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Physicochemical Properties of Enzymatically Modified Maize Starch Using 4-a-Glucanotransferase

첫 페이지 보기
  • 발행기관
    한국식품과학회 바로가기
  • 간행물
    Food Science and Biotechnology SCIE KCI 등재 SCOPUS 바로가기
  • 통권
    Volume 16 Number 6 (2007.12)바로가기
  • 페이지
    pp.902-909
  • 저자
    Park, Jin-Hee, Park, Kwan-Hwa, Jane, Jay-Iin
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A79265

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원문정보

초록

영어
Granular maize starch was treated with Thermus scotoductus 4--glucanotransferase (-GTase), and its physicochemical properties were determined. The gelatinization and pasting temperatures of -GTase-modified starch were decreased by higher enzyme concentrations. -GTase treatment lowered the peak, setback, and [mal viscosity of the starch. At a higher level of enzyme treatment, the melting peak of the amylose-lipid complex was undetectable on the DSC thermogram. Also, -GTase-modified starch showed a slower retrogradation rate. The enzyme treatment changed the dynamic rheological properties of the starch, leading to decreases in its elastic (G') and viscous (G") moduli. -GTase-modified starch showed more liquid-like characteristics, whereas normal maize starch was more elastic and solid-like. Gel permeation chromatography of modified starch showed that amylose was degraded, and a low molecular-weight fraction with Mw of 1.1 x 105 was produced. Branch chain-length (BCL) distribution of modified starch showed increases in BCL (DP>20), which could result from the glucans degraded from amylose molecules transferred to the branch chains of amylopectin by inter-/intra-molecular transglycosylation of -GTase. These new physicochemical functionalities of the modified starch produced by a-GTase treatment are applicable to starch-based products in various industries.

목차

Abstract
 Introduction
 Materials and Methods
 Results and Discussion
 Acknowledgments
 References

키워드

modified starch 4-a-glucanotransferase physicochemical property dynamic rheology retrogradation transglycosylation

저자

  • Park, Jin-Hee [ CJ Foods R&D CJ Cheil Jedang Corporation ] Corresponding author
  • Park, Kwan-Hwa [ Department of Food and Animal Biotechnology, Seoul National University ]
  • Jane, Jay-Iin [ Department of Food Science and Human Nutrition, Iowa State University ]

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 16 Number 6

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