• Applied Biological Chemistry
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• 제38권3호
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• pp.232-238
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• 1995

과당시럽인 과당과 고과당을 $-5{\sim}60^{\circ}C$에 보관하면서 보관 온도와 기간에 따른 이화학적 특성의 변화를 조사하였다. 저장기간 중 색택은 흡광도, HMF, Hunter color value로 측정하였는데 저장 온도가 높을수록 그리고 fructose 함량이 높을수록 변화가 크게 나타났다. 과당시럽은 dilatant 유체의 흐름 특성을 나타내었으며 저장 기간중 겉보기 점도는 큰 변화가 없었다. 또 각 저장 온도에서 30일간 저장한 후 당조성을 분석한 결과 fructose함량이 감소하고 glucose와 maltose함량이 상대적으로 증가하였다. 한편 과당은 $13^{\circ}C$, 고과당은 $5^{\circ}C$ 이하의 온도에 저장한 경우는 결정 형성이 관찰되었다.

• 한국식품영양학회지
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• 제23권3호
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• pp.386-391
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• 2010

Sulgidduk samples containing control, 0.5, 1, 1.5 and 2% black ginseng extracts and a control were examined for moisture content, color, textural characteristics, and sensory qualities to determine the optimal ratio of black ginseng extracts in the formulation. The moisture content of sulgidduk added with black ginseng extracts was 37~40%. Additionally, the lightness decreased and the redness and the yellowness increased as the black ginseng extracts content increased. Hardness, springiness, gumminess and chewiness increase with the addition of black ginseng extracts. however, adhesiveness did not differ significantly among the groups. Sulgidduk containing 1% black ginseng extracts received the highest scores for color, flavor, texture and overall preference. Based on the above results of sensory and texture analyses, sulgidduk containing 1% black ginseng extracts had the highest quality for commercialization.

• 한국식품영양학회지
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• 제6권4호
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• pp.322-328
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• 1993

A study of general characteristics of acetone extracted pigment from the cell mass of Rhodospirillum rusrum DSM 467 was carried out for the development of natural food colorant. Through visible absorption scanning, it showed seven absorption peaks at 355, 410, 529, 624, 680 and 747nm, and it was shown to be yellow color. In acidic and neutral conditions, the color was yellow, while in the alkaline condition it was greenish yellow. This pigment was stable at pH range between 3.0~10.0, and below 4$0^{\circ}C$. In the presence of light and oxygen, the stability of pigment rapidly degraded and it became unstable in the presence of metal ions such as Cu2+, Al3+ and Fe3+. Through TLC analysis, it was shown to be composed of seven color fractions.

• 한국식품저장유통학회지
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• 제17권1호
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• pp.9-15
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• 2010

로즈마리 분말의 최적 첨가량을 찾기 위하여 항산화 효과와 항균력이 있는 건강기능성의 생리활성 소재인 로즈마리 분말을 첨가하여 제조한 스폰지 케이크의 색도와 관능적 특성을 보았다. 스폰지 케이크에 로즈마리 분말의 첨가량은 0, 0.1, 0.3, 0.5 및 0.7%(w/w)로 하였고, $20^{\circC$에서 3일간 저장하면서 색도, 기호도와 강도 특성의 변화를 측정하였다. 로즈마리 분말의 첨가량이 증가할수록 명도(L값)와 황색도(b값)는 낮아졌으나 적색도(a값)는 증가하여 첨가량에 따라 스폰지 케이크의 색이 어두워지며 적갈색으로 변하는 것을 알 수 있었다. 기호도 특성 결과 로즈마리 분말의 첨가량이 증가함에 따라 색, 단맛, 외관에 대한 기호도는 감소하였으나, 기공성은 유의차가 없는 것으로 나타났다. 로즈마리 분말 0.1% 첨가구가 외관, crust와 crumb의 색, 향기, 단맛, 전반적인 기호도에서 유의적으로 높은 점수를 받아 선호하는 것으로 평가되었다. 강도 특성 결과 로즈마리 분말 0.7% 첨가구에서 색과 냄새의 강도가 가장 강하게 나타났으며, 첨가량이 증가할수록 단맛의 강도는 낮아졌다.

• 한국식생활문화학회지
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• 제27권4호
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• pp.400-406
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• 2012

The objectives of this study were to investigate the quality characteristics of Gondregaedduck containing 0, 10, 20, and 30% Cirsium setidens. By increasing the level of Cirsium setidens, Hunter color L and a values of Gondregaedduck decreased, whereas b value increased. Hardness, springiness, and cohesiveness of Gondregaedduck decreased upon addition of Cirsium setidens. Over 3 days of storage, Gondregaedduck showed a slightly high total bacterial count compared to control. Sensory evaluation showed that Gondregaedduck containing 10% Cirsium setidens had higher color, taste preference, and overall acceptability.

