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보문 : 신령버섯(Agaricus brasiliensis) 자실체 추출 조다당류의 항암 및 면역증강 작용
차윤정 ( Youn Jeong Cha ),김정화 ( Jeong Hwa Kim ),이태수 ( Tae Soo Lee ),이우윤 ( U Youn Lee ) 한국균학회 2011 韓國菌學會誌 Vol.39 No.1
Agaricus brasiliensis, one of edible mushroom belonging to Basidiomycota, has been used for curing gastric ulcer and stomach cancer of human beings and also known to have good inhibitory effects on sarcoma 180 and Ehrlich carcinoma of mice. Neutral saline soluble (0.9% NaCl), hot water soluble and methanol soluble substances (hereinafter referred to Fr. NaCl, Fr. HW and Fr. MeOH, respectively) were prepared from fruiting body of the mushroom. β-glucan and total protein contents were identify from fractions of edible mushrooms extract. The β-glucan and protein contents of all fractions of the mushrooms ranged from 21.54~32.31% and 0.16~9.34%, respectively. In vitro cytotoxicity tests, crude polysaccharides were not cytotoxic against cancer cell lines such as Sarcoma 180, HT-29, NIH3T3 and RAW 264.7 at the concentration of 10~2000 μg/ml. Intraperitoneal injection with crude polysaccharides exhibited life prolongation effect of 18.8~50.6% in mice previously inoculated with Sarcoma 180. Fr. HW increased the numbers of spleen cell by 1.2 fold at the concentration of 200 μg/ml compared with control. Fr. MeOH and Na improved the immuno-potentiating activity of B lymphocyte by increasing the alkaline phosphatase activity by 1.6 fold compared with control at the concentration of 50~500 μg/ml. Fr. Na generated 15.9 μM of nitric oxide (NO) when cultured with RAW 264.7 at the concentration of 200 μg/ml, while lipopolysaccharide, a positive control, produced 3.7 μM. The Fr. NaCl, Fr. HW and Fr. MeOH increased the secretion of TNF-α, IL-1β, Il-2 and IL-6 by 2.2 times compared with the control group. Fr. Na increased the numbers of peritoneal exudate cells by 4 folds at the concentration of 50mg/kg compared with control. Circulating leukocytes increased by 2.7 folds when Fr. HW from A. brasiliensis was inoculated at the concentration of 50 mg/kg body weight. The hematological and blood chemical analysis of the 3 fractions did not show any difference in blood compositions and enzyme activities compared with the control group (p<0.05). Therefore, the experimental results suggested that crude polysaccharides extracted from A. brasiliensis contain antitumor and immuno-potentiating activities against Sarcoma 180 in ICR mice.
친수성 이온성 액체를 이용한 수상이성분계에서의 아크릴산 추출 평형
이용화 ( Yong Hwa Lee ),이우윤 ( Woo Youn Lee ),김기섭 ( Ki Sub Kim ),홍연기 ( Yeon Ki Hong ) 한국화학공학회 2014 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.52 No.5
본 연구에서는 아크릴산 추출을 위한 효과적인 분리공정으로서 모폴린계 이온성 액체/K2HPO4에 의한 수상이성분계를 적용하여 수상이성분계 형성 특성 및 아크릴산 추출 효율에 대한 모폴린계 이온성 액체의 양이온 알킬사슬 길이의영향을 고찰하였다. 실험 결과 K2HPO4 수용액에 적정량의 모폴린계 이온성 액체를 첨가함에 따라 안정한 수상이성분계가 형성됨을 확인할 수 있었으며 이성분계 형성능력은 [HMMor][Br]>[OMMor][Br]>[BMMor][Br]> [EMMor][Br]의순서로 나타났다. K2HPO4 수용액을 기준으로 모폴린계 이온성 액체의 수상이성분계 형성 능력은 기존의 이미다졸계와 큰 차이가 없었으며 친수성알콜/K2HPO4와 비교했을 경우에는 적은양으로도 수상이성분계 형성이 가능하였다. 모폴린계 이온성 액체를 이용한 수상이성분계 추출에 있어 아크릴산 추출 효율은 50~90%의 범위를 가지며 이 값들은이미다졸계와 큰 차이가 없었다. 모폴린계 이온성 액체가 이미다졸계 이온성 액체에 비해 경제적으로 생산할 수 있으므로 모폴린계 이온성 액체와 K2HPO4로 구성된 수상이성분계는 아크릴산을 포함한 각종 생물공정에 의한 제품 분리에 효과적임을 알 수 있었다. As an effective method for extraction of acrylic acid, aqueous two-phase systems based on morpholiniumionic liquids were used in this study. Effects of the alkyl chain length of cation in morpholinium ionic liquids on phasediagram and extraction efficiencies were investigated. Experimental results show that aqueous two phase systems can beformed by adding appropriate amount of morpholinium ionic liquids to aqueous K2HPO4 solutions. It can be found that theability of morpholinium ionic liquids for phase separation followed the order [HMMor][Br]>[OMMor][Br]>[BMMor][Br]>[EMMor][Br]. There was little difference between binodal curves of imidazolium ionic liquids and those of morpholiniumionic liquids. 50~90% of the extraction efficiency was observed for acrylic acid by aqueous two phase extraction ofacrylic acid with morpholinium ionic liquids. It can be concluded that morpholinium ionic liquids/K2HPO4 were effectivefor aqueous two phases extraction of acrylic acid comparing to imidazolium ionic liquids/K2HPO4 systems becauseof their lower cost.