Graduate Thesis Or Dissertation

 

Effect of cooking on the fiber content of cauliflower and carrots Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/fq977x865

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  • This study investigated the effect of cooking on the neutral detergent fiber (NDF) content of cauliflower and carrots. For each replication the vegetable was divided in half to serve as its own control. One half was used raw and the other half was cooked in 60 ml of distilled water for 7 to 8 minutes. Internal temperature of the cooked samples verified a uniform cooking process. Moisture and NDF were determined in both raw and cooked samples. A texture reading, determined by shear force, was also done on the cooked samples. The resulting NDF residues from the raw and cooked samples were used to compare water-absorbing capacity and ash content. In terms of 100 g dry weight, NDF decreased in cooked cauliflower from 19.13 to 17.22 g (p< 0.05) and increased in cooked carrots from 9.47 to 10.54 g (p<0.05). The exact opposite was observed for water-absorbing capacity. It increased in cooked cauliflower and decreased in cooked carrots. Ash content showed large variations but a general increase in both vegetables after cooking. No positive relationship was found between texture and NDF in the cooked vegetables. These observations confirm the complex nature of dietary fiber. Results suggest that although cooking affected the NDF in selected vegetables, the quantity of the change was not large enough to alter dietary fiber's physiological effect in the body.
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