Question

Dietary guidelines suggest we limit our intake of butter due to the cholesterol content and substitute oils or margarine. The following table shows the major fatty acid distribution for a typical stick of margarine and also for butter. Values are percentages.

c. Which is likely to contain fewer trans-fatty acids

Accepted Answer

Understand the context: Trans-fatty acids are unsaturated fats that have been chemically altered through a process called hydrogenation. They are often found in processed foods and can increase the risk of heart disease. Margarine, especially older formulations, is known to sometimes contain trans fats due to partial hydrogenation of vegetable oils. Examine the table provided in the problem (not shown here). Look for any mention of trans-fatty acids or clues about the type of fatty acids present in margarine and butter. If the table lists 'trans fats' explicitly, compare the percentages directly. If the table does not explicitly list trans fats, consider the source of the fats. Butter is a natural product derived from animal fat and typically contains little to no trans fats unless processed. Margarine, on the other hand, is made from vegetable oils that may undergo hydrogenation, potentially introducing trans fats. Consider modern dietary trends: Many modern margarines are now formulated to be trans-fat-free due to health concerns. If the table specifies that the margarine is 'trans-fat-free' or uses terms like 'non-hydrogenated,' it is likely to contain fewer trans-fatty acids than butter. Conclude based on the data: If the table or problem provides specific information about the trans-fat content, use that to determine which product contains fewer trans-fatty acids. If no explicit data is given, rely on the general knowledge that modern margarines are often designed to minimize or eliminate trans fats, making them likely to contain fewer trans-fatty acids than butter.

비슷한 문제에 대한 검증된 영상 답변:

주요 개념

Trans-Fatty Acids

Fatty Acid Composition

Dietary Guidelines