• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.295-295
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• 2017

Rice (Oryza sativa L.) is one of the most important food crops in the world. The eating quality of cooked rice is the most important trait japonica rice breeding in Korea. Rice varieties that produce kernels that are firm and fluffy after cooking are generally favored in countries such as India, Pakistan, and Indonesia. Whereas varieties with kernels that maintain its shape, glossiness, savory odor, stickiness, and tenderness when cooked are preferred in Korea. This study analyzed the major physicochemical components of rice grain associated with the eating quality of 20 japonica rice varieties. Physicochemical components such as the amylose content, protein content, amylographic characteristics of polished rice, and texture of cooked rice were tested using a Tensipresser as alternative indirect methods in determining rice eating quality. Evaluation of eating quality of cooked rice using sensory test was conducted with 20 well trained members. The 20 rice varieties in different eating quality showed amylose contents of 17~20%. The amylose content of rice varieties had negative correlation with peak viscosity, however positive correlation with setback viscosity was observed. The stickiness and adhesiveness of cooked rice showed correlation with the amylose content and amylopectin chain length distribution. Rice varieties with good eating quality showed less retrogradation of cooked rice and higher hot viscosity of rice flour in amylogram.

• 한국식품과학회지
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• 제27권6호
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• pp.885-890
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• 1995

쌀 10품종(조생종 2품종, 중생종 4품종, 중만생종 4품종)의 수분함량에 따른 밥의 관능적 특성을 비교하였다. 관능적 특성중 덩어리지는 정도, 경도와 질음은 모든 품종에서 수분함량과 유의성을 보였다. 밥의 바람직한 정도는 수분함량 66.5%에서 가장 좋았으며, 최적 수분함량으로 취반한 밥의 관능 특성은 이취, 윤기와 색깔에서 품종간 유의성을 보였고, 단 향기, 덩어리지는 정도, 단 맛과 텍스처(경도, 차질음, 질음) 그리고 바람직한 정도는 유의성이 없었다.

• 한국축산식품학회지
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• 제44권3호
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• pp.662-683
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• 2024

Thai-Native×Anglo-Nubian goat meat cooked by grilling (GR), sous vide (SV), and microwave (MW), was compared to fresh meat (Raw) in terms of flavor development. Non-volatile [i.e., free amino acids, nucleotide-related compounds, taste active values (TAVs) and umami equivalency, sugars, lipid oxidation, Maillard reaction products] and volatile compounds, were investigated. Notably, inosine monophosphate and Glu/Gln were the major compounds contributing to umami taste, as indicated by the highest TAVs in all samples. Raw had higher TAVs than cooked ones, indicating that heat-cooking removes these desirable flavor and taste compounds. This could be proportionally associated with the increase in aldehyde, ketone, and nitrogen-containing volatiles in all cooked samples. GR showed the highest thiobarbituric acid reactive substances (1.46 mg malonaldehyde/kg sample) and browning intensity (0.73), indicating the greatest lipid oxidation and Maillard reaction due to the higher temperature among all cooked samples (p<0.05). In contrast, SV and Raw exhibited similar profiles, indicating that low cooking temperatures preserved natural goat meat flavor, particularly the goaty odor. The principal component analysis biplot linked volatiles and non-volatiles dominant for each cooked sample to their unique flavor and taste. Therefore, these findings shed light on cooking method selection based on desirable flavor and preferences.

• 한국동물위생학회지
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• 제30권2호
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• pp.283-286
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• 2007

Fungus generally doesn't produce toxic or harmful substances so it has low chances to cause food poisoning. However it leads to change appearance, odor and characteristics of the contaminated foods and result in sanitary risk problems. Therefore the contamination of fungi should be prevented since they are not proper for human consumption. Green fungi with white outline raised from the air cell of cooked eggs which were collected by Gyeongi Livestock Veterinary Service in August, 2006. The results came out after the cultivation using Sabouraud's Dextrose Agar(SDA). The conidium appeared white and monospore, the shape of colony was round and oval. Conidiophore was brown and granulated and wrinkles and formed. It was confirmed as Aspergillus nidulans based on the dying using Lactophenol cotton blue, the observation of septum and vesicle from the grown spores, and rDNA sequencing.

