude fat content of cheese analogues by starch type was 15-24%, showing a difference according to the starch type. Among the cheese analogue samples, hardness showed the highest value using corn starch, and tapioca starch showed the lowest value. Cohesiveness showed a significant difference in the value of tapioca starch as the highest value and the value of corn starch as the lowest value. The L value of the cheese analogue samples was lower and the b value was measured to be higher in cheese analogue samples than those of commercial mozzarella cheese. As a result of the consumer preference survey, there was no significant difference except for the Appearance and Color among cheese analogue samples, and it was confirmed that the difference in starch type affected the properties and preference of cheese analogues.
유하나 ( Ha Na Yoo ),정장호 ( Chang Ho Chung ) 한국식품조리과학회(구.한국조리과학회) 2011 한국식품조리과학회지 Vol.27 No.5
In this study, lotus leaf was added to a Takju (Korean milky rice wine) preparation to evaluate its effects on physicochemical and fermentation properties. For rapid saccharification Takju was stored at 25℃ for 2 days and then temperature was switched to 18℃ to mature the wine for 21 days. From the start of fermentation to 2-days, the pH of Takju decreased rapidly and acidity increased. Maltose, a byproduct of starch saccharification, increased for 2 days then rapidly decreased. Glucose fluctuated for 7 days and of the 21-days fermentation. The ethanol production rate was highest during the first 7 days, then slowed. Total viable yeast and lactic acid bacterial counts increased rapidly for 2 days and then decreased gradually thereafter. Leuconostoc spp. grew rapidly for 1 day and sharply disappeared with decreasing pH. DPPH radical scavenging activity was significantly higher for Takju prepared with lotus leaf than without. The overall acceptance of Takju tended to increase when it was prepared with lotus leaf.