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Antioxidant activity comparison of walnuts and fatty fish.
J Med Assoc Thai. 2012 Jun; 95 Suppl 6:S179-88.JM

Abstract

BACKGROUND

Walnuts and fatty fish contain high amounts of polyunsaturated fatty acids, which have been shown to decrease the incidence of cardiovascular disease. Walnuts and fatty fish also contain other nutrients, such as antioxidants, that contribute to the reduction of cardiovascular disease.

OBJECTIVE

The purpose of the present study was to compare the effects of dietary walnuts and fatty fish on the plasma and urine oxygen radical absorbance capacity (ORAC) values.

MATERIAL AND METHOD

Twenty-five subjects participated in this randomized 3 x 3 crossover study, which was performed under controlled metabolic feeding conditions. Subjects consumed 3 isoenergetic diets and each diet was consumed for 4 weeks: a control diet (no nuts or fish), a walnut diet (1.5 oz/day of walnuts, 6 times/week) and a fish diet (8 oz/week of salmon). Blood specimens were collected at baseline and at the end of each diet period.

RESULTS

The results showed that the plasma hydrophilic ORAC was significantly higher in the walnut diet compared with the control diet and the fish diet (p < 0.0001). In addition, the urine ORAC was significantly higher in the walnut diet and the fish diet compared with the control diet (p < 0.0001). Moreover the hydrophilic/lipophilic ORAC for the food itself was significantly higher in the walnut diet compared with the control diet and the fish diet (p < 0.0001).

CONCLUSION

The present results suggest that walnuts have a large antioxidant capacity; therefore, including walnuts in the daily diet may be beneficial to maintain an antioxidant status in the body.

Authors+Show Affiliations

Department of Nutrition, Faculty of Public Health, Mahidol University, Rajvithi Road, Ratchathewi, Bangkok, Thailand. phchatrapa@mahidol.ac.thNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

23130505

Citation

Hudthagosol, Chatrapa, et al. "Antioxidant Activity Comparison of Walnuts and Fatty Fish." Journal of the Medical Association of Thailand = Chotmaihet Thangphaet, vol. 95 Suppl 6, 2012, pp. S179-88.
Hudthagosol C, Haddad E, Jongsuwat R. Antioxidant activity comparison of walnuts and fatty fish. J Med Assoc Thai. 2012;95 Suppl 6:S179-88.
Hudthagosol, C., Haddad, E., & Jongsuwat, R. (2012). Antioxidant activity comparison of walnuts and fatty fish. Journal of the Medical Association of Thailand = Chotmaihet Thangphaet, 95 Suppl 6, S179-88.
Hudthagosol C, Haddad E, Jongsuwat R. Antioxidant Activity Comparison of Walnuts and Fatty Fish. J Med Assoc Thai. 2012;95 Suppl 6:S179-88. PubMed PMID: 23130505.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antioxidant activity comparison of walnuts and fatty fish. AU - Hudthagosol,Chatrapa, AU - Haddad,Ella, AU - Jongsuwat,Rewadee, PY - 2012/11/8/entrez PY - 2012/11/8/pubmed PY - 2012/12/10/medline SP - S179 EP - 88 JF - Journal of the Medical Association of Thailand = Chotmaihet thangphaet JO - J Med Assoc Thai VL - 95 Suppl 6 N2 - BACKGROUND: Walnuts and fatty fish contain high amounts of polyunsaturated fatty acids, which have been shown to decrease the incidence of cardiovascular disease. Walnuts and fatty fish also contain other nutrients, such as antioxidants, that contribute to the reduction of cardiovascular disease. OBJECTIVE: The purpose of the present study was to compare the effects of dietary walnuts and fatty fish on the plasma and urine oxygen radical absorbance capacity (ORAC) values. MATERIAL AND METHOD: Twenty-five subjects participated in this randomized 3 x 3 crossover study, which was performed under controlled metabolic feeding conditions. Subjects consumed 3 isoenergetic diets and each diet was consumed for 4 weeks: a control diet (no nuts or fish), a walnut diet (1.5 oz/day of walnuts, 6 times/week) and a fish diet (8 oz/week of salmon). Blood specimens were collected at baseline and at the end of each diet period. RESULTS: The results showed that the plasma hydrophilic ORAC was significantly higher in the walnut diet compared with the control diet and the fish diet (p < 0.0001). In addition, the urine ORAC was significantly higher in the walnut diet and the fish diet compared with the control diet (p < 0.0001). Moreover the hydrophilic/lipophilic ORAC for the food itself was significantly higher in the walnut diet compared with the control diet and the fish diet (p < 0.0001). CONCLUSION: The present results suggest that walnuts have a large antioxidant capacity; therefore, including walnuts in the daily diet may be beneficial to maintain an antioxidant status in the body. SN - 0125-2208 UR - https://www.unboundmedicine.com/medline/citation/23130505/Antioxidant_activity_comparison_of_walnuts_and_fatty_fish_ L2 - https://medlineplus.gov/antioxidants.html DB - PRIME DP - Unbound Medicine ER -