Volume 45, Issue 11 e15953
ORIGINAL ARTICLE

Investigation of process and product parameters on physical attributes, resistant starch, and in vitro starch digestibility of modified rice flour-based extruded snacks

Beenish Gulzar

Beenish Gulzar

Division of Food Science and Technology, Sher-e-Kashmir University of Agricultural Sciences and Technology (SKUAST) Kashmir, Srinagar, India

Contribution: ​Investigation, Writing - original draft

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Syed Zameer Hussain

Corresponding Author

Syed Zameer Hussain

Division of Food Science and Technology, Sher-e-Kashmir University of Agricultural Sciences and Technology (SKUAST) Kashmir, Srinagar, India

Correspondence

Syed Zameer Hussain, Division of Food Science and Technology, Sher-e-Kashmir University of Agricultural Sciences and Technology (SKUAST) Kashmir, Shalimar 190025, India.

Email: [email protected]

Contribution: Conceptualization, Supervision

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Bazila Naseer

Bazila Naseer

Division of Food Science and Technology, Sher-e-Kashmir University of Agricultural Sciences and Technology (SKUAST) Kashmir, Srinagar, India

Contribution: Data curation, Validation

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Asif Bashir Shikari

Asif Bashir Shikari

Division of Plant Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology (SKUAST) Kashmir, Srinagar, India

Contribution: Writing - review & editing

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Nageena Nazir

Nageena Nazir

Division of Agricultural Statistics, Sher-e-Kashmir University of Agricultural Sciences and Technology (SKUAST) Kashmir, Srinagar, India

Contribution: Formal analysis

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Gousia Gani

Gousia Gani

Division of Food Science and Technology, Sher-e-Kashmir University of Agricultural Sciences and Technology (SKUAST) Kashmir, Srinagar, India

Contribution: Visualization

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First published: 15 September 2021
Citations: 8

Abstract

Modified rice flour (MRF) with higher resistant starch content was explored to produce resistant starch, enriched extruded snacks. Effects of feed moisture (10%–35%), temperature (130–180°C), and screw speed (150–200 rpm) on specific mechanical energy input (SME), expansion ratio (ER), breaking strength (BS), L*, a*, and b* values, resistant starch (RS), predicted glycemic index (pGI), glycemic load (GL), and sensory evaluation of extrudates were investigated. Moreover, independent variables influenced both machine and product responses significantly (p < .05). Design expert predicted feed moisture of 26.90%, temperature of 130°C, and screw speed of 193 rpm as desirable conditions for the development of MRF extrudates. pGI decreased from 75.83 in control to 68.41 in the developed MRF extrudates.

Novelty statement

Resistant starch content increased from 4.12% in native rice flour (NRF) extrudates to 7.16% in MRF extrudates. Predicted glycemic response decreased from 75.83 in NRF extrudates to 68.41 in MRF extrudates. Moisture content of 26.90%, screw speed of 193 rpm, and temperature of 130°C were predicted as optimum extrusion cooking conditions. Using pregelatinized rice flour in the preparation of extrudates proved to be a novel way to decrease the glycemic index and glycemic load of rice-based snacks.

DATA AVAILABILITY STATEMENT

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