볶은 옻씨를 첨가한 차 음료의 품질특성 및 저장 중 산화방지 활성의 변화량 측정
While manufacturing blended tea, the temperature for pan-firing Rhus verniciflua seed (RVS) is important. The pan-firing duration was fixed to 15 minutes according to a sensory test. We then prepared four types of blended teas with varied ratios of RVS; all the four types showed similar pH, °Bx, and...
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| Published in | Han'guk Sikp'um Kwahakhoe Chi = Korean Journal of Food Science and Technology Vol. 49; no. 3; pp. 318 - 323 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | Korean |
| Published |
Seoul
한국식품과학회
01.06.2017
Korean Society of Food Science & Technology |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0367-6293 2383-9635 |
| DOI | 10.9721/KJFST.2017.49.3.318 |
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| Abstract | While manufacturing blended tea, the temperature for pan-firing Rhus verniciflua seed (RVS) is important. The pan-firing duration was fixed to 15 minutes according to a sensory test. We then prepared four types of blended teas with varied ratios of RVS; all the four types showed similar pH, °Bx, and hunter’s color values with no significant difference. According to the sensory test, A-type tea blended with RVS was the most preferred. The antioxidant activity of A-type blended tea was evaluated during storage. The changes in the total polyphenol, total flavonoid, and antioxidant activity by DPPH and ABTS assays were monitored during storage at 4, 25, and 40°C for 28 days. After 28 days of storage, values for total polyphenol content, total flavonoid content, and antioxidant activity were similar to the initial values. Moreover, microbial growth was not observed during that period. |
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| AbstractList | While manufacturing blended tea, the temperature for pan-firing Rhus verniciflua seed (RVS) is important. The pan-firing duration was fixed to 15 minutes according to a sensory test. We then prepared four types of blended teas with varied ratios of RVS; all the four types showed similar pH, $^{\circ}Bx$, and hunter's color values with no significant difference. According to the sensory test, A-type tea blended with RVS was the most preferred. The antioxidant activity of A-type blended tea was evaluated during storage. The changes in the total polyphenol, total flavonoid, and antioxidant activity by DPPH and ABTS assays were monitored during storage at 4, 25, and $40^{\circ}C$ for 28 days. After 28 days of storage, values for total polyphenol content, total flavonoid content, and antioxidant activity were similar to the initial values. Moreover, microbial growth was not observed during that period. 본 연구는 옻씨의 볶음 시간을 선정함으로써 관능적 특성을 분석하고, 볶은 옻씨를 함유한 차 음료를 제조하여 품질특성을 조사하였다. 또한, 저장기간에 따른 항산화활성 변화를 알아보고자 저장 온도(4, 25 및 $40^{\circ}C$)를 달리하여 28일간 저장하면서 7일 간격으로 항산화 활성을 측정하여 저장시 발생할 수 있는 변화를 살펴보았다. 차 음료를 제조하고자 기호도 조사를 통하여 가장 높은 점수를 받은 15분 볶은 옻씨로 결정되었다. 선정된 볶음군을 함유한 차 음료에 대한 pH는 A 차 음료는 7.12, B 차 음료는 7.21, C 차 음료는 7.20, D 차 음료는 7.38로 나타났다. 당도는 모든 차 음료에 대하여 $0.1-0.2^{\circ}Bx$의 범위로 나타났다. L값은 A 차 음료는 16.90, B 차 음료는 17.62, C 차 음료는 18.85, D차 음료는 18.96로 나타났고, a값은 A 차 음료는 -0.12, B 차 음료는 -0.45, C 차 음료는 -0.22, D 차 음료는 -1.17로 나타났으며 b값은 A 차 음료는 8.84, B 차 음료는 7.45, C 차 음료는 6.03, D 차 음료는 6.40으로 옻씨 자체의 색이 엷은 적갈색을 보이며 옻씨의 추출물 색으로 가까운 황색을 나타낸 A 차 음료가 가장 비슷한 값을 나타내었다. 또한, 관능검사를 통하여 맛과 전체적인 바람직성에서 A 차 음료가 높은 점수로 평가되어졌다. A차 음료에 대하여 저장 중 총 폴리페놀 및 총 플라보노이드 함량 변화는 시간이 경과함에 따라 조금 감소하였다가 증가하였지만 초기값과 비교시 비슷한 값을 나타내었다. 저장기간과 온도에 따라 관계없이 비슷한 값을 나타내어 항산화력도 높을 것으로 보인다. 저장 중 DPPH 라디칼 및 ABTS 라디칼 소거활성은 저장 기간이 길어질수록 큰 변화가 없었으며 초기값과 비교시 유의적인 차이가 없었다. 저장 중 미생물학적 안전성 검사에서는 모든 시료에서 미생물이 검출되지 않아 저장 안전성을 유지하는 것으로 나타났다. While manufacturing blended tea, the temperature for pan-firing Rhus verniciflua seed (RVS) is important. The pan-firing duration was fixed to 15 minutes according to a sensory test. We then prepared four types of blended teas with varied ratios of RVS; all the four types showed similar pH, °Bx, and hunter’s color values with no significant difference. According to the sensory test, A-type tea blended with RVS was the most preferred. The antioxidant activity of A-type blended tea was evaluated during storage. The changes in the total polyphenol, total flavonoid, and antioxidant activity by DPPH and ABTS assays were monitored during storage at 4, 25, and 40°C for 28 days. After 28 days of storage, values for total polyphenol content, total flavonoid content, and antioxidant activity were similar to the initial values. Moreover, microbial growth was not observed during that period. While manufacturing blended tea, the temperature for pan-firing Rhus verniciflua seed (RVS) is important. The pan-firing duration was fixed to 15 minutes according to a sensory test. We then prepared four types of blended teas with varied ratios of RVS; all the four types showed similar pH, oBx, and hunter’s color values with no significant difference. According to the sensory test, A-type tea blended with RVS was the most preferred. The antioxidant activity of A-type blended tea was evaluated during storage. The changes in the total polyphenol, total flavonoid, and antioxidant activity by DPPH and ABTS assays were monitored during storage at 4, 25, and 40oC for 28 days. After 28 days of storage, values for total polyphenol content, total flavonoid content, and antioxidant activity were similar to the initial values. Moreover, microbial growth was not observed during that period. KCI Citation Count: 1 |
| Author | 문혜정(Hye-Jung Moon) 김수환(Su-Hwan Kim) 진희연(Hee-Yeon Jin) 허창기(Chang-Ki Huh) 이상천(Sang-Cheon Lee) |
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| SubjectTerms | Antioxidants Firing Flavonoids Microorganisms Rhus verniciflua Seeds Tea 식품과학 |
| Title | 볶은 옻씨를 첨가한 차 음료의 품질특성 및 저장 중 산화방지 활성의 변화량 측정 |
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