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Structural and Rheological Properties of Sweet Potato Starch Modified with 4-α-Glucanotransferase from Thermus aquaticus

첫 페이지 보기
  • 발행기관
    한국식품과학회 바로가기
  • 간행물
    Food Science and Biotechnology SCIE KCI 등재 SCOPUS 바로가기
  • 통권
    Volume 17 Number 4 (2008.08)바로가기
  • 페이지
    pp.705-712
  • 저자
    Seung Hee Lee, Seung Jun Choi, Sang Ick Shin, Kwan Hwa Park, Tae Wha Moon
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A78353

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원문정보

초록

영어
Sweet potato starch was modified using Thermus aquaticus α-1,4-glucanotransferase (TaaGT), and its structural and rheological properties were investigated. TaaGT-modified starch had a lower amylose level and molecular weight than raw starch. The chain length distribution showed an increased number of short and long branched chains and the formation of cycloamyloses. Compared with raw starch, TaaGT-modified starch displayed a lower gelatinization enthalpy and a wider melting temperature range. The X-ray diffraction of TaaGT-modified starch was a weak V-type pattern with distinct sharp peaks at 13 and 20℃. Scanning electron micrographs of modified starch exhibited big holes on the surface and the loss of granular structure. The frequency sweep measurement revealed that the gel of TaaGT-modified starch was more rigid than raw starch gel. However, the structure of modified starch gel was destroyed by heating at 75℃ , and a firm gel was re-formed by subsequent storage at 5℃, indicating thermoreversible property.

목차

Abstract
 Introduction
 Materials and Methods
 Results and Discussion
 Acknowledgments
 References

키워드

4-a-glucanotransferase rheological property structural property sweet potato starch Thermus of aquaticus

저자

  • Seung Hee Lee [ Department of Agricultural Biotechnology, Center for Agricultural Biomaterials and Reserch Institute for Agriculture and Life Sciences, Seoul National University ]
  • Seung Jun Choi [ Department of Agricultural Biotechnology, Center for Agricultural Biomaterials and Reserch Institute for Agriculture and Life Sciences, Seoul National University ]
  • Sang Ick Shin [ Korea Yakult R&D Center, Korea Yakult ]
  • Kwan Hwa Park [ Department of Agricultural Biotechnology, Center for Agricultural Biomaterials and Reserch Institute for Agriculture and Life Sciences, Seoul National University ]
  • Tae Wha Moon [ Department of Agricultural Biotechnology, Center for Agricultural Biomaterials and Reserch Institute for Agriculture and Life Sciences, Seoul National University ] Corresponding author

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    한국식품과학회 [Korean Society of Food Science and Technology]
  • 설립연도
    1970
  • 분야
    농수해양>식품과학
  • 소개
    본회는 사회일반의이익에 공여하기 위하여 공공법인의 운영에 관한 법률의 규정에 따라 식품 과학 전반에 관한 이론 및 기술연구와 그 응용을 촉진 및 보급시키며 학술과 사업을 연계시키고, 나아가 국민의 식생활을 질적, 양적으로 향상시킴을 목적으로 한다.

간행물

  • 간행물명
    Food Science and Biotechnology
  • 간기
    격월간
  • pISSN
    1226-7708
  • 수록기간
    1992~2009
  • 십진분류
    KDC 574 DDC 664

이 권호 내 다른 논문 / Food Science and Biotechnology Volume 17 Number 4

    피인용수 : 0(자료제공 : 네이버학술정보)

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