Influence of storage temperature and autoclaving cycles on slowly digestible and resistant starch (RS) formation from partially debranched rice starch

Kwang Yeon Lee, Suyong Lee, Hyeon Gyu Lee

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In this study, optimum conditions to produce slowly digestible starch (SDS) and RS from rice starch were investigated as a function of pullulanase concentrations, storage temperature, and autoclaving-cooling cycles. Then, the physicochemical properties of the rice starches obtained were compared with native rice starch. Response surface methodology (RSM) was used to evaluate the effects of independent variables, namely the enzyme (pullulanase) concentration (X1), storage temperature (X2), and autoclaving-cooling cycle (X3) on the production of SDS and RS fraction. The optimum conditions for SDS and RS occurred in the treatment with application of pullulanase at 482 and 610 μL, and storage temperature at 36 and 63°C with autoclaving cycles of three times, respectively. SDS and RS obtained through optimum conditions showed higher amylose content and water solubility index as compared to native starch. While the SF and water absorption index were lower than native starch. The extent of hydrolysis α-amylose decreased in the order cooked starch>SDS>RS>native starch. SDS and RS had lower RVA parameters (except pasting temperatures) than native starch.

Original languageEnglish
Pages (from-to)694-701
Number of pages8
JournalStarch/Staerke
Volume65
Issue number7-8
DOIs
StatePublished - 2013 Jul 1

Fingerprint

rice starch
autoclaving
resistant starch
Starch
storage temperature
starch
Temperature
pullulanase
amylose
Oryza
cooling
Amylose
water solubility
pasting properties
response surface methodology
water uptake
physicochemical properties
hydrolysis
Cooling

Keywords

  • Physicochemical properties
  • RS
  • Response surface methodology
  • Rice starch
  • Slowly digestible starch

Cite this

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Influence of storage temperature and autoclaving cycles on slowly digestible and resistant starch (RS) formation from partially debranched rice starch. / Lee, Kwang Yeon; Lee, Suyong; Lee, Hyeon Gyu.

In: Starch/Staerke, Vol. 65, No. 7-8, 01.07.2013, p. 694-701.

Research output: Contribution to journalArticle

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