Modeling and Characterization of Blended Guava Pomace and Pulse Powder Based Rice Extrudates

Author:

Tangirala Srikanth,Sarkar B. C.,Sharma Harish Kumar,Kumar Navneet

Abstract

The purpose of the present work was to study the effect of guava pomace and pulse powder incorporation in to rice based extrudates on physical characteristics. Guava pomace collected after juice extraction was dried and milled. It was then added with pulse powder-rice flour blend at different combinations based on Central Composite Rotatable Design (CCRD). The independent variables were moisture content (17 – 21%), temperature (115 – 135°C), screw speed (230 – 270rpm), and varying proportion of rice, pulse and guava pomace. Higher feed moisture content resulted in extrudates with a higher density, lower expansion, higher water absorption index, lower water soluble index, and higher hardness. Higher barrel temperature resulted in reduced density, increased expansion, and water solubility index. Addition of guava pomace resulted in increase in water absorption index, hardness and decreased bulk density, expansion and water solubility index. The study suggested the guava pomace may be utilized up to the level of 10% to in Ready to Eat Snacks.

Publisher

Walter de Gruyter GmbH

Subject

Engineering (miscellaneous),Food Science,Biotechnology

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