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차재윤,김청태,조용진 한국식품과학회 2020 Food Science and Biotechnology Vol.29 No.3
Extraction process was optimized for maximizing the contents of functional compounds from ginger using response surface methodology which applied Box– Behnken design. Ginger extracts were obtained at 3 levels of ethanol concentration (0–70%) of solvent, extraction time (30–90 min), and extraction temperature (50–70 C) as independent variables. The 6-shogaol and 6-gingerol of the extracts were analyzed through HPLC. The significance of each term in polynomial regression equations was evaluated on functional compound contents and extraction yield in extraction process. It was verified that the regression equations were accurate with high determination coefficients over 0.892. The optimum ethanol concentration, extraction time, and extraction temperature for extraction yield were determined as 41.38%, 78.16 min, and 70 C, respectively. The functional compound contents predicted at optimal conditions were as follows: 39.55 mg/ g at 70%, 70 min, and 70 C for 6-gingerol, 2.44 mg/g at 70%, 51.90 min, and 62.29 C for 6-shogaol.
감마선 조사된 무기질 함유 쿠키의 제조 방법 및초음파 처리 시간에 따른 Luminescence 분석 특성
김병근,김청태,이진원,이광현,김재경,송범석,김재훈,이주운,권중호 한국방사선산업학회 2013 방사선산업학회지 Vol.7 No.1
Photostimulated luminescence (PSL) and thermoluminescence (TL) analyses wereapplied to identify the cookie molds mixed with 2 mg of 10 kGy-irradiated minerals according tocookie processing methods and sonication time (0~60 min) for mineral separation. PSL analysisshowed that photon counts of cookies, dried or baked, ranged intermediate levels between thelower and upper threshold (700~5,000 counts/60 s), thereby showing its unsuitablility for screeningof irradiated cookie. The TL glow curve intensities, measured according to mineral separationtime (5, 10, 20, 40 and 60 mins) from the cookies using a sonicator, were high enough to identifyirradiation status and significantly increased with the time in dried cookies. Those of baked cookies,however, were relatively low and not linearly increased with the time, but still possible to identifythem (p⁄0.05).