누엔푸끙, My Tuyen Thi Nguyen, Jae-Han Kim, Soon-Taek Hong, Jong-Tae Park
언어
영어(ENG)
URL
https://www.earticle.net/Article/A390429
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원문정보
초록
영어
In this study, a novel sugar fatty acid ester (SFAE), maltoheptaose-palmitate ester (G7-PA), was synthesized using commercially available 3 lipases, free or immobilized form, as catalysts. The central composite design of RSM based on three-factor (DMSO concentration, the molar ratio of substrates, and enzyme amount) at five-level was used to optimize the G7-PA synthesis. Among these lipases, the immobilized CALB with the greatest esterification/hydrolysis activity ratio was the best enzyme for the G7-PA synthesis. The optimal conditions for achieving 92.75% conversion yield was determined as 10% DMSO, 0.2 of G7/PA molar ratio, 1g of the immobilized CALB per 0.128 g of PA at 60°C for 24 h. G7-based sugar esters using capric (C10:0), lauric (C12:0), myristic (C14:0) acid as substrates were also synthesized at the same optimal condition. Among the G7-FAEs, G7-PA exhibited improved properties as a biosurfactant in O/W emulsion compared with a commercial sucrose-PA (S-PA). However, emulsions prepared with the other G7-FAEs were unstable at pH 7. At the low surfactant concentration (0.1%), G7-PA emulsion exhibited a droplet distribution similar to 0.2% surfactant condition, while S-PA emulsion was quickly destabilized. Intriguingly, the G7-PA showed better emulsifying properties than the S-PA at the acidic condition (pH 3). Flocculation and phase separation observed at the S-PA emulsion, but that of G7-PA was stable for 7-day. In thermostability tests, G7-PA and S-PA both were stable at the pasteurization and the boiling treatment. Conclusively, the novel bio-surfactant G7-PA could expand the application fields of sugar esters based on its superior properties.
My Tuyen Thi Nguyen [ Department of Food Nutrition, Chungnam National University,College of Agriculture, Can Tho University, Can Tho City 900000, Vietnam ]
Jae-Han Kim [ Department of Food Nutrition, Chungnam National University, Daejeon 34134, Korea ]
Soon-Taek Hong [ Department of Food Science and Technology, Chungnam National University, Daejeon 34134, Korea ]
Jong-Tae Park [ CARBOEXPERT Inc., Daejeon 34134, Korea ]
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.
간행물
간행물명
한국당과학회 학술대회
간기
연간
수록기간
2006~2022
십진분류
KDC 517DDC 614
이 권호 내 다른 논문 / 한국당과학회 학술대회 2020 한국당과학회 연례학술대회(온라인)