Lignin

Definition

Lignin is a complex organic polymer found in the cell walls of plants, providing rigidity and resistance to decay. It is not digestible by humans but plays a role in dietary fiber.

5 Must Know Facts For Your Next Test

1. Lignin is an integral component of dietary fiber which helps in maintaining bowel health.
2. It does not raise blood glucose levels, making it beneficial for individuals with chronic endocrine illnesses like diabetes.
3. Lignin can aid in reducing cholesterol levels by binding to bile acids.
4. Dietary sources high in lignin include seeds, whole grains, and vegetables like carrots and broccoli.
5. Lignin can potentially reduce the risk of hormone-related cancers due to its ability to bind and excrete estrogen.

Review Questions

• What role does lignin play in human digestion?
• Why is lignin beneficial for individuals with chronic endocrine illnesses?
• Name three dietary sources high in lignin.

Related terms

Dietary Fiber:

A type of carbohydrate that the body cannot digest, important for digestive health.

Cellulose: Another component of plant cell walls that acts as insoluble fiber aiding digestion.

Phytochemicals:

Bioactive compounds in plants that have effects on human health, including potential protective roles against chronic diseases.