• 한국식생활문화학회지
• /
• 제37권1호
• /
• pp.90-98
• /
• 2022

This study investigated the physicochemical and antioxidant properties of sponge cakes made using different amounts (2 and 4%) of barley sprout powder (BSP) and green tea powder (GTP), respectively. The results showed that the baking loss rate of GS2 (2% green tea) and GS4 (4% green tea) was 12.39% and 11.96%, respectively in the green tea addition group, which was higher than that of the barley sprout group, but significantly lower than that of the control group at 13.34% (p<0.05). The specific volumes of the sponge cake containing barley sprout and green tea 2% and 4% were between 2.84-2.95 mL/g, which was significantly higher compared to the control group at 2.69 mL/g (p<0.05). The sugar content was significantly higher in the control group and the barley sprout addition group at 2.30°Brix (p<0.05). As for the volume index, the control group with the lowest value at 13.43 showed a significant difference compared to the addition groups. The volume index significantly decreased as the addition amount increased, measuring 14.07 in BS4 (4% BSP) compared to 14.87 of BS2 (2% BSP) in the barley sprout group (p<0.05). In cross-sectional photography, the color became darker than that of the control group as the quantum of additives increased. In terms of the DPPH and ABTS radical scavenging activity, the total phenol content, and total flavonoid content, the groups with the addition of barley sprout and green tea showed higher antioxidant activity than the control group (p<0.05).

• 한국식품영양과학회지
• /
• 제35권6호
• /
• pp.734-737
• /
• 2006

다양한 생리활성을 함유한 보리잎을 이용하여 관능적으로 우수한 보리잎 분말차를 제조하는 방법을 개발하고 분말차의 기능성 성분함량을 분석하였다. 다양한 실험조건으로 보리잎차를 제조한 후 관능적으로 우수한 제조조건을 선발하였다. 그 결과 보리잎 분말차를 제조하는 공정은 보리잎을 절단, 세척하는 전처리 공정, $100^{\circ}C$에서 30초간 가열하는 증열공정, $130^{\circ}C$에서 40분간 처리하는 조유공정, 실온에서 25분간 처리하는 유념공정, $60^{\circ}C$로 30분간 덖음하는 중유공정, $55^{\circ}C$에서 25분간 재덖음하는 정유공정, $60^{\circ}C$로 20분간 건조하는 건조공정, $85^{\circ}C$에서 20분간 회전 덖음하는 가향공정 및 분쇄공정으로 최적화되었다. 이상의 방법으로 제조된 보리잎 분말차는 식이섬유 33.8%, 아미노산 12.9%, 무기질 4.7%, ${\beta}-carotene$ 6.9 mg% 등이 함유되어 있었다.

• 한국축산식품학회지
• /
• 제36권5호
• /
• pp.626-634
• /
• 2016

This study was conducted to compare the physicochemical, microbiological and antioxidant activities of sun-dried venison amended with green tea powder (T1-3: 0, 0.5, and 1%) and Hanwoo beef jerky. Sliced beef and venison shank were marinated and sun-dried at 28-30℃ and 30-35% RH for 3.5 h. The venison jerky had a higher ash and protein content, and lower moisture and fat content than the control (p<0.05). T3 (venison+green tea powder 1%) showed a lower a_w than all other samples during storage for 10 and 20 d (p<0.05). Hunter’s color a* and b* values of T2 and T3 were lower than those of T1 and the control at day 0 (p<0.05). Saturated fatty acid was significantly higher in T1, while PUFA was higher in T2 and T3 (p<0.05). Overall sensory scores of venison jerky were lower than those of the control, except for T2, which had a similar color, flavor, saltiness and acceptability as the control. T2 and T3 showed a significant decrease in TPCs after storage for 20 d (p<0.05). The TBARS values of T3 jerky were lower than those of other jerky samples (p<0.05).

• 농업과학연구
• /
• 제49권4호
• /
• pp.1055-1066
• /
• 2022

This study investigated quality characteristics of chicken stock with added plum extract (PE) and green tea powder (GP) stock during storage. Plum extract (0, 0.5, 1, 3%) and green tea powder (0, 0.5, 1, 3%) were added at three levels. Chicken stock was stored at room temperature for 14 days. The pH of the chicken stock decreased significantly as the content of PE and GP increased (p < 0.05). The group with 3% plum extract added showed significantly lower pH values (p < 0.05). Total numbers of microorganisms (TMC) showed significant differences according to the storage period (p < 0.05), where the groups with PE and GP added showed lower TMC values than the control group, This indicates that PE and GP could inhibit the growth of microorganisms. The addition of 3% PE or GP decreased lipid oxidation (TBARS) and protein deterioration (VBN) values. In sensory test, the results showed that adding PE or GP has a positive effect on storage characteristics of chicken stock. The addition of PE rather than GP is effective not only in improving sensory evaluation, but also in minimizing changes in quality by suppressing lipid oxidation and protein deterioration during storage. In conclusion, 3% PE addition was found to be the most optimal supplementation choice for increasing the storability of chicken stock.

