4.7 Article

Physico-chemical properties of reduced-fat biscuits prepared using O/W cellulose-based pickering emulsion

Journal

LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 148, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.lwt.2021.111745

Keywords

Appearance; Biscuit; Dietary fiber; Fat substitute; Pickering emulsion

Funding

  1. National Natural Science Foundation of China [32072177]
  2. projects of science and technology of Zhejiang Province [2019c01105]

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This study evaluated the potential of oil-in-water Pickering emulsions stabilized with dietary fibers as fat substitutes in low-calorie baked foods. The findings showed that the biscuits had better appearance and texture with a 35% fat replacement rate. This research expands the potential application of Pickering emulsions stabilized with dietary fibers in the development of low-fat baked foods.
This study was aimed at evaluating the potential of oil-in-water (O/W) Pickering emulsions stabilized with dietary fibers as fat substitutes to prepare low-calorie baked foods. The chewy biscuits were used as a research model to evaluate the feasibility of Pickering emulsions with different oil phase volume fractions (10%-50%) as fat substitutes. The dough mixing characteristics and biscuit quality with different fat replacement rates (0%- 90%) were assessed. The bacterial cellulose (BC) and bamboo shoot water-insoluble dietary fiber (BSDF) were used to provide good stabilization of O/W emulsions against coalescence over a period of one month. In the reduced-fat doughs, dietary fiber increased the viscoelasticity of the dough by altering the gluten network structure and forming a discontinuous, irregular matrix. The overall appearance and texture of the biscuits were better when the fat replacement rate was 35%. Moreover, the reduced fat energy was 12.5 kJ/g, and the amount of dietary fiber increased to 1.05 mg/g. The fingdings might expand the potential application of Pickering emulsion stabilized with dietary fibers as fat substitutes in the development of low-fat baked foods.

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