Frontiers in Sustainable Food Systems (Oct 2022)

Impact of different processing techniques on reduction in oil content in deep-fried donuts when using kombucha cellulose hydrolysates

  • Shan He,
  • Shan He,
  • Shan He,
  • Yang Zhang,
  • Caiqing Gu,
  • Yixiao Wu,
  • Muhammad Adil Farooq,
  • David James Young,
  • Jonathan Woon Chung Wong,
  • Kun Chang,
  • Bin Tian,
  • Ankita Kumari,
  • Abdul Rahaman,
  • Jingrong Gao

DOI
https://doi.org/10.3389/fsufs.2022.997097
Journal volume & issue
Vol. 6

Abstract

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To evaluate the efficiency of the oil-reducing properties of kombucha cellulose, enzymolysis and microwave-assisted enzymolysis methods were developed. The water-holding capacity of the kombucha cellulose hydrolysates formed by these two methods was higher than for the intact kombucha cellulose, while the oil-holding capacity was lower. The hydrolysates of kombucha cellulose and the intact kombucha cellulose were used to make deep-fried donuts. During this process, kombucha cellulose hydrolysates were added instead of 2% flour, and from the results, the oil content of the donut decreased significantly from ~28 to 15%, and the reduction was not related to the processing of the donut. The hardness and brittleness of all samples showed no significant change, and these samples had similar internal micro-structures, confirming texture profile analysis. In vitro digestion results suggested that there would be no adverse health effects from substituting kombucha cellulose hydrolysates in the deep-fried donut formula.

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