• 한국분말야금학회:학술대회논문집
• /
• 한국분말야금학회 2003년도 international symposium on advanced powder metallurgy
• /
• pp.71-72
• /
• 2003

• 한국식품영양학회지
• /
• 제18권4호
• /
• pp.349-356
• /
• 2005

가루녹차를 첨가한 액상 요구르트를 제조하기 위하여 가루녹차를 농도별($0.5\%,\;1.0\%\;1.5\%\;2.0\%$로 첨가하여 발효시킨 액상 요구르트의 저장성과 관능적 특성을 조사하였다. 가루녹차 첨가 액상 요구르트를 무첨가구와 함께 $4^{\circ}C$와 $20^{\circ}C$에서 20일 동안 저장한 결과유산균수의 경우 $4^{\circ}C$에서는 가루녹차 첨가구는 $2.1\times10^8\~6.2\times10^8$ CFU/mL, 무첨가구는 $8.3\times10^8$ CFU/mL이었고, $20^{\circ}C$에서는 가루녹차 첨가구는 $4.2\times10^3\~8\times10^5$ CFU/mL, 무첨가구는 $7.7\times10^5$ CFU/mL이었다. $4^{\circ}C$에서 가루녹차 첨가구는 저장 기간 동안 무첨가구와 큰 차이 없이 유사한 균수를 유지하였으나, $20^{\circ}C$에서 저장하였을 때에는 $4^{\circ}C$에서 저장한 경우보다 낮은 유산균 수를 보였다. 그리고 $4^{\circ}C$에서 pH는 $4.16\~4.22$, 적정산도는 $0.792\~0.881\%$이었고, $20^{\circ}C$에서는 pH는 $3.82\~3.92$, 적정산도는 $1.057\~ 1.174\%$이었다. $4^{\circ}C$에서 저장하는 동안 가루녹차 첨가구의 pH와 적정산도는 변화가 크지 않았으나, $20^{\circ}C$에 저장하는 동안에는 젖산의 생성량이 크게 증가하여 매우 높은 산도를 나타내었다. 가루녹차 첨가 액상 요구르트는 $4^{\circ}C$에서 20일까지 법적 유산균수($1.0\times10^8$ CFU/mL 이상)를 충족하였으며, pH와 적정산도도 요구르트의 바람직한 pH와 적정산도의 범위에 대체적으로 일치하여 유지되었다. 관능 검사 결과 가루녹차 $0.5\%$ 첨가구가 향미, 단맛, 입안 느낌, 후미에 있어서 유의적인 차이를 보이며 가장 높은 평가를 받았으며, 색, 전체적인 기호도에 있어서도 비교적 높은 점수를 얻어 관능적으로 높은 기호도를 나타내었다. 올리고당 첨가량은 $20\%$ 첨가시 단맛, 후미, 전체적인 기호도에서 가장 좋게 평가되었다. 따라서 가루녹차 $0.5\%$와 올리고당 $20\%$의 첨가가 가루녹차 첨가 액상 요구르트 제조를 위해 가장 적합한 것으로 사료되었다.

• 한국식품위생안전성학회지
• /
• 제10권1호
• /
• pp.41-43
• /
• 1995

Dry rehydratable film (Petrifilm) method was compared with the standard pate count (SPC) method for estimation of total bacteria in ginseng products. Ginseng products (7 sample) was analyzed for total count by the SPC, and Petrifilm methods, respectively. In the case of ginseng tea, ginseng extract, ginseng extract pill, ginseng powder capsule, and ginseng extract tea, they showed non-significant values at the 1% level. However, the values of ginseng powder and tablet showed significant at the 1% level. These results generally indicate the suitability of the dry rehydratable film methods as alternatives to the SPC method for estimating of total bacteria in ginseng product samples except to ginseng powder and ginseng tablet.

