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NUTR*3330 – Phytosterols Exam Questions With Verified Answers

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©BRIGHTSTRS EXAM SOLUTIONS 2024/2025 ALL RIGHTS RESERVED. 1 NUTR*3330 – Phytosterols Exam Questions With Verified Answers What are phytosterols? - AnswersPlant derived sterols that are similar in structure to cholesterol Most common phytosterols - Answers- Beta-sitosterol - Campesterol - Stigmasterol Subdivisions of phytosterols - AnswersPhytosterols and phytostanols Subdivision phytosterols - AnswersSterols with double bonds at position 5 and are more common. Subdivision phytostanols - AnswersSaturated derivatives of phytosterols with a reduction of the double bond, and are less common. Food source for cholesterol and phytosterols - AnswersChol: Animal foods Phyto: Plant foods Why is not a concern that both Chol. and Phyto. are atherogenic? - AnswersOnly 1-15% of phyto. intake is absorbed Main health focuses for phytosterols - AnswersCVD Cancer Immunity How do phytosterols help CVD? - AnswersReduction of blood lipids - Total and LDL cholesterol How do phytosterols/stanols lower cholesterol? - AnswersPhyto. is more hydrophobic than cholesterol and therefore has a higher affinity for micelles. Phyto. competes with cholesterol resulting in displacement of cholesterol from the micelles into the feces

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©BRIGHTSTRS EXAM SOLUTIONS 2024/2025

ALL RIGHTS RESERVED.


NUTR*3330 – Phytosterols Exam Questions
With Verified Answers


What are phytosterols? - Answers✔Plant derived sterols that are similar in structure to
cholesterol

Most common phytosterols - Answers✔- Beta-sitosterol
- Campesterol
- Stigmasterol

Subdivisions of phytosterols - Answers✔Phytosterols and phytostanols

Subdivision phytosterols - Answers✔Sterols with double bonds at position 5 and are more
common.

Subdivision phytostanols - Answers✔Saturated derivatives of phytosterols with a reduction of
the double bond, and are less common.

Food source for cholesterol and phytosterols - Answers✔Chol: Animal foods
Phyto: Plant foods

Why is not a concern that both Chol. and Phyto. are atherogenic? - Answers✔Only 1-15% of
phyto. intake is absorbed

Main health focuses for phytosterols - Answers✔CVD
Cancer
Immunity

How do phytosterols help CVD? - Answers✔Reduction of blood lipids
- Total and LDL cholesterol

How do phytosterols/stanols lower cholesterol? - Answers✔Phyto. is more hydrophobic than
cholesterol and therefore has a higher affinity for micelles. Phyto. competes with cholesterol
resulting in displacement of cholesterol from the micelles into the feces
1

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