Beta-carotene in tube feeding

Area of Science:

• Geriatric Nutrition
• Nutritional Biochemistry
• Dietary Supplementation

Background:

• Elderly individuals often have suboptimal nutrient levels.
• Enteral feeding formulas require careful formulation to meet specific geriatric needs.
• Beta-carotene is a vital antioxidant with potential benefits for aging populations.

Purpose of the Study:

• To evaluate the impact of beta-carotene supplementation in a soya-based enteral formula for geriatric patients.
• To assess the bioavailability and plasma concentration changes of beta-carotene.
• To confirm the adequacy of other essential vitamins (A and E) in the formula.

Main Methods:

• Geriatric patients received a soya-based enteral formula supplemented with 1.5-2 mg of beta-carotene daily.
• Plasma beta-carotene concentrations were measured before and after supplementation.
• Plasma levels of vitamins A and E were monitored throughout the study.

Main Results:

• Daily beta-carotene intake of 1.5-2 mg increased plasma concentrations from 20 mcg/L to approximately 500 mcg/L, reaching optimal levels.
• The supplemented intake is well below the proposed safe intake range of 6-20 mg per day.
• Plasma levels of vitamins A and E remained within normal ranges with supplemental intakes of 2500 IU vitamin A and 12.5 mg vitamin E, respectively.

Conclusions:

• The soya-based enteral formula effectively increases plasma beta-carotene levels in geriatric patients to optimal concentrations.
• The formula appears to provide comprehensive nutritional support, covering global needs for elderly individuals.
• Further research into optimizing beta-carotene incorporation within the lipid moiety could enhance bioavailability.