• 한국지역사회생활과학회지
• /
• 제18권1호
• /
• pp.107-129
• /
• 2007

The purpose of this research is to understand features of the present condition of green tea food by analyzing the data on tea foods presented in Korean literature after the 1990's (two articles from professional journals related to tea culture, and three books related to tea food). The main conclusions are as follows: 1. It is found from separating 354 different kinds of green tea foods into three categories - main dishes, side dishes and desserts - that there are 137 kinds of side dishes, 123 kinds of desserts, and 94 kinds of main dishes from green tea foods. Upon dividing these into smaller categories, there are 40 rice dishes, 27 noodle dishes, 18 gruel dishes and 9 dumpling dishes found among the main dishes; 26 pan fried dishes, 24 potherb/cooked potherbs dishes, 17 deep-fried dishes, 15 soup/broth dishes, 14 grilled dishes, 11 smothered dishes, 10 hard -boiled/fried dishes, 6 kimchi dishes, 4 dried food dishes, 4 jelly dishes, 4 stew dishes, and 2 raw fish dishes among the side dishes; and 37 snack dishes, 36 punch/drink dishes, 26 rice cake dishes, and 24 bread dishes are found among the desserts. 2. There are 201 kinds of green tea foods using powders, 107 kinds using wet tea leaves, 61 kinds using dry tea leaves, 57 kinds using water of drawn tea, and 17 kinds using wild tea leaves, according to analysis of teas used for green tea foods. There is more use of powder for snacks, punch and drinks, rice cakes, noodles, and breads, and more use of wet tea leaves for rice, pan fried food, and potherb/cooked potherb dishes. It is also shown that there is more use of water from drawn tea for rice, punch and drinks, noodles, and gruels, more use of dry tea leaves for snack, rice, breads, and more use of wild tea leaves for deep-fried and pan fried kinds of tea foods.

• Applied Biological Chemistry
• /
• 제36권5호
• /
• pp.321-325
• /
• 1993

미각의 다양화 및 고급화에 부응하면서 추출하기에 간편하도록 tea bag으로 낱포장한 멸치 복합 분말의 효율적인 저장방법에 대하여 조사하였다. 멸치 복합 분말의 일반성분은 조단백질 함량이 54.7%로 절반 이상을 차지하였고, 조회분의 함량이 15.6%였으며, 조지방 함량은 2.9%로 낮았다. 멸치 복합 분말의 저장 중 pH는 증가하였고, 휘발성염기질소 함량은 감소하였으며, 제품간 이들의 증감폭은 탈산소제 봉입포장한 제품이 함기포장한 제품보다 훨씬 낮았다. TBA값, 과산화물값, 카르보닐값 및 지방산조성 등의 유지특가와 색조 및 갈변도는 저장기간이 경과함에 따라 증감이 있었는데 그 증감폭은 함기포장한 제품에 비하여 탈산소제 봉입포장한 제품의 경우가 훨씬 적었다. 이상의 결과로 미루어 볼 때 멸치 복합 분말을 제조하고 tea bag포장한 후 탈산소제를 봉입하여 플라스틱 필름에 포장한 다음 저장함으로써 저장 중 품질저하를 효과적으로 억제할 수 있었다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제19권8호
• /
• pp.1190-1196
• /
• 2006

This experiment was carried out to investigate the effects of Korean, Japanese and Chinese green tea on laying performance and egg quality in hens. A total of 168 "Tetran Brown" hens aged 40 weeks were assigned to 7 treatments in a completely randomized design. Each treatment had 4 replicates accommodating 6 layers per replication. The seven dietary treatments were: 1) control diet with no green tea added, 2) diet containing 1.0% Korean green tea (1.0% KGT), 3) diet containing 2.0% Korean green tea (2.0% KGT), 4) diet containing 1.0% Japanese green tea (1.0% JGT), 5) diet containing 2.0% Japanese green tea (2.0% JGT), 6) diet containing 1.0% Chinese green tea (1.0% CGT), and 7) diet containing 2.0% Chinese green tea (2.0% CGT). Egg production rate of the layers fed diets containing 1.0 or 2.0% green tea powders were significantly increased compared to that of the control (p<0.05). The egg weight of layers was significantly reduced in layers fed 1.0% CGT (p<0.05). The feed intake was significantly decreased in KGT and CGT groups at 2.0% inclusion levels (p<0.05). The egg shell thickness and shape index of JGT treatment was significantly lower than that of the control (p<0.05). There were no significant differences in albumen index, yolk index and Haugh unit of eggs for layers fed diets containing green tea powders regardless of origin (p>0.05). Green tea feeding to layers tended to reduce the overall cholesterol content of egg yolk. Particularly, 1.0 or 2.0% CGT significantly depressed the total cholesterol content of egg yolk (p<0.05). In conclusion, incorporation of 1.0 or 2.0% Korean, Japanese and Chinese green tea into layer diets regardless of origin had favorable effects on laying performance and egg quality profiles. Among the three green tea sources, the Chinese green tea powder had the highest reducing effect on cholesterol content in egg yolk.