In this work, the specificity of glycosyl donors was studied to understand the material balance analysis on the products using a commercial CGTase. 4-hydroxyphenyl α-glucopyranoside (α-arbutin) and 4-hydroxyphenyl β-glucopyranoside (β-arbutin) were produced by transglycosylation reactions catalyzed by cyclodextrin glucanotransferase (CGTase) from sp.(Toruzyme®3.0L). The reactions were practiced in an aqueous system containing hydroquinone (HQ) and starch as acceptor and donor substrate molecules respectively. The conditions for the synthesis of hydroquinone glucoside (α-arbutinorβ-arbutin) were 20 mM hydroquinone, starch (3%,w/v) in pH5 and 0.04 mg/ml toruzyme at 75°C for 6 h. The transfer efficiency of hydroquinone glycosylation was 17% respectively, when starch was employed as donor substrates. The major glycoside product was identified as hydroquinone-1-O-d-glucopyranoside (arbutin) on the basis of mass spectrometric analysis. The highest molar yield of arbutin (17.0%) was obtained when starch was used as the donor substrate. At room temperature the solubility of arbutin in water was determined to be 12.8 g/100 ml which is approximately 1.8 fold higher than that of hydroquinone.
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.