• 한국식생활문화학회지
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• 제32권4호
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• pp.323-331
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• 2017

This study examined the quality characteristics of Jeung-pyeon made with wet non-glutinous rice flour and rice wine. The samples of Jeung-pyeon were prepared with different ratios of cooked purple sweet potato (0, 3, 6, 9, and 12%) to analyze the water content, sugar content, pH, chromaticity, texture characteristics, and sensory evaluation. No significant difference in water content, sugar content, and springiness was observed among the 5 samples. The pH and volume showed the highest level at 0%. The L-value and b-value decreased while the a-value increased. The hardness, chewiness, and gumminess were highest at 9% and lowest at 12%. The extent of violet chromaticity and pore size were optimal in 9%. In addition, 9%-added purple sweet potato showed the highest score of odor, taste, texture, and overall acceptability. In conclusion, the optimal addition for the highest acceptability of cooked purple sweet potato was 9%.

• 한국축산식품학회지
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• 제42권2호
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• pp.332-340
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• 2022

The objective of this study was to determine the optimal cooking time by considering the cooking loss, shear force, and off-odor reduction of pork large intestines. Commercial pork large intestines were purchased, quartered perpendicularly, and cooked in boiling water for 40, 120, 180, and 240 min. Cooking loss of the samples increased after 240 min of cooking (10.92, p<0.05) while shear force value was lower at 240 min (4.45) compared to that at other cooking times (p<0.001). The amount of major volatile organic compounds showed a decreasing trend with increasing cooking time. In particular, the amount of methyl pentanoate (17,528.71) and methyl isobutyrate (812.51), compounds with a relatively low odor threshold, decreased significantly after 120 min of cooking and no change was observed thereafter (p<0.05). In addition, the amount of 2-pentanol (3,785.65) and 1-propanol (622.26), possibly produced by lipid oxidation, significantly decreased at the same cooking time (p<0.001). In the principal component analysis, only the 40 min cooking time was significantly different from other cooking time by high amounts of 1-propanol, 2-pentanol, and methyl isobutyrate. In conclusion, in the present study, the optimal cooking time for pork large intestines was 120 min in terms of off-odor reduction, cooking loss, and shear force.

• 한국식품영양학회지
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• 제13권1호
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• pp.21-27
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• 2000

In order to investigate the changes of rice qualities during 4 years storage of paddy in warehouse of normal temperature condition. As storage period go by, head ratio was deduced and broken rice was increased according as a change of temperature during the long term storage. A color of rice was became more dark gray than that of entering time as L value was decreased from 64.07 to 61.62 a 4 years late. As a results of studies on the cooking quality of milled rice, water uptake ratio and expanded volume were increased in proporation to storage period, wherease total solids and iodine blue value were decreased. In the characteristic of texture of cooked rice, viscosity/hardness ratio(-H/H) had a decreasing tendency, while adhesiveness and cohesiveness increased with increased storage time. The qualities of cooked milled rice studied were sensory attributies of odor, taste, stickiness and appearance which were evaluvated by multiple comparsion method. The sensory results showed that all of descriptions were deterirated with a increased storage period. The taste and stickiness were changed from good score to bad score a 2 years later.

