Sensory, Digestion and Texture Quality of Commercial Gluten-Free Bread: Impact of Broken Rice Flour Type

Ehsan Feizollahi, Leila Mirmoghtadaie, Mohammad Amin Mohammadifar*, Sahar Jazaeri, Haleh Hadaegh, Bahman Nazari, Sajjad Lalegani

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

This research investigated the effects of two varieties of broken rice (Khouzestan and Lenjan) from warm and dry regions, and two (Hashemi and Tarom) from mild and humid regions on different parameters including dough rheology, digestibility and quality (color, specific volume, textural properties and sensorial properties) of a commercial gluten-free bread. Furthermore, the rice varieties' hydration properties, gelatinization temperatures and starch-granule morphology were assessed. Significant differences were observed in the varieties' proximate composition and hydration properties from both climate zones. The granules' average size was 3.17-4.9 µm. The specific volume of the breads showed no correlation with either the damaged starch content or the amylose content, but had a significant negative correlation with hardness (r = -0.923, P<0.05). The crumb hardness of bread was positively correlated with water-binding capacity and was affected by elastic modulus of dough. Results of predicted glycemic index were in accordance with total carbohydrates. Khouzestan received the highest score in sensory evaluation test. Based on the outcomes for bread-quality attributes, Khouzestan from the warm and dry region, which is a cheaper rice variety in Iran, was the most appropriate variety for gluten-free bread production. Moreover, it was determined that the rice varieties currently used in commercial manufacture of gluten-free bread do not necessarily yield the highest-quality bread.
Original languageEnglish
JournalJournal of Texture Studies
Volume49
Issue number4
Pages (from-to)395-403
ISSN0022-4901
DOIs
Publication statusPublished - 2018

Keywords

  • Digestion
  • Gluten-free bread
  • Rice
  • Texture

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