• Preventive Nutrition and Food Science
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• 제14권3호
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• pp.220-225
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• 2009

In this study, the color value, water solubility, swelling power and sensory evaluation of Dioscorea batatas was examined with the addition of functional additives such as sugar alcohols and organic acids to investigate the browning inhibition and preference of these additives. Treatment with erythritol and citric acid were found to result in the highest hunter L-value, solubility and swelling power relative to the other functional additives. Therefore, erythritol and citric acid were selected as additives for Dioscorea batatas. The Dioscorea batatas containing the mixed additives (erythritol and citric acid) showed higher brightness, water solubility and swelling power than those containing only a single additive. In addition, the color and taste preference determined in the sensory evaluation had higher values when the mixed additives were used.

• 한국식품조리과학회지
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• 제21권5호
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• pp.585-590
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• 2005

The purpose of this study was to investigate the effects of oriental medicinal plant extracts added to chocolates on the moisture content, color, radical scavenging activity and sensory characteristics. The oriental medicinal plant extracts were added at a weight percentage of 0, 4 and 8%. As the ratio of the extracts in the chocolates increased, the moisture content, color, and radical scavenging activity increased. In sensory evaluation, significant differences (p<0.05) were shown in taste, bitterness, and overall acceptability depending on the addition of oriental medicinal plant extracts but there were no significant differences in chocolate aroma and texture.

• Food Science and Biotechnology
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• 제14권2호
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• pp.280-285
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• 2005

Applicability of near infrared reflectance spectroscopy (NIRS) was examined for quality control of red pepper powder in milling factories. Prediction of chemical composition was performed using modified partial least square (MPLS) techniques. Analysis of total 51 and 21 red pepper powder samples by conventional methods for calibration and validation, respectively, revealed standard error of prediction (SEP) and correlation coefficient ($R^2$) of moisture content, ASTA color value, capsaicinoid content, and total sugar content were 0.55 and 0.90, 8.58 and 0.96, 31.60 and 0.65, and 1.82 and 0.86, respectively; SEP and $R^2$ were low and high, respectively, except for capsaicinoid content. The results indicate, with slight improvement, on-line quality measurement of red pepper powder with NIRS could be applied in red pepper milling factories.

• 한국축산식품학회지
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• 제34권5호
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• pp.582-590
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• 2014

The effect of mugwort extract (ME) and vitamin C (VC), added individually or in combination, on color, lipid oxidation, and sensory characteristics of chicken nuggets stored for 12 d was investigated. Eight treatments of chicken nuggets contained the following: Control (no antioxidant added), VC (0.05% VC), ME 0.05 (0.05% ME), ME 0.1 (0.1% ME), ME 0.2 (0.2% ME), VC+ME 0.05 (0.05% VC + 0.05% ME) and VC+ME 0.1 (0.05% VC + 0.1% ME), VC+ME 0.2 (0.05% VC + 0.2% ME). Results showed that the mixture of 0.05% VC and 0.2% ME was most effective for delaying lipid oxidation (thiobarbituric acid reactive substances, conjugated dienies, and peroxide formation) when compared to the control or ME alone added. The color values of all treatments were significantly affected by adding ME. Additionally, the total color difference (${\Delta}E$), chroma ($C^*$), and hue angle ($H^{\circ}$) values of all treatments, except for VC, were lower than those of the control as the amount of ME increased. The sensory characteristics (flavor, odor, and overall acceptability) did not differ significantly in any of the chicken nugget samples, whereas storage time had a significant effect. The results suggest that the possibility of utilizing chicken nuggets with a mixture of mugwort extract and vitamin C for the increase of shelf-life and quality.

• 한국축산식품학회지
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• 제38권2호
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• pp.338-349
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• 2018

The objective of this study was to investigate comparison of physicochemical, microbiological, and sensory characteristics of Hanwoo eye of round by various packaging methods [wrapped packaging (WP), modified atmosphere packaging (MAP), vacuum packaging (VP) with three different vacuum films, and vacuum skin packaging (VSP)] at a small scale. Packaged Hanwoo beef samples were stored in refrigerated conditions ($4{\pm}1^{\circ}C$) for 28 days. Packaged beef was sampled on days 0, 7, 14, 21, and 28. Physicochemical [pH, surface color, thiobarbituric acid reactive substances (TBARS), and volatile basic nitrogen (VBN) values], microbiological, and sensory analysis of packaged beef samples were performed. VP and VSP samples showed low TBARS and VBN values, and pH and surface color did not change substantially during the 28-day period. For VSP, total viable bacteria, psychrotrophic bacteria, lactic acid bacteria, and coliform counts were lower than those for other packaging systems. Salmonella spp. and Escherichia coli O157:H7 were not detected in any packaged beef samples. A sensory analysis showed that the scores for appearance, flavor, color, and overall acceptability did not change significantly until day 7. In total, VSP was effective with respect to significantly higher $a^*$ values, physicochemical stability, and microbial safety in Hanwoo packaging (p<0.05).