15.76 Because peanut oil floats on the top of peanut butter, the peanut oil in many brands of peanut butter is hydrogenated and the solid is mixed into the peanut butter to give a product that does not separate. If a triacylglycerol in peanut oil that contains one oleic acid and two linoleic acids is completely hydrogenated, draw the condensed structural formula for the product. (15.3, 15.4)

Biochemistry
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ISBN:9781319114671
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Chapter1: Biochemistry: An Evolving Science
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### Peanut Butter and Hydrogenation Process

#### Problem 15.76

Because peanut oil floats on the top of peanut butter, the peanut oil in many brands of peanut butter is hydrogenated and the solid is mixed into the peanut butter to give a product that does not separate. If a triacylglycerol in peanut oil that contains one oleic acid and two linoleic acids is completely hydrogenated, draw the condensed structural formula for the product. (15.3, 15.4)

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**Explanation**:

This problem explores the process of hydrogenation used in the preparation of peanut butter to prevent the separation of oil. The hydrogenation process converts unsaturated fats into saturated fats by adding hydrogen atoms to the carbon-carbon double bonds.

In this case, the triacylglycerol in the peanut oil consists of one oleic acid (which has one double bond) and two linoleic acids (each having two double bonds). Complete hydrogenation means that all double bonds are converted into single bonds.

**Tasks**:

1. Identify the structure of oleic acid (a monounsaturated fatty acid) and linoleic acid (a polyunsaturated fatty acid).
2. Understand the process of complete hydrogenation converting double bonds to single bonds.
3. Draw the condensed structural formula of the hydrogenated product, which would be a triacylglycerol with all single bonds in the fatty acid chains.

For a visual representation, you would typically see a glycerol backbone with three fatty acid chains, where each fatty acid chain has no double bonds after hydrogenation. This ensures the resulting structure is more stable and solid at room temperature, preventing oil separation.

This problem links to sections 15.3 and 15.4, which likely cover the structure of fatty acids and the hydrogenation process in detail.
Transcribed Image Text:### Peanut Butter and Hydrogenation Process #### Problem 15.76 Because peanut oil floats on the top of peanut butter, the peanut oil in many brands of peanut butter is hydrogenated and the solid is mixed into the peanut butter to give a product that does not separate. If a triacylglycerol in peanut oil that contains one oleic acid and two linoleic acids is completely hydrogenated, draw the condensed structural formula for the product. (15.3, 15.4) --- **Explanation**: This problem explores the process of hydrogenation used in the preparation of peanut butter to prevent the separation of oil. The hydrogenation process converts unsaturated fats into saturated fats by adding hydrogen atoms to the carbon-carbon double bonds. In this case, the triacylglycerol in the peanut oil consists of one oleic acid (which has one double bond) and two linoleic acids (each having two double bonds). Complete hydrogenation means that all double bonds are converted into single bonds. **Tasks**: 1. Identify the structure of oleic acid (a monounsaturated fatty acid) and linoleic acid (a polyunsaturated fatty acid). 2. Understand the process of complete hydrogenation converting double bonds to single bonds. 3. Draw the condensed structural formula of the hydrogenated product, which would be a triacylglycerol with all single bonds in the fatty acid chains. For a visual representation, you would typically see a glycerol backbone with three fatty acid chains, where each fatty acid chain has no double bonds after hydrogenation. This ensures the resulting structure is more stable and solid at room temperature, preventing oil separation. This problem links to sections 15.3 and 15.4, which likely cover the structure of fatty acids and the hydrogenation process in detail.
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