Eight minerals (Ca, Cu, Fe, K, Mg, Mn, Na and Zn) were determined in Schizandra chinensis fruits and their infusions in Seoul. The average mineral contents per Schizandra chinensis fruits (100 g) were K (966.08 mg), Mg (87.20 mg), Ca (15.19 mg), Mn (6.19 mg), Fe (3.99 mg), Zn (2.78 mg), Na (2.15 mg) and Cu (0.31 mg) respectively by Inductively Coupled Plasma-Mass Spectrometer. The quantity of K and Zn were found significantly higher in Korean fruits than the Chinese fruits (p < 0.05). The other 6 minerals did not reveal remarkable difference. In the case of processed Schizandra chinensis tea, it had K (217 mg), Mg (20.40 mg), Ca (7.16 mg), Na (2.95 mg), Mn (1.34 mg), Fe (0.95 mg), Zn (0.25 mg) and Cu (0.09 mg) per 100 g respectively. In extraction of Schizandra chinensis fruits, as it took a longer extraction time, and in a powder form rather than a raw form, it had a higher contents of minerals. When a powder type of Schizandra chinensis fruits was extracted for 24 hours at 25℃, the transfer rate appeared with Ca (36.27%), Mn (25.44%), K (22.43%), Zn (21.00%), Na (19.91%), Mg (19.55%) Cu (13.78%) and Fe (6.45%) respectively.

This study investigated the effects of temperature, solvent concentration, and pH on the β-glucan extraction. Oat bran β-glucan was extracted with different extraction conditions, using various combinations of experiment factors, such as temperature (40, 45, 50, 55, and 60℃), ethanol concentration (0, 5, 10, 15, and 20%), and pH (5, 6, 7, 8, and 9). Under the various extraction conditions, β-glucan extraction rate and overall mass transfer coefficient of oat bran β-glucan, and viscosity of oat bran extracts were investigated. As increasing the extraction time, the extraction rate of β-glucan increased. The overall mass transfer coefficient of β-glucan ranged from 3.36×10^-6 to 8.55×10^-6 ㎝/min, indicating the lowest at the extraction condition of 45℃, 15% and pH 8, and the highest at 50℃, 0% and pH 7. It was significantly greater with increasing extraction temperature and decreasing ethanol concentrations of extraction solvent, except for solvent pH. There were positive correlations among the overall mass transfer coefficient, the extraction rate of β-glucan, and the viscosity of extract.

보리차 및 결명자차의 추출 공정중 추출량에 미치는 중요한 인자로는 입자크기, 추출온도, 추출시간, 및 초기시료의 농도 등이 있다. 그리하여 본 연구에서는 상기 추출조건의 변화에 따른 추출량을 측정하여 얻어진 경과를 요약하면 다음과 같다. 1. 추출량 및 추출속도 예측 모델식은 가장 오차가 적은 범위에서 각각의 독립변수에 대한 예측 모델식을 세운후 각 독립변수와의 관계를 종합하여 최종추출량 예측 모델식을 세웠다. 2. 입자의 크기가 총괄 물질전달계수에 미치는 영향은 입자가 작을수록 총괄물질 전달계수가 증가하였다. 3. 추출량은 입자크기가 작을수록, 온도가 높을수록, 시간이 길수록, 초기시료량이 클수록 증가하였다.