• 한국식품조리과학회지
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• 제7권2호
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• pp.7-18
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• 1991

This study was experimented saccharification process added malt extract solution into cooked sweet potato and potato with time, temperature and was tested reducing sugar changes, structural changes, pH and sensory evaluation about cooked shik-hae of rice, glutinous rice, potato, sweet potato. The results are summarized as follows: 1. Enzyme activity was highest in malt after four days of barley germination at a room temperature. 2. Electronmicroscopic observation indicated that raw starch granule of potato and that of sweet potato was 25-60$\mu\textrm{m}$ and 8~18$\mu\textrm{m}$ in size, respectively and its shape is oval and globular for potato and sweet potato respectively. 3. Reducing sugars were 1,682.6mg and 1,695.6mg in rice and glutinous rice, respectively, for 6-hour-saccharification at $50^{\circ}C$. Reducing sugars were 1,689.1mg and 1,497.8mg in sweet potato, potato, respectively, for 6.hour-saccharification at $60^{\circ}C$. 4. pH variation during saccharification for sweet potato and potato was pH 5.8~5.4. 5. Sensory evalution showed that there were more significant differences in sweety odor, roasted nutty taste and sweety taste of sweet potato among four samples than the other's color shininess.

• 한국식품과학회지
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• 제21권2호
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• pp.197-202
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• 1989

밥과 엿기름 가루의 양을 달리한 식혜와 여러가지 대체 감미료의 상대당도 결정 및 이들의 단독 또는 혼합사용에 따른 특성 평가의 결과는 다음과 같다. 엿기름 가루의 양이 증가함에 따라 식혜의 색 및 엿기름 냄새의 강도가 증가하는 것으로 나타났다. 밥의 양이 증가하는 경우, 식혜의 탁도, 단맛 및 점도의 강도는 큰 반면, 쓴 맛은 오히려 적다고 평가되었다. 환원당량은 밥과 엿기름 가루의 양이 증가함에 따라 증가하는 것으로 나타났다. 10%의 sucrose를 첨가한 식혜의 당도와 같은 단맛을 주는 aspartame, saccharin 및 sorbitol의 상대당도는 sucrose를 기준으로 하여 각각 130, 205 및 0.54배에 해당한다. 사용된 감미료에 따라 단맛은 동일하게 나타났으나, 쓴맛, 식혜 고유의 향미, 점도 및 수렴성은 유의적인 차이를 나타내었다. 또한, 혼합감미료를 첨가한 식혜는 sucrose를 첨가한 식혜와 단맛, 쓴맛 및 수렴성에서 차이를 보였으며, 특히 단맛에서는 현저한 증가를 나타내었다.

• 한국식품영양학회지
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• 제24권4호
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• pp.664-669
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• 2011

아마란스를 새로운 식품 소재로 활용하고자 밀가루에 아마란스 분말의 첨가량을 달리하여 국수를 제조하고, 품질 특성을 조사하였다. 아마란스 분말 첨가한 조리면의 특성인 국수의 무게와 부피는 아마란스 함량이 증가될수록 감소되었으며, 함수율과 국물의 탁도는 아마란스 30% 첨가구를 제외하고는 반대의 경향을 보였다. 아마란스가 첨가된 국수의 조리 전후의 L값은 아마란스 분말의 첨가량이 증가할수록 유의적으로 감소하였고, a값과 b값은 증가하는 경향을 보였다. 또한 아마란스 국수의 L값은 조리전후에 모두 대조구보다 유의적으로 낮게 나타났으며, a값과 b값은 대조구보다 증가하는 경향을 보였다. 조리 전 국수의 텍스쳐 변화는 단단함, 응집성, 껌성, 씹힘성에서 대조구와 유의적인 차이를 나타내며 증가하였고, 부착성은 유의적으로 증가하지 않았다. 아마란스 첨가량이 증가할수록 조리면의 단단함, 껌성과 씹힘성은 유의적으로 감소하였고, 부착성과 탄력성, 응집성은 약간씩 감소하였다. 아마란스를 첨가한 조리면의 관능 검사 결과는 기호도를 제외한 모든 특성에서 대조구보다 유의적으로 높은 값을 나타냈으며, 아마란스 첨가량이 증가할수록 갈색이 짙어지며, 냄새는 곡류의 이취가 증가하는 것으로 나타났다. 전체적인 기호도는 아마란스 20% 첨가구를 가장 선호하는 것으로 나타났다.