메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제21권 제5호
발행연도
2011.1
수록면
519 - 524 (6page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

초록· 키워드

오류제보하기
The correlation between alcoholic fermentation rate, measured as carbon dioxide (CO₂) evolution, and the rate of hydrogen sulfide (H₂S) formation during wine production was investigated. Both rates and the resulting concentration peaks in fermentor headspace H₂S were directly impacted by yeast assimilable nitrogenous compounds in the grape juice. A series of model fermentations was conducted in temperature-controlled and stirred fermentors using a complex model juice with defined concentrations of ammonium ions and/or amino acids. The fermentation rate was measured indirectly by noting the weight loss of the fermentor; H₂S was quantitatively trapped in realtime using a pre-calibrated H₂S detection tube which was inserted into a fermentor gas relief port. Evolution rates for CO₂ and H₂S as well as the relative ratios between them were calculated. These fermentations confirmed that total sulfide formation was strongly yeast strain-dependent,and high concentrations of yeast assimilable nitrogen did not necessarily protect against elevated H₂S formation. High initial concentrations of ammonium ions via addition of diammonium phosphate (DAP) caused a higher evolution of H₂S when compared with a non-supplemented but nondeficient juice. It was observed that the excess availability of a certain yeast assimilable amino acid, arginine, could result in a more sustained CO₂production rate throughout the wine fermentation. The contribution of yeast assimilable amino acids from conventional commercial yeast foods to lowering of the H₂S formation was marginal.

목차

등록된 정보가 없습니다.

참고문헌 (22)

참고문헌 신청

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0